hotspot/src/share/vm/code/nmethod.cpp
author jrose
Wed, 23 Sep 2009 23:57:44 -0700
changeset 3913 e049e6b81e11
parent 3912 3aaaaad1ccb0
child 4479 5686407cde7a
permissions -rw-r--r--
6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods Summary: After mechanically merging changes, some by-hand adjustments are needed. Reviewed-by: ysr
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/*
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69c1b5228547 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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 * Copyright 1997-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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# include "incls/_precompiled.incl"
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# include "incls/_nmethod.cpp.incl"
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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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      symbolOop klass_name = m->klass_name();                             \
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      symbolOop name = m->name();                                         \
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      symbolOop 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 (is_native_method()) return false;
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  assert(compiler() != NULL, "must be");
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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 (is_native_method()) return false;
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  assert(compiler() != NULL, "must be");
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  return compiler()->is_c2();
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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 code_size;
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  int stub_size;
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  int consts_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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    code_size           += nm->code_size();
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    stub_size           += nm->stub_size();
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    consts_size         += nm->consts_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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    oops_size += nm->oops_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 (code_size != 0)           tty->print_cr(" main code      = %d", code_size);
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    if (stub_size != 0)           tty->print_cr(" stub code      = %d", stub_size);
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    if (consts_size != 0)         tty->print_cr(" constants      = %d", consts_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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    if (oops_size != 0)           tty->print_cr(" oops           = %d", oops_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_code_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_code_size        += nm->code_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_code_size != 0)        tty->print_cr(" N. main code   = %d", native_code_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 _last_pc_desc 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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// The _unwind_handler is a special marker address, which says that
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// for given exception oop and address, the frame should be removed
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// as the tuple cannot be caught in the nmethod
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address ExceptionCache::_unwind_handler = (address) -1;
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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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    _last_pc_desc = NULL;  // native method
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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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  _last_pc_desc = initial_pc_desc + 1;  // first valid one is after 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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  // 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 returned value.
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  res = _last_pc_desc;
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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 LRU cache.
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  for (int i = 0; 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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      _last_pc_desc = res;  // record this cache hit in case of repeat
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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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  // Note:  Do not update _last_pc_desc.  It fronts for the LRU cache.
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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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void nmethod::remove_from_exception_cache(ExceptionCache* ec) {
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  ExceptionCache* prev = NULL;
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  ExceptionCache* curr = exception_cache();
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  assert(curr != NULL, "nothing to remove");
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  // find the previous and next entry of ec
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  while (curr != ec) {
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    prev = curr;
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    curr = curr->next();
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    assert(curr != NULL, "ExceptionCache not found");
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  }
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  // now: curr == ec
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  ExceptionCache* next = curr->next();
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  if (prev == NULL) {
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    set_exception_cache(next);
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  } else {
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    prev->set_next(next);
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  }
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  delete curr;
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}
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// public method for accessing the exception cache
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// These are the public access methods.
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address nmethod::handler_for_exception_and_pc(Handle exception, address pc) {
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  // We never grab a lock to read the exception cache, so we may
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  // have false negatives. This is okay, as it can only happen during
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  // the first few exception lookups for a given nmethod.
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  ExceptionCache* ec = exception_cache();
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  while (ec != NULL) {
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    address ret_val;
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    if ((ret_val = ec->match(exception,pc)) != NULL) {
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      return ret_val;
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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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void nmethod::add_handler_for_exception_and_pc(Handle exception, address pc, address handler) {
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  // There are potential race conditions during exception cache updates, so we
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  // must own the ExceptionCache_lock before doing ANY modifications. Because
2131
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  // we don't lock during reads, it is possible to have several threads attempt
1
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  // to update the cache with the same data. We need to check for already inserted
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  // copies of the current data before adding it.
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  MutexLocker ml(ExceptionCache_lock);
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  ExceptionCache* target_entry = exception_cache_entry_for_exception(exception);
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  if (target_entry == NULL || !target_entry->add_address_and_handler(pc,handler)) {
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   391
    target_entry = new ExceptionCache(exception,pc,handler);
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    add_exception_cache_entry(target_entry);
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  }
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}
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diff changeset
   395
489c9b5090e2 Initial load
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parents:
diff changeset
   396
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
//-------------end of code for ExceptionCache--------------
489c9b5090e2 Initial load
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parents:
diff changeset
   398
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
void nmFlags::clear() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
  assert(sizeof(nmFlags) == sizeof(int), "using more than one word for nmFlags");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  *(jint*)this = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
int nmethod::total_size() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  return
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
    code_size()          +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
    stub_size()          +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
    consts_size()        +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
    scopes_data_size()   +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
    scopes_pcs_size()    +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
    handler_table_size() +
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
    nul_chk_table_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
const char* nmethod::compile_kind() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
  if (method() == NULL)    return "unloaded";
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  if (is_native_method())  return "c2n";
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
  if (is_osr_method())     return "osr";
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
// %%% This variable is no longer used?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
int nmethod::_zombie_instruction_size = NativeJump::instruction_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
nmethod* nmethod::new_native_nmethod(methodHandle method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
  CodeBuffer *code_buffer,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
  int vep_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
  int frame_complete,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
  int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
  ByteSize basic_lock_owner_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
  ByteSize basic_lock_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
  OopMapSet* oop_maps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  // create nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  nmethod* nm = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
    MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
    int native_nmethod_size = allocation_size(code_buffer, sizeof(nmethod));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
    CodeOffsets offsets;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
    offsets.set_value(CodeOffsets::Verified_Entry, vep_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
    offsets.set_value(CodeOffsets::Frame_Complete, frame_complete);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
    nm = new (native_nmethod_size)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
      nmethod(method(), native_nmethod_size, &offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
              code_buffer, frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
              basic_lock_owner_sp_offset, basic_lock_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
              oop_maps);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
    NOT_PRODUCT(if (nm != NULL)  nmethod_stats.note_native_nmethod(nm));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
    if (PrintAssembly && nm != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
      Disassembler::decode(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
  // verify nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
  debug_only(if (nm) nm->verify();) // might block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
  if (nm != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
    nm->log_new_nmethod();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
  return nm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   462
#ifdef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   463
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
   464
                                     CodeBuffer *code_buffer,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   465
                                     int vep_offset,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   466
                                     int trap_offset,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   467
                                     int frame_complete,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   468
                                     int frame_size) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   469
  // create nmethod
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   470
  nmethod* nm = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   471
  {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   472
    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
   473
    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
   474
    CodeOffsets offsets;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   475
    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
   476
    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
   477
    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
   478
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   479
    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
   480
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   481
    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
   482
    if (PrintAssembly && nm != NULL)
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   483
      Disassembler::decode(nm);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   484
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   485
  // verify nmethod
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   486
  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
   487
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   488
  if (nm != NULL) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   489
    nm->log_new_nmethod();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   490
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   491
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   492
  return nm;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   493
}
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   494
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   495
#endif // def HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   496
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
nmethod* nmethod::new_nmethod(methodHandle method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
  int compile_id,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  int entry_bci,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
  CodeOffsets* offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  int orig_pc_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  DebugInformationRecorder* debug_info,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  Dependencies* dependencies,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  CodeBuffer* code_buffer, int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
  OopMapSet* oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
  ExceptionHandlerTable* handler_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
  ImplicitExceptionTable* nul_chk_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
  AbstractCompiler* compiler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
  int comp_level
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
  assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
  // create nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
  nmethod* nm = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
  { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
    int nmethod_size =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
      allocation_size(code_buffer, sizeof(nmethod))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
      + adjust_pcs_size(debug_info->pcs_size())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
      + round_to(dependencies->size_in_bytes() , oopSize)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
      + round_to(handler_table->size_in_bytes(), oopSize)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
      + round_to(nul_chk_table->size_in_bytes(), oopSize)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
      + round_to(debug_info->data_size()       , oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
    nm = new (nmethod_size)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
      nmethod(method(), nmethod_size, compile_id, entry_bci, offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
              orig_pc_offset, debug_info, dependencies, code_buffer, frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
              oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
              handler_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
              nul_chk_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
              compiler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
              comp_level);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
    if (nm != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
      // To make dependency checking during class loading fast, record
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
      // the nmethod dependencies in the classes it is dependent on.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
      // This allows the dependency checking code to simply walk the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
      // class hierarchy above the loaded class, checking only nmethods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
      // which are dependent on those classes.  The slow way is to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
      // check every nmethod for dependencies which makes it linear in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
      // the number of methods compiled.  For applications with a lot
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
      // classes the slow way is too slow.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
      for (Dependencies::DepStream deps(nm); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
        klassOop klass = deps.context_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
        if (klass == NULL)  continue;  // ignore things like evol_method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
        // record this nmethod as dependent on this klass
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
        instanceKlass::cast(klass)->add_dependent_nmethod(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
    NOT_PRODUCT(if (nm != NULL)  nmethod_stats.note_nmethod(nm));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
    if (PrintAssembly && nm != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
      Disassembler::decode(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  // verify nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
  debug_only(if (nm) nm->verify();) // might block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
  if (nm != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
    nm->log_new_nmethod();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  // done
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  return nm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
// For native wrappers
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
nmethod::nmethod(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
  methodOop method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
  int nmethod_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
  CodeOffsets* offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
  CodeBuffer* code_buffer,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  ByteSize basic_lock_owner_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
  ByteSize basic_lock_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
  OopMapSet* oop_maps )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
  : CodeBlob("native nmethod", code_buffer, sizeof(nmethod),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
             nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  _compiled_synchronized_native_basic_lock_owner_sp_offset(basic_lock_owner_sp_offset),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
  _compiled_synchronized_native_basic_lock_sp_offset(basic_lock_sp_offset)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
    debug_only(No_Safepoint_Verifier nsv;)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
    assert_locked_or_safepoint(CodeCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   584
    NOT_PRODUCT(_has_debug_info = false);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   585
    _oops_do_mark_link       = NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
    _method                  = method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
    _entry_bci               = InvocationEntryBci;
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   588
    _osr_link                = NULL;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   589
    _scavenge_root_link      = NULL;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   590
    _scavenge_root_state     = 0;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
    _compiler                = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
    // We have no exception handler or deopt handler make the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
    // values something that will never match a pc like the nmethod vtable entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
    _exception_offset        = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
    _deoptimize_offset       = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
    _orig_pc_offset          = 0;
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   597
#ifdef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   598
    _trap_offset             = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   599
#endif // def HAVE_DTRACE_H
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
    _stub_offset             = data_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
    _consts_offset           = data_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
    _scopes_data_offset      = data_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
    _scopes_pcs_offset       = _scopes_data_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
    _dependencies_offset     = _scopes_pcs_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
    _handler_table_offset    = _dependencies_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
    _nul_chk_table_offset    = _handler_table_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
    _nmethod_end_offset      = _nul_chk_table_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
    _compile_id              = 0;  // default
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
    _comp_level              = CompLevel_none;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
    _entry_point             = instructions_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
    _verified_entry_point    = instructions_begin() + offsets->value(CodeOffsets::Verified_Entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
    _osr_entry_point         = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
    _exception_cache         = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
    _pc_desc_cache.reset_to(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
    flags.clear();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
    flags.state              = alive;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
    _markedForDeoptimization = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
    _lock_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    _stack_traversal_mark    = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
    code_buffer->copy_oops_to(this);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   624
    debug_only(verify_scavenge_root_oops());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
    CodeCache::commit(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
    VTune::create_nmethod(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
  if (PrintNativeNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
    ttyLocker ttyl;  // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
    // This output goes directly to the tty, not the compiler log.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
    // To enable tools to match it up with the compilation activity,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
    // be sure to tag this tty output with the compile ID.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
    if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
      xtty->begin_head("print_native_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
      xtty->method(_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
      xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
      xtty->end_head(" address='" INTPTR_FORMAT "'", (intptr_t) this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
    // print the header part first
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
    print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
    // then print the requested information
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
    if (PrintNativeNMethods) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
      print_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
      oop_maps->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
    if (PrintRelocations) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
      print_relocations();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
    if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
      xtty->tail("print_native_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
  Events::log("Create nmethod " INTPTR_FORMAT, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   657
// For dtrace wrappers
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   658
#ifdef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   659
nmethod::nmethod(
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   660
  methodOop method,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   661
  int nmethod_size,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   662
  CodeOffsets* offsets,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   663
  CodeBuffer* code_buffer,
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   664
  int frame_size)
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   665
  : 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
   666
             nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, NULL),
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   667
  _compiled_synchronized_native_basic_lock_owner_sp_offset(in_ByteSize(-1)),
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   668
  _compiled_synchronized_native_basic_lock_sp_offset(in_ByteSize(-1))
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   669
{
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   670
  {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   671
    debug_only(No_Safepoint_Verifier nsv;)
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   672
    assert_locked_or_safepoint(CodeCache_lock);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   673
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   674
    NOT_PRODUCT(_has_debug_info = false);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   675
    _oops_do_mark_link       = NULL;
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   676
    _method                  = method;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   677
    _entry_bci               = InvocationEntryBci;
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   678
    _osr_link                = NULL;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   679
    _scavenge_root_link      = NULL;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   680
    _scavenge_root_state     = 0;
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   681
    _compiler                = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   682
    // 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
   683
    // 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
   684
    _exception_offset        = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   685
    _deoptimize_offset       = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   686
    _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
   687
    _orig_pc_offset          = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   688
    _stub_offset             = data_offset();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   689
    _consts_offset           = data_offset();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   690
    _scopes_data_offset      = data_offset();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   691
    _scopes_pcs_offset       = _scopes_data_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   692
    _dependencies_offset     = _scopes_pcs_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   693
    _handler_table_offset    = _dependencies_offset;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   694
    _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
   695
    _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
   696
    _compile_id              = 0;  // default
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   697
    _comp_level              = CompLevel_none;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   698
    _entry_point             = instructions_begin();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   699
    _verified_entry_point    = instructions_begin() + offsets->value(CodeOffsets::Verified_Entry);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   700
    _osr_entry_point         = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   701
    _exception_cache         = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   702
    _pc_desc_cache.reset_to(NULL);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   703
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   704
    flags.clear();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   705
    flags.state              = alive;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   706
    _markedForDeoptimization = 0;
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
    _lock_count = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   709
    _stack_traversal_mark    = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   710
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   711
    code_buffer->copy_oops_to(this);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   712
    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
   713
    CodeCache::commit(this);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   714
    VTune::create_nmethod(this);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   715
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   716
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   717
  if (PrintNMethods || PrintDebugInfo || PrintRelocations || PrintDependencies) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   718
    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
   719
    // 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
   720
    // 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
   721
    // 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
   722
    if (xtty != NULL) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   723
      xtty->begin_head("print_dtrace_nmethod");
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   724
      xtty->method(_method);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   725
      xtty->stamp();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   726
      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
   727
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   728
    // print the header part first
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   729
    print();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   730
    // then print the requested information
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   731
    if (PrintNMethods) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   732
      print_code();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   733
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   734
    if (PrintRelocations) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   735
      print_relocations();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   736
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   737
    if (xtty != NULL) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   738
      xtty->tail("print_dtrace_nmethod");
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
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   741
  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
   742
}
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   743
#endif // def HAVE_DTRACE_H
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
void* nmethod::operator new(size_t size, int nmethod_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
  // Always leave some room in the CodeCache for I2C/C2I adapters
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
  return CodeCache::allocate(nmethod_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
nmethod::nmethod(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
  methodOop method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
  int nmethod_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
  int compile_id,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
  int entry_bci,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
  CodeOffsets* offsets,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
  int orig_pc_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
  DebugInformationRecorder* debug_info,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  Dependencies* dependencies,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
  CodeBuffer *code_buffer,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
  int frame_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
  OopMapSet* oop_maps,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
  ExceptionHandlerTable* handler_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
  ImplicitExceptionTable* nul_chk_table,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
  AbstractCompiler* compiler,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
  int comp_level
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
  )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
  : CodeBlob("nmethod", code_buffer, sizeof(nmethod),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
             nmethod_size, offsets->value(CodeOffsets::Frame_Complete), frame_size, oop_maps),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
  _compiled_synchronized_native_basic_lock_owner_sp_offset(in_ByteSize(-1)),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
  _compiled_synchronized_native_basic_lock_sp_offset(in_ByteSize(-1))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
  assert(debug_info->oop_recorder() == code_buffer->oop_recorder(), "shared OR");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
    debug_only(No_Safepoint_Verifier nsv;)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
    assert_locked_or_safepoint(CodeCache_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   779
    NOT_PRODUCT(_has_debug_info = false);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   780
    _oops_do_mark_link       = NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
    _method                  = method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
    _compile_id              = compile_id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
    _comp_level              = comp_level;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
    _entry_bci               = entry_bci;
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   785
    _osr_link                = NULL;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   786
    _scavenge_root_link      = NULL;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   787
    _scavenge_root_state     = 0;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
    _compiler                = compiler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
    _orig_pc_offset          = orig_pc_offset;
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   790
#ifdef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   791
    _trap_offset             = 0;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 347
diff changeset
   792
#endif // def HAVE_DTRACE_H
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
    _stub_offset             = instructions_offset() + code_buffer->total_offset_of(code_buffer->stubs()->start());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
    // Exception handler and deopt handler are in the stub section
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
    _exception_offset        = _stub_offset + offsets->value(CodeOffsets::Exceptions);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
    _deoptimize_offset       = _stub_offset + offsets->value(CodeOffsets::Deopt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
    _consts_offset           = instructions_offset() + code_buffer->total_offset_of(code_buffer->consts()->start());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
    _scopes_data_offset      = data_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
    _scopes_pcs_offset       = _scopes_data_offset   + round_to(debug_info->data_size         (), oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
    _dependencies_offset     = _scopes_pcs_offset    + adjust_pcs_size(debug_info->pcs_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
    _handler_table_offset    = _dependencies_offset  + round_to(dependencies->size_in_bytes (), oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
    _nul_chk_table_offset    = _handler_table_offset + round_to(handler_table->size_in_bytes(), oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
    _nmethod_end_offset      = _nul_chk_table_offset + round_to(nul_chk_table->size_in_bytes(), oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
    _entry_point             = instructions_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
    _verified_entry_point    = instructions_begin() + offsets->value(CodeOffsets::Verified_Entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
    _osr_entry_point         = instructions_begin() + offsets->value(CodeOffsets::OSR_Entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
    _exception_cache         = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
    _pc_desc_cache.reset_to(scopes_pcs_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
    flags.clear();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
    flags.state              = alive;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
    _markedForDeoptimization = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
    _unload_reported         = false;           // jvmti state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
    _lock_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
    _stack_traversal_mark    = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
    // Copy contents of ScopeDescRecorder to nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
    code_buffer->copy_oops_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
    debug_info->copy_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
    dependencies->copy_to(this);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   825
    if (ScavengeRootsInCode && detect_scavenge_root_oops()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   826
      CodeCache::add_scavenge_root_nmethod(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   827
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   828
    debug_only(verify_scavenge_root_oops());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
    CodeCache::commit(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
    VTune::create_nmethod(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
    // Copy contents of ExceptionHandlerTable to nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
    handler_table->copy_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
    nul_chk_table->copy_to(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
    // we use the information of entry points to find out if a method is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
    // static or non static
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
    assert(compiler->is_c2() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
           _method->is_static() == (entry_point() == _verified_entry_point),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
           " entry points must be same for static methods and vice versa");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
   845
  bool printnmethods = PrintNMethods
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
   846
    || CompilerOracle::should_print(_method)
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
   847
    || CompilerOracle::has_option_string(_method, "PrintNMethods");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
  if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
    print_nmethod(printnmethods);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
  // Note: Do not verify in here as the CodeCache_lock is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
  //       taken which would conflict with the CompiledIC_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
  //       which taken during the verification of call sites.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
  //       (was bug - gri 10/25/99)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
  Events::log("Create nmethod " INTPTR_FORMAT, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
