hotspot/src/share/vm/runtime/sharedRuntime.cpp
author tonyp
Thu, 21 Aug 2008 23:36:31 -0400
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permissions -rw-r--r--
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/*
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 * Copyright 1997-2008 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/_sharedRuntime.cpp.incl"
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#include <math.h>
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HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t);
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HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int,
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                      char*, int, char*, int, char*, int);
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HS_DTRACE_PROBE_DECL7(hotspot, method__return, int,
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                      char*, int, char*, int, char*, int);
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// Implementation of SharedRuntime
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#ifndef PRODUCT
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// For statistics
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int SharedRuntime::_ic_miss_ctr = 0;
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int SharedRuntime::_wrong_method_ctr = 0;
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int SharedRuntime::_resolve_static_ctr = 0;
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int SharedRuntime::_resolve_virtual_ctr = 0;
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int SharedRuntime::_resolve_opt_virtual_ctr = 0;
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int SharedRuntime::_implicit_null_throws = 0;
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int SharedRuntime::_implicit_div0_throws = 0;
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int SharedRuntime::_throw_null_ctr = 0;
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int SharedRuntime::_nof_normal_calls = 0;
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int SharedRuntime::_nof_optimized_calls = 0;
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int SharedRuntime::_nof_inlined_calls = 0;
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int SharedRuntime::_nof_megamorphic_calls = 0;
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int SharedRuntime::_nof_static_calls = 0;
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int SharedRuntime::_nof_inlined_static_calls = 0;
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int SharedRuntime::_nof_interface_calls = 0;
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int SharedRuntime::_nof_optimized_interface_calls = 0;
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int SharedRuntime::_nof_inlined_interface_calls = 0;
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int SharedRuntime::_nof_megamorphic_interface_calls = 0;
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int SharedRuntime::_nof_removable_exceptions = 0;
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int SharedRuntime::_new_instance_ctr=0;
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int SharedRuntime::_new_array_ctr=0;
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int SharedRuntime::_multi1_ctr=0;
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int SharedRuntime::_multi2_ctr=0;
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int SharedRuntime::_multi3_ctr=0;
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int SharedRuntime::_multi4_ctr=0;
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int SharedRuntime::_multi5_ctr=0;
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int SharedRuntime::_mon_enter_stub_ctr=0;
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int SharedRuntime::_mon_exit_stub_ctr=0;
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int SharedRuntime::_mon_enter_ctr=0;
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int SharedRuntime::_mon_exit_ctr=0;
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int SharedRuntime::_partial_subtype_ctr=0;
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int SharedRuntime::_jbyte_array_copy_ctr=0;
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int SharedRuntime::_jshort_array_copy_ctr=0;
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int SharedRuntime::_jint_array_copy_ctr=0;
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int SharedRuntime::_jlong_array_copy_ctr=0;
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int SharedRuntime::_oop_array_copy_ctr=0;
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int SharedRuntime::_checkcast_array_copy_ctr=0;
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int SharedRuntime::_unsafe_array_copy_ctr=0;
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int SharedRuntime::_generic_array_copy_ctr=0;
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int SharedRuntime::_slow_array_copy_ctr=0;
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int SharedRuntime::_find_handler_ctr=0;
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int SharedRuntime::_rethrow_ctr=0;
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int     SharedRuntime::_ICmiss_index                    = 0;
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int     SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count];
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address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count];
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void SharedRuntime::trace_ic_miss(address at) {
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  for (int i = 0; i < _ICmiss_index; i++) {
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    if (_ICmiss_at[i] == at) {
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      _ICmiss_count[i]++;
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      return;
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    }
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  }
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  int index = _ICmiss_index++;
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  if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1;
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  _ICmiss_at[index] = at;
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  _ICmiss_count[index] = 1;
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}
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void SharedRuntime::print_ic_miss_histogram() {
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  if (ICMissHistogram) {
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    tty->print_cr ("IC Miss Histogram:");
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    int tot_misses = 0;
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    for (int i = 0; i < _ICmiss_index; i++) {
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      tty->print_cr("  at: " INTPTR_FORMAT "  nof: %d", _ICmiss_at[i], _ICmiss_count[i]);
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      tot_misses += _ICmiss_count[i];
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    }
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    tty->print_cr ("Total IC misses: %7d", tot_misses);
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  }
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}
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#endif // PRODUCT
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#ifndef SERIALGC
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// G1 write-barrier pre: executed before a pointer store.
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JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread))
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  if (orig == NULL) {
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    assert(false, "should be optimized out");
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    return;
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  }
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  // store the original value that was in the field reference
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  thread->satb_mark_queue().enqueue(orig);
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JRT_END
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// G1 write-barrier post: executed after a pointer store.
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JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread))
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  thread->dirty_card_queue().enqueue(card_addr);
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JRT_END
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#endif // !SERIALGC
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JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x))
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  return x * y;
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JRT_END
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JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x))
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  if (x == min_jlong && y == CONST64(-1)) {
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    return x;
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  } else {
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    return x / y;
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  }
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JRT_END
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JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x))
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  if (x == min_jlong && y == CONST64(-1)) {
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    return 0;
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  } else {
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    return x % y;
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  }
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JRT_END
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const juint  float_sign_mask  = 0x7FFFFFFF;
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const juint  float_infinity   = 0x7F800000;
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const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF);
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const julong double_infinity  = CONST64(0x7FF0000000000000);
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JRT_LEAF(jfloat, SharedRuntime::frem(jfloat  x, jfloat  y))
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#ifdef _WIN64
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  // 64-bit Windows on amd64 returns the wrong values for
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  // infinity operands.
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  union { jfloat f; juint i; } xbits, ybits;
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  xbits.f = x;
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  ybits.f = y;
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  // x Mod Infinity == x unless x is infinity
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  if ( ((xbits.i & float_sign_mask) != float_infinity) &&
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       ((ybits.i & float_sign_mask) == float_infinity) ) {
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    return x;
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  }
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#endif
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  return ((jfloat)fmod((double)x,(double)y));
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JRT_END
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JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y))
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#ifdef _WIN64
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  union { jdouble d; julong l; } xbits, ybits;
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  xbits.d = x;
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  ybits.d = y;
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  // x Mod Infinity == x unless x is infinity
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  if ( ((xbits.l & double_sign_mask) != double_infinity) &&
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       ((ybits.l & double_sign_mask) == double_infinity) ) {
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    return x;
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  }
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#endif
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  return ((jdouble)fmod((double)x,(double)y));
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JRT_END
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JRT_LEAF(jint, SharedRuntime::f2i(jfloat  x))
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  if (g_isnan(x)) {return 0;}
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  jlong lltmp = (jlong)x;
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  jint ltmp   = (jint)lltmp;
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  if (ltmp == lltmp) {
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    return ltmp;
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  } else {
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    if (x < 0) {
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      return min_jint;
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    } else {
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      return max_jint;
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    }
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  }
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JRT_END
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JRT_LEAF(jlong, SharedRuntime::f2l(jfloat  x))
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  if (g_isnan(x)) {return 0;}
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  jlong lltmp = (jlong)x;
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  if (lltmp != min_jlong) {
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    return lltmp;
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  } else {
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    if (x < 0) {
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      return min_jlong;
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    } else {
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      return max_jlong;
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    }
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  }
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JRT_END
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JRT_LEAF(jint, SharedRuntime::d2i(jdouble x))
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  if (g_isnan(x)) {return 0;}
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  jlong lltmp = (jlong)x;
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  jint ltmp   = (jint)lltmp;
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  if (ltmp == lltmp) {
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    return ltmp;
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  } else {
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    if (x < 0) {
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      return min_jint;
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    } else {
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      return max_jint;
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    }
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  }
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JRT_END
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JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x))
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  if (g_isnan(x)) {return 0;}
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  jlong lltmp = (jlong)x;
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  if (lltmp != min_jlong) {
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    return lltmp;
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  } else {
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   247
    if (x < 0) {
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   248
      return min_jlong;
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   249
    } else {
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   250
      return max_jlong;
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   251
    }
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  }
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JRT_END
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   255
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JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x))
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  return (jfloat)x;
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JRT_END
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   259
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   260
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JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x))
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  return (jfloat)x;
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JRT_END
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   264
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   265
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JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x))
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  return (jdouble)x;
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JRT_END
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   269
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// Exception handling accross interpreter/compiler boundaries
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//
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// exception_handler_for_return_address(...) returns the continuation address.
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// The continuation address is the entry point of the exception handler of the
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// previous frame depending on the return address.
