author | sla |
Mon, 10 Jun 2013 11:30:51 +0200 | |
changeset 18025 | b7bcf7497f93 |
parent 17617 | 4e330bce1812 |
child 20290 | 2127dc70bce9 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
18025 | 2 |
* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
1 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
|
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
1 | 22 |
* |
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*/ |
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||
7397 | 25 |
#include "precompiled.hpp" |
26 |
#include "code/codeBlob.hpp" |
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#include "code/codeCache.hpp" |
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#include "code/compiledIC.hpp" |
7397 | 29 |
#include "code/dependencies.hpp" |
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#include "code/icBuffer.hpp" |
7397 | 31 |
#include "code/nmethod.hpp" |
32 |
#include "code/pcDesc.hpp" |
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#include "compiler/compileBroker.hpp" |
7397 | 34 |
#include "gc_implementation/shared/markSweep.hpp" |
35 |
#include "memory/allocation.inline.hpp" |
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36 |
#include "memory/gcLocker.hpp" |
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37 |
#include "memory/iterator.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/method.hpp" |
7397 | 40 |
#include "oops/objArrayOop.hpp" |
41 |
#include "oops/oop.inline.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/arguments.hpp" |
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#include "runtime/icache.hpp" |
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#include "runtime/java.hpp" |
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46 |
#include "runtime/mutexLocker.hpp" |
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#include "services/memoryService.hpp" |
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18025 | 48 |
#include "trace/tracing.hpp" |
7397 | 49 |
#include "utilities/xmlstream.hpp" |
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// Helper class for printing in CodeCache |
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52 |
||
53 |
class CodeBlob_sizes { |
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54 |
private: |
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55 |
int count; |
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56 |
int total_size; |
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57 |
int header_size; |
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58 |
int code_size; |
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59 |
int stub_size; |
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int relocation_size; |
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int scopes_oop_size; |
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int scopes_metadata_size; |
1 | 63 |
int scopes_data_size; |
64 |
int scopes_pcs_size; |
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||
66 |
public: |
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CodeBlob_sizes() { |
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count = 0; |
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total_size = 0; |
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70 |
header_size = 0; |
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code_size = 0; |
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stub_size = 0; |
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relocation_size = 0; |
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scopes_oop_size = 0; |
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scopes_metadata_size = 0; |
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scopes_data_size = 0; |
77 |
scopes_pcs_size = 0; |
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} |
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79 |
||
80 |
int total() { return total_size; } |
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bool is_empty() { return count == 0; } |
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82 |
||
83 |
void print(const char* title) { |
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tty->print_cr(" #%d %s = %dK (hdr %d%%, loc %d%%, code %d%%, stub %d%%, [oops %d%%, data %d%%, pcs %d%%])", |
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count, |
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86 |
title, |
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87 |
total() / K, |
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header_size * 100 / total_size, |
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relocation_size * 100 / total_size, |
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90 |
code_size * 100 / total_size, |
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stub_size * 100 / total_size, |
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scopes_oop_size * 100 / total_size, |
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scopes_metadata_size * 100 / total_size, |
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scopes_data_size * 100 / total_size, |