// Print a short set of xml attributes to identify this nmethod.  The
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
// output should be embedded in some other element.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
void nmethod::log_identity(xmlStream* log) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
  log->print(" compile_id='%d'", compile_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
  const char* nm_kind = compile_kind();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
  if (nm_kind != NULL)  log->print(" compile_kind='%s'", nm_kind);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
  if (compiler() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
    log->print(" compiler='%s'", compiler()->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
#ifdef TIERED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
  log->print(" level='%d'", comp_level());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
#endif // TIERED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
#define LOG_OFFSET(log, name)                    \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
  if ((intptr_t)name##_end() - (intptr_t)name##_begin()) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
    log->print(" " XSTR(name) "_offset='%d'"    , \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
               (intptr_t)name##_begin() - (intptr_t)this)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
void nmethod::log_new_nmethod() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  if (LogCompilation && xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
    ttyLocker ttyl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
    HandleMark hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
    xtty->begin_elem("nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
    log_identity(xtty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
    xtty->print(" entry='" INTPTR_FORMAT "' size='%d'",
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
                instructions_begin(), size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
    xtty->print(" address='" INTPTR_FORMAT "'", (intptr_t) this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
    LOG_OFFSET(xtty, relocation);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
    LOG_OFFSET(xtty, code);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
    LOG_OFFSET(xtty, stub);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
    LOG_OFFSET(xtty, consts);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
    LOG_OFFSET(xtty, scopes_data);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
    LOG_OFFSET(xtty, scopes_pcs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
    LOG_OFFSET(xtty, dependencies);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
    LOG_OFFSET(xtty, handler_table);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
    LOG_OFFSET(xtty, nul_chk_table);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
    LOG_OFFSET(xtty, oops);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
    xtty->method(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
    xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
    xtty->end_elem();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
#undef LOG_OFFSET
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
// Print out more verbose output usually for a newly created nmethod.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
void nmethod::print_on(outputStream* st, const char* title) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
  if (st != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
    ttyLocker ttyl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
    // Print a little tag line that looks like +PrintCompilation output:
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   917
    int tlen = (int) strlen(title);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   918
    bool do_nl = false;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   919
    if (tlen > 0 && title[tlen-1] == '\n') { tlen--; do_nl = true; }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   920
    st->print("%3d%c  %.*s",
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
              compile_id(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
              is_osr_method() ? '%' :
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
              method() != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
              is_native_method() ? 'n' : ' ',
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   925
              tlen, title);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
#ifdef TIERED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
    st->print(" (%d) ", comp_level());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
#endif // TIERED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
    if (WizardMode) st->print(" (" INTPTR_FORMAT ")", this);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   930
    if (Universe::heap()->is_gc_active() && method() != NULL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   931
      st->print("(method)");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   932
    } else if (method() != NULL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   933
        method()->print_short_name(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
      if (is_osr_method())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
        st->print(" @ %d", osr_entry_bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
      if (method()->code_size() > 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
        st->print(" (%d bytes)", method()->code_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
    }
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   939
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
   940
    if (do_nl)  st->cr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
void nmethod::print_nmethod(bool printmethod) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
  ttyLocker ttyl;  // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
  if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
    xtty->begin_head("print_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
    xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
    xtty->end_head();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
  // print the header part first
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
  print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
  // then print the requested information
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
  if (printmethod) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
    print_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
    print_pcs();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
    oop_maps()->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
  if (PrintDebugInfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
    print_scopes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
  if (PrintRelocations) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
    print_relocations();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
  if (PrintDependencies) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
    print_dependencies();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
  if (PrintExceptionHandlers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
    print_handler_table();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
    print_nul_chk_table();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
  if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
    xtty->tail("print_nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
void nmethod::set_version(int v) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
  flags.version = v;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
ScopeDesc* nmethod::scope_desc_at(address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
  PcDesc* pd = pc_desc_at(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
  guarantee(pd != NULL, "scope must be present");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
  return new ScopeDesc(this, pd->scope_decode_offset(),
3686
69c1b5228547 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 2131
diff changeset
   988
                       pd->obj_decode_offset(), pd->should_reexecute());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
void nmethod::clear_inline_caches() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
  assert(SafepointSynchronize::is_at_safepoint(), "cleaning of IC's only allowed at safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
  if (is_zombie()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
  RelocIterator iter(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
    iter.reloc()->clear_inline_cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
void nmethod::cleanup_inline_caches() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
  assert(SafepointSynchronize::is_at_safepoint() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
        !CompiledIC_lock->is_locked() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
        !Patching_lock->is_locked(), "no threads must be updating the inline caches by them selfs");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
  // If the method is not entrant or zombie then a JMP is plastered over the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
  // first few bytes.  If an oop in the old code was there, that oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
  // should not get GC'd.  Skip the first few bytes of oops on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
  // not-entrant methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
  address low_boundary = verified_entry_point();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
  if (!is_in_use()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
    low_boundary += NativeJump::instruction_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
    // %%% Note:  On SPARC we patch only a 4-byte trap, not a full NativeJump.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
    // This means that the low_boundary is going to be a little too high.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
    // This shouldn't matter, since oops of non-entrant methods are never used.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
    // In fact, why are we bothering to look at oops in a non-entrant method??
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
  // Find all calls in an nmethod, and clear the ones that points to zombie methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
  RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
  while(iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
    switch(iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
      case relocInfo::virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
      case relocInfo::opt_virtual_call_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
        CompiledIC *ic = CompiledIC_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
        // Ok, to lookup references to zombies here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
        CodeBlob *cb = CodeCache::find_blob_unsafe(ic->ic_destination());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
        if( cb != NULL && cb->is_nmethod() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
          nmethod* nm = (nmethod*)cb;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
          // Clean inline caches pointing to both zombie and not_entrant methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
          if (!nm->is_in_use()) ic->set_to_clean();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
      case relocInfo::static_call_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
        CompiledStaticCall *csc = compiledStaticCall_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
        CodeBlob *cb = CodeCache::find_blob_unsafe(csc->destination());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
        if( cb != NULL && cb->is_nmethod() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
          nmethod* nm = (nmethod*)cb;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
          // Clean inline caches pointing to both zombie and not_entrant methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
          if (!nm->is_in_use()) csc->set_to_clean();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1055
// This is a private interface with the sweeper.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
void nmethod::mark_as_seen_on_stack() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
  assert(is_not_entrant(), "must be a non-entrant method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
  set_stack_traversal_mark(NMethodSweeper::traversal_count());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
// Tell if a non-entrant method can be converted to a zombie (i.e., there is no activations on the stack)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
bool nmethod::can_not_entrant_be_converted() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
  assert(is_not_entrant(), "must be a non-entrant method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
  assert(SafepointSynchronize::is_at_safepoint(), "must be called during a safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
  // Since the nmethod sweeper only does partial sweep the sweeper's traversal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
  // count can be greater than the stack traversal count before it hits the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
  // nmethod for the second time.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
  return stack_traversal_mark()+1 < NMethodSweeper::traversal_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
void nmethod::inc_decompile_count() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
  // Could be gated by ProfileTraps, but do not bother...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
  methodOop m = method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
  if (m == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
  methodDataOop mdo = m->method_data();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
  if (mdo == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
  // There is a benign race here.  See comments in methodDataOop.hpp.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
  mdo->inc_decompile_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
void nmethod::make_unloaded(BoolObjectClosure* is_alive, oop cause) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
  post_compiled_method_unload();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
  // Since this nmethod is being unloaded, make sure that dependencies
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
  // recorded in instanceKlasses get flushed and pass non-NULL closure to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
  // indicate that this work is being done during a GC.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
  assert(Universe::heap()->is_gc_active(), "should only be called during gc");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
  assert(is_alive != NULL, "Should be non-NULL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
  // A non-NULL is_alive closure indicates that this is being called during GC.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
  flush_dependencies(is_alive);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
  // Break cycle between nmethod & method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
  if (TraceClassUnloading && WizardMode) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
    tty->print_cr("[Class unloading: Making nmethod " INTPTR_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
                  " unloadable], methodOop(" INTPTR_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
                  "), cause(" INTPTR_FORMAT ")",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
                  this, (address)_method, (address)cause);
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1100
    if (!Universe::heap()->is_gc_active())
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1101
      cause->klass()->print();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
  }
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1103
  // Unlink the osr method, so we do not look this up again
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1104
  if (is_osr_method()) {
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1105
    invalidate_osr_method();
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1106
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
  // If _method is already NULL the methodOop is about to be unloaded,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
  // so we don't have to break the cycle. Note that it is possible to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
  // have the methodOop live here, in case we unload the nmethod because
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
  // it is pointing to some oop (other than the methodOop) being unloaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
  if (_method != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
    // OSR methods point to the methodOop, but the methodOop does not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
    // point back!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
    if (_method->code() == this) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
      _method->clear_code(); // Break a cycle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
    inc_decompile_count();     // Last chance to make a mark on the MDO
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
    _method = NULL;            // Clear the method of this dead nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
  // Make the class unloaded - i.e., change state and notify sweeper
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
  check_safepoint();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
  if (is_in_use()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
    // Transitioning directly from live to unloaded -- so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
    // we need to force a cache clean-up; remember this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
    // for later on.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
    CodeCache::set_needs_cache_clean(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
  flags.state = unloaded;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
  // The methodOop is gone at this point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
  assert(_method == NULL, "Tautology");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1133
  set_osr_link(NULL);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1134
  //set_scavenge_root_link(NULL); // done by prune_scavenge_root_nmethods
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
  NMethodSweeper::notify(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
void nmethod::invalidate_osr_method() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
  assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
  if (_entry_bci != InvalidOSREntryBci)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
    inc_decompile_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
  // Remove from list of active nmethods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
  if (method() != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
    instanceKlass::cast(method()->method_holder())->remove_osr_nmethod(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
  // Set entry as invalid
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
  _entry_bci = InvalidOSREntryBci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
void nmethod::log_state_change(int state) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
  if (LogCompilation) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
    if (xtty != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
      ttyLocker ttyl;  // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
      xtty->begin_elem("make_not_entrant %sthread='" UINTX_FORMAT "'",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
                       (state == zombie ? "zombie='1' " : ""),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
                       os::current_thread_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
      log_identity(xtty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
      xtty->stamp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
      xtty->end_elem();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
  if (PrintCompilation) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
    print_on(tty, state == zombie ? "made zombie " : "made not entrant ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
    tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
// Common functionality for both make_not_entrant and make_zombie
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
void nmethod::make_not_entrant_or_zombie(int state) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
  assert(state == zombie || state == not_entrant, "must be zombie or not_entrant");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
  // Code for an on-stack-replacement nmethod is removed when a class gets unloaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
  // They never become zombie/non-entrant, so the nmethod sweeper will never remove
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
  // them. Instead the entry_bci is set to InvalidOSREntryBci, so the osr nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
  // will never be used anymore. That the nmethods only gets removed when class unloading
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
  // happens, make life much simpler, since the nmethods are not just going to disappear
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
  // out of the blue.
