hotspot/src/share/vm/code/nmethod.cpp
author twisti
Tue, 16 Aug 2011 04:14:05 -0700
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/*
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 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "code/codeCache.hpp"
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#include "code/compiledIC.hpp"
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#include "code/dependencies.hpp"
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#include "code/nmethod.hpp"
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#include "code/scopeDesc.hpp"
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#include "compiler/abstractCompiler.hpp"
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#include "compiler/compileBroker.hpp"
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#include "compiler/compileLog.hpp"
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#include "compiler/compilerOracle.hpp"
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#include "compiler/disassembler.hpp"
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#include "interpreter/bytecode.hpp"
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#include "oops/methodDataOop.hpp"
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#include "prims/jvmtiRedefineClassesTrace.hpp"
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#include "prims/jvmtiImpl.hpp"
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#include "runtime/sharedRuntime.hpp"
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#include "runtime/sweeper.hpp"
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#include "utilities/dtrace.hpp"
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#include "utilities/events.hpp"
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#include "utilities/xmlstream.hpp"
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#ifdef SHARK
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#include "shark/sharkCompiler.hpp"
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#endif
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#ifdef DTRACE_ENABLED
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// Only bother with this argument setup if dtrace is available
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HS_DTRACE_PROBE_DECL8(hotspot, compiled__method__load,
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  const char*, int, const char*, int, const char*, int, void*, size_t);
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HS_DTRACE_PROBE_DECL6(hotspot, compiled__method__unload,
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  char*, int, char*, int, char*, int);
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#define DTRACE_METHOD_UNLOAD_PROBE(method)                                \
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  {                                                                       \
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    methodOop m = (method);                                               \
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    if (m != NULL) {                                                      \
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      Symbol* klass_name = m->klass_name();                               \
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      Symbol* name = m->name();                                           \
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      Symbol* signature = m->signature();                                 \
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      HS_DTRACE_PROBE6(hotspot, compiled__method__unload,                 \
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        klass_name->bytes(), klass_name->utf8_length(),                   \
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        name->bytes(), name->utf8_length(),                               \
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        signature->bytes(), signature->utf8_length());                    \
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    }                                                                     \
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  }
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#else //  ndef DTRACE_ENABLED
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#define DTRACE_METHOD_UNLOAD_PROBE(method)
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#endif
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bool nmethod::is_compiled_by_c1() const {
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  if (compiler() == NULL || method() == NULL)  return false;  // can happen during debug printing
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  if (is_native_method()) return false;
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  return compiler()->is_c1();
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}
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bool nmethod::is_compiled_by_c2() const {
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  if (compiler() == NULL || method() == NULL)  return false;  // can happen during debug printing
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  if (is_native_method()) return false;
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  return compiler()->is_c2();
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}
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bool nmethod::is_compiled_by_shark() const {
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  if (is_native_method()) return false;
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  assert(compiler() != NULL, "must be");
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  return compiler()->is_shark();
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}
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//---------------------------------------------------------------------------------
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// NMethod statistics
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// They are printed under various flags, including:
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//   PrintC1Statistics, PrintOptoStatistics, LogVMOutput, and LogCompilation.
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// (In the latter two cases, they like other stats are printed to the log only.)
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#ifndef PRODUCT
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// These variables are put into one block to reduce relocations
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// and make it simpler to print from the debugger.
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static
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struct nmethod_stats_struct {
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  int nmethod_count;
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  int total_size;
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  int relocation_size;
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  int consts_size;
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  int insts_size;
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  int stub_size;
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  int scopes_data_size;
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  int scopes_pcs_size;
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  int dependencies_size;
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  int handler_table_size;
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  int nul_chk_table_size;
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  int oops_size;
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  void note_nmethod(nmethod* nm) {
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    nmethod_count += 1;
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    total_size          += nm->size();
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    relocation_size     += nm->relocation_size();
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    consts_size         += nm->consts_size();
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    insts_size          += nm->insts_size();
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    stub_size           += nm->stub_size();
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    oops_size           += nm->oops_size();
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    scopes_data_size    += nm->scopes_data_size();
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    scopes_pcs_size     += nm->scopes_pcs_size();
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    dependencies_size   += nm->dependencies_size();
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    handler_table_size  += nm->handler_table_size();
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    nul_chk_table_size  += nm->nul_chk_table_size();
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  }
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  void print_nmethod_stats() {
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    if (nmethod_count == 0)  return;
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    tty->print_cr("Statistics for %d bytecoded nmethods:", nmethod_count);
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    if (total_size != 0)          tty->print_cr(" total in heap  = %d", total_size);
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    if (relocation_size != 0)     tty->print_cr(" relocation     = %d", relocation_size);
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    if (consts_size != 0)         tty->print_cr(" constants      = %d", consts_size);
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    if (insts_size != 0)          tty->print_cr(" main code      = %d", insts_size);
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    if (stub_size != 0)           tty->print_cr(" stub code      = %d", stub_size);
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    if (oops_size != 0)           tty->print_cr(" oops           = %d", oops_size);
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    if (scopes_data_size != 0)    tty->print_cr(" scopes data    = %d", scopes_data_size);
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    if (scopes_pcs_size != 0)     tty->print_cr(" scopes pcs     = %d", scopes_pcs_size);
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    if (dependencies_size != 0)   tty->print_cr(" dependencies   = %d", dependencies_size);
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    if (handler_table_size != 0)  tty->print_cr(" handler table  = %d", handler_table_size);
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    if (nul_chk_table_size != 0)  tty->print_cr(" nul chk table  = %d", nul_chk_table_size);
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  }
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  int native_nmethod_count;
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  int native_total_size;
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  int native_relocation_size;
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  int native_insts_size;
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  int native_oops_size;
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  void note_native_nmethod(nmethod* nm) {
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    native_nmethod_count += 1;
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    native_total_size       += nm->size();
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    native_relocation_size  += nm->relocation_size();
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    native_insts_size       += nm->insts_size();
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    native_oops_size        += nm->oops_size();
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  }
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  void print_native_nmethod_stats() {
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    if (native_nmethod_count == 0)  return;
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    tty->print_cr("Statistics for %d native nmethods:", native_nmethod_count);
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    if (native_total_size != 0)       tty->print_cr(" N. total size  = %d", native_total_size);
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    if (native_relocation_size != 0)  tty->print_cr(" N. relocation  = %d", native_relocation_size);
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    if (native_insts_size != 0)       tty->print_cr(" N. main code   = %d", native_insts_size);
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    if (native_oops_size != 0)        tty->print_cr(" N. oops        = %d", native_oops_size);
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  }
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  int pc_desc_resets;   // number of resets (= number of caches)
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  int pc_desc_queries;  // queries to nmethod::find_pc_desc
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  int pc_desc_approx;   // number of those which have approximate true
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  int pc_desc_repeats;  // number of _pc_descs[0] hits
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  int pc_desc_hits;     // number of LRU cache hits
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  int pc_desc_tests;    // total number of PcDesc examinations
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  int pc_desc_searches; // total number of quasi-binary search steps
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  int pc_desc_adds;     // number of LUR cache insertions
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  void print_pc_stats() {
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    tty->print_cr("PcDesc Statistics:  %d queries, %.2f comparisons per query",
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                  pc_desc_queries,
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                  (double)(pc_desc_tests + pc_desc_searches)
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                  / pc_desc_queries);
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    tty->print_cr("  caches=%d queries=%d/%d, hits=%d+%d, tests=%d+%d, adds=%d",
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                  pc_desc_resets,
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                  pc_desc_queries, pc_desc_approx,
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                  pc_desc_repeats, pc_desc_hits,
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                  pc_desc_tests, pc_desc_searches, pc_desc_adds);
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  }
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} nmethod_stats;
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#endif //PRODUCT
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//---------------------------------------------------------------------------------
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ExceptionCache::ExceptionCache(Handle exception, address pc, address handler) {
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  assert(pc != NULL, "Must be non null");
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  assert(exception.not_null(), "Must be non null");
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  assert(handler != NULL, "Must be non null");
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  _count = 0;
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  _exception_type = exception->klass();
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  _next = NULL;
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  add_address_and_handler(pc,handler);
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}
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address ExceptionCache::match(Handle exception, address pc) {
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  assert(pc != NULL,"Must be non null");
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  assert(exception.not_null(),"Must be non null");
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  if (exception->klass() == exception_type()) {
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    return (test_address(pc));
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  }
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  return NULL;
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}
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bool ExceptionCache::match_exception_with_space(Handle exception) {
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  assert(exception.not_null(),"Must be non null");
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  if (exception->klass() == exception_type() && count() < cache_size) {
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    return true;
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  }
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  return false;
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}
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address ExceptionCache::test_address(address addr) {
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  for (int i=0; i<count(); i++) {
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    if (pc_at(i) == addr) {
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      return handler_at(i);
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    }
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  }
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  return NULL;
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}
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bool ExceptionCache::add_address_and_handler(address addr, address handler) {
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  if (test_address(addr) == handler) return true;
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  if (count() < cache_size) {
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    set_pc_at(count(),addr);
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    set_handler_at(count(), handler);
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    increment_count();
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    return true;
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  }
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  return false;
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}
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// private method for handling exception cache
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// These methods are private, and used to manipulate the exception cache
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// directly.
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ExceptionCache* nmethod::exception_cache_entry_for_exception(Handle exception) {
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  ExceptionCache* ec = exception_cache();
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  while (ec != NULL) {
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    if (ec->match_exception_with_space(exception)) {
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      return ec;
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    }
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    ec = ec->next();
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  }
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  return NULL;
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}
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//-----------------------------------------------------------------------------
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// Helper used by both find_pc_desc methods.
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static inline bool match_desc(PcDesc* pc, int pc_offset, bool approximate) {
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  NOT_PRODUCT(++nmethod_stats.pc_desc_tests);
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  if (!approximate)
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    return pc->pc_offset() == pc_offset;
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  else
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    return (pc-1)->pc_offset() < pc_offset && pc_offset <= pc->pc_offset();
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}
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void PcDescCache::reset_to(PcDesc* initial_pc_desc) {
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  if (initial_pc_desc == NULL) {
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    _pc_descs[0] = NULL; // native method; no PcDescs at all
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    return;
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  }
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  NOT_PRODUCT(++nmethod_stats.pc_desc_resets);
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  // reset the cache by filling it with benign (non-null) values
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  assert(initial_pc_desc->pc_offset() < 0, "must be sentinel");
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  for (int i = 0; i < cache_size; i++)
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    _pc_descs[i] = initial_pc_desc;
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}
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PcDesc* PcDescCache::find_pc_desc(int pc_offset, bool approximate) {
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  NOT_PRODUCT(++nmethod_stats.pc_desc_queries);
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  NOT_PRODUCT(if (approximate) ++nmethod_stats.pc_desc_approx);
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  // Note: one might think that caching the most recently
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  // read value separately would be a win, but one would be
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  // wrong.  When many threads are updating it, the cache
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  // line it's in would bounce between caches, negating
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  // any benefit.
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  // In order to prevent race conditions do not load cache elements
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  // repeatedly, but use a local copy:
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  PcDesc* res;
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  // Step one:  Check the most recently added value.
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  res = _pc_descs[0];
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  if (res == NULL) return NULL;  // native method; no PcDescs at all
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  if (match_desc(res, pc_offset, approximate)) {
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    NOT_PRODUCT(++nmethod_stats.pc_desc_repeats);
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    return res;
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  }
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  // Step two:  Check the rest of the LRU cache.
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  for (int i = 1; i < cache_size; ++i) {
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    res = _pc_descs[i];
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    if (res->pc_offset() < 0) break;  // optimization: skip empty cache
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    if (match_desc(res, pc_offset, approximate)) {
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      NOT_PRODUCT(++nmethod_stats.pc_desc_hits);
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      return res;
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    }
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  }
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  // Report failure.
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  return NULL;
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}
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void PcDescCache::add_pc_desc(PcDesc* pc_desc) {
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  NOT_PRODUCT(++nmethod_stats.pc_desc_adds);
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  // Update the LRU cache by shifting pc_desc forward.
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  for (int i = 0; i < cache_size; i++)  {
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    PcDesc* next = _pc_descs[i];
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    _pc_descs[i] = pc_desc;
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    pc_desc = next;
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  }
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}
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// adjust pcs_size so that it is a multiple of both oopSize and
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// sizeof(PcDesc) (assumes that if sizeof(PcDesc) is not a multiple
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// of oopSize, then 2*sizeof(PcDesc) is)
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static int adjust_pcs_size(int pcs_size) {
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  int nsize = round_to(pcs_size,   oopSize);
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  if ((nsize % sizeof(PcDesc)) != 0) {
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    nsize = pcs_size + sizeof(PcDesc);
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  }
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  assert((nsize % oopSize) == 0, "correct alignment");
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  return nsize;
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}
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//-----------------------------------------------------------------------------
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void nmethod::add_exception_cache_entry(ExceptionCache* new_entry) {
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  assert(ExceptionCache_lock->owned_by_self(),"Must hold the ExceptionCache_lock");
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  assert(new_entry != NULL,"Must be non null");
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  assert(new_entry->next() == NULL, "Must be null");
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  if (exception_cache() != NULL) {
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    new_entry->set_next(exception_cache());
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  }
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  set_exception_cache(new_entry);
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}
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parents:
diff changeset
   364
489c9b5090e2 Initial load
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parents:
diff changeset
   365
void nmethod::remove_from_exception_cache(ExceptionCache* ec) {
489c9b5090e2 Initial load
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parents:
diff changeset
   366
  ExceptionCache* prev = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   367
  ExceptionCache* curr = exception_cache();
489c9b5090e2 Initial load
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parents:
diff changeset
   368
  assert(curr != NULL, "nothing to remove");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   369
  // find the previous and next entry of ec
489c9b5090e2 Initial load
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parents:
diff changeset
   370
  while (curr != ec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   371
    prev = curr;
489c9b5090e2 Initial load
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parents:
diff changeset
   372
    curr = curr->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   373
    assert(curr != NULL, "ExceptionCache not found");
489c9b5090e2 Initial load
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parents:
diff changeset
   374
  }
489c9b5090e2 Initial load
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parents:
diff changeset
   375
  // now: curr == ec
489c9b5090e2 Initial load
duke
parents:
diff changeset
   376
  ExceptionCache* next = curr->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   377
  if (prev == NULL) {
489c9b5090e2 Initial load
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parents:
diff changeset
   378
    set_exception_cache(next);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   379
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   380
    prev->set_next(next);
489c9b5090e2 Initial load
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parents:
diff changeset
   381
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   382
  delete curr;
489c9b5090e2 Initial load
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parents:
diff changeset
   383
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   384
489c9b5090e2 Initial load
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parents:
diff changeset
   385
489c9b5090e2 Initial load
duke
parents:
diff changeset
   386
// public method for accessing the exception cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
   387
// These are the public access methods.