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address SharedRuntime::raw_exception_handler_for_return_address(address return_address) {
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  assert(frame::verify_return_pc(return_address), "must be a return pc");
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   278
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  // the fastest case first
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  CodeBlob* blob = CodeCache::find_blob(return_address);
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  if (blob != NULL && blob->is_nmethod()) {
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    nmethod* code = (nmethod*)blob;
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    assert(code != NULL, "nmethod must be present");
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    // native nmethods don't have exception handlers
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    assert(!code->is_native_method(), "no exception handler");
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    assert(code->header_begin() != code->exception_begin(), "no exception handler");
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   287
    if (code->is_deopt_pc(return_address)) {
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   288
      return SharedRuntime::deopt_blob()->unpack_with_exception();
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    } else {
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      return code->exception_begin();
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   291
    }
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   292
  }
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   293
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  // Entry code
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   295
  if (StubRoutines::returns_to_call_stub(return_address)) {
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   296
    return StubRoutines::catch_exception_entry();
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   297
  }
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  // Interpreted code
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   299
  if (Interpreter::contains(return_address)) {
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   300
    return Interpreter::rethrow_exception_entry();
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   301
  }
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   302
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   303
  // Compiled code
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   304
  if (CodeCache::contains(return_address)) {
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   305
    CodeBlob* blob = CodeCache::find_blob(return_address);
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   306
    if (blob->is_nmethod()) {
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   307
      nmethod* code = (nmethod*)blob;
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      assert(code != NULL, "nmethod must be present");
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   309
      assert(code->header_begin() != code->exception_begin(), "no exception handler");
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      return code->exception_begin();
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   311
    }
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   312
    if (blob->is_runtime_stub()) {
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   313
      ShouldNotReachHere();   // callers are responsible for skipping runtime stub frames
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   314
    }
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   315
  }
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  guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!");
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#ifndef PRODUCT
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   318
  { ResourceMark rm;
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   319
    tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address);
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   320
    tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here");
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   321
    tty->print_cr("b) other problem");
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  }
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   323
#endif // PRODUCT
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   324
  ShouldNotReachHere();
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  return NULL;
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   326
}
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   327
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   328
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   329
JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(address return_address))
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   330
  return raw_exception_handler_for_return_address(return_address);
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   331
JRT_END
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   332
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   333
address SharedRuntime::get_poll_stub(address pc) {
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   334
  address stub;
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   335
  // Look up the code blob
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   336
  CodeBlob *cb = CodeCache::find_blob(pc);
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   337
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   338
  // Should be an nmethod
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   339
  assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" );
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   340
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   341
  // Look up the relocation information
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   342
  assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc),
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   343
    "safepoint polling: type must be poll" );
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   344
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   345
  assert( ((NativeInstruction*)pc)->is_safepoint_poll(),
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   346
    "Only polling locations are used for safepoint");
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   347
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   348
  bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc);
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   349
  if (at_poll_return) {
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   350
    assert(SharedRuntime::polling_page_return_handler_blob() != NULL,
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   351
           "polling page return stub not created yet");
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   352
    stub = SharedRuntime::polling_page_return_handler_blob()->instructions_begin();
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   353
  } else {
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   354
    assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL,
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   355
           "polling page safepoint stub not created yet");
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   356
    stub = SharedRuntime::polling_page_safepoint_handler_blob()->instructions_begin();
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   357
  }
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   358
#ifndef PRODUCT
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   359
  if( TraceSafepoint ) {
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   360
    char buf[256];
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   361
    jio_snprintf(buf, sizeof(buf),
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   362
                 "... found polling page %s exception at pc = "
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   363
                 INTPTR_FORMAT ", stub =" INTPTR_FORMAT,
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   364
                 at_poll_return ? "return" : "loop",
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   365
                 (intptr_t)pc, (intptr_t)stub);
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   366
    tty->print_raw_cr(buf);
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   367
  }
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   368
#endif // PRODUCT
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   369
  return stub;
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   370
}
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   371
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   372
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   373
oop SharedRuntime::retrieve_receiver( symbolHandle sig, frame caller ) {
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   374
  assert(caller.is_interpreted_frame(), "");
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   375
  int args_size = ArgumentSizeComputer(sig).size() + 1;
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   376
  assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack");
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   377
  oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1);
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   378
  assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop");
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   379
  return result;
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   380
}
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   381
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   382
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   383
void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) {
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   384
  if (JvmtiExport::can_post_exceptions()) {
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   385
    vframeStream vfst(thread, true);
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   386
    methodHandle method = methodHandle(thread, vfst.method());
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   387
    address bcp = method()->bcp_from(vfst.bci());
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   388
    JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception());
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   389
  }
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   390
  Exceptions::_throw(thread, __FILE__, __LINE__, h_exception);
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   391
}
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   392
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diff changeset
   393
void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, symbolOop name, const char *message) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
  Handle h_exception = Exceptions::new_exception(thread, name, message);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
  throw_and_post_jvmti_exception(thread, h_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
// ret_pc points into caller; we are returning caller's exception handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
// for given exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
                                                    bool force_unwind, bool top_frame_only) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  assert(nm != NULL, "must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  ScopeDesc* sd = nm->scope_desc_at(ret_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  // determine handler bci, if any
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
  EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
  int handler_bci = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
  int scope_depth = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  if (!force_unwind) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
    int bci = sd->bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
    do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
      bool skip_scope_increment = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
      // exception handler lookup
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
      KlassHandle ek (THREAD, exception->klass());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
      handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
      if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
        // We threw an exception while trying to find the exception handler.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
        // Transfer the new exception to the exception handle which will
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
        // be set into thread local storage, and do another lookup for an
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
        // exception handler for this exception, this time starting at the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
        // BCI of the exception handler which caused the exception to be
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
        // thrown (bugs 4307310 and 4546590). Set "exception" reference
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
        // argument to ensure that the correct exception is thrown (4870175).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
        exception = Handle(THREAD, PENDING_EXCEPTION);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
        CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
        if (handler_bci >= 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
          bci = handler_bci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
          handler_bci = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
          skip_scope_increment = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
      if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
        sd = sd->sender();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
        if (sd != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
          bci = sd->bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
        ++scope_depth;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
    } while (!top_frame_only && handler_bci < 0 && sd != NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  // found handling method => lookup exception handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  int catch_pco = ret_pc - nm->instructions_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
  ExceptionHandlerTable table(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
  HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
    // Allow abbreviated catch tables.  The idea is to allow a method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
    // to materialize its exceptions without committing to the exact
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
    // routing of exceptions.  In particular this is needed for adding
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
    // a synthethic handler to unlock monitors when inlining
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
    // synchonized methods since the unlock path isn't represented in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
    // the bytecodes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
    t = table.entry_for(catch_pco, -1, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
#ifdef COMPILER1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
  if (nm->is_compiled_by_c1() && t == NULL && handler_bci == -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
    // Exception is not handled by this frame so unwind.  Note that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
    // this is not the same as how C2 does this.  C2 emits a table
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
    // entry that dispatches to the unwind code in the nmethod.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
#endif /* COMPILER1 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
  if (t == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
    tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
    tty->print_cr("   Exception:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
    exception->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
    tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
    tty->print_cr(" Compiled exception table :");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
    table.print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
    nm->print_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
    guarantee(false, "missing exception handler");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
  return nm->instructions_begin() + t->pco();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
  // These errors occur only at call sites
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
  throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
189
4248c8e21063 6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents: 1
diff changeset
   489
JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread))
4248c8e21063 6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents: 1
diff changeset
   490
  // These errors occur only at call sites
4248c8e21063 6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents: 1
diff changeset
   491
  throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub");
4248c8e21063 6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents: 1
diff changeset
   492
JRT_END
4248c8e21063 6664627: Merge changes made only in hotspot 11 forward to jdk 7
dcubed
parents: 1
diff changeset
   493
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
  throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  // This entry point is effectively only used for NullPointerExceptions which occur at inline
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  // cache sites (when the callee activation is not yet set up) so we are at a call site
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
  throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
  // We avoid using the normal exception construction in this case because
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
  // it performs an upcall to Java, and we're already out of stack space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
  klassOop k = SystemDictionary::StackOverflowError_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
  oop exception_oop = instanceKlass::cast(k)->allocate_instance(CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
  Handle exception (thread, exception_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
  if (StackTraceInThrowable) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
    java_lang_Throwable::fill_in_stack_trace(exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
  throw_and_post_jvmti_exception(thread, exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
                                                           address pc,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
                                                           SharedRuntime::ImplicitExceptionKind exception_kind)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
  address target_pc = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
  if (Interpreter::contains(pc)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
#ifdef CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
    // C++ interpreter doesn't throw implicit exceptions
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
    ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
    switch (exception_kind) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
      case IMPLICIT_NULL:           return Interpreter::throw_NullPointerException_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
      case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
      case STACK_OVERFLOW:          return Interpreter::throw_StackOverflowError_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
      default:                      ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
#endif // !CC_INTERP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
    switch (exception_kind) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
      case STACK_OVERFLOW: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
        // Stack overflow only occurs upon frame setup; the callee is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