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1177
  if (is_osr_method()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
    if (osr_entry_bci() != InvalidOSREntryBci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
      // only log this once
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
      log_state_change(state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
    invalidate_osr_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
  // If the method is already zombie or set to the state we want, nothing to do
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
  if (is_zombie() || (state == not_entrant && is_not_entrant())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
  log_state_change(state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
  // Make sure the nmethod is not flushed in case of a safepoint in code below.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
  nmethodLocker nml(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
    // Enter critical section.  Does not block for safepoint.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
    MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
    // The caller can be calling the method statically or through an inline
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
    // cache call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
    if (!is_not_entrant()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
      NativeJump::patch_verified_entry(entry_point(), verified_entry_point(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
                  SharedRuntime::get_handle_wrong_method_stub());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
      assert (NativeJump::instruction_size == nmethod::_zombie_instruction_size, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
    // When the nmethod becomes zombie it is no longer alive so the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
    // dependencies must be flushed.  nmethods in the not_entrant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
    // state will be flushed later when the transition to zombie
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
    // happens or they get unloaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
    if (state == zombie) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
      assert(SafepointSynchronize::is_at_safepoint(), "must be done at safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
      flush_dependencies(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
      assert(state == not_entrant, "other cases may need to be handled differently");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
    // Change state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
    flags.state = state;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
  } // leave critical region under Patching_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
  if (state == not_entrant) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
    Events::log("Make nmethod not entrant " INTPTR_FORMAT, this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
    Events::log("Make nmethod zombie " INTPTR_FORMAT, 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
  if (TraceCreateZombies) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
    tty->print_cr("nmethod <" INTPTR_FORMAT "> code made %s", this, (state == not_entrant) ? "not entrant" : "zombie");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
  // Make sweeper aware that there is a zombie method that needs to be removed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
  NMethodSweeper::notify(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
  // not_entrant only stuff
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
  if (state == not_entrant) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
    mark_as_seen_on_stack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
  // It's a true state change, so mark the method as decompiled.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
  inc_decompile_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
  // zombie only - if a JVMTI agent has enabled the CompiledMethodUnload event
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
  // and it hasn't already been reported for this nmethod then report it now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
  // (the event may have been reported earilier if the GC marked it for unloading).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
  if (state == zombie) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
    DTRACE_METHOD_UNLOAD_PROBE(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
    if (JvmtiExport::should_post_compiled_method_unload() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
        !unload_reported()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
      assert(method() != NULL, "checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
      {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
        HandleMark hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
        JvmtiExport::post_compiled_method_unload_at_safepoint(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
            method()->jmethod_id(), code_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
      set_unload_reported();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1262
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1264
  // Zombie only stuff
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
  if (state == zombie) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1266
    VTune::delete_nmethod(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1267
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
  // Check whether method got unloaded at a safepoint before this,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1270
  // if so we can skip the flushing steps below
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1271
  if (method() == NULL) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1272
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1273
  // Remove nmethod from method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1274
  // We need to check if both the _code and _from_compiled_code_entry_point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1275
  // refer to this nmethod because there is a race in setting these two fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1276
  // in methodOop as seen in bugid 4947125.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1277
  // If the vep() points to the zombie nmethod, the memory for the nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1278
  // could be flushed and the compiler and vtable stubs could still call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
  // through it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
  if (method()->code() == this ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1281
      method()->from_compiled_entry() == verified_entry_point()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
    HandleMark hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1283
    method()->clear_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1284
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1285
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
void nmethod::check_safepoint() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
  assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1295
void nmethod::flush() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
  // Note that there are no valid oops in the nmethod anymore.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
  assert(is_zombie() || (is_osr_method() && is_unloaded()), "must be a zombie method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
  assert(is_marked_for_reclamation() || (is_osr_method() && is_unloaded()), "must be marked for reclamation");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
  assert (!is_locked_by_vm(), "locked methods shouldn't be flushed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
  check_safepoint();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
  // completely deallocate this method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
  EventMark m("flushing nmethod " INTPTR_FORMAT " %s", this, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
  if (PrintMethodFlushing) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
    tty->print_cr("*flushing nmethod " INTPTR_FORMAT ". Live blobs: %d", this, CodeCache::nof_blobs());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
  // We need to deallocate any ExceptionCache data.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
  // Note that we do not need to grab the nmethod lock for this, it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
  // better be thread safe if we're disposing of it!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
  ExceptionCache* ec = exception_cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
  set_exception_cache(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
  while(ec != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
    ExceptionCache* next = ec->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
    delete ec;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
    ec = next;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1318
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1319
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1320
  if (on_scavenge_root_list()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1321
    CodeCache::drop_scavenge_root_nmethod(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1322
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1323
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
  ((CodeBlob*)(this))->flush();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
  CodeCache::free(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
// Notify all classes this nmethod is dependent on that it is no
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
// longer dependent. This should only be called in two situations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
// First, when a nmethod transitions to a zombie all dependents need
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
// to be clear.  Since zombification happens at a safepoint there's no
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
// synchronization issues.  The second place is a little more tricky.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
// During phase 1 of mark sweep class unloading may happen and as a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
// result some nmethods may get unloaded.  In this case the flushing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
// of dependencies must happen during phase 1 since after GC any
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
// dependencies in the unloaded nmethod won't be updated, so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
// traversing the dependency information in unsafe.  In that case this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
// function is called with a non-NULL argument and this function only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
// notifies instanceKlasses that are reachable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
void nmethod::flush_dependencies(BoolObjectClosure* is_alive) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
  assert(SafepointSynchronize::is_at_safepoint(), "must be done at safepoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
  assert(Universe::heap()->is_gc_active() == (is_alive != NULL),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
  "is_alive is non-NULL if and only if we are called during GC");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
  if (!has_flushed_dependencies()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
    set_has_flushed_dependencies();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
    for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
      klassOop klass = deps.context_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
      if (klass == NULL)  continue;  // ignore things like evol_method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
      // During GC the is_alive closure is non-NULL, and is used to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
      // determine liveness of dependees that need to be updated.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
      if (is_alive == NULL || is_alive->do_object_b(klass)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
        instanceKlass::cast(klass)->remove_dependent_nmethod(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
// If this oop is not live, the nmethod can be unloaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
bool nmethod::can_unload(BoolObjectClosure* is_alive,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
                         OopClosure* keep_alive,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
                         oop* root, bool unloading_occurred) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
  assert(root != NULL, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
  oop obj = *root;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
  if (obj == NULL || is_alive->do_object_b(obj)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1371
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
  if (obj->is_compiledICHolder()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
    compiledICHolderOop cichk_oop = compiledICHolderOop(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
    if (is_alive->do_object_b(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1376
          cichk_oop->holder_method()->method_holder()) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1377
        is_alive->do_object_b(cichk_oop->holder_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
      // The oop should be kept alive
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
      keep_alive->do_oop(root);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
  }
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1383
  // 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
  1384
  // 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
  1385
  // 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
  1386
  assert(unloading_occurred || ScavengeRootsInCode, "Inconsistency in unloading");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
  make_unloaded(is_alive, obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
// ------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
// post_compiled_method_load_event
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
// new method for install_code() path
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
// Transfer information from compilation to jvmti
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
void nmethod::post_compiled_method_load_event() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1397
  methodOop moop = method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1398
  HS_DTRACE_PROBE8(hotspot, compiled__method__load,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1399
      moop->klass_name()->bytes(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1400
      moop->klass_name()->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1401
      moop->name()->bytes(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
      moop->name()->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
      moop->signature()->bytes(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
      moop->signature()->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
      code_begin(), code_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
  if (JvmtiExport::should_post_compiled_method_load()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
    JvmtiExport::post_compiled_method_load(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
void nmethod::post_compiled_method_unload() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
  assert(_method != NULL && !is_unloaded(), "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
  DTRACE_METHOD_UNLOAD_PROBE(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
  // If a JVMTI agent has enabled the CompiledMethodUnload event then
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
  // post the event. Sometime later this nmethod will be made a zombie by
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
  // the sweeper but the methodOop will not be valid at that point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
  if (JvmtiExport::should_post_compiled_method_unload()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
    assert(!unload_reported(), "already unloaded");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
    HandleMark hm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