489c9b5090e2 Initial load
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parents:
diff changeset
   388
address nmethod::handler_for_exception_and_pc(Handle exception, address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
  // We never grab a lock to read the exception cache, so we may
489c9b5090e2 Initial load
duke
parents:
diff changeset
   390
  // have false negatives. This is okay, as it can only happen during
489c9b5090e2 Initial load
duke
parents:
diff changeset
   391
  // the first few exception lookups for a given nmethod.
489c9b5090e2 Initial load
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parents:
diff changeset
   392
  ExceptionCache* ec = exception_cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
  while (ec != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
    address ret_val;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
    if ((ret_val = ec->match(exception,pc)) != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
      return ret_val;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
    }
489c9b5090e2 Initial load
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parents:
diff changeset
   398
    ec = ec->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  // There are potential race conditions during exception cache updates, so we
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  // must own the ExceptionCache_lock before doing ANY modifications. Because
2131
98f9cef66a34 6810672: Comment typos
twisti
parents: 1406
diff changeset
   407
  // we don't lock during reads, it is possible to have several threads attempt
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
  // to update the cache with the same data. We need to check for already inserted
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
  // copies of the current data before adding it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  MutexLocker ml(ExceptionCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
  ExceptionCache* target_entry = exception_cache_entry_for_exception(exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
  if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
    target_entry = new ExceptionCache(exception,pc,handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
    add_exception_cache_entry(target_entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
//-------------end of code for ExceptionCache--------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
int nmethod::total_size() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
  return
6432
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   426
    consts_size()        +
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   427
    insts_size()         +
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
    stub_size()          +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
    scopes_data_size()   +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
    scopes_pcs_size()    +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
    handler_table_size() +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
    nul_chk_table_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
const char* nmethod::compile_kind() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  if (is_osr_method())     return "osr";
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
   437
  if (method() != NULL && is_native_method())  return "c2n";
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   441
// Fill in default values for various flag fields
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   442
void nmethod::init_defaults() {
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   443
  _state                      = alive;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   444
  _marked_for_reclamation     = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   445
  _has_flushed_dependencies   = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   446
  _speculatively_disconnected = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   447
  _has_unsafe_access          = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   448
  _has_method_handle_invokes  = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   449
  _marked_for_deoptimization  = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   450
  _lock_count                 = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   451
  _stack_traversal_mark       = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   452
  _unload_reported            = false;           // jvmti state
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   453
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   454
  NOT_PRODUCT(_has_debug_info = false);
6268
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
   455
#ifdef ASSERT
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
   456
  _oops_are_stale             = false;
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
   457
#endif
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
   458
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   459
  _oops_do_mark_link       = NULL;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   460
  _jmethod_id              = NULL;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   461
  _osr_link                = NULL;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   462
  _scavenge_root_link      = NULL;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   463
  _scavenge_root_state     = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   464
  _saved_nmethod_link      = NULL;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   465
  _compiler                = NULL;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   466
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   467
#ifdef HAVE_DTRACE_H
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   468
  _trap_offset             = 0;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   469
#endif // def HAVE_DTRACE_H
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   470
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
nmethod* nmethod::new_native_nmethod(methodHandle method,
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
   474
  int compile_id,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
  CodeBuffer *code_buffer,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
  int vep_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
  int frame_complete,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
  int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
  ByteSize basic_lock_owner_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
  ByteSize basic_lock_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
  OopMapSet* oop_maps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
  // create nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
  nmethod* nm = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
    MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
    int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
    CodeOffsets offsets;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
    offsets.set_value(CodeOffsets::Verified_Entry, vep_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
    offsets.set_value(CodeOffsets::Frame_Complete, frame_complete);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
    nm = new (native_nmethod_size)
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
   491
      nmethod(method(), native_nmethod_size, compile_id, &offsets,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
              code_buffer, frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
              basic_lock_owner_sp_offset, basic_lock_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
              oop_maps);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
    NOT_PRODUCT(if (nm != NULL)  nmethod_stats.note_native_nmethod(nm));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
    if (PrintAssembly && nm != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
      Disassembler::decode(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  // verify nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
  debug_only(if (nm) nm->verify();) // might block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  if (nm != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
    nm->log_new_nmethod();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
  return nm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   509
#ifdef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   510
nmethod* nmethod::new_dtrace_nmethod(methodHandle method,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   511
                                     CodeBuffer *code_buffer,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   512
                                     int vep_offset,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   513
                                     int trap_offset,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   514
                                     int frame_complete,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   515
                                     int frame_size) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   516
  // create nmethod
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   517
  nmethod* nm = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   518
  {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   519
    MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   520
    int nmethod_size = allocation_size(code_buffer, sizeof(nmethod));
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   521
    CodeOffsets offsets;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   522
    offsets.set_value(CodeOffsets::Verified_Entry, vep_offset);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   523
    offsets.set_value(CodeOffsets::Dtrace_trap, trap_offset);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   524
    offsets.set_value(CodeOffsets::Frame_Complete, frame_complete);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   525
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   526
    nm = new (nmethod_size) nmethod(method(), nmethod_size, &offsets, code_buffer, frame_size);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   527
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   528
    NOT_PRODUCT(if (nm != NULL)  nmethod_stats.note_nmethod(nm));
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   529
    if (PrintAssembly && nm != NULL)
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   530
      Disassembler::decode(nm);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   531
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   532
  // verify nmethod
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   533
  debug_only(if (nm) nm->verify();) // might block
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   534
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   535
  if (nm != NULL) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   536
    nm->log_new_nmethod();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   537
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   538
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   539
  return nm;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   540
}
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   541
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   542
#endif // def HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   543
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
nmethod* nmethod::new_nmethod(methodHandle method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
  int compile_id,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  int entry_bci,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
  CodeOffsets* offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  int orig_pc_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
  DebugInformationRecorder* debug_info,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  Dependencies* dependencies,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  CodeBuffer* code_buffer, int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  OopMapSet* oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  ExceptionHandlerTable* handler_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
  ImplicitExceptionTable* nul_chk_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
  AbstractCompiler* compiler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
  int comp_level
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  // create nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  nmethod* nm = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
    int nmethod_size =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
      allocation_size(code_buffer, sizeof(nmethod))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
      + adjust_pcs_size(debug_info->pcs_size())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
      + round_to(dependencies->size_in_bytes() , oopSize)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
      + round_to(handler_table->size_in_bytes(), oopSize)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
      + round_to(nul_chk_table->size_in_bytes(), oopSize)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
      + round_to(debug_info->data_size()       , oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
    nm = new (nmethod_size)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
      nmethod(method(), nmethod_size, compile_id, entry_bci, offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
              orig_pc_offset, debug_info, dependencies, code_buffer, frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
              oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
              handler_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
              nul_chk_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
              compiler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
              comp_level);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
    if (nm != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
      // To make dependency checking during class loading fast, record
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
      // the nmethod dependencies in the classes it is dependent on.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
      // This allows the dependency checking code to simply walk the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
      // class hierarchy above the loaded class, checking only nmethods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
      // which are dependent on those classes.  The slow way is to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
      // check every nmethod for dependencies which makes it linear in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
      // the number of methods compiled.  For applications with a lot
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
      // classes the slow way is too slow.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
      for (Dependencies::DepStream deps(nm); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
        klassOop klass = deps.context_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
        if (klass == NULL)  continue;  // ignore things like evol_method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
        // record this nmethod as dependent on this klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
        instanceKlass::cast(klass)->add_dependent_nmethod(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
    NOT_PRODUCT(if (nm != NULL)  nmethod_stats.note_nmethod(nm));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
    if (PrintAssembly && nm != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
      Disassembler::decode(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
  // verify nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
  debug_only(if (nm) nm->verify();) // might block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
  if (nm != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
    nm->log_new_nmethod();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
  // done
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
  return nm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
// For native wrappers
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
nmethod::nmethod(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
  methodOop method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  int nmethod_size,
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
   616
  int compile_id,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
  CodeOffsets* offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
  CodeBuffer* code_buffer,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
  int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  ByteSize basic_lock_owner_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
  ByteSize basic_lock_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  OopMapSet* oop_maps )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
  : CodeBlob("native nmethod", code_buffer, sizeof(nmethod),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
             nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps),
7444
be338e543a57 7004582: Add GetThisObject() function to JVMTI 1.2
kamg
parents: 7397
diff changeset
   625
  _native_receiver_sp_offset(basic_lock_owner_sp_offset),
be338e543a57 7004582: Add GetThisObject() function to JVMTI 1.2
kamg
parents: 7397
diff changeset
   626
  _native_basic_lock_sp_offset(basic_lock_sp_offset)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
    debug_only(No_Safepoint_Verifier nsv;)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
    assert_locked_or_safepoint(CodeCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   632
    init_defaults();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
    _method                  = method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
    _entry_bci               = InvocationEntryBci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
    // We have no exception handler or deopt handler make the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
    // values something that will never match a pc like the nmethod vtable entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
    _exception_offset        = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
    _deoptimize_offset       = 0;
4752
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
   639
    _deoptimize_mh_offset    = 0;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
    _orig_pc_offset          = 0;
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   641
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   642
    _consts_offset           = data_offset();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
    _stub_offset             = data_offset();
5686
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   644
    _oops_offset             = data_offset();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   645
    _scopes_data_offset      = _oops_offset          + round_to(code_buffer->total_oop_size(), oopSize);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
    _scopes_pcs_offset       = _scopes_data_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
    _dependencies_offset     = _scopes_pcs_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
    _handler_table_offset    = _dependencies_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
    _nul_chk_table_offset    = _handler_table_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
    _nmethod_end_offset      = _nul_chk_table_offset;
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
   651
    _compile_id              = compile_id;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
    _comp_level              = CompLevel_none;
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   653
    _entry_point             = code_begin()          + offsets->value(CodeOffsets::Entry);
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   654
    _verified_entry_point    = code_begin()          + offsets->value(CodeOffsets::Verified_Entry);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
    _osr_entry_point         = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
    _exception_cache         = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
    _pc_desc_cache.reset_to(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
    code_buffer->copy_oops_to(this);
8725
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8724
diff changeset
   660
    if (ScavengeRootsInCode && detect_scavenge_root_oops()) {
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8724
diff changeset
   661
      CodeCache::add_scavenge_root_nmethod(this);
8c1e3dd5fe1b 7017732: move static fields into Class to prepare for perm gen removal
never
parents: 8724
diff changeset
   662
    }
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   663
    debug_only(verify_scavenge_root_oops());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
    CodeCache::commit(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
  if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
    ttyLocker ttyl;  // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
    // This output goes directly to the tty, not the compiler log.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
    // To enable tools to match it up with the compilation activity,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
    // be sure to tag this tty output with the compile ID.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
    if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
      xtty->begin_head("print_native_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
      xtty->method(_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
      xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
      xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
    // print the header part first
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
    print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
    // then print the requested information
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
    if (PrintNativeNMethods) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
      print_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
      oop_maps->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
    if (PrintRelocations) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
      print_relocations();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
    if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
      xtty->tail("print_native_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  Events::log("Create nmethod " INTPTR_FORMAT, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   695
// For dtrace wrappers
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   696
#ifdef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   697
nmethod::nmethod(
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   698
  methodOop method,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   699
  int nmethod_size,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   700
  CodeOffsets* offsets,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   701
  CodeBuffer* code_buffer,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   702
  int frame_size)
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   703
  : CodeBlob("dtrace nmethod", code_buffer, sizeof(nmethod),
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   704
             nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL),
7444
be338e543a57 7004582: Add GetThisObject() function to JVMTI 1.2
kamg
parents: 7397
diff changeset
   705
  _native_receiver_sp_offset(in_ByteSize(-1)),
be338e543a57 7004582: Add GetThisObject() function to JVMTI 1.2
kamg
parents: 7397
diff changeset
   706
  _native_basic_lock_sp_offset(in_ByteSize(-1))
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   707
{
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   708
  {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   709
    debug_only(No_Safepoint_Verifier nsv;)
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   710
    assert_locked_or_safepoint(CodeCache_lock);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   711
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   712
    init_defaults();
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   713
    _method                  = method;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   714
    _entry_bci               = InvocationEntryBci;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   715
    // We have no exception handler or deopt handler make the
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   716
    // values something that will never match a pc like the nmethod vtable entry
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   717
    _exception_offset        = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   718
    _deoptimize_offset       = 0;
4752
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
   719
    _deoptimize_mh_offset    = 0;
5334
b2d040a8d375 6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents: 4894
diff changeset
   720
    _unwind_handler_offset   = -1;
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   721
    _trap_offset             = offsets->value(CodeOffsets::Dtrace_trap);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   722
    _orig_pc_offset          = 0;
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   723
    _consts_offset           = data_offset();
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   724
    _stub_offset             = data_offset();
5686
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   725
    _oops_offset             = data_offset();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   726
    _scopes_data_offset      = _oops_offset          + round_to(code_buffer->total_oop_size(), oopSize);
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   727
    _scopes_pcs_offset       = _scopes_data_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   728
    _dependencies_offset     = _scopes_pcs_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   729
    _handler_table_offset    = _dependencies_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   730
    _nul_chk_table_offset    = _handler_table_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   731
    _nmethod_end_offset      = _nul_chk_table_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   732
    _compile_id              = 0;  // default
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   733
    _comp_level              = CompLevel_none;
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   734
    _entry_point             = code_begin()          + offsets->value(CodeOffsets::Entry);
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   735
    _verified_entry_point    = code_begin()          + offsets->value(CodeOffsets::Verified_Entry);
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   736
    _osr_entry_point         = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   737
    _exception_cache         = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   738
    _pc_desc_cache.reset_to(NULL);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   739
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   740
    code_buffer->copy_oops_to(this);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   741
    debug_only(verify_scavenge_root_oops());
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   742
    CodeCache::commit(this);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   743
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   744
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   745
  if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   746
    ttyLocker ttyl;  // keep the following output all in one block
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   747
    // This output goes directly to the tty, not the compiler log.