        // going to be unwound. Dispatch to a shared runtime stub
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
        // which will cause the StackOverflowError to be fabricated
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
        // and processed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
        // For stack overflow in deoptimization blob, cleanup thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
        if (thread->deopt_mark() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
          Deoptimization::cleanup_deopt_info(thread, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
        return StubRoutines::throw_StackOverflowError_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
      case IMPLICIT_NULL: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
        if (VtableStubs::contains(pc)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
          // We haven't yet entered the callee frame. Fabricate an
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
          // exception and begin dispatching it in the caller. Since
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
          // the caller was at a call site, it's safe to destroy all
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
          // caller-saved registers, as these entry points do.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
          VtableStub* vt_stub = VtableStubs::stub_containing(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
          guarantee(vt_stub != NULL, "unable to find SEGVing vtable stub");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
          if (vt_stub->is_abstract_method_error(pc)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
            assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
            return StubRoutines::throw_AbstractMethodError_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
          } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
            return StubRoutines::throw_NullPointerException_at_call_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
          CodeBlob* cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
          guarantee(cb != NULL, "exception happened outside interpreter, nmethods and vtable stubs (1)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
          // Exception happened in CodeCache. Must be either:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
          // 1. Inline-cache check in C2I handler blob,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
          // 2. Inline-cache check in nmethod, or
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
          // 3. Implict null exception in nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
          if (!cb->is_nmethod()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
            guarantee(cb->is_adapter_blob(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
                      "exception happened outside interpreter, nmethods and vtable stubs (2)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
            // There is no handler here, so we will simply unwind.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
            return StubRoutines::throw_NullPointerException_at_call_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
          // Otherwise, it's an nmethod.  Consult its exception handlers.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
          nmethod* nm = (nmethod*)cb;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
          if (nm->inlinecache_check_contains(pc)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
            // exception happened inside inline-cache check code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
            // => the nmethod is not yet active (i.e., the frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
            // is not set up yet) => use return address pushed by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
            // caller => don't push another return address
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
            return StubRoutines::throw_NullPointerException_at_call_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
          _implicit_null_throws++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
          target_pc = nm->continuation_for_implicit_exception(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
          guarantee(target_pc != 0, "must have a continuation point");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
        break; // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
      case IMPLICIT_DIVIDE_BY_ZERO: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
        nmethod* nm = CodeCache::find_nmethod(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
        guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
        _implicit_div0_throws++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
        target_pc = nm->continuation_for_implicit_exception(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
        guarantee(target_pc != 0, "must have a continuation point");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
        break; // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
      default: ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
    guarantee(target_pc != NULL, "must have computed destination PC for implicit exception");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
    assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
    // for AbortVMOnException flag
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
    if (exception_kind == IMPLICIT_NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
      Events::log("Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
      Events::log("Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
    return target_pc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
  ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
  THROW(vmSymbols::java_lang_UnsatisfiedLinkError());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
JNI_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
  return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
  const frame f = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
  assert(f.is_interpreted_frame(), "must be an interpreted frame");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
  methodHandle mh(THREAD, f.interpreter_frame_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
  BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
#endif // !PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
  return preserve_this_value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
#endif // !PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
  os::yield_all(attempts);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
// ---------------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
// Non-product code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
void SharedRuntime::verify_caller_frame(frame caller_frame, methodHandle callee_method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
  assert (caller_frame.is_interpreted_frame(), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
  assert (callee_method->has_compiled_code(), "callee must be compiled");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
  methodHandle caller_method (Thread::current(), caller_frame.interpreter_frame_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
  jint bci = caller_frame.interpreter_frame_bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
  methodHandle method = find_callee_method_inside_interpreter(caller_frame, caller_method, bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
  assert (callee_method == method, "incorrect method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
methodHandle SharedRuntime::find_callee_method_inside_interpreter(frame caller_frame, methodHandle caller_method, int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
  EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
  Bytecode_invoke* bytecode = Bytecode_invoke_at(caller_method, bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
  methodHandle staticCallee = bytecode->static_target(CATCH); // Non-product code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
  bytecode = Bytecode_invoke_at(caller_method, bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
  int bytecode_index = bytecode->index();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
  Bytecodes::Code bc = bytecode->adjusted_invoke_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
  Handle receiver;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
  if (bc == Bytecodes::_invokeinterface ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
      bc == Bytecodes::_invokevirtual ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
      bc == Bytecodes::_invokespecial) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
    symbolHandle signature (THREAD, staticCallee->signature());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
    receiver = Handle(THREAD, retrieve_receiver(signature, caller_frame));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
    receiver = Handle();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  CallInfo result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
  constantPoolHandle constants (THREAD, caller_method->constants());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
  LinkResolver::resolve_invoke(result, receiver, constants, bytecode_index, bc, CATCH); // Non-product code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
  methodHandle calleeMethod = result.selected_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
  return calleeMethod;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
#endif  // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  assert(obj->is_oop(), "must be a valid oop");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  instanceKlass::register_finalizer(instanceOop(obj), CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
jlong SharedRuntime::get_java_tid(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
  if (thread != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
    if (thread->is_Java_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
      oop obj = ((JavaThread*)thread)->threadObj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
      return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
/**
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
 * This function ought to be a void function, but cannot be because
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
 * it gets turned into a tail-call on sparc, which runs into dtrace bug
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
 * 6254741.  Once that is fixed we can remove the dummy return value.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
int SharedRuntime::dtrace_object_alloc(oopDesc* o) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
  return dtrace_object_alloc_base(Thread::current(), o);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
  assert(DTraceAllocProbes, "wrong call");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
  Klass* klass = o->blueprint();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
  int size = o->size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
  symbolOop name = klass->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
  HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
                   name->bytes(), name->utf8_length(), size * HeapWordSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
JRT_LEAF(int, SharedRuntime::dtrace_method_entry(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
    JavaThread* thread, methodOopDesc* method))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
  assert(DTraceMethodProbes, "wrong call");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
  symbolOop kname = method->klass_name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  symbolOop name = method->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
  symbolOop sig = method->signature();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
  HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
      kname->bytes(), kname->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
      name->bytes(), name->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
      sig->bytes(), sig->utf8_length());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
JRT_LEAF(int, SharedRuntime::dtrace_method_exit(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
    JavaThread* thread, methodOopDesc* method))
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
  assert(DTraceMethodProbes, "wrong call");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
  symbolOop kname = method->klass_name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  symbolOop name = method->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
  symbolOop sig = method->signature();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
  HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
      kname->bytes(), kname->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
      name->bytes(), name->utf8_length(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
      sig->bytes(), sig->utf8_length());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
// Finds receiver, CallInfo (i.e. receiver method), and calling bytecode)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
// for a call current in progress, i.e., arguments has been pushed on stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
// put callee has not been invoked yet.  Used by: resolve virtual/static,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
// vtable updates, etc.  Caller frame must be compiled.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
  ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
  // last java frame on stack (which includes native call frames)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
  vframeStream vfst(thread, true);  // Do not skip and javaCalls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
  return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
// Finds receiver, CallInfo (i.e. receiver method), and calling bytecode
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
// for a call current in progress, i.e., arguments has been pushed on stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
// but callee has not been invoked yet.  Caller frame must be compiled.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
Handle SharedRuntime::find_callee_info_helper(JavaThread* thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
                                              vframeStream& vfst,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
                                              Bytecodes::Code& bc,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
                                              CallInfo& callinfo, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
  Handle receiver;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
  Handle nullHandle;  //create a handy null handle for exception returns
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  assert(!vfst.at_end(), "Java frame must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
  // Find caller and bci from vframe
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
  methodHandle caller (THREAD, vfst.method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
  int          bci    = vfst.bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
  // Find bytecode
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
  Bytecode_invoke* bytecode = Bytecode_invoke_at(caller, bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
  bc = bytecode->adjusted_invoke_code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
  int bytecode_index = bytecode->index();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
  // Find receiver for non-static call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
  if (bc != Bytecodes::_invokestatic) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
    // This register map must be update since we need to find the receiver for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
    // compiled frames. The receiver might be in a register.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
    RegisterMap reg_map2(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
    frame stubFrame   = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
    // Caller-frame is a compiled frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
    frame callerFrame = stubFrame.sender(&reg_map2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
    methodHandle callee = bytecode->static_target(CHECK_(nullHandle));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
    if (callee.is_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
      THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
    // Retrieve from a compiled argument list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
    receiver = Handle(THREAD, callerFrame.retrieve_receiver(&reg_map2));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
    if (receiver.is_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
      THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
  // Resolve method. This is parameterized by bytecode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
  constantPoolHandle constants (THREAD, caller->constants());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
  assert (receiver.is_null() || receiver->is_oop(), "wrong receiver");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
  LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
  // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
  if (bc != Bytecodes::_invokestatic) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
    assert(receiver.not_null(), "should have thrown exception");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
    KlassHandle receiver_klass (THREAD, receiver->klass());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
    klassOop rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
                            // klass is already loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
    KlassHandle static_receiver_klass (THREAD, rk);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
    assert(receiver_klass->is_subtype_of(static_receiver_klass()), "actual receiver must be subclass of static receiver klass");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
    if (receiver_klass->oop_is_instance()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
      if (instanceKlass::cast(receiver_klass())->is_not_initialized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
        tty->print_cr("ERROR: Klass not yet initialized!!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
        receiver_klass.print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
      assert (!instanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
  return receiver;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
  ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
  // We need first to check if any Java activations (compiled, interpreted)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
  // exist on the stack since last JavaCall.  If not, we need
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
  // to get the target method from the JavaCall wrapper.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
  vframeStream vfst(thread, true);  // Do not skip any javaCalls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
  methodHandle callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
  if (vfst.at_end()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
    // No Java frames were found on stack since we did the JavaCall.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
    // Hence the stack can only contain an entry_frame.  We need to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
    // find the target method from the stub frame.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
    RegisterMap reg_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
    frame fr = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
    assert(fr.is_runtime_frame(), "must be a runtimeStub");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
    fr = fr.sender(&reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
    assert(fr.is_entry_frame(), "must be");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
    // fr is now pointing to the entry frame.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
    callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
    assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
    Bytecodes::Code bc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