    JvmtiExport::post_compiled_method_unload_at_safepoint(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
                      method()->jmethod_id(), code_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
  // The JVMTI CompiledMethodUnload event can be enabled or disabled at
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
  // any time. As the nmethod is being unloaded now we mark it has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
  // having the unload event reported - this will ensure that we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
  // attempt to report the event in the unlikely scenario where the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1430
  // event is enabled at the time the nmethod is made a zombie.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
  set_unload_reported();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
// This is called at the end of the strong tracing/marking phase of a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1435
// GC to unload an nmethod if it contains otherwise unreachable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1436
// oops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1437
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
void nmethod::do_unloading(BoolObjectClosure* is_alive,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
                           OopClosure* keep_alive, bool unloading_occurred) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
  // Make sure the oop's ready to receive visitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
  assert(!is_zombie() && !is_unloaded(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
         "should not call follow on zombie or unloaded nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
  // If the method is not entrant then a JMP is plastered over the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
  // first few bytes.  If an oop in the old code was there, that oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
  // should not get GC'd.  Skip the first few bytes of oops on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
  // not-entrant methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
  address low_boundary = verified_entry_point();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
  if (is_not_entrant()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
    low_boundary += NativeJump::instruction_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
    // %%% Note:  On SPARC we patch only a 4-byte trap, not a full NativeJump.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
    // (See comment above.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
  // The RedefineClasses() API can cause the class unloading invariant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
  // to no longer be true. See jvmtiExport.hpp for details.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
  // Also, leave a debugging breadcrumb in local flag.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
  bool a_class_was_redefined = JvmtiExport::has_redefined_a_class();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
  if (a_class_was_redefined) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
    // This set of the unloading_occurred flag is done before the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
    // call to post_compiled_method_unload() so that the unloading
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
    // of this nmethod is reported.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
    unloading_occurred = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
  // Follow methodOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
  if (can_unload(is_alive, keep_alive, (oop*)&_method, unloading_occurred)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
  // Exception cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
  ExceptionCache* ec = exception_cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
  while (ec != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
    oop* ex_addr = (oop*)ec->exception_type_addr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
    oop ex = *ex_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
    ExceptionCache* next_ec = ec->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
    if (ex != NULL && !is_alive->do_object_b(ex)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
      assert(!ex->is_compiledICHolder(), "Possible error here");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
      remove_from_exception_cache(ec);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1480
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
    ec = next_ec;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
  // If class unloading occurred we first iterate over all inline caches and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
  // clear ICs where the cached oop is referring to an unloaded klass or method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
  // The remaining live cached oops will be traversed in the relocInfo::oop_type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1487
  // iteration below.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
  if (unloading_occurred) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
    RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
    while(iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
      if (iter.type() == relocInfo::virtual_call_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
        CompiledIC *ic = CompiledIC_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
        oop ic_oop = ic->cached_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
        if (ic_oop != NULL && !is_alive->do_object_b(ic_oop)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1495
          // The only exception is compiledICHolder oops which may
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
          // yet be marked below. (We check this further below).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
          if (ic_oop->is_compiledICHolder()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
            compiledICHolderOop cichk_oop = compiledICHolderOop(ic_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
            if (is_alive->do_object_b(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
                  cichk_oop->holder_method()->method_holder()) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
                is_alive->do_object_b(cichk_oop->holder_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
              continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
          ic->set_to_clean();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
          assert(ic->cached_oop() == NULL, "cached oop in IC should be cleared")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1508
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1509
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1510
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1511
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1512
  // Compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1513
  RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
    if (iter.type() == relocInfo::oop_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
      oop_Relocation* r = iter.oop_reloc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
      // In this loop, we must only traverse those oops directly embedded in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
      // the code.  Other oops (oop_index>0) are seen as part of scopes_oops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
      assert(1 == (r->oop_is_immediate()) +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
                  (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1521
             "oop must be found in exactly one place");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
      if (r->oop_is_immediate() && r->oop_value() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1523
        if (can_unload(is_alive, keep_alive, r->oop_addr(), unloading_occurred)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
          return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1526
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1528
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
  // Scopes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
  for (oop* p = oops_begin(); p < oops_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
    if (*p == Universe::non_oop_word())  continue;  // skip non-oops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
    if (can_unload(is_alive, keep_alive, p, unloading_occurred)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
  // This nmethod was not unloaded; check below that all CompiledICs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
  // refer to marked oops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
    RelocIterator iter(this, low_boundary);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
    while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
      if (iter.type() == relocInfo::virtual_call_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
         CompiledIC *ic = CompiledIC_at(iter.reloc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
         oop ic_oop = ic->cached_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
         assert(ic_oop == NULL || is_alive->do_object_b(ic_oop),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
                "Found unmarked ic_oop in reachable nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
       }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
#endif // !PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1556
// This method is called twice during GC -- once while
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1557
// tracing the "active" nmethods on thread stacks during
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1558
// the (strong) marking phase, and then again when walking
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1559
// the code cache contents during the weak roots processing
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1560
// 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
  1561
// 'do_strong_roots_only' flag, which is true in the first
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1562
// case. We want to walk the weak roots in the nmethod
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1563
// only in the second case. The weak roots in the nmethod
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1564
// are the oops in the ExceptionCache and the InlineCache
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1565
// oops.
3913
e049e6b81e11 6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
jrose
parents: 3912
diff changeset
  1566
void nmethod::oops_do(OopClosure* f, bool do_strong_roots_only) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
  // make sure the oops ready to receive visitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
  assert(!is_zombie() && !is_unloaded(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
         "should not call follow on zombie or unloaded nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
  // If the method is not entrant or zombie then a JMP is plastered over the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
  // first few bytes.  If an oop in the old code was there, that oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
  // should not get GC'd.  Skip the first few bytes of oops on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
  // not-entrant methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
  address low_boundary = verified_entry_point();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
  if (is_not_entrant()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
    low_boundary += NativeJump::instruction_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
    // %%% Note:  On SPARC we patch only a 4-byte trap, not a full NativeJump.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
    // (See comment above.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
  // Compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
  f->do_oop((oop*) &_method);
3913
e049e6b81e11 6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods
jrose
parents: 3912
diff changeset
  1584
  if (!do_strong_roots_only) {
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1585
    // weak roots processing phase -- update ExceptionCache oops
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1586
    ExceptionCache* ec = exception_cache();
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1587
    while(ec != NULL) {
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1588
      f->do_oop((oop*)ec->exception_type_addr());
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1589
      ec = ec->next();
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1590
    }
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1591
  } // Else strong roots phase -- skip oops in ExceptionCache
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
  RelocIterator iter(this, low_boundary);
3696
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1594
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
    if (iter.type() == relocInfo::oop_type ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
      oop_Relocation* r = iter.oop_reloc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
      // In this loop, we must only follow those oops directly embedded in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
      // 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
  1600
      assert(1 == (r->oop_is_immediate()) +
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1601
                   (r->oop_addr() >= oops_begin() && r->oop_addr() < oops_end()),
9e5d9b5e1049 4957990: Perm heap bloat in JVM
ysr
parents: 2131
diff changeset
  1602
             "oop must be found in exactly one place");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
      if (r->oop_is_immediate() && r->oop_value() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
        f->do_oop(r->oop_addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
  // Scopes
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1610
  // This includes oop constants not inlined in the code stream.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
  for (oop* p = oops_begin(); p < oops_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
    if (*p == Universe::non_oop_word())  continue;  // skip non-oops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
    f->do_oop(p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1617
#define NMETHOD_SENTINEL ((nmethod*)badAddress)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1618
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1619
nmethod* volatile nmethod::_oops_do_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1620
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1621
// 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
  1622
// 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
  1623
// 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
  1624
// 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
  1625
bool nmethod::test_set_oops_do_mark() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1626
  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
  1627
  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
  1628
  if (observed_mark_link == NULL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1629
    // 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
  1630
    observed_mark_link = (nmethod*)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1631
      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
  1632
    if (observed_mark_link == NULL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1633
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1634
      // 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
  1635
      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
  1636
      for (;;) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1637
        nmethod* required_mark_nmethods = observed_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1638
        _oops_do_mark_link = required_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1639
        observed_mark_nmethods = (nmethod*)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1640
          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
  1641
        if (observed_mark_nmethods == required_mark_nmethods)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1642
          break;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1643
      }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1644
      // Mark was clear when we first saw this guy.