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   748
    // To enable tools to match it up with the compilation activity,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   749
    // be sure to tag this tty output with the compile ID.
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   750
    if (xtty != NULL) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   751
      xtty->begin_head("print_dtrace_nmethod");
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   752
      xtty->method(_method);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   753
      xtty->stamp();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   754
      xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   755
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   756
    // print the header part first
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   757
    print();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   758
    // then print the requested information
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   759
    if (PrintNMethods) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   760
      print_code();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   761
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   762
    if (PrintRelocations) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   763
      print_relocations();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   764
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   765
    if (xtty != NULL) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   766
      xtty->tail("print_dtrace_nmethod");
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   767
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   768
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   769
  Events::log("Create nmethod " INTPTR_FORMAT, this);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   770
}
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   771
#endif // def HAVE_DTRACE_H
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
void* nmethod::operator new(size_t size, int nmethod_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
  // Always leave some room in the CodeCache for I2C/C2I adapters
8672
26a427ab6f32 7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents: 8668
diff changeset
   775
  if (CodeCache::largest_free_block() < CodeCacheMinimumFreeSpace) return NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
  return CodeCache::allocate(nmethod_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
nmethod::nmethod(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
  methodOop method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
  int nmethod_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
  int compile_id,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
  int entry_bci,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
  CodeOffsets* offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
  int orig_pc_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
  DebugInformationRecorder* debug_info,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
  Dependencies* dependencies,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
  CodeBuffer *code_buffer,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
  int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
  OopMapSet* oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
  ExceptionHandlerTable* handler_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
  ImplicitExceptionTable* nul_chk_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  AbstractCompiler* compiler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
  int comp_level
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
  )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
  : CodeBlob("nmethod", code_buffer, sizeof(nmethod),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
             nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps),
7444
be338e543a57 7004582: Add GetThisObject() function to JVMTI 1.2
kamg
parents: 7397
diff changeset
   799
  _native_receiver_sp_offset(in_ByteSize(-1)),
be338e543a57 7004582: Add GetThisObject() function to JVMTI 1.2
kamg
parents: 7397
diff changeset
   800
  _native_basic_lock_sp_offset(in_ByteSize(-1))
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
  assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
    debug_only(No_Safepoint_Verifier nsv;)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
    assert_locked_or_safepoint(CodeCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   807
    init_defaults();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
    _method                  = method;
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
   809
    _entry_bci               = entry_bci;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
    _compile_id              = compile_id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
    _comp_level              = comp_level;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
    _compiler                = compiler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
    _orig_pc_offset          = orig_pc_offset;
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   814
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   815
    // Section offsets
6432
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   816
    _consts_offset           = content_offset()      + code_buffer->total_offset_of(code_buffer->consts());
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   817
    _stub_offset             = content_offset()      + code_buffer->total_offset_of(code_buffer->stubs());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
    // Exception handler and deopt handler are in the stub section
7707
b4ff9fc6d954 6990933: assert(sender_cb) failed: sanity in frame::sender_for_interpreter_frame
twisti
parents: 7397
diff changeset
   820
    assert(offsets->value(CodeOffsets::Exceptions) != -1, "must be set");
b4ff9fc6d954 6990933: assert(sender_cb) failed: sanity in frame::sender_for_interpreter_frame
twisti
parents: 7397
diff changeset
   821
    assert(offsets->value(CodeOffsets::Deopt     ) != -1, "must be set");
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   822
    _exception_offset        = _stub_offset          + offsets->value(CodeOffsets::Exceptions);
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   823
    _deoptimize_offset       = _stub_offset          + offsets->value(CodeOffsets::Deopt);
7707
b4ff9fc6d954 6990933: assert(sender_cb) failed: sanity in frame::sender_for_interpreter_frame
twisti
parents: 7397
diff changeset
   824
    if (offsets->value(CodeOffsets::DeoptMH) != -1) {
6432
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   825
      _deoptimize_mh_offset  = _stub_offset          + offsets->value(CodeOffsets::DeoptMH);
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   826
    } else {
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   827
      _deoptimize_mh_offset  = -1;
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   828
    }
5334
b2d040a8d375 6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents: 4894
diff changeset
   829
    if (offsets->value(CodeOffsets::UnwindHandler) != -1) {
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   830
      _unwind_handler_offset = code_offset()         + offsets->value(CodeOffsets::UnwindHandler);
5334
b2d040a8d375 6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents: 4894
diff changeset
   831
    } else {
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   832
      _unwind_handler_offset = -1;
5334
b2d040a8d375 6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents: 4894
diff changeset
   833
    }
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   834
5686
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   835
    _oops_offset             = data_offset();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   836
    _scopes_data_offset      = _oops_offset          + round_to(code_buffer->total_oop_size (), oopSize);
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   837
    _scopes_pcs_offset       = _scopes_data_offset   + round_to(debug_info->data_size       (), oopSize);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
    _dependencies_offset     = _scopes_pcs_offset    + adjust_pcs_size(debug_info->pcs_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
    _handler_table_offset    = _dependencies_offset  + round_to(dependencies->size_in_bytes (), oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
    _nul_chk_table_offset    = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
    _nmethod_end_offset      = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   843
    _entry_point             = code_begin()          + offsets->value(CodeOffsets::Entry);
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   844
    _verified_entry_point    = code_begin()          + offsets->value(CodeOffsets::Verified_Entry);
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   845
    _osr_entry_point         = code_begin()          + offsets->value(CodeOffsets::OSR_Entry);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
    _exception_cache         = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
    _pc_desc_cache.reset_to(scopes_pcs_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
    // Copy contents of ScopeDescRecorder to nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
    code_buffer->copy_oops_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
    debug_info->copy_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
    dependencies->copy_to(this);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   853
    if (ScavengeRootsInCode && detect_scavenge_root_oops()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   854
      CodeCache::add_scavenge_root_nmethod(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   855
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   856
    debug_only(verify_scavenge_root_oops());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
    CodeCache::commit(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
    // Copy contents of ExceptionHandlerTable to nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
    handler_table->copy_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
    nul_chk_table->copy_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
    // we use the information of entry points to find out if a method is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
    // static or non static
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
    assert(compiler->is_c2() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
           _method->is_static() == (entry_point() == _verified_entry_point),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
           " entry points must be same for static methods and vice versa");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
   871
  bool printnmethods = PrintNMethods
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
   872
    || CompilerOracle::should_print(_method)
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
   873
    || CompilerOracle::has_option_string(_method, "PrintNMethods");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
  if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
    print_nmethod(printnmethods);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
  // Note: Do not verify in here as the CodeCache_lock is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
  //       taken which would conflict with the CompiledIC_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
  //       which taken during the verification of call sites.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
  //       (was bug - gri 10/25/99)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  Events::log("Create nmethod " INTPTR_FORMAT, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
// Print a short set of xml attributes to identify this nmethod.  The
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
// output should be embedded in some other element.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
void nmethod::log_identity(xmlStream* log) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
  log->print(" compile_id='%d'", compile_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
  const char* nm_kind = compile_kind();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
  if (nm_kind != NULL)  log->print(" compile_kind='%s'", nm_kind);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
  if (compiler() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
    log->print(" compiler='%s'", compiler()->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
  }
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6432
diff changeset
   896
  if (TieredCompilation) {
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6432
diff changeset
   897
    log->print(" level='%d'", comp_level());
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6432
diff changeset
   898
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
#define LOG_OFFSET(log, name)                    \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
  if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
    log->print(" " XSTR(name) "_offset='%d'"    , \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
               (intptr_t)name##_begin() - (intptr_t)this)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
void nmethod::log_new_nmethod() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
  if (LogCompilation && xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
    ttyLocker ttyl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
    HandleMark hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
    xtty->begin_elem("nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
    log_identity(xtty);
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   914
    xtty->print(" entry='" INTPTR_FORMAT "' size='%d'", code_begin(), size());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
    xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
    LOG_OFFSET(xtty, relocation);
6432
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
   918
    LOG_OFFSET(xtty, consts);
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
   919
    LOG_OFFSET(xtty, insts);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
    LOG_OFFSET(xtty, stub);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
    LOG_OFFSET(xtty, scopes_data);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
    LOG_OFFSET(xtty, scopes_pcs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
    LOG_OFFSET(xtty, dependencies);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
    LOG_OFFSET(xtty, handler_table);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
    LOG_OFFSET(xtty, nul_chk_table);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
    LOG_OFFSET(xtty, oops);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
    xtty->method(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
    xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
    xtty->end_elem();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
#undef LOG_OFFSET
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
// Print out more verbose output usually for a newly created nmethod.
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
   938
void nmethod::print_on(outputStream* st, const char* msg) const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
  if (st != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
    ttyLocker ttyl;
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
   941
    CompileTask::print_compilation(st, this, msg);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
    if (WizardMode) st->print(" (" INTPTR_FORMAT ")", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
void nmethod::print_nmethod(bool printmethod) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
  ttyLocker ttyl;  // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
  if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
    xtty->begin_head("print_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
    xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
    xtty->end_head();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
  // print the header part first
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
  print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
  // then print the requested information
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
  if (printmethod) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
    print_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
    print_pcs();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
    oop_maps()->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
  if (PrintDebugInfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
    print_scopes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
  if (PrintRelocations) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
    print_relocations();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
  if (PrintDependencies) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
    print_dependencies();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
  if (PrintExceptionHandlers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
    print_handler_table();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
    print_nul_chk_table();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
  if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
    xtty->tail("print_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
5686
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   981
// Promote one word from an assembly-time handle to a live embedded oop.
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   982
inline void nmethod::initialize_immediate_oop(oop* dest, jobject handle) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   983
  if (handle == NULL ||
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   984
      // As a special case, IC oops are initialized to 1 or -1.
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   985
      handle == (jobject) Universe::non_oop_word()) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   986
    (*dest) = (oop) handle;
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   987
  } else {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   988
    (*dest) = JNIHandles::resolve_non_null(handle);
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   989
  }
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   990
}
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   991
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   992
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   993
void nmethod::copy_oops(GrowableArray<jobject>* array) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   994
  //assert(oops_size() == 0, "do this handshake just once, please");
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   995
  int length = array->length();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   996
  assert((address)(oops_begin() + length) <= data_end(), "oops big enough");
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   997
  oop* dest = oops_begin();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   998
  for (int index = 0 ; index < length; index++) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
   999
    initialize_immediate_oop(&dest[index], array->at(index));
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1000
  }
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1001
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1002
  // Now we can fix up all the oops in the code.  We need to do this
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1003
  // in the code because the assembler uses jobjects as placeholders.
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1004
  // The code and relocations have already been initialized by the
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1005
  // CodeBlob constructor, so it is valid even at this early point to
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1006
  // iterate over relocations and patch the code.
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1007
  fix_oop_relocations(NULL, NULL, /*initialize_immediates=*/ true);
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1008
}
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1009
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1010
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1011
bool nmethod::is_at_poll_return(address pc) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1012
  RelocIterator iter(this, pc, pc+1);
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1013
  while (iter.next()) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1014
    if (iter.type() == relocInfo::poll_return_type)
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1015
      return true;
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1016
  }
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1017
  return false;
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1018
}
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1019
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1020
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1021
bool nmethod::is_at_poll_or_poll_return(address pc) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1022
  RelocIterator iter(this, pc, pc+1);
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1023
  while (iter.next()) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1024
    relocInfo::relocType t = iter.type();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1025
    if (t == relocInfo::poll_return_type || t == relocInfo::poll_type)
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1026
      return true;
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1027
  }
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1028
  return false;
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1029
}
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1030
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1031
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1032
void nmethod::fix_oop_relocations(address begin, address end, bool initialize_immediates) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1033
  // re-patch all oop-bearing instructions, just in case some oops moved
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1034
  RelocIterator iter(this, begin, end);
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1035
  while (iter.next()) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1036
    if (iter.type() == relocInfo::oop_type) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1037
      oop_Relocation* reloc = iter.oop_reloc();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1038
      if (initialize_immediates && reloc->oop_is_immediate()) {
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1039
        oop* dest = reloc->oop_addr();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1040
        initialize_immediate_oop(dest, (jobject) *dest);
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1041
      }
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1042
      // Refresh the oop-related bits of this instruction.
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1043
      reloc->fix_oop_relocation();
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1044
    }
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1045
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1046
    // There must not be any interfering patches or breakpoints.