95 |
scopes_pcs_size * 100 / total_size); |
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96 |
} |
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97 |
||
98 |
void add(CodeBlob* cb) { |
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99 |
count++; |
|
100 |
total_size += cb->size(); |
|
101 |
header_size += cb->header_size(); |
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relocation_size += cb->relocation_size(); |
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if (cb->is_nmethod()) { |
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nmethod* nm = cb->as_nmethod_or_null(); |
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code_size += nm->insts_size(); |
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stub_size += nm->stub_size(); |
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scopes_oop_size += nm->oops_size(); |
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scopes_metadata_size += nm->metadata_size(); |
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scopes_data_size += nm->scopes_data_size(); |
111 |
scopes_pcs_size += nm->scopes_pcs_size(); |
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112 |
} else { |
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6418 | 113 |
code_size += cb->code_size(); |
1 | 114 |
} |
115 |
} |
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116 |
}; |
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117 |
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118 |
// CodeCache implementation |
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119 |
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120 |
CodeHeap * CodeCache::_heap = new CodeHeap(); |
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int CodeCache::_number_of_blobs = 0; |
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int CodeCache::_number_of_adapters = 0; |
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int CodeCache::_number_of_nmethods = 0; |
1 | 124 |
int CodeCache::_number_of_nmethods_with_dependencies = 0; |
125 |
bool CodeCache::_needs_cache_clean = false; |
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nmethod* CodeCache::_scavenge_root_nmethods = NULL; |
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nmethod* CodeCache::_saved_nmethods = NULL; |
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int CodeCache::_codemem_full_count = 0; |
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131 |
CodeBlob* CodeCache::first() { |
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132 |
assert_locked_or_safepoint(CodeCache_lock); |
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133 |
return (CodeBlob*)_heap->first(); |
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} |
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135 |
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136 |
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CodeBlob* CodeCache::next(CodeBlob* cb) { |
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138 |
assert_locked_or_safepoint(CodeCache_lock); |
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139 |
return (CodeBlob*)_heap->next(cb); |
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140 |
} |
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141 |
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142 |
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143 |
CodeBlob* CodeCache::alive(CodeBlob *cb) { |
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144 |
assert_locked_or_safepoint(CodeCache_lock); |
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145 |
while (cb != NULL && !cb->is_alive()) cb = next(cb); |
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return cb; |
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147 |
} |
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148 |
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149 |
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150 |
nmethod* CodeCache::alive_nmethod(CodeBlob* cb) { |
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151 |
assert_locked_or_safepoint(CodeCache_lock); |
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152 |
while (cb != NULL && (!cb->is_alive() || !cb->is_nmethod())) cb = next(cb); |
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return (nmethod*)cb; |
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154 |
} |
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nmethod* CodeCache::first_nmethod() { |
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assert_locked_or_safepoint(CodeCache_lock); |
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CodeBlob* cb = first(); |
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while (cb != NULL && !cb->is_nmethod()) { |
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cb = next(cb); |
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} |
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return (nmethod*)cb; |
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} |
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nmethod* CodeCache::next_nmethod (CodeBlob* cb) { |