    CallInfo callinfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
    find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
    callee_method = callinfo.selected_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
  assert(callee_method()->is_method(), "must be");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
  return callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
// Resolves a call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
methodHandle SharedRuntime::resolve_helper(JavaThread *thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
                                           bool is_virtual,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
                                           bool is_optimized, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
  methodHandle callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
  callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
  if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
    int retry_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
    while (!HAS_PENDING_EXCEPTION && callee_method->is_old() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
           callee_method->method_holder() != SystemDictionary::object_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
      // If has a pending exception then there is no need to re-try to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
      // resolve this method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
      // If the method has been redefined, we need to try again.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
      // Hack: we have no way to update the vtables of arrays, so don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
      // require that java.lang.Object has been updated.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
      // It is very unlikely that method is redefined more than 100 times
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
      // in the middle of resolve. If it is looping here more than 100 times
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
      // means then there could be a bug here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
      guarantee((retry_count++ < 100),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
                "Could not resolve to latest version of redefined method");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
      // method is redefined in the middle of resolve so re-try.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
      callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
  return callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
// Resolves a call.  The compilers generate code for calls that go here
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
// and are patched with the real destination of the call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
                                           bool is_virtual,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
                                           bool is_optimized, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
  ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
  RegisterMap cbl_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
  frame caller_frame = thread->last_frame().sender(&cbl_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
  CodeBlob* cb = caller_frame.cb();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
  guarantee(cb != NULL && cb->is_nmethod(), "must be called from nmethod");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
  // make sure caller is not getting deoptimized
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
  // and removed before we are done with it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
  // CLEANUP - with lazy deopt shouldn't need this lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
  nmethodLocker caller_lock((nmethod*)cb);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
  // determine call info & receiver
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
  // note: a) receiver is NULL for static calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
  //       b) an exception is thrown if receiver is NULL for non-static calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
  CallInfo call_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
  Bytecodes::Code invoke_code = Bytecodes::_illegal;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
  Handle receiver = find_callee_info(thread, invoke_code,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
                                     call_info, CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
  methodHandle callee_method = call_info.selected_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
  assert((!is_virtual && invoke_code == Bytecodes::_invokestatic) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
         ( is_virtual && invoke_code != Bytecodes::_invokestatic), "inconsistent bytecode");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
  // tracing/debugging/statistics
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
  int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) :
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
                (is_virtual) ? (&_resolve_virtual_ctr) :
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
                               (&_resolve_static_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
  Atomic::inc(addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
  if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
    ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
    tty->print("resolving %s%s (%s) call to",
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
      (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static",
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
      Bytecodes::name(invoke_code));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
    callee_method->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
    tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
  // Compute entry points. This might require generation of C2I converter
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
  // frames, so we cannot be holding any locks here. Furthermore, the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
  // computation of the entry points is independent of patching the call.  We
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
  // always return the entry-point, but we only patch the stub if the call has
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
  // not been deoptimized.  Return values: For a virtual call this is an
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
  // (cached_oop, destination address) pair. For a static call/optimized
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
  // virtual this is just a destination address.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
  StaticCallInfo static_call_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
  CompiledICInfo virtual_call_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
  // Make sure the callee nmethod does not get deoptimized and removed before
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
  // we are done patching the code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
  nmethod* nm = callee_method->code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
  nmethodLocker nl_callee(nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
  address dest_entry_point = nm == NULL ? 0 : nm->entry_point(); // used below
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
  if (is_virtual) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
    assert(receiver.not_null(), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
    bool static_bound = call_info.resolved_method()->can_be_statically_bound();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
    KlassHandle h_klass(THREAD, receiver->klass());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
    CompiledIC::compute_monomorphic_entry(callee_method, h_klass,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
                     is_optimized, static_bound, virtual_call_info,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
                     CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
    // static call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
    CompiledStaticCall::compute_entry(callee_method, static_call_info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
  // grab lock, check for deoptimization and potentially patch caller
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
    MutexLocker ml_patch(CompiledIC_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
    // Now that we are ready to patch if the methodOop was redefined then
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
    // don't update call site and let the caller retry.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
    if (!callee_method->is_old()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
      // We must not try to patch to jump to an already unloaded method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
      if (dest_entry_point != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
        assert(CodeCache::find_blob(dest_entry_point) != NULL,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
               "should not unload nmethod while locked");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
      if (is_virtual) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
        CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
        if (inline_cache->is_clean()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
          inline_cache->set_to_monomorphic(virtual_call_info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
        CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
        if (ssc->is_clean()) ssc->set(static_call_info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
  } // unlock CompiledIC_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
  return callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
// Inline caches exist only in compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
  RegisterMap reg_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
  frame stub_frame = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
  assert(stub_frame.is_runtime_frame(), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
  frame caller_frame = stub_frame.sender(&reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
  assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
#endif /* ASSERT */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
  methodHandle callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
  JRT_BLOCK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
    callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
    // Return methodOop through TLS
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
    thread->set_vm_result(callee_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
  JRT_BLOCK_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
  // return compiled code entry point after potential safepoints
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
  assert(callee_method->verified_code_entry() != NULL, " Jump to zero!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
  return callee_method->verified_code_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
// Handle call site that has been made non-entrant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
  // 6243940 We might end up in here if the callee is deoptimized
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
  // as we race to call it.  We don't want to take a safepoint if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
  // the caller was interpreted because the caller frame will look
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
  // interpreted to the stack walkers and arguments are now
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
  // "compiled" so it is much better to make this transition
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
  // invisible to the stack walking code. The i2c path will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
  // place the callee method in the callee_target. It is stashed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
  // there because if we try and find the callee by normal means a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
  // safepoint is possible and have trouble gc'ing the compiled args.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
  RegisterMap reg_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
  frame stub_frame = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
  assert(stub_frame.is_runtime_frame(), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
  frame caller_frame = stub_frame.sender(&reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
  if (caller_frame.is_interpreted_frame() || caller_frame.is_entry_frame() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
    methodOop callee = thread->callee_target();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
    guarantee(callee != NULL && callee->is_method(), "bad handshake");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
    thread->set_vm_result(callee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
    thread->set_callee_target(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
    return callee->get_c2i_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
  // Must be compiled to compiled path which is safe to stackwalk
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
  methodHandle callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
  JRT_BLOCK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
    // Force resolving of caller (if we called from compiled frame)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
    callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
    thread->set_vm_result(callee_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
  JRT_BLOCK_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
  // return compiled code entry point after potential safepoints
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
  assert(callee_method->verified_code_entry() != NULL, " Jump to zero!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
  return callee_method->verified_code_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
// resolve a static call and patch code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread ))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
  methodHandle callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
  JRT_BLOCK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
    callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
    thread->set_vm_result(callee_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
  JRT_BLOCK_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
  // return compiled code entry point after potential safepoints
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
  assert(callee_method->verified_code_entry() != NULL, " Jump to zero!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
  return callee_method->verified_code_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
// resolve virtual call and update inline cache to monomorphic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread ))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
  methodHandle callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
  JRT_BLOCK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
    callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
    thread->set_vm_result(callee_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
  JRT_BLOCK_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
  // return compiled code entry point after potential safepoints
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
  assert(callee_method->verified_code_entry() != NULL, " Jump to zero!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
  return callee_method->verified_code_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
// Resolve a virtual call that can be statically bound (e.g., always
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
// monomorphic, so it has no inline cache).  Patch code to resolved target.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
  methodHandle callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
  JRT_BLOCK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
    callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
    thread->set_vm_result(callee_method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
  JRT_BLOCK_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
  // return compiled code entry point after potential safepoints
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
  assert(callee_method->verified_code_entry() != NULL, " Jump to zero!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
  return callee_method->verified_code_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
  ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
  CallInfo call_info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
  Bytecodes::Code bc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
  // receiver is NULL for static calls. An exception is thrown for NULL
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
  // receivers for non-static calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
  Handle receiver = find_callee_info(thread, bc, call_info,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
                                     CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
  // Compiler1 can produce virtual call sites that can actually be statically bound
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
  // If we fell thru to below we would think that the site was going megamorphic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
  // when in fact the site can never miss. Worse because we'd think it was megamorphic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
  // we'd try and do a vtable dispatch however methods that can be statically bound
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
  // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
  // reresolution of the  call site (as if we did a handle_wrong_method and not an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
  // plain ic_miss) and the site will be converted to an optimized virtual call site
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
  // never to miss again. I don't believe C2 will produce code like this but if it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
  // did this would still be the correct thing to do for it too, hence no ifdef.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
  if (call_info.resolved_method()->can_be_statically_bound()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
    methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
    if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
      RegisterMap reg_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
      frame caller_frame = thread->last_frame().sender(&reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
      ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
      tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
      callee_method->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
      tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
      tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
    return callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
  methodHandle callee_method = call_info.selected_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
  bool should_be_mono = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
  Atomic::inc(&_ic_miss_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
  // Statistics & Tracing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
  if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
    ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
    tty->print("IC miss (%s) call to", Bytecodes::name(bc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
    callee_method->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
    tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
  if (ICMissHistogram) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
    MutexLocker m(VMStatistic_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
    RegisterMap reg_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
    frame f = thread->last_frame().real_sender(&reg_map);// skip runtime stub
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
    // produce statistics under the lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