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1047
    assert(!(iter.type() == relocInfo::breakpoint_type
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1048
             && iter.breakpoint_reloc()->active()),
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1049
           "no active breakpoint");
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1050
  }
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1051
}
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1052
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  1053
8724
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1054
void nmethod::verify_oop_relocations() {
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1055
  // Ensure sure that the code matches the current oop values
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1056
  RelocIterator iter(this, NULL, NULL);
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1057
  while (iter.next()) {
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1058
    if (iter.type() == relocInfo::oop_type) {
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1059
      oop_Relocation* reloc = iter.oop_reloc();
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1060
      if (!reloc->oop_is_immediate()) {
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1061
        reloc->verify_oop_relocation();
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1062
      }
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1063
    }
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1064
  }
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1065
}
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1066
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1067
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
ScopeDesc* nmethod::scope_desc_at(address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
  PcDesc* pd = pc_desc_at(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
  guarantee(pd != NULL, "scope must be present");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
  return new ScopeDesc(this, pd->scope_decode_offset(),
4894
8a76fd3d098d 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 4891
diff changeset
  1072
                       pd->obj_decode_offset(), pd->should_reexecute(),
8a76fd3d098d 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 4891
diff changeset
  1073
                       pd->return_oop());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
void nmethod::clear_inline_caches() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
  assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
  if (is_zombie()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
  RelocIterator iter(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
    iter.reloc()->clear_inline_cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
void nmethod::cleanup_inline_caches() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
5533
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1092
  assert_locked_or_safepoint(CompiledIC_lock);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
  // If the method is not entrant or zombie then a JMP is plastered over the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
  // first few bytes.  If an oop in the old code was there, that oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
  // should not get GC'd.  Skip the first few bytes of oops on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
  // not-entrant methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
  address low_boundary = verified_entry_point();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
  if (!is_in_use()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
    low_boundary += NativeJump::instruction_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
    // %%% Note:  On SPARC we patch only a 4-byte trap, not a full NativeJump.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
    // This means that the low_boundary is going to be a little too high.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
    // This shouldn't matter, since oops of non-entrant methods are never used.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
    // In fact, why are we bothering to look at oops in a non-entrant method??
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
  // Find all calls in an nmethod, and clear the ones that points to zombie methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
  RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
  while(iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
    switch(iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
      case relocInfo::virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
      case relocInfo::opt_virtual_call_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
        CompiledIC *ic = CompiledIC_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
        // Ok, to lookup references to zombies here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
        CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
        if( cb != NULL && cb->is_nmethod() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
          nmethod* nm = (nmethod*)cb;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
          // Clean inline caches pointing to both zombie and not_entrant methods
4750
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1120
          if (!nm->is_in_use() || (nm->method()->code() != nm)) ic->set_to_clean();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
      case relocInfo::static_call_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
        CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
        CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
        if( cb != NULL && cb->is_nmethod() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
          nmethod* nm = (nmethod*)cb;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
          // Clean inline caches pointing to both zombie and not_entrant methods
4750
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1130
          if (!nm->is_in_use() || (nm->method()->code() != nm)) csc->set_to_clean();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1138
// This is a private interface with the sweeper.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
void nmethod::mark_as_seen_on_stack() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
  assert(is_not_entrant(), "must be a non-entrant method");
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1141
  // Set the traversal mark to ensure that the sweeper does 2
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1142
  // cleaning passes before moving to zombie.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
  set_stack_traversal_mark(NMethodSweeper::traversal_count());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
8661
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1146
// Tell if a non-entrant method can be converted to a zombie (i.e.,
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1147
// there are no activations on the stack, not in use by the VM,
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1148
// and not in use by the ServiceThread)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
bool nmethod::can_not_entrant_be_converted() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
  assert(is_not_entrant(), "must be a non-entrant method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
  // Since the nmethod sweeper only does partial sweep the sweeper's traversal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
  // count can be greater than the stack traversal count before it hits the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
  // nmethod for the second time.
8661
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1155
  return stack_traversal_mark()+1 < NMethodSweeper::traversal_count() &&
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1156
         !is_locked_by_vm();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
void nmethod::inc_decompile_count() {
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6432
diff changeset
  1160
  if (!is_compiled_by_c2()) return;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
  // Could be gated by ProfileTraps, but do not bother...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
  methodOop m = method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
  if (m == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
  methodDataOop mdo = m->method_data();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
  if (mdo == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
  // There is a benign race here.  See comments in methodDataOop.hpp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
  mdo->inc_decompile_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
  post_compiled_method_unload();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
  // Since this nmethod is being unloaded, make sure that dependencies
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
  // recorded in instanceKlasses get flushed and pass non-NULL closure to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
  // indicate that this work is being done during a GC.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
  assert(Universe::heap()->is_gc_active(), "should only be called during gc");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
  assert(is_alive != NULL, "Should be non-NULL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
  // A non-NULL is_alive closure indicates that this is being called during GC.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
  flush_dependencies(is_alive);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
  // Break cycle between nmethod & method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
  if (TraceClassUnloading && WizardMode) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
    tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
                  " unloadable], methodOop(" INTPTR_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
                  "), cause(" INTPTR_FORMAT ")",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
                  this, (address)_method, (address)cause);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1188
    if (!Universe::heap()->is_gc_active())
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1189
      cause->klass()->print();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
  }
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1191
  // Unlink the osr method, so we do not look this up again
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1192
  if (is_osr_method()) {
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1193
    invalidate_osr_method();
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1194
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
  // If _method is already NULL the methodOop is about to be unloaded,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
  // so we don't have to break the cycle. Note that it is possible to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
  // have the methodOop live here, in case we unload the nmethod because
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
  // it is pointing to some oop (other than the methodOop) being unloaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
  if (_method != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
    // OSR methods point to the methodOop, but the methodOop does not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
    // point back!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
    if (_method->code() == this) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
      _method->clear_code(); // Break a cycle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
    _method = NULL;            // Clear the method of this dead nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
  // Make the class unloaded - i.e., change state and notify sweeper
5533
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1208
  assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
  if (is_in_use()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
    // Transitioning directly from live to unloaded -- so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
    // we need to force a cache clean-up; remember this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
    // for later on.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
    CodeCache::set_needs_cache_clean(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
  }
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1215
  _state = unloaded;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1217
  // Log the unloading.
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1218
  log_state_change();
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1219
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
  // The methodOop is gone at this point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
  assert(_method == NULL, "Tautology");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1223
  set_osr_link(NULL);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1224
  //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
  NMethodSweeper::notify(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
void nmethod::invalidate_osr_method() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
  assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
  // Remove from list of active nmethods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
  if (method() != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
    instanceKlass::cast(method()->method_holder())->remove_osr_nmethod(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
  // Set entry as invalid
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
  _entry_bci = InvalidOSREntryBci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1237
void nmethod::log_state_change() const {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
  if (LogCompilation) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
    if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
      ttyLocker ttyl;  // keep the following output all in one block
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1241
      if (_state == unloaded) {
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1242
        xtty->begin_elem("make_unloaded thread='" UINTX_FORMAT "'",
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1243
                         os::current_thread_id());
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1244
      } else {
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1245
        xtty->begin_elem("make_not_entrant thread='" UINTX_FORMAT "'%s",
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1246
                         os::current_thread_id(),
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1247
                         (_state == zombie ? " zombie='1'" : ""));
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1248
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
      log_identity(xtty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
      xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
      xtty->end_elem();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
  }
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1254
  if (PrintCompilation && _state != unloaded) {
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  1255
    print_on(tty, _state == zombie ? "made zombie" : "made not entrant");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
// Common functionality for both make_not_entrant and make_zombie
4570
43d30f43697e 6914002: unsigned compare problem after 5057818
never
parents: 4567
diff changeset
  1260
bool nmethod::make_not_entrant_or_zombie(unsigned int state) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
  assert(state == zombie || state == not_entrant, "must be zombie or not_entrant");
8661
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1262
  assert(!is_zombie(), "should not already be a zombie");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1264
  // Make sure neither the nmethod nor the method is flushed in case of a safepoint in code below.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
  nmethodLocker nml(this);
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1266
  methodHandle the_method(method());
6268
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1267
  No_Safepoint_Verifier nsv;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
  {
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1270
    // invalidate osr nmethod before acquiring the patching lock since
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1271
    // they both acquire leaf locks and we don't want a deadlock.
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1272
    // This logic is equivalent to the logic below for patching the
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1273
    // verified entry point of regular methods.
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1274
    if (is_osr_method()) {
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1275
      // this effectively makes the osr nmethod not entrant
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1276
      invalidate_osr_method();
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1277
    }
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1278
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
    // Enter critical section.  Does not block for safepoint.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
    MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1281
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1282
    if (_state == state) {
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1283
      // another thread already performed this transition so nothing
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1284
      // to do, but return false to indicate this.
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1285
      return false;
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1286
    }
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1287
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
    // The caller can be calling the method statically or through an inline
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
    // cache call.
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1290
    if (!is_osr_method() && !is_not_entrant()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
      NativeJump::patch_verified_entry(entry_point(), verified_entry_point(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
                  SharedRuntime::get_handle_wrong_method_stub());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1295
    if (is_in_use()) {
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1296
      // It's a true state change, so mark the method as decompiled.
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1297
      // Do it only for transition from alive.
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1298
      inc_decompile_count();
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1299
    }
4754
8aef16f24e16 6614597: Performance variability in jvm2008 xml.validation
kvn
parents: 4752
diff changeset
  1300
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
    // Change state
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1302
    _state = state;
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1303
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1304
    // Log the transition once
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1305
    log_state_change();
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1306
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1307
    // Remove nmethod from method.
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1308
    // We need to check if both the _code and _from_compiled_code_entry_point
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1309
    // refer to this nmethod because there is a race in setting these two fields
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1310
    // in methodOop as seen in bugid 4947125.
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1311
    // If the vep() points to the zombie nmethod, the memory for the nmethod
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1312
    // could be flushed and the compiler and vtable stubs could still call
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1313
    // through it.
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1314
    if (method() != NULL && (method()->code() == this ||
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1315
                             method()->from_compiled_entry() == verified_entry_point())) {
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1316
      HandleMark hm;
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1317
      method()->clear_code();
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1318
    }
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1319
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1320
    if (state == not_entrant) {
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1321
      mark_as_seen_on_stack();
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1322
    }
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1323
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
  } // leave critical region under Patching_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
5533
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1326
  // When the nmethod becomes zombie it is no longer alive so the
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1327
  // dependencies must be flushed.  nmethods in the not_entrant
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1328
  // state will be flushed later when the transition to zombie
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1329
  // happens or they get unloaded.
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1330
  if (state == zombie) {
6268
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1331
    {
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1332
      // Flushing dependecies must be done before any possible
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1333
      // safepoint can sneak in, otherwise the oops used by the
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1334
      // dependency logic could have become stale.
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1335
      MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1336
      flush_dependencies(NULL);
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1337
    }
5924
dc9d04930c82 6965184: possible races in make_not_entrant_or_zombie
never
parents: 5896
diff changeset
  1338
8661
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1339
    // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1340
    // event and it hasn't already been reported for this nmethod then
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1341
    // report it now. The event may have been reported earilier if the GC
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1342
    // marked it for unloading). JvmtiDeferredEventQueue support means
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1343
    // we no longer go to a safepoint here.
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1344
    post_compiled_method_unload();
6268
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1345
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1346
#ifdef ASSERT
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1347
    // It's no longer safe to access the oops section since zombie
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1348
    // nmethods aren't scanned for GC.