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1645
      NOT_PRODUCT(if (TraceScavenge)  print_on(tty, "oops_do, mark\n"));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1646
      return false;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1647
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1648
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1649
  // 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
  1650
  return true;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1651
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1652
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1653
void nmethod::oops_do_marking_prologue() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1654
  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
  1655
  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
  1656
  // 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
  1657
  // 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
  1658
  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
  1659
  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
  1660
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1661
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1662
void nmethod::oops_do_marking_epilogue() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1663
  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
  1664
  nmethod* cur = _oops_do_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1665
  while (cur != NMETHOD_SENTINEL) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1666
    assert(cur != NULL, "not NULL-terminated");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1667
    nmethod* next = cur->_oops_do_mark_link;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1668
    cur->_oops_do_mark_link = NULL;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1669
    NOT_PRODUCT(if (TraceScavenge)  cur->print_on(tty, "oops_do, unmark\n"));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1670
    cur = next;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1671
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1672
  void* required = _oops_do_mark_nmethods;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1673
  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
  1674
  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
  1675
  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
  1676
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1677
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1678
class DetectScavengeRoot: public OopClosure {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1679
  bool     _detected_scavenge_root;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1680
public:
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1681
  DetectScavengeRoot() : _detected_scavenge_root(false)
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1682
  { NOT_PRODUCT(_print_nm = NULL); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1683
  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
  1684
  virtual void do_oop(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1685
    if ((*p) != NULL && (*p)->is_scavengable()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1686
      NOT_PRODUCT(maybe_print(p));
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1687
      _detected_scavenge_root = true;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1688
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1689
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1690
  virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1691
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1692
#ifndef PRODUCT
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1693
  nmethod* _print_nm;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1694
  void maybe_print(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1695
    if (_print_nm == NULL)  return;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1696
    if (!_detected_scavenge_root)  _print_nm->print_on(tty, "new scavenge root");
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1697
    tty->print_cr(""PTR_FORMAT"[offset=%d] detected non-perm oop "PTR_FORMAT" (found at "PTR_FORMAT")",
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1698
                  _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
  1699
                  (intptr_t)(*p), (intptr_t)p);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1700
    (*p)->print();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1701
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1702
#endif //PRODUCT
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1703
};
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1704
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1705
bool nmethod::detect_scavenge_root_oops() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1706
  DetectScavengeRoot detect_scavenge_root;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1707
  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
  1708
  oops_do(&detect_scavenge_root);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1709
  return detect_scavenge_root.detected_scavenge_root();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1710
}
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  1711
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
// Method that knows how to preserve outgoing arguments at call. This method must be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
// called with a frame corresponding to a Java invoke
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
void nmethod::preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
  if (!method()->is_native()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
    SimpleScopeDesc ssd(this, fr.pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
    Bytecode_invoke* call = Bytecode_invoke_at(ssd.method(), ssd.bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
    bool is_static = call->is_invokestatic();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
    symbolOop signature = call->signature();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
    fr.oops_compiled_arguments_do(signature, is_static, reg_map, f);
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
oop nmethod::embeddedOop_at(u_char* p) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
  RelocIterator iter(this, p, p + oopSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
  while (iter.next())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
    if (iter.type() == relocInfo::oop_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
      return iter.oop_reloc()->oop_value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
inline bool includes(void* p, void* from, void* to) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
  return from <= p && p < to;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
void nmethod::copy_scopes_pcs(PcDesc* pcs, int count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
  assert(count >= 2, "must be sentinel values, at least");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
  // must be sorted and unique; we do a binary search in find_pc_desc()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
  int prev_offset = pcs[0].pc_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
  assert(prev_offset == PcDesc::lower_offset_limit,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
         "must start with a sentinel");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
  for (int i = 1; i < count; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
    int this_offset = pcs[i].pc_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
    assert(this_offset > prev_offset, "offsets must be sorted");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
    prev_offset = this_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
  assert(prev_offset == PcDesc::upper_offset_limit,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
         "must end with a sentinel");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
#endif //ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
  int size = count * sizeof(PcDesc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
  assert(scopes_pcs_size() >= size, "oob");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
  memcpy(scopes_pcs_begin(), pcs, size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
  // Adjust the final sentinel downward.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
  PcDesc* last_pc = &scopes_pcs_begin()[count-1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
  assert(last_pc->pc_offset() == PcDesc::upper_offset_limit, "sanity");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
  last_pc->set_pc_offset(instructions_size() + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
  for (; last_pc + 1 < scopes_pcs_end(); last_pc += 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
    // Fill any rounding gaps with copies of the last record.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
    last_pc[1] = last_pc[0];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
  // The following assert could fail if sizeof(PcDesc) is not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
  // an integral multiple of oopSize (the rounding term).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
  // If it fails, change the logic to always allocate a multiple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
  // of sizeof(PcDesc), and fill unused words with copies of *last_pc.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
  assert(last_pc + 1 == scopes_pcs_end(), "must match exactly");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
void nmethod::copy_scopes_data(u_char* buffer, int size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
  assert(scopes_data_size() >= size, "oob");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
  memcpy(scopes_data_begin(), buffer, size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
static PcDesc* linear_search(nmethod* nm, int pc_offset, bool approximate) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1784
  PcDesc* lower = nm->scopes_pcs_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1785
  PcDesc* upper = nm->scopes_pcs_end();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
  lower += 1; // exclude initial sentinel
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
  PcDesc* res = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
  for (PcDesc* p = lower; p < upper; p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
    NOT_PRODUCT(--nmethod_stats.pc_desc_tests);  // don't count this call to match_desc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
    if (match_desc(p, pc_offset, approximate)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
      if (res == NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
        res = p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
      else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1794
        res = (PcDesc*) badAddress;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1795
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
  return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
// Finds a PcDesc with real-pc equal to "pc"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
PcDesc* nmethod::find_pc_desc_internal(address pc, bool approximate) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1804
  address base_address = instructions_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1805
  if ((pc < base_address) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
      (pc - base_address) >= (ptrdiff_t) PcDesc::upper_offset_limit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
    return NULL;  // PC is wildly out of range
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
  int pc_offset = (int) (pc - base_address);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
  // Check the PcDesc cache if it contains the desired PcDesc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
  // (This as an almost 100% hit rate.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
  PcDesc* res = _pc_desc_cache.find_pc_desc(pc_offset, approximate);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
  if (res != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
    assert(res == linear_search(this, pc_offset, approximate), "cache ok");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
    return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
  // Fallback algorithm: quasi-linear search for the PcDesc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
  // Find the last pc_offset less than the given offset.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
  // The successor must be the required match, if there is a match at all.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
  // (Use a fixed radix to avoid expensive affine pointer arithmetic.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
  PcDesc* lower = scopes_pcs_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
  PcDesc* upper = scopes_pcs_end();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
  upper -= 1; // exclude final sentinel
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
  if (lower >= upper)  return NULL;  // native method; no PcDescs at all
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
#define assert_LU_OK \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
  /* invariant on lower..upper during the following search: */ \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
  assert(lower->pc_offset() <  pc_offset, "sanity"); \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
  assert(upper->pc_offset() >= pc_offset, "sanity")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
  assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
  // Use the last successful return as a split point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
  PcDesc* mid = _pc_desc_cache.last_pc_desc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
  NOT_PRODUCT(++nmethod_stats.pc_desc_searches);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
  if (mid->pc_offset() < pc_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
    lower = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
    upper = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
  // Take giant steps at first (4096, then 256, then 16, then 1)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
  const int LOG2_RADIX = 4 /*smaller steps in debug mode:*/ debug_only(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
  const int RADIX = (1 << LOG2_RADIX);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
  for (int step = (1 << (LOG2_RADIX*3)); step > 1; step >>= LOG2_RADIX) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
    while ((mid = lower + step) < upper) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
      assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
      NOT_PRODUCT(++nmethod_stats.pc_desc_searches);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
      if (mid->pc_offset() < pc_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
        lower = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
        upper = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
    assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
  // Sneak up on the value with a linear search of length ~16.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
  while (true) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
    assert_LU_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
    mid = lower + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
    NOT_PRODUCT(++nmethod_stats.pc_desc_searches);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
    if (mid->pc_offset() < pc_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
      lower = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
      upper = mid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
#undef assert_LU_OK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
  if (match_desc(upper, pc_offset, approximate)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
    assert(upper == linear_search(this, pc_offset, approximate), "search ok");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
    _pc_desc_cache.add_pc_desc(upper);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
    return upper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
    assert(NULL == linear_search(this, pc_offset, approximate), "search ok");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
bool nmethod::check_all_dependencies() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
  bool found_check = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
  // wholesale check of all dependencies
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
    if (deps.check_dependency() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
      found_check = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
      NOT_DEBUG(break);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
  return found_check;  // tell caller if we found anything
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
bool nmethod::check_dependency_on(DepChange& changes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
  // What has happened:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
  // 1) a new class dependee has been added
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
  // 2) dependee and all its super classes have been marked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
  bool found_check = false;  // set true if we are upset
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
    // Evaluate only relevant dependencies.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
    if (deps.spot_check_dependency_at(changes) != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
      found_check = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
      NOT_DEBUG(break);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
  return found_check;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
bool nmethod::is_evol_dependent_on(klassOop dependee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
  instanceKlass *dependee_ik = instanceKlass::cast(dependee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
  objArrayOop dependee_methods = dependee_ik->methods();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
    if (deps.type() == Dependencies::evol_method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1917
      methodOop method = deps.method_argument(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1918
      for (int j = 0; j < dependee_methods->length(); j++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
        if ((methodOop) dependee_methods->obj_at(j) == method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1920
          // RC_TRACE macro has an embedded ResourceMark
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
          RC_TRACE(0x01000000,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
            ("Found evol dependency of nmethod %s.%s(%s) compile_id=%d on method %s.%s(%s)",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
            _method->method_holder()->klass_part()->external_name(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
            _method->name()->as_C_string(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
            _method->signature()->as_C_string(), compile_id(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
            method->method_holder()->klass_part()->external_name(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
            method->name()->as_C_string(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
            method->signature()->as_C_string()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
          if (TraceDependencies || LogCompilation)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
            deps.log_dependency(dependee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
          return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1934
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
// Called from mark_for_deoptimization, when dependee is invalidated.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
bool nmethod::is_dependent_on_method(methodOop dependee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
    if (deps.type() != Dependencies::evol_method)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
      continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
    methodOop method = deps.method_argument(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
    if (method == dependee) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
bool nmethod::is_patchable_at(address instr_addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
  assert (code_contains(instr_addr), "wrong nmethod used");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
  if (is_zombie()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
    // a zombie may never be patched
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
address nmethod::continuation_for_implicit_exception(address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
  // Exception happened outside inline-cache check code => we are inside
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
  // an active nmethod => use cpc to determine a return address
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
  int exception_offset = pc - instructions_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
  int cont_offset = ImplicitExceptionTable(this).at( exception_offset );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
  if (cont_offset == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
    Thread* thread = ThreadLocalStorage::get_thread_slow();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
    ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
    HandleMark hm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
    ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
    CodeBlob* cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
    assert(cb != NULL && cb == this, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
    tty->print_cr("implicit exception happened at " INTPTR_FORMAT, pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
    print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
    method()->print_codes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
    print_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1978
    print_pcs();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1979
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1980
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1981
  guarantee(cont_offset != 0, "unhandled implicit exception in compiled code");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1982
  return instructions_begin() + cont_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1985
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1986
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1987
void nmethod_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1988
  // make sure you didn't forget to adjust the filler fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1989
  assert(sizeof(nmFlags) <= 4,           "nmFlags occupies more than a word");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1990
  assert(sizeof(nmethod) % oopSize == 0, "nmethod size must be multiple of a word");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1991
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1992
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1994
//-------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
// QQQ might we make this work from a frame??