    trace_ic_miss(f.pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
  // install an event collector so that when a vtable stub is created the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
  // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
  // event can't be posted when the stub is created as locks are held
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
  // - instead the event will be deferred until the event collector goes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
  // out of scope.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
  JvmtiDynamicCodeEventCollector event_collector;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
  // Update inline cache to megamorphic. Skip update if caller has been
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
  // made non-entrant or we are called from interpreted.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
  { MutexLocker ml_patch (CompiledIC_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
    RegisterMap reg_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
    frame caller_frame = thread->last_frame().sender(&reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
    CodeBlob* cb = caller_frame.cb();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
    if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
      // Not a non-entrant nmethod, so find inline_cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
      CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
      bool should_be_mono = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
      if (inline_cache->is_optimized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
        if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
          ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
          tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
          callee_method->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
          tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
        should_be_mono = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
        compiledICHolderOop ic_oop = (compiledICHolderOop) inline_cache->cached_oop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
        if ( ic_oop != NULL && ic_oop->is_compiledICHolder()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
          if (receiver()->klass() == ic_oop->holder_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
            // This isn't a real miss. We must have seen that compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
            // is now available and we want the call site converted to a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
            // monomorphic compiled call site.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
            // We can't assert for callee_method->code() != NULL because it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
            // could have been deoptimized in the meantime
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
            if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
              ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
              tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
              callee_method->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
              tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
            should_be_mono = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
      if (should_be_mono) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
        // We have a path that was monomorphic but was going interpreted
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
        // and now we have (or had) a compiled entry. We correct the IC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
        // by using a new icBuffer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
        CompiledICInfo info;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
        KlassHandle receiver_klass(THREAD, receiver()->klass());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
        inline_cache->compute_monomorphic_entry(callee_method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
                                                receiver_klass,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
                                                inline_cache->is_optimized(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
                                                false,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
                                                info, CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
        inline_cache->set_to_monomorphic(info);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
      } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
        // Change to megamorphic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
        inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
        // Either clean or megamorphic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
  } // Release CompiledIC_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
  return callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
// Resets a call-site in compiled code so it will get resolved again.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
// This routines handles both virtual call sites, optimized virtual call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
// sites, and static call sites. Typically used to change a call sites
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
// destination from compiled to interpreted.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
  ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
  RegisterMap reg_map(thread, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
  frame stub_frame = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
  assert(stub_frame.is_runtime_frame(), "must be a runtimeStub");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
  frame caller = stub_frame.sender(&reg_map);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1262
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
  // Do nothing if the frame isn't a live compiled frame.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1264
  // nmethod could be deoptimized by the time we get here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
  // so no update to the caller is needed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1266
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1267
  if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
    address pc = caller.pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1270
    Events::log("update call-site at pc " INTPTR_FORMAT, pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1271
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1272
    // Default call_addr is the location of the "basic" call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1273
    // Determine the address of the call we a reresolving. With
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1274
    // Inline Caches we will always find a recognizable call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1275
    // With Inline Caches disabled we may or may not find a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1276
    // recognizable call. We will always find a call for static
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1277
    // calls and for optimized virtual calls. For vanilla virtual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1278
    // calls it depends on the state of the UseInlineCaches switch.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
    // With Inline Caches disabled we can get here for a virtual call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1281
    // for two reasons:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
    //   1 - calling an abstract method. The vtable for abstract methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1283
    //       will run us thru handle_wrong_method and we will eventually
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1284
    //       end up in the interpreter to throw the ame.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1285
    //   2 - a racing deoptimization. We could be doing a vanilla vtable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
    //       call and between the time we fetch the entry address and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
    //       we jump to it the target gets deoptimized. Similar to 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
    //       we will wind up in the interprter (thru a c2i with c2).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
    address call_addr = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
      // Get call instruction under lock because another thread may be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
      // busy patching it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
      MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1295
      // Location of call instruction
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
      if (NativeCall::is_call_before(pc)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
        NativeCall *ncall = nativeCall_before(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
        call_addr = ncall->instruction_address();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
    // Check for static or virtual call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
    bool is_static_call = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
    nmethod* caller_nm = CodeCache::find_nmethod(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
    // Make sure nmethod doesn't get deoptimized and removed until
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
    // this is done with it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
    // CLEANUP - with lazy deopt shouldn't need this lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
    nmethodLocker nmlock(caller_nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
    if (call_addr != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
      RelocIterator iter(caller_nm, call_addr, call_addr+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
      int ret = iter.next(); // Get item
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
      if (ret) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
        assert(iter.addr() == call_addr, "must find call");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
        if (iter.type() == relocInfo::static_call_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
          is_static_call = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1318
          assert(iter.type() == relocInfo::virtual_call_type ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1319
                 iter.type() == relocInfo::opt_virtual_call_type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1320
                , "unexpected relocInfo. type");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1321
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1322
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1323
        assert(!UseInlineCaches, "relocation info. must exist for this address");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
      // Cleaning the inline cache will force a new resolve. This is more robust
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
      // than directly setting it to the new destination, since resolving of calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
      // is always done through the same code path. (experience shows that it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
      // leads to very hard to track down bugs, if an inline cache gets updated
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
      // to a wrong method). It should not be performance critical, since the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
      // resolve is only done once.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
      MutexLocker ml(CompiledIC_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
      // We do not patch the call site if the nmethod has been made non-entrant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
      // as it is a waste of time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
      if (caller_nm->is_in_use()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
        if (is_static_call) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
          CompiledStaticCall* ssc= compiledStaticCall_at(call_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
          ssc->set_to_clean();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
          // compiled, dispatched call (which used to call an interpreted method)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
          CompiledIC* inline_cache = CompiledIC_at(call_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
          inline_cache->set_to_clean();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
  methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
  Atomic::inc(&_wrong_method_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
  if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
    ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
    tty->print("handle_wrong_method reresolving call to");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
    callee_method->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
    tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
  return callee_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
// ---------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
// We are calling the interpreter via a c2i. Normally this would mean that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1371
// we were called by a compiled method. However we could have lost a race
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
// where we went int -> i2c -> c2i and so the caller could in fact be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
// interpreted. If the caller is compiled we attampt to patch the caller
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
// so he no longer calls into the interpreter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(methodOopDesc* method, address caller_pc))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1376
  methodOop moop(method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1377
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
  address entry_point = moop->from_compiled_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
  // It's possible that deoptimization can occur at a call site which hasn't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
  // been resolved yet, in which case this function will be called from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
  // an nmethod that has been patched for deopt and we can ignore the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
  // request for a fixup.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
  // Also it is possible that we lost a race in that from_compiled_entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
  // is now back to the i2c in that case we don't need to patch and if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
  // we did we'd leap into space because the callsite needs to use
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
  // "to interpreter" stub in order to load up the methodOop. Don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
  // ask me how I know this...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
  CodeBlob* cb = CodeCache::find_blob(caller_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
  if ( !cb->is_nmethod() || entry_point == moop->get_c2i_entry()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
  // There is a benign race here. We could be attempting to patch to a compiled
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1397
  // entry point at the same time the callee is being deoptimized. If that is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1398
  // the case then entry_point may in fact point to a c2i and we'd patch the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1399
  // call site with the same old data. clear_code will set code() to NULL
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1400
  // at the end of it. If we happen to see that NULL then we can skip trying
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1401
  // to patch. If we hit the window where the callee has a c2i in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
  // from_compiled_entry and the NULL isn't present yet then we lose the race
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
  // and patch the code with the same old data. Asi es la vida.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
  if (moop->code() == NULL) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
  if (((nmethod*)cb)->is_in_use()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
    // Expect to find a native call there (unless it was no-inline cache vtable dispatch)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
    MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
    if (NativeCall::is_call_before(caller_pc + frame::pc_return_offset)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
      NativeCall *call = nativeCall_before(caller_pc + frame::pc_return_offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
      // bug 6281185. We might get here after resolving a call site to a vanilla
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
      // virtual call. Because the resolvee uses the verified entry it may then
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
      // see compiled code and attempt to patch the site by calling us. This would
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
      // then incorrectly convert the call site to optimized and its downhill from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
      // there. If you're lucky you'll get the assert in the bugid, if not you've
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
      // just made a call site that could be megamorphic into a monomorphic site
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
      // for the rest of its life! Just another racing bug in the life of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
      // fixup_callers_callsite ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
      RelocIterator iter(cb, call->instruction_address(), call->next_instruction_address());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
      iter.next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
      assert(iter.has_current(), "must have a reloc at java call site");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
      relocInfo::relocType typ = iter.reloc()->type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
      if ( typ != relocInfo::static_call_type &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
           typ != relocInfo::opt_virtual_call_type &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
           typ != relocInfo::static_stub_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1430
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
      address destination = call->destination();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
      if (destination != entry_point) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
        CodeBlob* callee = CodeCache::find_blob(destination);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1435
        // callee == cb seems weird. It means calling interpreter thru stub.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1436
        if (callee == cb || callee->is_adapter_blob()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1437
          // static call or optimized virtual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
          if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
            tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
            moop->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
            tty->print_cr(" to " INTPTR_FORMAT, entry_point);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
          call->set_destination_mt_safe(entry_point);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
          if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
            tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
            moop->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
            tty->print_cr(" to " INTPTR_FORMAT, entry_point);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
          // assert is too strong could also be resolve destinations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
          // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
          if (TraceCallFixup) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
            tty->print("already patched  callsite at " INTPTR_FORMAT " to compiled code for", caller_pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
            moop->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
            tty->print_cr(" to " INTPTR_FORMAT, entry_point);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
IRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
// same as JVM_Arraycopy, but called directly from compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src,  jint src_pos,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
                                                oopDesc* dest, jint dest_pos,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
                                                jint length,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
                                                JavaThread* thread)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
  _slow_array_copy_ctr++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
  // Check if we have null pointers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
  if (src == NULL || dest == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
    THROW(vmSymbols::java_lang_NullPointerException());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
  // Do the copy.  The casts to arrayOop are necessary to the copy_array API,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
  // even though the copy_array API also performs dynamic checks to ensure
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1480
  // that src and dest are truly arrays (and are conformable).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
  // The copy_array mechanism is awkward and could be removed, but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
  // the compilers don't call this function except as a last resort,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
  // so it probably doesn't matter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
  Klass::cast(src->klass())->copy_array((arrayOopDesc*)src,  src_pos,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
                                        (arrayOopDesc*)dest, dest_pos,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
                                        length, thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1487
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
char* SharedRuntime::generate_class_cast_message(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
    JavaThread* thread, const char* objName) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
  // Get target class name from the checkcast instruction
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
  vframeStream vfst(thread, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1495
  assert(!vfst.at_end(), "Java frame must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
  Bytecode_checkcast* cc = Bytecode_checkcast_at(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
    vfst.method()->bcp_from(vfst.bci()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
  Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
    cc->index(), thread));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
  return generate_class_cast_message(objName, targetKlass->external_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
char* SharedRuntime::generate_class_cast_message(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
    const char* objName, const char* targetKlassName) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
  const char* desc = " cannot be cast to ";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
  size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
226
e4a3ef4b2665 6631248: Memory problem when doing invalid type cast
kamg
parents: 1
diff changeset
  1508
  char* message = NEW_RESOURCE_ARRAY(char, msglen);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1509
  if (NULL == message) {
226
e4a3ef4b2665 6631248: Memory problem when doing invalid type cast
kamg
parents: 1
diff changeset
  1510
    // Shouldn't happen, but don't cause even more problems if it does
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1511
    message = const_cast<char*>(objName);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1512
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1513
    jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
  return message;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
JRT_LEAF(void, SharedRuntime::reguard_yellow_pages())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
  (void) JavaThread::current()->reguard_stack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1521
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1523
// Handles the uncommon case in locking, i.e., contention or an inflated lock.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
int SharedRuntime::_monitor_enter_ctr=0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1526
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1528
  oop obj(_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
  _monitor_enter_ctr++;             // monitor enter slow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
  if (PrintBiasedLockingStatistics) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
    Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
  Handle h_obj(THREAD, obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
  if (UseBiasedLocking) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
    // Retry fast entry if bias is revoked to avoid unnecessary inflation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
    ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
    ObjectSynchronizer::slow_enter(h_obj, lock, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
  assert(!HAS_PENDING_EXCEPTION, "Should have no exception here");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
int SharedRuntime::_monitor_exit_ctr=0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
// Handles the uncommon cases of monitor unlocking in compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
   oop obj(_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
  _monitor_exit_ctr++;              // monitor exit slow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
  Thread* THREAD = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
  // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
  // testing was unable to ever fire the assert that guarded it so I have removed it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
  assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
#undef MIGHT_HAVE_PENDING
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
#ifdef MIGHT_HAVE_PENDING
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1560
  // Save and restore any pending_exception around the exception mark.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
  // While the slow_exit must not throw an exception, we could come into
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
  // this routine with one set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
  oop pending_excep = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
  const char* pending_file;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
  int pending_line;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
  if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
    pending_excep = PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
    pending_file  = THREAD->exception_file();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
    pending_line  = THREAD->exception_line();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
    CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
#endif /* MIGHT_HAVE_PENDING */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
    // Exit must be non-blocking, and therefore no exceptions can be thrown.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
    EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
    ObjectSynchronizer::slow_exit(obj, lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
#ifdef MIGHT_HAVE_PENDING
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
  if (pending_excep != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
    THREAD->set_pending_exception(pending_excep, pending_file, pending_line);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
#endif /* MIGHT_HAVE_PENDING */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
void SharedRuntime::print_statistics() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
  ttyLocker ttyl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
  if (xtty != NULL)  xtty->head("statistics type='SharedRuntime'");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
  if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow",  _monitor_enter_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
  if (_monitor_exit_ctr  ) tty->print_cr("%5d monitor exit slow",   _monitor_exit_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
  if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
  SharedRuntime::print_ic_miss_histogram();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
  if (CountRemovableExceptions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
    if (_nof_removable_exceptions > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
      Unimplemented(); // this counter is not yet incremented
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
      tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
  // Dump the JRT_ENTRY counters
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
  if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
  if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
  if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
  if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
  if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
  if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
  if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
  tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
  tty->print_cr("%5d wrong method", _wrong_method_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
  tty->print_cr("%5d unresolved static call site", _resolve_static_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
  tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
  tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1620
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1621
  if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
  if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
  if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
  if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
  if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
  if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
  if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
  if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
  if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
  if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
  if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
  if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
  if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
  if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
  if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
  if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
  if (xtty != NULL)  xtty->tail("statistics");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
inline double percent(int x, int y) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
  return 100.0 * x / MAX2(y, 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
class MethodArityHistogram {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
  enum { MAX_ARITY = 256 };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
  static int _arity_histogram[MAX_ARITY];     // histogram of #args
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
  static int _size_histogram[MAX_ARITY];      // histogram of arg size in words
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1651
  static int _max_arity;                      // max. arity seen
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
  static int _max_size;                       // max. arg size seen
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
  static void add_method_to_histogram(nmethod* nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
    methodOop m = nm->method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
    ArgumentCount args(m->signature());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
    int arity   = args.size() + (m->is_static() ? 0 : 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
    int argsize = m->size_of_parameters();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
    arity   = MIN2(arity, MAX_ARITY-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
    argsize = MIN2(argsize, MAX_ARITY-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
    int count = nm->method()->compiled_invocation_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
    _arity_histogram[arity]  += count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
    _size_histogram[argsize] += count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
    _max_arity = MAX2(_max_arity, arity);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
    _max_size  = MAX2(_max_size, argsize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
  void print_histogram_helper(int n, int* histo, const char* name) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
    const int N = MIN2(5, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
    tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
    double sum = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1672
    double weighted_sum = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1673
    int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1674
    for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1675
    double rest = sum;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
    double percent = sum / 100;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
    for (i = 0; i <= N; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
      rest -= histo[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
      tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
    tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
    tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
  void print_histogram() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
    tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
    print_histogram_helper(_max_arity, _arity_histogram, "arity");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
    tty->print_cr("\nSame for parameter size (in words):");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1689
    print_histogram_helper(_max_size, _size_histogram, "size");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
    tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
  MethodArityHistogram() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
    MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
    _max_arity = _max_size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
    for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
    CodeCache::nmethods_do(add_method_to_histogram);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
    print_histogram();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1703
int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1704
int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1705
int MethodArityHistogram::_max_arity;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1706
int MethodArityHistogram::_max_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1707
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
void SharedRuntime::print_call_statistics(int comp_total) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
  tty->print_cr("Calls from compiled code:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1710
  int total  = _nof_normal_calls + _nof_interface_calls + _nof_static_calls;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
  int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
  int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
  tty->print_cr("\t%9d   (%4.1f%%) total non-inlined   ", total, percent(total, total));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
  tty->print_cr("\t%9d   (%4.1f%%) virtual calls       ", _nof_normal_calls, percent(_nof_normal_calls, total));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
  tty->print_cr("\t  %9d  (%3.0f%%)   inlined          ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
  tty->print_cr("\t  %9d  (%3.0f%%)   optimized        ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
  tty->print_cr("\t  %9d  (%3.0f%%)   monomorphic      ", mono_c, percent(mono_c, _nof_normal_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
  tty->print_cr("\t  %9d  (%3.0f%%)   megamorphic      ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
  tty->print_cr("\t%9d   (%4.1f%%) interface calls     ", _nof_interface_calls, percent(_nof_interface_calls, total));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
  tty->print_cr("\t  %9d  (%3.0f%%)   inlined          ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
  tty->print_cr("\t  %9d  (%3.0f%%)   optimized        ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
  tty->print_cr("\t  %9d  (%3.0f%%)   monomorphic      ", mono_i, percent(mono_i, _nof_interface_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
  tty->print_cr("\t  %9d  (%3.0f%%)   megamorphic      ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
  tty->print_cr("\t%9d   (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
  tty->print_cr("\t  %9d  (%3.0f%%)   inlined          ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
  tty->print_cr("Note 1: counter updates are not MT-safe.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
  tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
  tty->print_cr("        %% in nested categories are relative to their category");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
  tty->print_cr("        (and thus add up to more than 100%% with inlining)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
  MethodArityHistogram h;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
// ---------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
// Implementation of AdapterHandlerLibrary
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
const char* AdapterHandlerEntry::name = "I2C/C2I adapters";
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
GrowableArray<uint64_t>* AdapterHandlerLibrary::_fingerprints = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
GrowableArray<AdapterHandlerEntry* >* AdapterHandlerLibrary::_handlers = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
const int AdapterHandlerLibrary_size = 16*K;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
u_char                   AdapterHandlerLibrary::_buffer[AdapterHandlerLibrary_size + 32];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
void AdapterHandlerLibrary::initialize() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
  if (_fingerprints != NULL) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
  _fingerprints = new(ResourceObj::C_HEAP)GrowableArray<uint64_t>(32, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
  _handlers = new(ResourceObj::C_HEAP)GrowableArray<AdapterHandlerEntry*>(32, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
  // Index 0 reserved for the slow path handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
  _fingerprints->append(0/*the never-allowed 0 fingerprint*/);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
  _handlers->append(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
  // Create a special handler for abstract methods.  Abstract methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
  // are never compiled so an i2c entry is somewhat meaningless, but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
  // fill it in with something appropriate just in case.  Pass handle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
  // wrong method for the c2i transitions.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
  address wrong_method = SharedRuntime::get_handle_wrong_method_stub();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
  _fingerprints->append(0/*the never-allowed 0 fingerprint*/);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
  assert(_handlers->length() == AbstractMethodHandler, "in wrong slot");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