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1349
    _oops_are_stale = true;
9e96dde307e9 6974176: ShouldNotReachHere, instanceKlass.cpp:1426
never
parents: 6187
diff changeset
  1350
#endif
5533
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1351
  } else {
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1352
    assert(state == not_entrant, "other cases may need to be handled differently");
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1353
  }
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1354
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
  if (TraceCreateZombies) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
    tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
  // Make sweeper aware that there is a zombie method that needs to be removed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
  NMethodSweeper::notify(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
4479
5686407cde7a 5057818: codecache full and compiler disabled in bigapps fastdebug run
never
parents: 3913
diff changeset
  1362
  return true;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
void nmethod::flush() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
  // Note that there are no valid oops in the nmethod anymore.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
  assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
  assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
  assert (!is_locked_by_vm(), "locked methods shouldn't be flushed");
5533
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1371
  assert_locked_or_safepoint(CodeCache_lock);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
  // completely deallocate this method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
  EventMark m("flushing nmethod " INTPTR_FORMAT " %s", this, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
  if (PrintMethodFlushing) {
4750
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1376
    tty->print_cr("*flushing nmethod %3d/" INTPTR_FORMAT ". Live blobs:" UINT32_FORMAT "/Free CodeCache:" SIZE_FORMAT "Kb",
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1377
        _compile_id, this, CodeCache::nof_blobs(), CodeCache::unallocated_capacity()/1024);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
  // We need to deallocate any ExceptionCache data.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
  // Note that we do not need to grab the nmethod lock for this, it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
  // better be thread safe if we're disposing of it!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
  ExceptionCache* ec = exception_cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
  set_exception_cache(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
  while(ec != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
    ExceptionCache* next = ec->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
    delete ec;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
    ec = next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1391
  if (on_scavenge_root_list()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1392
    CodeCache::drop_scavenge_root_nmethod(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1393
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1394
4750
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1395
  if (is_speculatively_disconnected()) {
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1396
    CodeCache::remove_saved_code(this);
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1397
  }
71fd601907dc 4360113: Evict nmethods when code cache gets full
kvn
parents: 4749
diff changeset
  1398
6187
4fa7845f7c14 6976186: integrate Shark HotSpot changes
twisti
parents: 6186
diff changeset
  1399
#ifdef SHARK
6771
3f9a5f169070 6990549: Zero and Shark fixes after 6978355 and 6953144
twisti
parents: 6454
diff changeset
  1400
  ((SharkCompiler *) compiler())->free_compiled_method(insts_begin());
6187
4fa7845f7c14 6976186: integrate Shark HotSpot changes
twisti
parents: 6186
diff changeset
  1401
#endif // SHARK
4fa7845f7c14 6976186: integrate Shark HotSpot changes
twisti
parents: 6186
diff changeset
  1402
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
  ((CodeBlob*)(this))->flush();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
  CodeCache::free(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
// Notify all classes this nmethod is dependent on that it is no
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
// longer dependent. This should only be called in two situations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
// First, when a nmethod transitions to a zombie all dependents need
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
// to be clear.  Since zombification happens at a safepoint there's no
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
// synchronization issues.  The second place is a little more tricky.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
// During phase 1 of mark sweep class unloading may happen and as a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
// result some nmethods may get unloaded.  In this case the flushing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
// of dependencies must happen during phase 1 since after GC any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
// dependencies in the unloaded nmethod won't be updated, so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
// traversing the dependency information in unsafe.  In that case this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
// function is called with a non-NULL argument and this function only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
// notifies instanceKlasses that are reachable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
void nmethod::flush_dependencies(BoolObjectClosure* is_alive) {
5533
e8d9ff82ec62 6950075: nmethod sweeper should operate concurrently
never
parents: 5403
diff changeset
  1424
  assert_locked_or_safepoint(CodeCache_lock);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
  assert(Universe::heap()->is_gc_active() == (is_alive != NULL),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
  "is_alive is non-NULL if and only if we are called during GC");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
  if (!has_flushed_dependencies()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
    set_has_flushed_dependencies();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
    for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1430
      klassOop klass = deps.context_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
      if (klass == NULL)  continue;  // ignore things like evol_method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
      // During GC the is_alive closure is non-NULL, and is used to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
      // determine liveness of dependees that need to be updated.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1435
      if (is_alive == NULL || is_alive->do_object_b(klass)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1436
        instanceKlass::cast(klass)->remove_dependent_nmethod(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1437
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
// If this oop is not live, the nmethod can be unloaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
bool nmethod::can_unload(BoolObjectClosure* is_alive,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
                         OopClosure* keep_alive,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
                         oop* root, bool unloading_occurred) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
  assert(root != NULL, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
  oop obj = *root;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
  if (obj == NULL || is_alive->do_object_b(obj)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
  if (obj->is_compiledICHolder()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
    compiledICHolderOop cichk_oop = compiledICHolderOop(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
    if (is_alive->do_object_b(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
          cichk_oop->holder_method()->method_holder()) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
        is_alive->do_object_b(cichk_oop->holder_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
      // The oop should be kept alive
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
      keep_alive->do_oop(root);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
  }
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1462
  // If ScavengeRootsInCode is true, an nmethod might be unloaded
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1463
  // simply because one of its constant oops has gone dead.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1464
  // No actual classes need to be unloaded in order for this to occur.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1465
  assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
  make_unloaded(is_alive, obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
// ------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
// post_compiled_method_load_event
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
// new method for install_code() path
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
// Transfer information from compilation to jvmti
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
void nmethod::post_compiled_method_load_event() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
  methodOop moop = method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
  HS_DTRACE_PROBE8(hotspot, compiled__method__load,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
      moop->klass_name()->bytes(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
      moop->klass_name()->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1480
      moop->name()->bytes(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
      moop->name()->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
      moop->signature()->bytes(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
      moop->signature()->utf8_length(),
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  1484
      insts_begin(), insts_size());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
5896
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1486
  if (JvmtiExport::should_post_compiled_method_load() ||
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1487
      JvmtiExport::should_post_compiled_method_unload()) {
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1488
    get_and_cache_jmethod_id();
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1489
  }
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1490
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
  if (JvmtiExport::should_post_compiled_method_load()) {
8110
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1492
    // Let the Service thread (which is a real Java thread) post the event
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1493
    MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag);
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1494
    JvmtiDeferredEventQueue::enqueue(
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1495
      JvmtiDeferredEvent::compiled_method_load_event(this));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
5896
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1499
jmethodID nmethod::get_and_cache_jmethod_id() {
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1500
  if (_jmethod_id == NULL) {
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1501
    // Cache the jmethod_id since it can no longer be looked up once the
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1502
    // method itself has been marked for unloading.
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1503
    _jmethod_id = method()->jmethod_id();
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1504
  }
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1505
  return _jmethod_id;
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1506
}
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1507
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1508
void nmethod::post_compiled_method_unload() {
5700
a78767273dc1 6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents: 5686
diff changeset
  1509
  if (unload_reported()) {
a78767273dc1 6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents: 5686
diff changeset
  1510
    // During unloading we transition to unloaded and then to zombie
a78767273dc1 6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents: 5686
diff changeset
  1511
    // and the unloading is reported during the first transition.
a78767273dc1 6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents: 5686
diff changeset
  1512
    return;
a78767273dc1 6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents: 5686
diff changeset
  1513
  }
a78767273dc1 6956931: assert(SafepointSynchronize::is_at_safepoint()) failed: must be executed at a safepoint
never
parents: 5686
diff changeset
  1514
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
  assert(_method != NULL && !is_unloaded(), "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
  DTRACE_METHOD_UNLOAD_PROBE(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
  // If a JVMTI agent has enabled the CompiledMethodUnload event then
5896
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1519
  // post the event. Sometime later this nmethod will be made a zombie
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1520
  // by the sweeper but the methodOop will not be valid at that point.
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1521
  // If the _jmethod_id is null then no load event was ever requested
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1522
  // so don't bother posting the unload.  The main reason for this is
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1523
  // that the jmethodID is a weak reference to the methodOop so if
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1524
  // it's being unloaded there's no way to look it up since the weak
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1525
  // ref will have been cleared.
c60924a89622 6656830: assert((*p)->is_oop(),"expected an oop while scanning weak refs")
never
parents: 5882
diff changeset
  1526
  if (_jmethod_id != NULL && JvmtiExport::should_post_compiled_method_unload()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
    assert(!unload_reported(), "already unloaded");
8110
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1528
    JvmtiDeferredEvent event =
8661
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  1529
      JvmtiDeferredEvent::compiled_method_unload_event(this,
8110
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1530
          _jmethod_id, insts_begin());
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1531
    if (SafepointSynchronize::is_at_safepoint()) {
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1532
      // Don't want to take the queueing lock. Add it as pending and
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1533
      // it will get enqueued later.
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1534
      JvmtiDeferredEventQueue::add_pending_event(event);
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1535
    } else {
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1536
      MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag);
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1537
      JvmtiDeferredEventQueue::enqueue(event);
c992c8d52344 6766644: Redefinition of compiled method fails with assertion "Can not load classes with the Compiler thread"
kamg
parents: 8076
diff changeset
  1538
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
  // The JVMTI CompiledMethodUnload event can be enabled or disabled at
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
  // any time. As the nmethod is being unloaded now we mark it has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
  // having the unload event reported - this will ensure that we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
  // attempt to report the event in the unlikely scenario where the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
  // event is enabled at the time the nmethod is made a zombie.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
  set_unload_reported();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
// This is called at the end of the strong tracing/marking phase of a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
// GC to unload an nmethod if it contains otherwise unreachable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
// oops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
void nmethod::do_unloading(BoolObjectClosure* is_alive,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
                           OopClosure* keep_alive, bool unloading_occurred) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
  // Make sure the oop's ready to receive visitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
  assert(!is_zombie() && !is_unloaded(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
         "should not call follow on zombie or unloaded nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
  // If the method is not entrant then a JMP is plastered over the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1560
  // first few bytes.  If an oop in the old code was there, that oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
  // should not get GC'd.  Skip the first few bytes of oops on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
  // not-entrant methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
  address low_boundary = verified_entry_point();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
  if (is_not_entrant()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
    low_boundary += NativeJump::instruction_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
    // %%% Note:  On SPARC we patch only a 4-byte trap, not a full NativeJump.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
    // (See comment above.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
  // The RedefineClasses() API can cause the class unloading invariant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
  // to no longer be true. See jvmtiExport.hpp for details.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
  // Also, leave a debugging breadcrumb in local flag.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
  bool a_class_was_redefined = JvmtiExport::has_redefined_a_class();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
  if (a_class_was_redefined) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
    // This set of the unloading_occurred flag is done before the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
    // call to post_compiled_method_unload() so that the unloading
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
    // of this nmethod is reported.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
    unloading_occurred = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
  // Follow methodOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
  if (can_unload(is_alive, keep_alive, (oop*)&_method, unloading_occurred)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
  // Exception cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
  ExceptionCache* ec = exception_cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
  while (ec != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
    oop* ex_addr = (oop*)ec->exception_type_addr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
    oop ex = *ex_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
    ExceptionCache* next_ec = ec->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
    if (ex != NULL && !is_alive->do_object_b(ex)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
      assert(!ex->is_compiledICHolder(), "Possible error here");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
      remove_from_exception_cache(ec);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
    ec = next_ec;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
  // If class unloading occurred we first iterate over all inline caches and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
  // clear ICs where the cached oop is referring to an unloaded klass or method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
  // The remaining live cached oops will be traversed in the relocInfo::oop_type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
  // iteration below.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
  if (unloading_occurred) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
    RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
    while(iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
      if (iter.type() == relocInfo::virtual_call_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
        CompiledIC *ic = CompiledIC_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
        oop ic_oop = ic->cached_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
        if (ic_oop != NULL && !is_alive->do_object_b(ic_oop)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
          // The only exception is compiledICHolder oops which may
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
          // yet be marked below. (We check this further below).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
          if (ic_oop->is_compiledICHolder()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
            compiledICHolderOop cichk_oop = compiledICHolderOop(ic_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
            if (is_alive->do_object_b(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
                  cichk_oop->holder_method()->method_holder()) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
                is_alive->do_object_b(cichk_oop->holder_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
              continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1620
          ic->set_to_clean();
5402
c51fd0c1d005 6888953: some calls to function-like macros are missing semicolons
jcoomes
parents: 5334
diff changeset
  1621
          assert(ic->cached_oop() == NULL,
c51fd0c1d005 6888953: some calls to function-like macros are missing semicolons
jcoomes
parents: 5334
diff changeset
  1622
                 "cached oop in IC should be cleared");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
  // Compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
  RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
    if (iter.type() == relocInfo::oop_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
      oop_Relocation* r = iter.oop_reloc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
      // In this loop, we must only traverse those oops directly embedded in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
      // the code.  Other oops (oop_index>0) are seen as part of scopes_oops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
      assert(1 == (r->oop_is_immediate()) +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
                  (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
             "oop must be found in exactly one place");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
      if (r->oop_is_immediate() && r->oop_value() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
        if (can_unload(is_alive, keep_alive, r->oop_addr(), unloading_occurred)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
          return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
  // Scopes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
  for (oop* p = oops_begin(); p < oops_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
    if (*p == Universe::non_oop_word())  continue;  // skip non-oops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
    if (can_unload(is_alive, keep_alive, p, unloading_occurred)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1651
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
  // This nmethod was not unloaded; check below that all CompiledICs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
  // refer to marked oops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
    RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
    while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
      if (iter.type() == relocInfo::virtual_call_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
         CompiledIC *ic = CompiledIC_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
         oop ic_oop = ic->cached_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
         assert(ic_oop == NULL || is_alive->do_object_b(ic_oop),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
                "Found unmarked ic_oop in reachable nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
       }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
#endif // !PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1672
// This method is called twice during GC -- once while
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1673
// tracing the "active" nmethods on thread stacks during
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1674
// the (strong) marking phase, and then again when walking
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1675
// the code cache contents during the weak roots processing
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1676
// phase. The two uses are distinguished by means of the
3913
e049e6b81e11 6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
jrose
parents: 3912
diff changeset
  1677
// 'do_strong_roots_only' flag, which is true in the first
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1678
// case. We want to walk the weak roots in the nmethod
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1679
// only in the second case. The weak roots in the nmethod
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1680
// are the oops in the ExceptionCache and the InlineCache
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1681
// oops.
3913
e049e6b81e11 6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
jrose
parents: 3912
diff changeset
  1682
void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
  // make sure the oops ready to receive visitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
  assert(!is_zombie() && !is_unloaded(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
         "should not call follow on zombie or unloaded nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
  // If the method is not entrant or zombie then a JMP is plastered over the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
  // first few bytes.  If an oop in the old code was there, that oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1689
  // should not get GC'd.  Skip the first few bytes of oops on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
  // not-entrant methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
  address low_boundary = verified_entry_point();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
  if (is_not_entrant()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
    low_boundary += NativeJump::instruction_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
    // %%% Note:  On SPARC we patch only a 4-byte trap, not a full NativeJump.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
    // (See comment above.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
  // Compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
  f->do_oop((oop*) &_method);
3913
e049e6b81e11 6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
jrose
parents: 3912
diff changeset
  1700
  if (!do_strong_roots_only) {
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1701
    // weak roots processing phase -- update ExceptionCache oops
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1702
    ExceptionCache* ec = exception_cache();
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1703
    while(ec != NULL) {
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1704
      f->do_oop((oop*)ec->exception_type_addr());
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1705
      ec = ec->next();
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1706
    }
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1707
  } // Else strong roots phase -- skip oops in ExceptionCache
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
  RelocIterator iter(this, low_boundary);
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1710
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
    if (iter.type() == relocInfo::oop_type ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
      oop_Relocation* r = iter.oop_reloc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
      // In this loop, we must only follow those oops directly embedded in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
      // the code.  Other oops (oop_index>0) are seen as part of scopes_oops.