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assert_locked_or_safepoint(CodeCache_lock); |
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cb = next(cb); |
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while (cb != NULL && !cb->is_nmethod()) { |
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cb = next(cb); |
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} |
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return (nmethod*)cb; |
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} |
1 | 173 |
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static size_t maxCodeCacheUsed = 0; |
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CodeBlob* CodeCache::allocate(int size, bool is_critical) { |
1 | 177 |
// Do not seize the CodeCache lock here--if the caller has not |
178 |
// already done so, we are going to lose bigtime, since the code |
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179 |
// cache will contain a garbage CodeBlob until the caller can |
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180 |
// run the constructor for the CodeBlob subclass he is busy |
|
181 |
// instantiating. |
|
182 |
guarantee(size >= 0, "allocation request must be reasonable"); |
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183 |
assert_locked_or_safepoint(CodeCache_lock); |
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184 |
CodeBlob* cb = NULL; |
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185 |
_number_of_blobs++; |
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186 |
while (true) { |
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cb = (CodeBlob*)_heap->allocate(size, is_critical); |
1 | 188 |
if (cb != NULL) break; |
189 |
if (!_heap->expand_by(CodeCacheExpansionSize)) { |
|
190 |
// Expansion failed |
|
191 |
return NULL; |
|
192 |
} |
|
193 |
if (PrintCodeCacheExtension) { |
|
194 |
ResourceMark rm; |
|
195 |
tty->print_cr("code cache extended to [" INTPTR_FORMAT ", " INTPTR_FORMAT "] (%d bytes)", |
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(intptr_t)_heap->low_boundary(), (intptr_t)_heap->high(), |
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197 |
(address)_heap->high() - (address)_heap->low_boundary()); |
1 | 198 |
} |
199 |
} |
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maxCodeCacheUsed = MAX2(maxCodeCacheUsed, ((address)_heap->high_boundary() - |
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(address)_heap->low_boundary()) - unallocated_capacity()); |
1 | 202 |
verify_if_often(); |
3908 | 203 |
print_trace("allocation", cb, size); |
1 | 204 |
return cb; |
205 |
} |
|
206 |
||
207 |
void CodeCache::free(CodeBlob* cb) { |
|
208 |
assert_locked_or_safepoint(CodeCache_lock); |
|
209 |
verify_if_often(); |
|
210 |
||
3908 | 211 |
print_trace("free", cb); |
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if (cb->is_nmethod()) { |
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_number_of_nmethods--; |
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if (((nmethod *)cb)->has_dependencies()) { |
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_number_of_nmethods_with_dependencies--; |
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216 |
} |
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217 |
} |
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218 |
if (cb->is_adapter_blob()) { |
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219 |
_number_of_adapters--; |
1 | 220 |
} |
221 |
_number_of_blobs--; |
|
222 |
||
223 |
_heap->deallocate(cb); |
|
224 |
||
225 |
verify_if_often(); |
|
226 |
assert(_number_of_blobs >= 0, "sanity check"); |
|
227 |
} |
|
228 |
||
229 |
||
230 |
void CodeCache::commit(CodeBlob* cb) { |
|
231 |
// this is called by nmethod::nmethod, which must already own CodeCache_lock |
|
232 |
assert_locked_or_safepoint(CodeCache_lock); |
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233 |
if (cb->is_nmethod()) { |
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_number_of_nmethods++; |
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if (((nmethod *)cb)->has_dependencies()) { |
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_number_of_nmethods_with_dependencies++; |
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237 |
} |
1 | 238 |
} |
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239 |
if (cb->is_adapter_blob()) { |
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_number_of_adapters++; |
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241 |
} |
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242 |
|
1 | 243 |
// flush the hardware I-cache |
6418 | 244 |
ICache::invalidate_range(cb->content_begin(), cb->content_size()); |
1 | 245 |
} |
246 |
||
247 |
||
248 |
void CodeCache::flush() { |
|
249 |
assert_locked_or_safepoint(CodeCache_lock); |
|
250 |
Unimplemented(); |
|
251 |
} |
|
252 |
||
253 |
||
254 |
// Iteration over CodeBlobs |
|
255 |
||
256 |
#define FOR_ALL_BLOBS(var) for (CodeBlob *var = first() ; var != NULL; var = next(var) ) |
|
257 |
#define FOR_ALL_ALIVE_BLOBS(var) for (CodeBlob *var = alive(first()); var != NULL; var = alive(next(var))) |