  _handlers->append(new AdapterHandlerEntry(StubRoutines::throw_AbstractMethodError_entry(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
                                            wrong_method, wrong_method));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
int AdapterHandlerLibrary::get_create_adapter_index(methodHandle method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
  // Use customized signature handler.  Need to lock around updates to the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
  // _fingerprints array (it is not safe for concurrent readers and a single
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
  // writer: this can be fixed if it becomes a problem).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
  // Get the address of the ic_miss handlers before we grab the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
  // AdapterHandlerLibrary_lock. This fixes bug 6236259 which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
  // was caused by the initialization of the stubs happening
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
  // while we held the lock and then notifying jvmti while
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
  // holding it. This just forces the initialization to be a little
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
  // earlier.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
  address ic_miss = SharedRuntime::get_ic_miss_stub();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
  assert(ic_miss != NULL, "must have handler");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
  int result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
  BufferBlob *B = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
  uint64_t fingerprint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
    MutexLocker mu(AdapterHandlerLibrary_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1784
    // make sure data structure is initialized
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1785
    initialize();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
    if (method->is_abstract()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
      return AbstractMethodHandler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
    // Lookup method signature's fingerprint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
    fingerprint = Fingerprinter(method).fingerprint();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
    assert( fingerprint != CONST64( 0), "no zero fingerprints allowed" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1794
    // Fingerprints are small fixed-size condensed representations of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1795
    // signatures.  If the signature is too large, it won't fit in a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
    // fingerprint.  Signatures which cannot support a fingerprint get a new i2c
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
    // adapter gen'd each time, instead of searching the cache for one.  This -1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
    // game can be avoided if I compared signatures instead of using
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
    // fingerprints.  However, -1 fingerprints are very rare.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
    if( fingerprint != UCONST64(-1) ) { // If this is a cache-able fingerprint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
      // Turns out i2c adapters do not care what the return value is.  Mask it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
      // out so signatures that only differ in return type will share the same
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
      // adapter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1804
      fingerprint &= ~(SignatureIterator::result_feature_mask << SignatureIterator::static_feature_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1805
      // Search for a prior existing i2c/c2i adapter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
      int index = _fingerprints->find(fingerprint);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
      if( index >= 0 ) return index; // Found existing handlers?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
      // Annoyingly, I end up adding -1 fingerprints to the array of handlers,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
      // because I need a unique handler index.  It cannot be scanned for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
      // because all -1's look alike.  Instead, the matching index is passed out
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
      // and immediately used to collect the 2 return values (the c2i and i2c
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
      // adapters).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
    // Create I2C & C2I handlers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
    ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
    // Improve alignment slightly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
    u_char *buf = (u_char*)(((intptr_t)_buffer + CodeEntryAlignment-1) & ~(CodeEntryAlignment-1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
    CodeBuffer buffer(buf, AdapterHandlerLibrary_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
    short buffer_locs[20];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
    buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
                                           sizeof(buffer_locs)/sizeof(relocInfo));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
    MacroAssembler _masm(&buffer);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
    // Fill in the signature array, for the calling-convention call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
    int total_args_passed = method->size_of_parameters(); // All args on stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
    BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
    VMRegPair  * regs   = NEW_RESOURCE_ARRAY(VMRegPair  ,total_args_passed);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
    int i=0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
    if( !method->is_static() )  // Pass in receiver first
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
      sig_bt[i++] = T_OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
    for( SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
      sig_bt[i++] = ss.type();  // Collect remaining bits of signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
      if( ss.type() == T_LONG || ss.type() == T_DOUBLE )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
        sig_bt[i++] = T_VOID;   // Longs & doubles take 2 Java slots
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
    assert( i==total_args_passed, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
    // Now get the re-packed compiled-Java layout.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
    int comp_args_on_stack;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
    // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
    comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
    AdapterHandlerEntry* entry = SharedRuntime::generate_i2c2i_adapters(&_masm,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
                                                                        total_args_passed,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
                                                                        comp_args_on_stack,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
                                                                        sig_bt,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
                                                                        regs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
    B = BufferBlob::create(AdapterHandlerEntry::name, &buffer);
201
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1854
    if (B == NULL) {
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1855
      // CodeCache is full, disable compilation
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1856
      // Ought to log this but compile log is only per compile thread
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1857
      // and we're some non descript Java thread.
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1858
      UseInterpreter = true;
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1859
      if (UseCompiler || AlwaysCompileLoopMethods ) {
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1860
#ifndef PRODUCT
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1861
        warning("CodeCache is full. Compiler has been disabled");
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1862
        if (CompileTheWorld || ExitOnFullCodeCache) {
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1863
          before_exit(JavaThread::current());
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1864
          exit_globals(); // will delete tty
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1865
          vm_direct_exit(CompileTheWorld ? 0 : 1);
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1866
        }
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1867
#endif
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1868
        UseCompiler               = false;
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1869
        AlwaysCompileLoopMethods  = false;
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1870
      }
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1871
      return 0; // Out of CodeCache space (_handlers[0] == NULL)
7893b7ce2d8d 6650373: Assert in methodOopDesc::make_adapters()
kvn
parents: 189
diff changeset
  1872
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
    entry->relocate(B->instructions_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
    // debugging suppport
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
    if (PrintAdapterHandlers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
      tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
      tty->print_cr("i2c argument handler #%d for: %s %s (fingerprint = 0x%llx, %d bytes generated)",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
                    _handlers->length(), (method->is_static() ? "static" : "receiver"),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
                    method->signature()->as_C_string(), fingerprint, buffer.code_size() );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
      tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
      Disassembler::decode(entry->get_i2c_entry(), entry->get_i2c_entry() + buffer.code_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
    // add handlers to library
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
    _fingerprints->append(fingerprint);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
    _handlers->append(entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
    // set handler index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
    assert(_fingerprints->length() == _handlers->length(), "sanity check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
    result = _fingerprints->length() - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
  // Outside of the lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
  if (B != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
    char blob_id[256];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
    jio_snprintf(blob_id,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
                 sizeof(blob_id),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
                 "%s(" PTR64_FORMAT ")@" PTR_FORMAT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
                 AdapterHandlerEntry::name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
                 fingerprint,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
                 B->instructions_begin());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
    VTune::register_stub(blob_id, B->instructions_begin(), B->instructions_end());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
    Forte::register_stub(blob_id, B->instructions_begin(), B->instructions_end());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
    if (JvmtiExport::should_post_dynamic_code_generated()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
      JvmtiExport::post_dynamic_code_generated(blob_id,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
                                               B->instructions_begin(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
                                               B->instructions_end());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
void AdapterHandlerEntry::relocate(address new_base) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
    ptrdiff_t delta = new_base - _i2c_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
    _i2c_entry += delta;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1917
    _c2i_entry += delta;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1918
    _c2i_unverified_entry += delta;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1920
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
// Create a native wrapper for this native method.  The wrapper converts the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
// java compiled calling convention to the native convention, handlizes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
// arguments, and transitions to native.  On return from the native we transition
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
// back to java blocking if a safepoint is in progress.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
  ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
  nmethod* nm = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
  if (PrintCompilation) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
    ttyLocker ttyl;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
    tty->print("---   n%s ", (method->is_synchronized() ? "s" : " "));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
    method->print_short_name(tty);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
    if (method->is_static()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1934
      tty->print(" (static)");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
    tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
  assert(method->has_native_function(), "must have something valid to call!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
    // perform the work while holding the lock, but perform any printing outside the lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
    MutexLocker mu(AdapterHandlerLibrary_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
    // See if somebody beat us to it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
    nm = method->code();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
    if (nm) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
      return nm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
    // Improve alignment slightly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
    u_char* buf = (u_char*)(((intptr_t)_buffer + CodeEntryAlignment-1) & ~(CodeEntryAlignment-1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
    CodeBuffer buffer(buf, AdapterHandlerLibrary_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
    // Need a few relocation entries
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
    double locs_buf[20];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
    buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
    MacroAssembler _masm(&buffer);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
    // Fill in the signature array, for the calling-convention call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
    int total_args_passed = method->size_of_parameters();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
    BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
    VMRegPair  * regs   = NEW_RESOURCE_ARRAY(VMRegPair  ,total_args_passed);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
    int i=0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
    if( !method->is_static() )  // Pass in receiver first
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
      sig_bt[i++] = T_OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
    SignatureStream ss(method->signature());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
    for( ; !ss.at_return_type(); ss.next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
      sig_bt[i++] = ss.type();  // Collect remaining bits of signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
      if( ss.type() == T_LONG || ss.type() == T_DOUBLE )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
        sig_bt[i++] = T_VOID;   // Longs & doubles take 2 Java slots
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
    assert( i==total_args_passed, "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
    BasicType ret_type = ss.type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
    // Now get the compiled-Java layout as input arguments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
    int comp_args_on_stack;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
    comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1978
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1979
    // Generate the compiled-to-native wrapper code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1980
    nm = SharedRuntime::generate_native_wrapper(&_masm,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1981
                                                method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1982
                                                total_args_passed,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
                                                comp_args_on_stack,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
                                                sig_bt,regs,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1985
                                                ret_type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1986
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1987
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1988
  // Must unlock before calling set_code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1989
  // Install the generated code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1990
  if (nm != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1991
    method->set_code(method, nm);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1992
    nm->post_compiled_method_load_event();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1994
    // CodeCache is full, disable compilation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
    // Ought to log this but compile log is only per compile thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
    // and we're some non descript Java thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
    UseInterpreter = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
    if (UseCompiler || AlwaysCompileLoopMethods ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
      warning("CodeCache is full. Compiler has been disabled");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
      if (CompileTheWorld || ExitOnFullCodeCache) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
        before_exit(JavaThread::current());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
        exit_globals(); // will delete tty
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
        vm_direct_exit(CompileTheWorld ? 0 : 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
      UseCompiler               = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
      AlwaysCompileLoopMethods  = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
  return nm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
363
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2014
#ifdef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2015
// Create a dtrace nmethod for this method.  The wrapper converts the
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2016
// java compiled calling convention to the native convention, makes a dummy call
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2017
// (actually nops for the size of the call instruction, which become a trap if
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2018
// probe is enabled). The returns to the caller. Since this all looks like a
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2019
// leaf no thread transition is needed.