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1716
      assert(1 == (r->oop_is_immediate()) +
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1717
                   (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()),
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1718
             "oop must be found in exactly one place");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
      if (r->oop_is_immediate() && r->oop_value() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
        f->do_oop(r->oop_addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
  // Scopes
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1726
  // This includes oop constants not inlined in the code stream.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
  for (oop* p = oops_begin(); p < oops_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
    if (*p == Universe::non_oop_word())  continue;  // skip non-oops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
    f->do_oop(p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1733
#define NMETHOD_SENTINEL ((nmethod*)badAddress)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1734
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1735
nmethod* volatile nmethod::_oops_do_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1736
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1737
// An nmethod is "marked" if its _mark_link is set non-null.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1738
// Even if it is the end of the linked list, it will have a non-null link value,
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1739
// as long as it is on the list.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1740
// This code must be MP safe, because it is used from parallel GC passes.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1741
bool nmethod::test_set_oops_do_mark() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1742
  assert(nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1743
  nmethod* observed_mark_link = _oops_do_mark_link;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1744
  if (observed_mark_link == NULL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1745
    // Claim this nmethod for this thread to mark.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1746
    observed_mark_link = (nmethod*)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1747
      Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_link, NULL);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1748
    if (observed_mark_link == NULL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1749
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1750
      // Atomically append this nmethod (now claimed) to the head of the list:
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1751
      nmethod* observed_mark_nmethods = _oops_do_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1752
      for (;;) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1753
        nmethod* required_mark_nmethods = observed_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1754
        _oops_do_mark_link = required_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1755
        observed_mark_nmethods = (nmethod*)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1756
          Atomic::cmpxchg_ptr(this, &_oops_do_mark_nmethods, required_mark_nmethods);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1757
        if (observed_mark_nmethods == required_mark_nmethods)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1758
          break;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1759
      }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1760
      // Mark was clear when we first saw this guy.
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  1761
      NOT_PRODUCT(if (TraceScavenge)  print_on(tty, "oops_do, mark"));
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1762
      return false;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1763
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1764
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1765
  // On fall through, another racing thread marked this nmethod before we did.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1766
  return true;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1767
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1768
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1769
void nmethod::oops_do_marking_prologue() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1770
  NOT_PRODUCT(if (TraceScavenge)  tty->print_cr("[oops_do_marking_prologue"));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1771
  assert(_oops_do_mark_nmethods == NULL, "must not call oops_do_marking_prologue twice in a row");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1772
  // We use cmpxchg_ptr instead of regular assignment here because the user
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1773
  // may fork a bunch of threads, and we need them all to see the same state.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1774
  void* observed = Atomic::cmpxchg_ptr(NMETHOD_SENTINEL, &_oops_do_mark_nmethods, NULL);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1775
  guarantee(observed == NULL, "no races in this sequential code");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1776
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1777
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1778
void nmethod::oops_do_marking_epilogue() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1779
  assert(_oops_do_mark_nmethods != NULL, "must not call oops_do_marking_epilogue twice in a row");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1780
  nmethod* cur = _oops_do_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1781
  while (cur != NMETHOD_SENTINEL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1782
    assert(cur != NULL, "not NULL-terminated");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1783
    nmethod* next = cur->_oops_do_mark_link;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1784
    cur->_oops_do_mark_link = NULL;
8724
693c6b883b54 7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents: 8679
diff changeset
  1785
    cur->fix_oop_relocations();
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  1786
    NOT_PRODUCT(if (TraceScavenge)  cur->print_on(tty, "oops_do, unmark"));
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1787
    cur = next;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1788
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1789
  void* required = _oops_do_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1790
  void* observed = Atomic::cmpxchg_ptr(NULL, &_oops_do_mark_nmethods, required);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1791
  guarantee(observed == required, "no races in this sequential code");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1792
  NOT_PRODUCT(if (TraceScavenge)  tty->print_cr("oops_do_marking_epilogue]"));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1793
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1794
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1795
class DetectScavengeRoot: public OopClosure {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1796
  bool     _detected_scavenge_root;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1797
public:
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1798
  DetectScavengeRoot() : _detected_scavenge_root(false)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1799
  { NOT_PRODUCT(_print_nm = NULL); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1800
  bool detected_scavenge_root() { return _detected_scavenge_root; }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1801
  virtual void do_oop(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1802
    if ((*p) != NULL && (*p)->is_scavengable()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1803
      NOT_PRODUCT(maybe_print(p));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1804
      _detected_scavenge_root = true;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1805
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1806
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1807
  virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1808
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1809
#ifndef PRODUCT
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1810
  nmethod* _print_nm;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1811
  void maybe_print(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1812
    if (_print_nm == NULL)  return;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1813
    if (!_detected_scavenge_root)  _print_nm->print_on(tty, "new scavenge root");
9935
51267b5e1a3d 7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents: 8872
diff changeset
  1814
    tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")",
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1815
                  _print_nm, (int)((intptr_t)p - (intptr_t)_print_nm),
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1816
                  (intptr_t)(*p), (intptr_t)p);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1817
    (*p)->print();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1818
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1819
#endif //PRODUCT
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1820
};
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1821
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1822
bool nmethod::detect_scavenge_root_oops() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1823
  DetectScavengeRoot detect_scavenge_root;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1824
  NOT_PRODUCT(if (TraceScavenge)  detect_scavenge_root._print_nm = this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1825
  oops_do(&detect_scavenge_root);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1826
  return detect_scavenge_root.detected_scavenge_root();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1827
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1828
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
// Method that knows how to preserve outgoing arguments at call. This method must be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
// called with a frame corresponding to a Java invoke
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) {
6187
4fa7845f7c14 6976186: integrate Shark HotSpot changes
twisti
parents: 6186
diff changeset
  1832
#ifndef SHARK
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
  if (!method()->is_native()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
    SimpleScopeDesc ssd(this, fr.pc());
7913
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  1835
    Bytecode_invoke call(ssd.method(), ssd.bci());
10007
43d4a6542551 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 9935
diff changeset
  1836
    // compiled invokedynamic call sites have an implicit receiver at
43d4a6542551 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 9935
diff changeset
  1837
    // resolution time, so make sure it gets GC'ed.
43d4a6542551 7057587: JSR 292 - crash with jruby in test/test_respond_to.rb
never
parents: 9935
diff changeset
  1838
    bool has_receiver = !call.is_invokestatic();
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7913
diff changeset
  1839
    Symbol* signature = call.signature();
4567
7fc02fbe5c7a 6893268: additional dynamic language related optimizations in C2
twisti
parents: 4564
diff changeset
  1840
    fr.oops_compiled_arguments_do(signature, has_receiver, reg_map, f);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
  }
6187
4fa7845f7c14 6976186: integrate Shark HotSpot changes
twisti
parents: 6186
diff changeset
  1842
#endif // !SHARK
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
oop nmethod::embeddedOop_at(u_char* p) {
8668
32feee9b0d25 7024866: # assert(limit == NULL || limit <= nm->code_end()) failed: in bounds
never
parents: 8495
diff changeset
  1847
  RelocIterator iter(this, p, p + 1);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
  while (iter.next())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
    if (iter.type() == relocInfo::oop_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
      return iter.oop_reloc()->oop_value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
inline bool includes(void* p, void* from, void* to) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
  return from <= p && p < to;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
  assert(count >= 2, "must be sentinel values, at least");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
  // must be sorted and unique; we do a binary search in find_pc_desc()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
  int prev_offset = pcs[0].pc_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
  assert(prev_offset == PcDesc::lower_offset_limit,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
         "must start with a sentinel");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
  for (int i = 1; i < count; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
    int this_offset = pcs[i].pc_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
    assert(this_offset > prev_offset, "offsets must be sorted");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
    prev_offset = this_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
  assert(prev_offset == PcDesc::upper_offset_limit,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
         "must end with a sentinel");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
#endif //ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
4564
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1878
  // Search for MethodHandle invokes and tag the nmethod.
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1879
  for (int i = 0; i < count; i++) {
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1880
    if (pcs[i].is_method_handle_invoke()) {
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1881
      set_has_method_handle_invokes(true);
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1882
      break;
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1883
    }
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1884
  }
7707
b4ff9fc6d954 6990933: assert(sender_cb) failed: sanity in frame::sender_for_interpreter_frame
twisti
parents: 7397
diff changeset
  1885
  assert(has_method_handle_invokes() == (_deoptimize_mh_offset != -1), "must have deopt mh handler");
4564
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  1886
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
  int size = count * sizeof(PcDesc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
  assert(scopes_pcs_size() >= size, "oob");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
  memcpy(scopes_pcs_begin(), pcs, size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
  // Adjust the final sentinel downward.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
  PcDesc* last_pc = &scopes_pcs_begin()[count-1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
  assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity");
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  1894
  last_pc->set_pc_offset(content_size() + 1);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
  for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
    // Fill any rounding gaps with copies of the last record.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
    last_pc[1] = last_pc[0];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
  // The following assert could fail if sizeof(PcDesc) is not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
  // an integral multiple of oopSize (the rounding term).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
  // If it fails, change the logic to always allocate a multiple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
  // of sizeof(PcDesc), and fill unused words with copies of *last_pc.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
  assert(last_pc + 1 == scopes_pcs_end(), "must match exactly");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
void nmethod::copy_scopes_data(u_char* buffer, int size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
  assert(scopes_data_size() >= size, "oob");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
  memcpy(scopes_data_begin(), buffer, size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
  PcDesc* lower = nm->scopes_pcs_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
  PcDesc* upper = nm->scopes_pcs_end();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
  lower += 1; // exclude initial sentinel
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1917
  PcDesc* res = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1918
  for (PcDesc* p = lower; p < upper; p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
    NOT_PRODUCT(--nmethod_stats.pc_desc_tests);  // don't count this call to match_desc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1920
    if (match_desc(p, pc_offset, approximate)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
      if (res == NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
        res = p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
      else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
        res = (PcDesc*) badAddress;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
  return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
// Finds a PcDesc with real-pc equal to "pc"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) {
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  1934
  address base_address = code_begin();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
  if ((pc < base_address) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
      (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
    return NULL;  // PC is wildly out of range
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
  int pc_offset = (int) (pc - base_address);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
  // Check the PcDesc cache if it contains the desired PcDesc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
  // (This as an almost 100% hit rate.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
  PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
  if (res != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
    assert(res == linear_search(this, pc_offset, approximate), "cache ok");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
    return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
  // Fallback algorithm: quasi-linear search for the PcDesc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
  // Find the last pc_offset less than the given offset.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
  // The successor must be the required match, if there is a match at all.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
  // (Use a fixed radix to avoid expensive affine pointer arithmetic.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
  PcDesc* lower = scopes_pcs_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
  PcDesc* upper = scopes_pcs_end();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
  upper -= 1; // exclude final sentinel
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
  if (lower >= upper)  return NULL;  // native method; no PcDescs at all
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
#define assert_LU_OK \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
  /* invariant on lower..upper during the following search: */ \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
  assert(lower->pc_offset() <  pc_offset, "sanity"); \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
  assert(upper->pc_offset() >= pc_offset, "sanity")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
  assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
  // Use the last successful return as a split point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
  PcDesc* mid = _pc_desc_cache.last_pc_desc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
  NOT_PRODUCT(++nmethod_stats.pc_desc_searches);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
  if (mid->pc_offset() < pc_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
    lower = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
    upper = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
  // Take giant steps at first (4096, then 256, then 16, then 1)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
  const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
  const int RADIX = (1 << LOG2_RADIX);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
  for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
    while ((mid = lower + step) < upper) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1978
      assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1979
      NOT_PRODUCT(++nmethod_stats.pc_desc_searches);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1980
      if (mid->pc_offset() < pc_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1981
        lower = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1982
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
        upper = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1985
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1986
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1987
    assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1988
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1989
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1990
  // Sneak up on the value with a linear search of length ~16.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1991
  while (true) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1992
    assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
    mid = lower + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1994
    NOT_PRODUCT(++nmethod_stats.pc_desc_searches);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
    if (mid->pc_offset() < pc_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
      lower = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
      upper = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
#undef assert_LU_OK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
  if (match_desc(upper, pc_offset, approximate)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
    assert(upper == linear_search(this, pc_offset, approximate), "search ok");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
    _pc_desc_cache.add_pc_desc(upper);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
    return upper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
    assert(NULL == linear_search(this, pc_offset, approximate), "search ok");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
bool nmethod::check_all_dependencies() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
  bool found_check = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
  // wholesale check of all dependencies
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
    if (deps.check_dependency() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
      found_check = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
      NOT_DEBUG(break);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
  return found_check;  // tell caller if we found anything
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
bool nmethod::check_dependency_on(DepChange& changes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
  // What has happened:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
  // 1) a new class dependee has been added
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
  // 2) dependee and all its super classes have been marked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
  bool found_check = false;  // set true if we are upset
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2033
    // Evaluate only relevant dependencies.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2034
    if (deps.spot_check_dependency_at(changes) != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
      found_check = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
      NOT_DEBUG(break);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
  return found_check;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2040
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2041
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2042
bool nmethod::is_evol_dependent_on(klassOop dependee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2043
  instanceKlass *dependee_ik = instanceKlass::cast(dependee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
  objArrayOop dependee_methods = dependee_ik->methods();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
    if (deps.type() == Dependencies::evol_method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
      methodOop method = deps.method_argument(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
      for (int j = 0; j < dependee_methods->length(); j++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
        if ((methodOop) dependee_methods->obj_at(j) == method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
          // RC_TRACE macro has an embedded ResourceMark
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
          RC_TRACE(0x01000000,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
            ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
            _method->method_holder()->klass_part()->external_name(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
            _method->name()->as_C_string(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
            _method->signature()->as_C_string(), compile_id(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2056
            method->method_holder()->klass_part()->external_name(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
            method->name()->as_C_string(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
            method->signature()->as_C_string()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
          if (TraceDependencies || LogCompilation)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
            deps.log_dependency(dependee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
          return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2065
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
// Called from mark_for_deoptimization, when dependee is invalidated.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
bool nmethod::is_dependent_on_method(methodOop dependee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
    if (deps.type() != Dependencies::evol_method)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
      continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
    methodOop method = deps.method_argument(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
    if (method == dependee) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
bool nmethod::is_patchable_at(address instr_addr) {
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2082
  assert(insts_contains(instr_addr), "wrong nmethod used");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
  if (is_zombie()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
    // a zombie may never be patched
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
address nmethod::continuation_for_implicit_exception(address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
  // Exception happened outside inline-cache check code => we are inside
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
  // an active nmethod => use cpc to determine a return address
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2094
  int exception_offset = pc - code_begin();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
  int cont_offset = ImplicitExceptionTable(this).at( exception_offset );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
  if (cont_offset == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
    Thread* thread = ThreadLocalStorage::get_thread_slow();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
    ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
    HandleMark hm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
    ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
    CodeBlob* cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
    assert(cb != NULL && cb == this, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
    tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
    print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
    method()->print_codes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
    print_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
    print_pcs();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
#endif
4891
7c8755dd5bb2 6920293: OptimizeStringConcat causing core dumps
never
parents: 4754
diff changeset
  2111
  if (cont_offset == 0) {
7c8755dd5bb2 6920293: OptimizeStringConcat causing core dumps
never
parents: 4754
diff changeset
  2112
    // Let the normal error handling report the exception
7c8755dd5bb2 6920293: OptimizeStringConcat causing core dumps
never
parents: 4754
diff changeset
  2113
    return NULL;
7c8755dd5bb2 6920293: OptimizeStringConcat causing core dumps
never
parents: 4754
diff changeset
  2114
  }
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2115
  return code_begin() + cont_offset;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
void nmethod_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
  // make sure you didn't forget to adjust the filler fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
  assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
//-------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
// QQQ might we make this work from a frame??