|
258 |
#define FOR_ALL_ALIVE_NMETHODS(var) for (nmethod *var = alive_nmethod(first()); var != NULL; var = alive_nmethod(next(var))) |
|
259 |
||
260 |
||
261 |
bool CodeCache::contains(void *p) { |
|
262 |
// It should be ok to call contains without holding a lock |
|
263 |
return _heap->contains(p); |
|
264 |
} |
|
265 |
||
266 |
||
267 |
// This method is safe to call without holding the CodeCache_lock, as long as a dead codeblob is not |
|
268 |
// looked up (i.e., one that has been marked for deletion). It only dependes on the _segmap to contain |
|
269 |
// valid indices, which it will always do, as long as the CodeBlob is not in the process of being recycled. |
|
270 |
CodeBlob* CodeCache::find_blob(void* start) { |
|
271 |
CodeBlob* result = find_blob_unsafe(start); |
|
272 |
if (result == NULL) return NULL; |
|
273 |
// We could potientially look up non_entrant methods |
|
274 |
guarantee(!result->is_zombie() || result->is_locked_by_vm() || is_error_reported(), "unsafe access to zombie method"); |
|
275 |
return result; |
|
276 |
} |
|
277 |
||
278 |
nmethod* CodeCache::find_nmethod(void* start) { |
|
279 |
CodeBlob *cb = find_blob(start); |
|
280 |
assert(cb == NULL || cb->is_nmethod(), "did not find an nmethod"); |
|
281 |
return (nmethod*)cb; |
|
282 |
} |
|
283 |
||
284 |
||
285 |
void CodeCache::blobs_do(void f(CodeBlob* nm)) { |
|
286 |
assert_locked_or_safepoint(CodeCache_lock); |
|
287 |
FOR_ALL_BLOBS(p) { |
|
288 |
f(p); |
|
289 |
} |
|
290 |
} |
|
291 |
||
292 |
||
293 |
void CodeCache::nmethods_do(void f(nmethod* nm)) { |
|
294 |
assert_locked_or_safepoint(CodeCache_lock); |
|
295 |
FOR_ALL_BLOBS(nm) { |
|
296 |
if (nm->is_nmethod()) f((nmethod*)nm); |
|
297 |
} |
|
298 |
} |
|
299 |
||
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300 |
void CodeCache::alive_nmethods_do(void f(nmethod* nm)) { |
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301 |
assert_locked_or_safepoint(CodeCache_lock); |
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302 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
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|
303 |
f(nm); |
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304 |
} |
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305 |
} |
1 | 306 |
|
307 |
int CodeCache::alignment_unit() { |
|
308 |
return (int)_heap->alignment_unit(); |
|
309 |
} |
|
310 |
||
311 |
||
312 |
int CodeCache::alignment_offset() { |
|
313 |
return (int)_heap->alignment_offset(); |
|
314 |
} |
|
315 |
||
316 |
||
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317 |
// Mark nmethods for unloading if they contain otherwise unreachable |
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|
318 |
// oops. |
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|
319 |
void CodeCache::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
1 | 320 |
assert_locked_or_safepoint(CodeCache_lock); |
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|
321 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
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|
322 |
nm->do_unloading(is_alive, unloading_occurred); |
1 | 323 |
} |
324 |
} |
|
325 |
||
3908 | 326 |
void CodeCache::blobs_do(CodeBlobClosure* f) { |
1 | 327 |
assert_locked_or_safepoint(CodeCache_lock); |
328 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
3908 | 329 |
f->do_code_blob(cb); |
330 |
||
331 |
#ifdef ASSERT |
|
332 |
if (cb->is_nmethod()) |
|
333 |
((nmethod*)cb)->verify_scavenge_root_oops(); |
|
334 |
#endif //ASSERT |
|
1 | 335 |
} |
336 |
} |
|
337 |
||
3908 | 338 |
// Walk the list of methods which might contain non-perm oops. |
339 |
void CodeCache::scavenge_root_nmethods_do(CodeBlobClosure* f) { |
|
340 |
assert_locked_or_safepoint(CodeCache_lock); |
|
341 |
debug_only(mark_scavenge_root_nmethods()); |
|
342 |
||
343 |
for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) { |
|
344 |
debug_only(cur->clear_scavenge_root_marked()); |
|
345 |
assert(cur->scavenge_root_not_marked(), ""); |
|
346 |
assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); |
|
347 |
||
348 |
bool is_live = (!cur->is_zombie() && !cur->is_unloaded()); |
|
349 |
#ifndef PRODUCT |
|
350 |
if (TraceScavenge) { |
|
351 |
cur->print_on(tty, is_live ? "scavenge root" : "dead scavenge root"); tty->cr(); |
|
352 |
} |
|
353 |
#endif //PRODUCT |
|
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|
354 |
if (is_live) { |
3908 | 355 |
// Perform cur->oops_do(f), maybe just once per nmethod. |
356 |
f->do_code_blob(cur); |
|
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|
357 |
} |
3908 | 358 |
} |
359 |
||
360 |
// Check for stray marks. |
|
361 |
debug_only(verify_perm_nmethods(NULL)); |
|
362 |
} |
|
363 |
||
364 |
void CodeCache::add_scavenge_root_nmethod(nmethod* nm) { |
|
365 |
assert_locked_or_safepoint(CodeCache_lock); |
|
366 |
nm->set_on_scavenge_root_list(); |
|
367 |
nm->set_scavenge_root_link(_scavenge_root_nmethods); |
|
368 |
set_scavenge_root_nmethods(nm); |
|
369 |
print_trace("add_scavenge_root", nm); |
|
370 |
} |
|
371 |
||
372 |