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2020
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2021
nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2022
  ResourceMark rm;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2023
  nmethod* nm = NULL;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2024
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2025
  if (PrintCompilation) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2026
    ttyLocker ttyl;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2027
    tty->print("---   n%s  ");
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2028
    method->print_short_name(tty);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2029
    if (method->is_static()) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2030
      tty->print(" (static)");
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2031
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2032
    tty->cr();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2033
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2034
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2035
  {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2036
    // perform the work while holding the lock, but perform any printing
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2037
    // outside the lock
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2038
    MutexLocker mu(AdapterHandlerLibrary_lock);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2039
    // See if somebody beat us to it
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2040
    nm = method->code();
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2041
    if (nm) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2042
      return nm;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2043
    }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2044
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2045
    // Improve alignment slightly
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2046
    u_char* buf = (u_char*)
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2047
        (((intptr_t)_buffer + CodeEntryAlignment-1) & ~(CodeEntryAlignment-1));
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2048
    CodeBuffer buffer(buf, AdapterHandlerLibrary_size);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2049
    // Need a few relocation entries
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2050
    double locs_buf[20];
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2051
    buffer.insts()->initialize_shared_locs(
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2052
        (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo));
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2053
    MacroAssembler _masm(&buffer);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2054
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2055
    // Generate the compiled-to-native wrapper code
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2056
    nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2057
  }
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2058
  return nm;
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2059
}
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2060
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2061
// the dtrace method needs to convert java lang string to utf8 string.
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2062
void SharedRuntime::get_utf(oopDesc* src, address dst) {
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2063
  typeArrayOop jlsValue  = java_lang_String::value(src);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2064
  int          jlsOffset = java_lang_String::offset(src);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2065
  int          jlsLen    = java_lang_String::length(src);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2066
  jchar*       jlsPos    = (jlsLen == 0) ? NULL :
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2067
                                           jlsValue->char_at_addr(jlsOffset);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2068
  (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size);
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2069
}
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2070
#endif // ndef HAVE_DTRACE_H
99d43e8a76ad 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 235
diff changeset
  2071
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
// -------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
// Java-Java calling convention
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
// (what you use when Java calls Java)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
//------------------------------name_for_receiver----------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
// For a given signature, return the VMReg for parameter 0.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
VMReg SharedRuntime::name_for_receiver() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
  VMRegPair regs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
  BasicType sig_bt = T_OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
  (void) java_calling_convention(&sig_bt, &regs, 1, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
  // Return argument 0 register.  In the LP64 build pointers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
  // take 2 registers, but the VM wants only the 'main' name.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
  return regs.first();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
VMRegPair *SharedRuntime::find_callee_arguments(symbolOop sig, bool is_static, int* arg_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
  // This method is returning a data structure allocating as a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
  // ResourceObject, so do not put any ResourceMarks in here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
  char *s = sig->as_C_string();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
  int len = (int)strlen(s);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
  *s++; len--;                  // Skip opening paren
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
  char *t = s+len;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
  while( *(--t) != ')' ) ;      // Find close paren
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
  BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
  VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
  int cnt = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
  if (!is_static) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
    sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
  while( s < t ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
    switch( *s++ ) {            // Switch on signature character
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
    case 'B': sig_bt[cnt++] = T_BYTE;    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
    case 'C': sig_bt[cnt++] = T_CHAR;    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
    case 'D': sig_bt[cnt++] = T_DOUBLE;  sig_bt[cnt++] = T_VOID; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
    case 'F': sig_bt[cnt++] = T_FLOAT;   break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
    case 'I': sig_bt[cnt++] = T_INT;     break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
    case 'J': sig_bt[cnt++] = T_LONG;    sig_bt[cnt++] = T_VOID; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
    case 'S': sig_bt[cnt++] = T_SHORT;   break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
    case 'Z': sig_bt[cnt++] = T_BOOLEAN; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
    case 'V': sig_bt[cnt++] = T_VOID;    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
    case 'L':                   // Oop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
      while( *s++ != ';'  ) ;   // Skip signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
      sig_bt[cnt++] = T_OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
    case '[': {                 // Array
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
      do {                      // Skip optional size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
        while( *s >= '0' && *s <= '9' ) s++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
      } while( *s++ == '[' );   // Nested arrays?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
      // Skip element type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
      if( s[-1] == 'L' )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
        while( *s++ != ';'  ) ; // Skip signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
      sig_bt[cnt++] = T_ARRAY;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
    default : ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
  assert( cnt < 256, "grow table size" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
  int comp_args_on_stack;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
  comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2136
  // the calling convention doesn't count out_preserve_stack_slots so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2137
  // we must add that in to get "true" stack offsets.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2138
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2139
  if (comp_args_on_stack) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
    for (int i = 0; i < cnt; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
      VMReg reg1 = regs[i].first();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
      if( reg1->is_stack()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
        // Yuck
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
        reg1 = reg1->bias(out_preserve_stack_slots());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
      VMReg reg2 = regs[i].second();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
      if( reg2->is_stack()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
        // Yuck
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
        reg2 = reg2->bias(out_preserve_stack_slots());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2150
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2151
      regs[i].set_pair(reg2, reg1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2152
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2153
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2154
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2155
  // results
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2156
  *arg_size = cnt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
  return regs;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2158
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2159
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2160
// OSR Migration Code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2161
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
// This code is used convert interpreter frames into compiled frames.  It is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2163
// called from very start of a compiled OSR nmethod.  A temp array is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2164
// allocated to hold the interesting bits of the interpreter frame.  All
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2165
// active locks are inflated to allow them to move.  The displaced headers and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
// active interpeter locals are copied into the temp buffer.  Then we return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2167
// back to the compiled code.  The compiled code then pops the current
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
// interpreter frame off the stack and pushes a new compiled frame.  Then it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2169
// copies the interpreter locals and displaced headers where it wants.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2170
// Finally it calls back to free the temp buffer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2171
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2172
// All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2173
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2174
JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2175
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
#ifdef IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
  ShouldNotReachHere(); // NYI
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
#endif /* IA64 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
  // This code is dependent on the memory layout of the interpreter local
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
  // array and the monitors. On all of our platforms the layout is identical
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
  // so this code is shared. If some platform lays the their arrays out
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
  // differently then this code could move to platform specific code or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
  // the code here could be modified to copy items one at a time using
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
  // frame accessor methods and be platform independent.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
  frame fr = thread->last_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
  assert( fr.is_interpreted_frame(), "" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
  assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
  // Figure out how many monitors are active.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
  int active_monitor_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
  for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
       kptr < fr.interpreter_frame_monitor_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
       kptr = fr.next_monitor_in_interpreter_frame(kptr) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
    if( kptr->obj() != NULL ) active_monitor_count++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
  // QQQ we could place number of active monitors in the array so that compiled code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
  // could double check it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
  methodOop moop = fr.interpreter_frame_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
  int max_locals = moop->max_locals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
  // Allocate temp buffer, 1 word per local & 2 per active monitor
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
  int buf_size_words = max_locals + active_monitor_count*2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
  intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
  // Copy the locals.  Order is preserved so that loading of longs works.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
  // Since there's no GC I can copy the oops blindly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
  assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
  if (TaggedStackInterpreter) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
    for (int i = 0; i < max_locals; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
      // copy only each local separately to the buffer avoiding the tag
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
      buf[i] = *fr.interpreter_frame_local_at(max_locals-i-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
    Copy::disjoint_words(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
                       (HeapWord*)fr.interpreter_frame_local_at(max_locals-1),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
                       (HeapWord*)&buf[0],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
                       max_locals);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
  // Inflate locks.  Copy the displaced headers.  Be careful, there can be holes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
  int i = max_locals;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2226
  for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
       kptr2 < fr.interpreter_frame_monitor_begin();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
       kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
    if( kptr2->obj() != NULL) {         // Avoid 'holes' in the monitor array
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
      BasicLock *lock = kptr2->lock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
      // Inflate so the displaced header becomes position-independent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
      if (lock->displaced_header()->is_unlocked())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
        ObjectSynchronizer::inflate_helper(kptr2->obj());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
      // Now the displaced header is free to move
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
      buf[i++] = (intptr_t)lock->displaced_header();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
      buf[i++] = (intptr_t)kptr2->obj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2237
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
  assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
  return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
  FREE_C_HEAP_ARRAY(intptr_t,buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
JRT_END
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
bool AdapterHandlerLibrary::contains(CodeBlob* b) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
371
1aacedc9db7c 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 235
diff changeset
  2251
  if (_handlers == NULL) return false;
1aacedc9db7c 6689060: Escape Analysis does not work with Compressed Oops
kvn
parents: 235
diff changeset
  2252
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
  for (int i = 0 ; i < _handlers->length() ; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
    AdapterHandlerEntry* a = get_entry(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
    if ( a != NULL && b == CodeCache::find_blob(a->get_i2c_entry()) ) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2260
void AdapterHandlerLibrary::print_handler(CodeBlob* b) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2261
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2262
  for (int i = 0 ; i < _handlers->length() ; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2263
    AdapterHandlerEntry* a = get_entry(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
    if ( a != NULL && b == CodeCache::find_blob(a->get_i2c_entry()) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
      tty->print("Adapter for signature: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
      // Fingerprinter::print(_fingerprints->at(i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
      tty->print("0x%" FORMAT64_MODIFIER "x", _fingerprints->at(i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
      tty->print_cr(" i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
                    a->get_i2c_entry(), a->get_c2i_entry(), a->get_c2i_unverified_entry());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
  assert(false, "Should have found handler");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
#endif /* PRODUCT */