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
nmethodLocker::nmethodLocker(address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
  CodeBlob* cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
  guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
  _nm = (nmethod*)cb;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
  lock_nmethod(_nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2136
8661
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  2137
// Only JvmtiDeferredEvent::compiled_method_unload_event()
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  2138
// should pass zombie_ok == true.
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  2139
void nmethodLocker::lock_nmethod(nmethod* nm, bool zombie_ok) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
  if (nm == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
  Atomic::inc(&nm->_lock_count);
8661
3dc8a18ac563 7024970: 2/3 assert(ServiceThread::is_service_thread(Thread::current())) failed: Service thread must post enqueue
dcubed
parents: 8495
diff changeset
  2142
  guarantee(zombie_ok || !nm->is_zombie(), "cannot lock a zombie method");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
void nmethodLocker::unlock_nmethod(nmethod* nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
  if (nm == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
  Atomic::dec(&nm->_lock_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
  guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2150
4752
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2151
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2152
// -----------------------------------------------------------------------------
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2153
// nmethod::get_deopt_original_pc
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2154
//
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2155
// Return the original PC for the given PC if:
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2156
// (a) the given PC belongs to a nmethod and
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2157
// (b) it is a deopt PC
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2158
address nmethod::get_deopt_original_pc(const frame* fr) {
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2159
  if (fr->cb() == NULL)  return NULL;
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2160
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2161
  nmethod* nm = fr->cb()->as_nmethod_or_null();
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2162
  if (nm != NULL && nm->is_deopt_pc(fr->pc()))
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2163
    return nm->get_original_pc(fr);
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2164
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2165
  return NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2167
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2169
// -----------------------------------------------------------------------------
4564
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2170
// MethodHandle
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2171
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2172
bool nmethod::is_method_handle_return(address return_pc) {
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2173
  if (!has_method_handle_invokes())  return false;
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2174
  PcDesc* pd = pc_desc_at(return_pc);
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2175
  if (pd == NULL)
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2176
    return false;
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2177
  return pd->is_method_handle_invoke();
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2178
}
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2179
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2180
55dfb20908d0 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 4479
diff changeset
  2181
// -----------------------------------------------------------------------------
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
// Verification
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2184
class VerifyOopsClosure: public OopClosure {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2185
  nmethod* _nm;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2186
  bool     _ok;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2187
public:
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2188
  VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2189
  bool ok() { return _ok; }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2190
  virtual void do_oop(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2191
    if ((*p) == NULL || (*p)->is_oop())  return;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2192
    if (_ok) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2193
      _nm->print_nmethod(true);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2194
      _ok = false;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2195
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2196
    tty->print_cr("*** non-oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)",
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2197
                  (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2198
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2199
  virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2200
};
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2201
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
void nmethod::verify() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
  // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
  // seems odd.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
  if( is_zombie() || is_not_entrant() )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
  // Make sure all the entry points are correctly aligned for patching.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
  NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
  assert(method()->is_oop(), "must be valid");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
  if (!CodeCache::contains(this)) {
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5402
diff changeset
  2218
    fatal(err_msg("nmethod at " INTPTR_FORMAT " not in zone", this));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
  if(is_native_method() )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
  nmethod* nm = CodeCache::find_nmethod(verified_entry_point());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
  if (nm != this) {
5403
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5402
diff changeset
  2226
    fatal(err_msg("findNMethod did not find this nmethod (" INTPTR_FORMAT ")",
6b0dd9c75dde 6888954: argument formatting for assert() and friends
jcoomes
parents: 5402
diff changeset
  2227
                  this));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
  for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
    if (! p->verify(this)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
      tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2236
  VerifyOopsClosure voc(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2237
  oops_do(&voc);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2238
  assert(voc.ok(), "embedded oops must be OK");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2239
  verify_scavenge_root_oops();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2240
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
  verify_scopes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
void nmethod::verify_interrupt_point(address call_site) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
  // This code does not work in release mode since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
  // owns_lock only is available in debug mode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
  CompiledIC* ic = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
  Thread *cur = Thread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
  if (CompiledIC_lock->owner() == cur ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
      ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
       SafepointSynchronize::is_at_safepoint())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
    ic = CompiledIC_at(call_site);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
    CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
    MutexLocker ml_verify (CompiledIC_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
    ic = CompiledIC_at(call_site);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
  PcDesc* pd = pc_desc_at(ic->end_of_call());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2260
  assert(pd != NULL, "PcDesc must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2261
  for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(),
4894
8a76fd3d098d 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 4891
diff changeset
  2262
                                     pd->obj_decode_offset(), pd->should_reexecute(),
8a76fd3d098d 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 4891
diff changeset
  2263
                                     pd->return_oop());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
       !sd->is_top(); sd = sd->sender()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
    sd->verify();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
void nmethod::verify_scopes() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
  if( !method() ) return;       // Runtime stubs have no scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
  if (method()->is_native()) return; // Ignore stub methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
  // iterate through all interrupt point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
  // and verify the debug information is valid.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
  RelocIterator iter((nmethod*)this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
    address stub = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
    switch (iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
      case relocInfo::virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
        verify_interrupt_point(iter.addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
      case relocInfo::opt_virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
        stub = iter.opt_virtual_call_reloc()->static_stub();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
        verify_interrupt_point(iter.addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2285
      case relocInfo::static_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
        stub = iter.static_call_reloc()->static_stub();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
        //verify_interrupt_point(iter.addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
      case relocInfo::runtime_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
        address destination = iter.reloc()->value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
        // Right now there is no way to find out which entries support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
        // an interrupt point.  It would be nice if we had this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
        // information in a table.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
    assert(stub == NULL || stub_contains(stub), "static call stub outside stub section");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
// -----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2302
// Non-product code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2303
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2305
class DebugScavengeRoot: public OopClosure {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2306
  nmethod* _nm;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2307
  bool     _ok;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2308
public:
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2309
  DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2310
  bool ok() { return _ok; }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2311
  virtual void do_oop(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2312
    if ((*p) == NULL || !(*p)->is_scavengable())  return;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2313
    if (_ok) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2314
      _nm->print_nmethod(true);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2315
      _ok = false;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2316
    }
9935
51267b5e1a3d 7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents: 8872
diff changeset
  2317
    tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)",
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2318
                  (intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2319
    (*p)->print();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2320
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2321
  virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2322
};
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2324
void nmethod::verify_scavenge_root_oops() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2325
  if (!on_scavenge_root_list()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2326
    // Actually look inside, to verify the claim that it's clean.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2327
    DebugScavengeRoot debug_scavenge_root(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2328
    oops_do(&debug_scavenge_root);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2329
    if (!debug_scavenge_root.ok())
9935
51267b5e1a3d 7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents: 8872
diff changeset
  2330
      fatal("found an unadvertised bad scavengable oop in the code cache");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
  }
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2332
  assert(scavenge_root_not_marked(), "");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2333
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2335
#endif // PRODUCT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2336
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2337
// Printing operations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2338
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2339
void nmethod::print() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2340
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2341
  ttyLocker ttyl;   // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2342
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  2343
  tty->print("Compiled method ");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2344
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2345
  if (is_compiled_by_c1()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2346
    tty->print("(c1) ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2347
  } else if (is_compiled_by_c2()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2348
    tty->print("(c2) ");
6187
4fa7845f7c14 6976186: integrate Shark HotSpot changes
twisti
parents: 6186
diff changeset
  2349
  } else if (is_compiled_by_shark()) {
4fa7845f7c14 6976186: integrate Shark HotSpot changes
twisti
parents: 6186
diff changeset
  2350
    tty->print("(shark) ");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2351
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2352
    tty->print("(nm) ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2353
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2354
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  2355
  print_on(tty, NULL);
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  2356
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2357
  if (WizardMode) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2358
    tty->print("((nmethod*) "INTPTR_FORMAT ") ", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2359
    tty->print(" for method " INTPTR_FORMAT , (address)method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2360
    tty->print(" { ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2361
    if (is_in_use())      tty->print("in_use ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2362
    if (is_not_entrant()) tty->print("not_entrant ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2363
    if (is_zombie())      tty->print("zombie ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2364
    if (is_unloaded())    tty->print("unloaded ");
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2365
    if (on_scavenge_root_list())  tty->print("scavenge_root ");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2366
    tty->print_cr("}:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2367
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2368
  if (size              () > 0) tty->print_cr(" total in heap  [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
                                              (address)this,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
                                              (address)this + size(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
                                              size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2372
  if (relocation_size   () > 0) tty->print_cr(" relocation     [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2373
                                              relocation_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2374
                                              relocation_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
                                              relocation_size());
6432
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
  2376
  if (consts_size       () > 0) tty->print_cr(" constants      [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
  2377
                                              consts_begin(),
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
  2378
                                              consts_end(),
d36e09b60939 6961697: move nmethod constants section before instruction section
twisti
parents: 6418
diff changeset
  2379
                                              consts_size());
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2380
  if (insts_size        () > 0) tty->print_cr(" main code      [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2381
                                              insts_begin(),
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2382
                                              insts_end(),
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2383
                                              insts_size());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
  if (stub_size         () > 0) tty->print_cr(" stub code      [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2385
                                              stub_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2386
                                              stub_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2387
                                              stub_size());
5686
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  2388
  if (oops_size         () > 0) tty->print_cr(" oops           [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  2389
                                              oops_begin(),
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  2390
                                              oops_end(),
5435e77aa3df 6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents: 5533
diff changeset
  2391
                                              oops_size());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
  if (scopes_data_size  () > 0) tty->print_cr(" scopes data    [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2393
                                              scopes_data_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2394
                                              scopes_data_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
                                              scopes_data_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2396
  if (scopes_pcs_size   () > 0) tty->print_cr(" scopes pcs     [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2397
                                              scopes_pcs_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2398
                                              scopes_pcs_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2399
                                              scopes_pcs_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2400
  if (dependencies_size () > 0) tty->print_cr(" dependencies   [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2401
                                              dependencies_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2402
                                              dependencies_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2403
                                              dependencies_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2404
  if (handler_table_size() > 0) tty->print_cr(" handler table  [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2405
                                              handler_table_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2406
                                              handler_table_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2407
                                              handler_table_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2408
  if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table  [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2409
                                              nul_chk_table_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2410
                                              nul_chk_table_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2411
                                              nul_chk_table_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2412
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2413
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2414
void nmethod::print_code() {
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2415
  HandleMark hm;
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2416
  ResourceMark m;
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2417
  Disassembler::decode(this);
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2418
}
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2419
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2420
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2421
#ifndef PRODUCT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2422
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2423
void nmethod::print_scopes() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2424
  // Find the first pc desc for all scopes in the code and print it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2425
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2426
  for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2427
    if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2428
      continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2429
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2430
    ScopeDesc* sd = scope_desc_at(p->real_pc(this));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2431
    sd->print_on(tty, p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2432
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2433
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2434
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2435
void nmethod::print_dependencies() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2436
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2437
  ttyLocker ttyl;   // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2438
  tty->print_cr("Dependencies:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2439
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2440
    deps.print_dependency();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2441
    klassOop ctxk = deps.context_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2442
    if (ctxk != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2443
      Klass* k = Klass::cast(ctxk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2444
      if (k->oop_is_instance() && ((instanceKlass*)k)->is_dependent_nmethod(this)) {
203
2e348cc9121a 6610906: inexplicable IncompatibleClassChangeError
jrose
parents: 1
diff changeset
  2445
        tty->print_cr("   [nmethod<=klass]%s", k->external_name());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2446
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2447
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2448
    deps.log_dependency();  // put it into the xml log also
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2449
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2450
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2451
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2452
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2453
void nmethod::print_relocations() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2454
  ResourceMark m;       // in case methods get printed via the debugger
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2455
  tty->print_cr("relocations:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2456
  RelocIterator iter(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2457
  iter.print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2458
  if (UseRelocIndex) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2459
    jint* index_end   = (jint*)relocation_end() - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2460
    jint  index_size  = *index_end;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2461
    jint* index_start = (jint*)( (address)index_end - index_size );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2462
    tty->print_cr("    index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2463
    if (index_size > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2464
      jint* ip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2465
      for (ip = index_start; ip+2 <= index_end; ip += 2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2466
        tty->print_cr("  (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2467
                      ip[0],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2468
                      ip[1],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2469
                      header_end()+ip[0],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2470
                      relocation_begin()-1+ip[1]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2471
      for (; ip < index_end; ip++)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2472
        tty->print_cr("  (%d ?)", ip[0]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2473
      tty->print_cr("          @" INTPTR_FORMAT ": index_size=%d", ip, *ip++);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2474
      tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2475
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2476
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2477