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
nmethodLocker::nmethodLocker(address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
  CodeBlob* cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
  guarantee(cb != NULL && cb->is_nmethod(), "bad pc for a nmethod found");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
  _nm = (nmethod*)cb;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
  lock_nmethod(_nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
void nmethodLocker::lock_nmethod(nmethod* nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
  if (nm == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
  Atomic::inc(&nm->_lock_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
  guarantee(!nm->is_zombie(), "cannot lock a zombie method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
void nmethodLocker::unlock_nmethod(nmethod* nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
  if (nm == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
  Atomic::dec(&nm->_lock_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
  guarantee(nm->_lock_count >= 0, "unmatched nmethod lock/unlock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
bool nmethod::is_deopt_pc(address pc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
  bool ret =  pc == deopt_handler_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
  return ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
// -----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
// Verification
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2026
class VerifyOopsClosure: public OopClosure {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2027
  nmethod* _nm;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2028
  bool     _ok;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2029
public:
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2030
  VerifyOopsClosure(nmethod* nm) : _nm(nm), _ok(true) { }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2031
  bool ok() { return _ok; }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2032
  virtual void do_oop(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2033
    if ((*p) == NULL || (*p)->is_oop())  return;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2034
    if (_ok) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2035
      _nm->print_nmethod(true);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2036
      _ok = false;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2037
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2038
    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
  2039
                  (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
  2040
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2041
  virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2042
};
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2043
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
void nmethod::verify() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
  // Hmm. OSR methods can be deopted but not marked as zombie or not_entrant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
  // seems odd.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
  if( is_zombie() || is_not_entrant() )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
  // Make sure all the entry points are correctly aligned for patching.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
  NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
  assert(method()->is_oop(), "must be valid");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2056
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
  if (!CodeCache::contains(this)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
    fatal1("nmethod at " INTPTR_FORMAT " not in zone", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
  if(is_native_method() )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2065
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
  nmethod* nm = CodeCache::find_nmethod(verified_entry_point());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
  if (nm != this) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
    fatal1("findNMethod did not find this nmethod (" INTPTR_FORMAT ")", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
  for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
    if (! p->verify(this)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
      tty->print_cr("\t\tin nmethod at " INTPTR_FORMAT " (pcs)", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2077
  VerifyOopsClosure voc(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2078
  oops_do(&voc);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2079
  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
  2080
  verify_scavenge_root_oops();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2081
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
  verify_scopes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
void nmethod::verify_interrupt_point(address call_site) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
  // This code does not work in release mode since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
  // owns_lock only is available in debug mode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
  CompiledIC* ic = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
  Thread *cur = Thread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
  if (CompiledIC_lock->owner() == cur ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
      ((cur->is_VM_thread() || cur->is_ConcurrentGC_thread()) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
       SafepointSynchronize::is_at_safepoint())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
    ic = CompiledIC_at(call_site);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
    CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
    MutexLocker ml_verify (CompiledIC_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
    ic = CompiledIC_at(call_site);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
  PcDesc* pd = pc_desc_at(ic->end_of_call());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
  assert(pd != NULL, "PcDesc must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
  for (ScopeDesc* sd = new ScopeDesc(this, pd->scope_decode_offset(),
3686
69c1b5228547 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 2131
diff changeset
  2103
                                     pd->obj_decode_offset(), pd->should_reexecute());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
       !sd->is_top(); sd = sd->sender()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
    sd->verify();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
void nmethod::verify_scopes() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
  if( !method() ) return;       // Runtime stubs have no scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
  if (method()->is_native()) return; // Ignore stub methods.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
  // iterate through all interrupt point
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
  // and verify the debug information is valid.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
  RelocIterator iter((nmethod*)this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
    address stub = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
    switch (iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
      case relocInfo::virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
        verify_interrupt_point(iter.addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
      case relocInfo::opt_virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
        stub = iter.opt_virtual_call_reloc()->static_stub();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
        verify_interrupt_point(iter.addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
      case relocInfo::static_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
        stub = iter.static_call_reloc()->static_stub();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
        //verify_interrupt_point(iter.addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
      case relocInfo::runtime_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
        address destination = iter.reloc()->value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
        // Right now there is no way to find out which entries support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
        // an interrupt point.  It would be nice if we had this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
        // information in a table.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2136
    assert(stub == NULL || stub_contains(stub), "static call stub outside stub section");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2137
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2138
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
// -----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
// Non-product code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2145
class DebugScavengeRoot: public OopClosure {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2146
  nmethod* _nm;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2147
  bool     _ok;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2148
public:
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2149
  DebugScavengeRoot(nmethod* nm) : _nm(nm), _ok(true) { }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2150
  bool ok() { return _ok; }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2151
  virtual void do_oop(oop* p) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2152
    if ((*p) == NULL || !(*p)->is_scavengable())  return;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2153
    if (_ok) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2154
      _nm->print_nmethod(true);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2155
      _ok = false;
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2156
    }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2157
    tty->print_cr("*** non-perm 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
  2158
                  (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
  2159
    (*p)->print();
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2160
  }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2161
  virtual void do_oop(narrowOop* p) { ShouldNotReachHere(); }
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2162
};
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2163
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2164
void nmethod::verify_scavenge_root_oops() {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2165
  if (!on_scavenge_root_list()) {
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2166
    // 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
  2167
    DebugScavengeRoot debug_scavenge_root(this);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2168
    oops_do(&debug_scavenge_root);
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2169
    if (!debug_scavenge_root.ok())
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2170
      fatal("found an unadvertised bad non-perm oop in the code cache");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2171
  }
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2172
  assert(scavenge_root_not_marked(), "");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2173
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2174
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2175
#endif // PRODUCT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
// Printing operations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
void nmethod::print() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
  ttyLocker ttyl;   // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
  tty->print("Compiled ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
  if (is_compiled_by_c1()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
    tty->print("(c1) ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
  } else if (is_compiled_by_c2()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
    tty->print("(c2) ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
    tty->print("(nm) ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
  print_on(tty, "nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
  if (WizardMode) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
    tty->print("((nmethod*) "INTPTR_FORMAT ") ", this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
    tty->print(" for method " INTPTR_FORMAT , (address)method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
    tty->print(" { ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
    if (version())        tty->print("v%d ", version());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
    if (level())          tty->print("l%d ", level());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
    if (is_in_use())      tty->print("in_use ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
    if (is_not_entrant()) tty->print("not_entrant ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
    if (is_zombie())      tty->print("zombie ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
    if (is_unloaded())    tty->print("unloaded ");
3908
24b55ad4c228 6863023: need non-perm oops in code cache for JSR 292
jrose
parents: 3686
diff changeset
  2205
    if (on_scavenge_root_list())  tty->print("scavenge_root ");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
    tty->print_cr("}:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
  if (size              () > 0) tty->print_cr(" total in heap  [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
                                              (address)this,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
                                              (address)this + size(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
                                              size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
  if (relocation_size   () > 0) tty->print_cr(" relocation     [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
                                              relocation_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
                                              relocation_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
                                              relocation_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
  if (code_size         () > 0) tty->print_cr(" main code      [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
                                              code_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
                                              code_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
                                              code_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
  if (stub_size         () > 0) tty->print_cr(" stub code      [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
                                              stub_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
                                              stub_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
                                              stub_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
  if (consts_size       () > 0) tty->print_cr(" constants      [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
                                              consts_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2226
                                              consts_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
                                              consts_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
  if (scopes_data_size  () > 0) tty->print_cr(" scopes data    [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
                                              scopes_data_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
                                              scopes_data_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
                                              scopes_data_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
  if (scopes_pcs_size   () > 0) tty->print_cr(" scopes pcs     [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
                                              scopes_pcs_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
                                              scopes_pcs_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
                                              scopes_pcs_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
  if (dependencies_size () > 0) tty->print_cr(" dependencies   [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2237
                                              dependencies_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
                                              dependencies_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
                                              dependencies_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
  if (handler_table_size() > 0) tty->print_cr(" handler table  [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
                                              handler_table_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
                                              handler_table_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
                                              handler_table_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
  if (nul_chk_table_size() > 0) tty->print_cr(" nul chk table  [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
                                              nul_chk_table_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
                                              nul_chk_table_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
                                              nul_chk_table_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
  if (oops_size         () > 0) tty->print_cr(" oops           [" INTPTR_FORMAT "," INTPTR_FORMAT "] = %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
                                              oops_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
                                              oops_end(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
                                              oops_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2254
void nmethod::print_code() {
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2255
  HandleMark hm;
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2256
  ResourceMark m;
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2257
  Disassembler::decode(this);
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2258
}
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2259
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2260
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2261
#ifndef PRODUCT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2262
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2263
void nmethod::print_scopes() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
  // Find the first pc desc for all scopes in the code and print it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
  for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
    if (p->scope_decode_offset() == DebugInformationRecorder::serialized_null)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
      continue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
    ScopeDesc* sd = scope_desc_at(p->real_pc(this));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
    sd->print_on(tty, p);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
void nmethod::print_dependencies() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
  ttyLocker ttyl;   // keep the following output all in one block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
  tty->print_cr("Dependencies:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