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2478
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2479
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2480
void nmethod::print_pcs() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2481
  ResourceMark m;       // in case methods get printed via debugger
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2482
  tty->print_cr("pc-bytecode offsets:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2483
  for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2484
    p->print(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2485
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2486
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2487
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2488
#endif // PRODUCT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2489
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2490
const char* nmethod::reloc_string_for(u_char* begin, u_char* end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2491
  RelocIterator iter(this, begin, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2492
  bool have_one = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2493
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2494
    have_one = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2495
    switch (iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2496
        case relocInfo::none:                  return "no_reloc";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2497
        case relocInfo::oop_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2498
          stringStream st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2499
          oop_Relocation* r = iter.oop_reloc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2500
          oop obj = r->oop_value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2501
          st.print("oop(");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2502
          if (obj == NULL) st.print("NULL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2503
          else obj->print_value_on(&st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2504
          st.print(")");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2505
          return st.as_string();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2506
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2507
        case relocInfo::virtual_call_type:     return "virtual_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2508
        case relocInfo::opt_virtual_call_type: return "optimized virtual_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2509
        case relocInfo::static_call_type:      return "static_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2510
        case relocInfo::static_stub_type:      return "static_stub";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2511
        case relocInfo::runtime_call_type:     return "runtime_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2512
        case relocInfo::external_word_type:    return "external_word";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2513
        case relocInfo::internal_word_type:    return "internal_word";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2514
        case relocInfo::section_word_type:     return "section_word";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2515
        case relocInfo::poll_type:             return "poll";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2516
        case relocInfo::poll_return_type:      return "poll_return";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2517
        case relocInfo::type_mask:             return "type_bit_mask";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2518
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2519
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2520
  return have_one ? "other" : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2521
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2522
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2523
// Return a the last scope in (begin..end]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2524
ScopeDesc* nmethod::scope_desc_in(address begin, address end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2525
  PcDesc* p = pc_desc_near(begin+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2526
  if (p != NULL && p->real_pc(this) <= end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2527
    return new ScopeDesc(this, p->scope_decode_offset(),
4894
8a76fd3d098d 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 4891
diff changeset
  2528
                         p->obj_decode_offset(), p->should_reexecute(),
8a76fd3d098d 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 4891
diff changeset
  2529
                         p->return_oop());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2530
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2531
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2532
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2533
4584
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2534
void nmethod::print_nmethod_labels(outputStream* stream, address block_begin) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2535
  if (block_begin == entry_point())             stream->print_cr("[Entry Point]");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2536
  if (block_begin == verified_entry_point())    stream->print_cr("[Verified Entry Point]");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2537
  if (block_begin == exception_begin())         stream->print_cr("[Exception Handler]");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2538
  if (block_begin == stub_begin())              stream->print_cr("[Stub Code]");
4752
67a506670cd0 6921352: JSR 292 needs its own deopt handler
twisti
parents: 4750
diff changeset
  2539
  if (block_begin == deopt_handler_begin())     stream->print_cr("[Deopt Handler Code]");
6186
7eef4cda471c 6975855: don't emit deopt MH handler in C1 if not required
twisti
parents: 5924
diff changeset
  2540
7eef4cda471c 6975855: don't emit deopt MH handler in C1 if not required
twisti
parents: 5924
diff changeset
  2541
  if (has_method_handle_invokes())
7eef4cda471c 6975855: don't emit deopt MH handler in C1 if not required
twisti
parents: 5924
diff changeset
  2542
    if (block_begin == deopt_mh_handler_begin())  stream->print_cr("[Deopt MH Handler Code]");
7eef4cda471c 6975855: don't emit deopt MH handler in C1 if not required
twisti
parents: 5924
diff changeset
  2543
4584
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2544
  if (block_begin == consts_begin())            stream->print_cr("[Constants]");
6186
7eef4cda471c 6975855: don't emit deopt MH handler in C1 if not required
twisti
parents: 5924
diff changeset
  2545
4584
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2546
  if (block_begin == entry_point()) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2547
    methodHandle m = method();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2548
    if (m.not_null()) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2549
      stream->print("  # ");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2550
      m->print_value_on(stream);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2551
      stream->cr();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2552
    }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2553
    if (m.not_null() && !is_osr_method()) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2554
      ResourceMark rm;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2555
      int sizeargs = m->size_of_parameters();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2556
      BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, sizeargs);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2557
      VMRegPair* regs   = NEW_RESOURCE_ARRAY(VMRegPair, sizeargs);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2558
      {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2559
        int sig_index = 0;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2560
        if (!m->is_static())
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2561
          sig_bt[sig_index++] = T_OBJECT; // 'this'
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2562
        for (SignatureStream ss(m->signature()); !ss.at_return_type(); ss.next()) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2563
          BasicType t = ss.type();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2564
          sig_bt[sig_index++] = t;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2565
          if (type2size[t] == 2) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2566
            sig_bt[sig_index++] = T_VOID;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2567
          } else {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2568
            assert(type2size[t] == 1, "size is 1 or 2");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2569
          }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2570
        }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2571
        assert(sig_index == sizeargs, "");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2572
      }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2573
      const char* spname = "sp"; // make arch-specific?
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2574
      intptr_t out_preserve = SharedRuntime::java_calling_convention(sig_bt, regs, sizeargs, false);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2575
      int stack_slot_offset = this->frame_size() * wordSize;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2576
      int tab1 = 14, tab2 = 24;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2577
      int sig_index = 0;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2578
      int arg_index = (m->is_static() ? 0 : -1);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2579
      bool did_old_sp = false;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2580
      for (SignatureStream ss(m->signature()); !ss.at_return_type(); ) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2581
        bool at_this = (arg_index == -1);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2582
        bool at_old_sp = false;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2583
        BasicType t = (at_this ? T_OBJECT : ss.type());
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2584
        assert(t == sig_bt[sig_index], "sigs in sync");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2585
        if (at_this)
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2586
          stream->print("  # this: ");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2587
        else
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2588
          stream->print("  # parm%d: ", arg_index);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2589
        stream->move_to(tab1);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2590
        VMReg fst = regs[sig_index].first();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2591
        VMReg snd = regs[sig_index].second();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2592
        if (fst->is_reg()) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2593
          stream->print("%s", fst->name());
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2594
          if (snd->is_valid())  {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2595
            stream->print(":%s", snd->name());
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2596
          }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2597
        } else if (fst->is_stack()) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2598
          int offset = fst->reg2stack() * VMRegImpl::stack_slot_size + stack_slot_offset;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2599
          if (offset == stack_slot_offset)  at_old_sp = true;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2600
          stream->print("[%s+0x%x]", spname, offset);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2601
        } else {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2602
          stream->print("reg%d:%d??", (int)(intptr_t)fst, (int)(intptr_t)snd);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2603
        }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2604
        stream->print(" ");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2605
        stream->move_to(tab2);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2606
        stream->print("= ");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2607
        if (at_this) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2608
          m->method_holder()->print_value_on(stream);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2609
        } else {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2610
          bool did_name = false;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2611
          if (!at_this && ss.is_object()) {
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7913
diff changeset
  2612
            Symbol* name = ss.as_symbol_or_null();
4584
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2613
            if (name != NULL) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2614
              name->print_value_on(stream);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2615
              did_name = true;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2616
            }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2617
          }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2618
          if (!did_name)
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2619
            stream->print("%s", type2name(t));
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2620
        }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2621
        if (at_old_sp) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2622
          stream->print("  (%s of caller)", spname);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2623
          did_old_sp = true;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2624
        }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2625
        stream->cr();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2626
        sig_index += type2size[t];
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2627
        arg_index += 1;
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2628
        if (!at_this)  ss.next();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2629
      }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2630
      if (!did_old_sp) {
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2631
        stream->print("  # ");
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2632
        stream->move_to(tab1);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2633
        stream->print("[%s+0x%x]", spname, stack_slot_offset);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2634
        stream->print("  (%s of caller)", spname);
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2635
        stream->cr();
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2636
      }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2637
    }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2638
  }
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2639
}
e2a449e8cc6f 6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents: 4570
diff changeset
  2640
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2641
void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2642
  // First, find an oopmap in (begin, end].
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2643
  // We use the odd half-closed interval so that oop maps and scope descs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2644
  // which are tied to the byte after a call are printed with the call itself.
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2645
  address base = code_begin();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2646
  OopMapSet* oms = oop_maps();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2647
  if (oms != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2648
    for (int i = 0, imax = oms->size(); i < imax; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2649
      OopMap* om = oms->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2650
      address pc = base + om->offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2651
      if (pc > begin) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2652
        if (pc <= end) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2653
          st->move_to(column);
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2654
          st->print("; ");
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2655
          om->print_on(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2656
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2657
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2658
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2659
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2660
  }
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2661
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2662
  // Print any debug info present at this pc.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2663
  ScopeDesc* sd  = scope_desc_in(begin, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2664
  if (sd != NULL) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2665
    st->move_to(column);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2666
    if (sd->bci() == SynchronizationEntryBCI) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2667
      st->print(";*synchronization entry");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2668
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2669
      if (sd->method().is_null()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2670
        st->print("method is NULL");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2671
      } else if (sd->method()->is_native()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2672
        st->print("method is native");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2673
      } else {
7913
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  2674
        Bytecodes::Code bc = sd->method()->java_code_at(sd->bci());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2675
        st->print(";*%s", Bytecodes::name(bc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2676
        switch (bc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2677
        case Bytecodes::_invokevirtual:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2678
        case Bytecodes::_invokespecial:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2679
        case Bytecodes::_invokestatic:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2680
        case Bytecodes::_invokeinterface:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2681
          {
7913
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  2682
            Bytecode_invoke invoke(sd->method(), sd->bci());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2683
            st->print(" ");
7913
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  2684
            if (invoke.name() != NULL)
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  2685
              invoke.name()->print_symbol_on(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2686
            else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2687
              st->print("<UNKNOWN>");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2688
            break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2689
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2690
        case Bytecodes::_getfield:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2691
        case Bytecodes::_putfield:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2692
        case Bytecodes::_getstatic:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2693
        case Bytecodes::_putstatic:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2694
          {
7913
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  2695
            Bytecode_field field(sd->method(), sd->bci());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2696
            st->print(" ");
7913
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  2697
            if (field.name() != NULL)
dd096a83bdbb 4926272: methodOopDesc::method_from_bcp is unsafe
never
parents: 7718
diff changeset
  2698
              field.name()->print_symbol_on(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2699
            else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2700
              st->print("<UNKNOWN>");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2701
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2702
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2703
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2704
    }
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2705
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2706
    // Print all scopes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2707
    for (;sd != NULL; sd = sd->sender()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2708
      st->move_to(column);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2709
      st->print("; -");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2710
      if (sd->method().is_null()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2711
        st->print("method is NULL");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2712
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2713
        sd->method()->print_short_name(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2714
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2715
      int lineno = sd->method()->line_number_from_bci(sd->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2716
      if (lineno != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2717
        st->print("@%d (line %d)", sd->bci(), lineno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2718
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2719
        st->print("@%d", sd->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2720
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2721
      st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2722
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2723
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2724
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2725
  // Print relocation information
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2726
  const char* str = reloc_string_for(begin, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2727
  if (str != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2728
    if (sd != NULL) st->cr();
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2729
    st->move_to(column);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2730
    st->print(";   {%s}", str);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2731
  }
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2732
  int cont_offset = ImplicitExceptionTable(this).at(begin - code_begin());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2733
  if (cont_offset != 0) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2734
    st->move_to(column);
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2735
    st->print("; implicit exception: dispatches to " INTPTR_FORMAT, code_begin() + cont_offset);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2736
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2737
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2738
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2739
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2740
#ifndef PRODUCT
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2741
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2742
void nmethod::print_value_on(outputStream* st) const {
8872
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  2743
  st->print("nmethod");
36680c58660e 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 8725
diff changeset
  2744
  print_on(st, NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2745
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2746
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2747
void nmethod::print_calls(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2748
  RelocIterator iter(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2749
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2750
    switch (iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2751
    case relocInfo::virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2752
    case relocInfo::opt_virtual_call_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2753
      VerifyMutexLocker mc(CompiledIC_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2754
      CompiledIC_at(iter.reloc())->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2755
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2756
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2757
    case relocInfo::static_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2758
      st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2759
      compiledStaticCall_at(iter.reloc())->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2760
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2761
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2762
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2763
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2764
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2765
void nmethod::print_handler_table() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2766
  ExceptionHandlerTable(this).print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2767
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2768
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2769
void nmethod::print_nul_chk_table() {
6418
6671edbd230e 6978355: renaming for 6961697
twisti
parents: 6268
diff changeset
  2770
  ImplicitExceptionTable(this).print(code_begin());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2771
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2772
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2773
void nmethod::print_statistics() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2774
  ttyLocker ttyl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2775
  if (xtty != NULL)  xtty->head("statistics type='nmethod'");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2776
  nmethod_stats.print_native_nmethod_stats();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2777
  nmethod_stats.print_nmethod_stats();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2778
  DebugInformationRecorder::print_statistics();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2779
  nmethod_stats.print_pc_stats();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2780
  Dependencies::print_statistics();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2781
  if (xtty != NULL)  xtty->tail("statistics");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2782
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2783
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2784
#endif // PRODUCT