  for (Dependencies::DepStream deps(this); deps.next(); ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
    deps.print_dependency();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
    klassOop ctxk = deps.context_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
    if (ctxk != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
      Klass* k = Klass::cast(ctxk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
      if (k->oop_is_instance() && ((instanceKlass*)k)->is_dependent_nmethod(this)) {
203
2e348cc9121a 6610906: inexplicable IncompatibleClassChangeError
jrose
parents: 1
diff changeset
  2285
        tty->print_cr("   [nmethod<=klass]%s", k->external_name());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
    deps.log_dependency();  // put it into the xml log also
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
void nmethod::print_relocations() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
  ResourceMark m;       // in case methods get printed via the debugger
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
  tty->print_cr("relocations:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
  RelocIterator iter(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
  iter.print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
  if (UseRelocIndex) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
    jint* index_end   = (jint*)relocation_end() - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
    jint  index_size  = *index_end;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
    jint* index_start = (jint*)( (address)index_end - index_size );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2302
    tty->print_cr("    index @" INTPTR_FORMAT ": index_size=%d", index_start, index_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2303
    if (index_size > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
      jint* ip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2305
      for (ip = index_start; ip+2 <= index_end; ip += 2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2306
        tty->print_cr("  (%d %d) addr=" INTPTR_FORMAT " @" INTPTR_FORMAT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2307
                      ip[0],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2308
                      ip[1],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2309
                      header_end()+ip[0],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2310
                      relocation_begin()-1+ip[1]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2311
      for (; ip < index_end; ip++)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2312
        tty->print_cr("  (%d ?)", ip[0]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2313
      tty->print_cr("          @" INTPTR_FORMAT ": index_size=%d", ip, *ip++);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2314
      tty->print_cr("reloc_end @" INTPTR_FORMAT ":", ip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2315
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2316
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2317
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2318
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2319
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2320
void nmethod::print_pcs() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
  ResourceMark m;       // in case methods get printed via debugger
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2322
  tty->print_cr("pc-bytecode offsets:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
  for (PcDesc* p = scopes_pcs_begin(); p < scopes_pcs_end(); p++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2324
    p->print(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2325
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2326
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2327
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2328
#endif // PRODUCT
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2329
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2330
const char* nmethod::reloc_string_for(u_char* begin, u_char* end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
  RelocIterator iter(this, begin, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2332
  bool have_one = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2333
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
    have_one = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2335
    switch (iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2336
        case relocInfo::none:                  return "no_reloc";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2337
        case relocInfo::oop_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2338
          stringStream st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2339
          oop_Relocation* r = iter.oop_reloc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2340
          oop obj = r->oop_value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2341
          st.print("oop(");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2342
          if (obj == NULL) st.print("NULL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2343
          else obj->print_value_on(&st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2344
          st.print(")");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2345
          return st.as_string();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2346
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2347
        case relocInfo::virtual_call_type:     return "virtual_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2348
        case relocInfo::opt_virtual_call_type: return "optimized virtual_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2349
        case relocInfo::static_call_type:      return "static_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2350
        case relocInfo::static_stub_type:      return "static_stub";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2351
        case relocInfo::runtime_call_type:     return "runtime_call";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2352
        case relocInfo::external_word_type:    return "external_word";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2353
        case relocInfo::internal_word_type:    return "internal_word";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2354
        case relocInfo::section_word_type:     return "section_word";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2355
        case relocInfo::poll_type:             return "poll";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2356
        case relocInfo::poll_return_type:      return "poll_return";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2357
        case relocInfo::type_mask:             return "type_bit_mask";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2358
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2359
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2360
  return have_one ? "other" : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2361
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2362
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2363
// Return a the last scope in (begin..end]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2364
ScopeDesc* nmethod::scope_desc_in(address begin, address end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2365
  PcDesc* p = pc_desc_near(begin+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2366
  if (p != NULL && p->real_pc(this) <= end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2367
    return new ScopeDesc(this, p->scope_decode_offset(),
3686
69c1b5228547 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 2131
diff changeset
  2368
                         p->obj_decode_offset(), p->should_reexecute());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2372
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2373
void nmethod::print_code_comment_on(outputStream* st, int column, u_char* begin, u_char* end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2374
  // First, find an oopmap in (begin, end].
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
  // We use the odd half-closed interval so that oop maps and scope descs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2376
  // which are tied to the byte after a call are printed with the call itself.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2377
  address base = instructions_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2378
  OopMapSet* oms = oop_maps();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2379
  if (oms != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2380
    for (int i = 0, imax = oms->size(); i < imax; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2381
      OopMap* om = oms->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2382
      address pc = base + om->offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2383
      if (pc > begin) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
        if (pc <= end) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2385
          st->move_to(column);
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2386
          st->print("; ");
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2387
          om->print_on(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2388
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2389
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2390
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2391
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
  }
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2393
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2394
  // Print any debug info present at this pc.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
  ScopeDesc* sd  = scope_desc_in(begin, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2396
  if (sd != NULL) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2397
    st->move_to(column);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2398
    if (sd->bci() == SynchronizationEntryBCI) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2399
      st->print(";*synchronization entry");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2400
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2401
      if (sd->method().is_null()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2402
        st->print("method is NULL");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2403
      } else if (sd->method()->is_native()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2404
        st->print("method is native");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2405
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2406
        address bcp  = sd->method()->bcp_from(sd->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2407
        Bytecodes::Code bc = Bytecodes::java_code_at(bcp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2408
        st->print(";*%s", Bytecodes::name(bc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2409
        switch (bc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2410
        case Bytecodes::_invokevirtual:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2411
        case Bytecodes::_invokespecial:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2412
        case Bytecodes::_invokestatic:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2413
        case Bytecodes::_invokeinterface:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2414
          {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2415
            Bytecode_invoke* invoke = Bytecode_invoke_at(sd->method(), sd->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2416
            st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2417
            if (invoke->name() != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2418
              invoke->name()->print_symbol_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2419
            else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2420
              st->print("<UNKNOWN>");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2421
            break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2422
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2423
        case Bytecodes::_getfield:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2424
        case Bytecodes::_putfield:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2425
        case Bytecodes::_getstatic:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2426
        case Bytecodes::_putstatic:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2427
          {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2428
            methodHandle sdm = sd->method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2429
            Bytecode_field* field = Bytecode_field_at(sdm(), sdm->bcp_from(sd->bci()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2430
            constantPoolOop sdmc = sdm->constants();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2431
            symbolOop name = sdmc->name_ref_at(field->index());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2432
            st->print(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2433
            if (name != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2434
              name->print_symbol_on(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2435
            else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2436
              st->print("<UNKNOWN>");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2437
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2438
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2439
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2440
    }
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2441
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2442
    // Print all scopes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2443
    for (;sd != NULL; sd = sd->sender()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2444
      st->move_to(column);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2445
      st->print("; -");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2446
      if (sd->method().is_null()) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2447
        st->print("method is NULL");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2448
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2449
        sd->method()->print_short_name(st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2450
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2451
      int lineno = sd->method()->line_number_from_bci(sd->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2452
      if (lineno != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2453
        st->print("@%d (line %d)", sd->bci(), lineno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2454
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2455
        st->print("@%d", sd->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2456
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2457
      st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2458
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2459
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2460
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2461
  // Print relocation information
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2462
  const char* str = reloc_string_for(begin, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2463
  if (str != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2464
    if (sd != NULL) st->cr();
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2465
    st->move_to(column);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2466
    st->print(";   {%s}", str);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2467
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2468
  int cont_offset = ImplicitExceptionTable(this).at(begin - instructions_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2469
  if (cont_offset != 0) {
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2470
    st->move_to(column);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2471
    st->print("; implicit exception: dispatches to " INTPTR_FORMAT, instructions_begin() + cont_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2472
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2473
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2474
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2475
347
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2476
#ifndef PRODUCT
df859fcca515 6667042: PrintAssembly option does not work without special plugin
jrose
parents: 203
diff changeset
  2477
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2478
void nmethod::print_value_on(outputStream* st) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2479
  print_on(st, "nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2480
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2481
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2482
void nmethod::print_calls(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2483
  RelocIterator iter(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2484
  while (iter.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2485
    switch (iter.type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2486
    case relocInfo::virtual_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2487
    case relocInfo::opt_virtual_call_type: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2488
      VerifyMutexLocker mc(CompiledIC_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2489
      CompiledIC_at(iter.reloc())->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2490
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2491
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2492
    case relocInfo::static_call_type:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2493
      st->print_cr("Static call at " INTPTR_FORMAT, iter.reloc()->addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2494
      compiledStaticCall_at(iter.reloc())->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2495
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2496
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2497
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2498
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2499
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2500
void nmethod::print_handler_table() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2501
  ExceptionHandlerTable(this).print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2502
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2503
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2504
void nmethod::print_nul_chk_table() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2505
  ImplicitExceptionTable(this).print(instructions_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2506
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2507
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2508
void nmethod::print_statistics() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2509
  ttyLocker ttyl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2510
  if (xtty != NULL)  xtty->head("statistics type='nmethod'");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2511
  nmethod_stats.print_native_nmethod_stats();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2512
  nmethod_stats.print_nmethod_stats();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2513
  DebugInformationRecorder::print_statistics();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2514
  nmethod_stats.print_pc_stats();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2515
  Dependencies::print_statistics();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2516
  if (xtty != NULL)  xtty->tail("statistics");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2517
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2518
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2519
#endif // PRODUCT