void CodeCache::drop_scavenge_root_nmethod(nmethod* nm) { |
|
373 |
assert_locked_or_safepoint(CodeCache_lock); |
|
374 |
print_trace("drop_scavenge_root", nm); |
|
375 |
nmethod* last = NULL; |
|
376 |
nmethod* cur = scavenge_root_nmethods(); |
|
377 |
while (cur != NULL) { |
|
378 |
nmethod* next = cur->scavenge_root_link(); |
|
379 |
if (cur == nm) { |
|
380 |
if (last != NULL) |
|
381 |
last->set_scavenge_root_link(next); |
|
382 |
else set_scavenge_root_nmethods(next); |
|
383 |
nm->set_scavenge_root_link(NULL); |
|
384 |
nm->clear_on_scavenge_root_list(); |
|
385 |
return; |
|
386 |
} |
|
387 |
last = cur; |
|
388 |
cur = next; |
|
389 |
} |
|
390 |
assert(false, "should have been on list"); |
|
391 |
} |
|
392 |
||
393 |
void CodeCache::prune_scavenge_root_nmethods() { |
|
394 |
assert_locked_or_safepoint(CodeCache_lock); |
|
395 |
debug_only(mark_scavenge_root_nmethods()); |
|
396 |
||
397 |
nmethod* last = NULL; |
|
398 |
nmethod* cur = scavenge_root_nmethods(); |
|
399 |
while (cur != NULL) { |
|
400 |
nmethod* next = cur->scavenge_root_link(); |
|
401 |
debug_only(cur->clear_scavenge_root_marked()); |
|
402 |
assert(cur->scavenge_root_not_marked(), ""); |
|
403 |
assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); |
|
404 |
||
405 |
if (!cur->is_zombie() && !cur->is_unloaded() |
|
406 |
&& cur->detect_scavenge_root_oops()) { |
|
407 |
// Keep it. Advance 'last' to prevent deletion. |
|
408 |
last = cur; |
|
409 |
} else { |
|
410 |
// Prune it from the list, so we don't have to look at it any more. |
|
411 |
print_trace("prune_scavenge_root", cur); |
|
412 |
cur->set_scavenge_root_link(NULL); |
|
413 |
cur->clear_on_scavenge_root_list(); |
|
414 |
if (last != NULL) |
|
415 |
last->set_scavenge_root_link(next); |
|
416 |
else set_scavenge_root_nmethods(next); |
|
417 |
} |
|
418 |
cur = next; |
|
419 |
} |
|
420 |
||
421 |
// Check for stray marks. |
|
422 |
debug_only(verify_perm_nmethods(NULL)); |
|
423 |
} |
|
424 |
||
425 |
#ifndef PRODUCT |
|
426 |
void CodeCache::asserted_non_scavengable_nmethods_do(CodeBlobClosure* f) { |
|
427 |
// While we are here, verify the integrity of the list. |
|
428 |
mark_scavenge_root_nmethods(); |
|
429 |
for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) { |
|
430 |
assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); |
|
431 |
cur->clear_scavenge_root_marked(); |
|
432 |
} |
|
433 |
verify_perm_nmethods(f); |
|
434 |
} |
|
435 |
||
436 |
// Temporarily mark nmethods that are claimed to be on the non-perm list. |
|
437 |
void CodeCache::mark_scavenge_root_nmethods() { |
|
438 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
439 |
if (cb->is_nmethod()) { |
|
440 |
nmethod *nm = (nmethod*)cb; |
|
441 |
assert(nm->scavenge_root_not_marked(), "clean state"); |
|
442 |
if (nm->on_scavenge_root_list()) |
|
443 |
nm->set_scavenge_root_marked(); |
|
444 |
} |
|
445 |
} |
|
446 |
} |
|
447 |
||
448 |
// If the closure is given, run it on the unlisted nmethods. |
|
449 |
// Also make sure that the effects of mark_scavenge_root_nmethods is gone. |
|
450 |
void CodeCache::verify_perm_nmethods(CodeBlobClosure* f_or_null) { |
|
451 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
452 |
bool call_f = (f_or_null != NULL); |
|
453 |
if (cb->is_nmethod()) { |
|
454 |
nmethod *nm = (nmethod*)cb; |
|
455 |
assert(nm->scavenge_root_not_marked(), "must be already processed"); |
|
456 |
if (nm->on_scavenge_root_list()) |
|
457 |
call_f = false; // don't show this one to the client |
|
458 |
nm->verify_scavenge_root_oops(); |
|
459 |
} else { |
|
460 |
call_f = false; // not an nmethod |
|
461 |
} |
|
462 |
if (call_f) f_or_null->do_code_blob(cb); |
|
463 |
} |
|
464 |
} |
|
465 |
#endif //PRODUCT |
|
466 |
||
17132
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
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parents:
17016
diff
changeset
|
467 |
/** |
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
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17016
diff
changeset
|
468 |
* Remove and return nmethod from the saved code list in order to reanimate it. |
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
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parents:
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diff
changeset
|
469 |
*/ |
dffd513b2a8c
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17016
diff
changeset
|
470 |
nmethod* CodeCache::reanimate_saved_code(Method* m) { |
4750 | 471 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
472 |
nmethod* saved = _saved_nmethods; |
|
473 |
nmethod* prev = NULL; |
|
474 |
while (saved != NULL) { |
|
475 |
if (saved->is_in_use() && saved->method() == m) { |
|
476 |
if (prev != NULL) { |
|
477 |
prev->set_saved_nmethod_link(saved->saved_nmethod_link()); |
|
478 |
} else { |
|
479 |
_saved_nmethods = saved->saved_nmethod_link(); |
|
480 |
} |
|
481 |
assert(saved->is_speculatively_disconnected(), "shouldn't call for other nmethods"); |
|
482 |
saved->set_speculatively_disconnected(false); |
|
483 |
saved->set_saved_nmethod_link(NULL); |
|
484 |
if (PrintMethodFlushing) { |
|
17132
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
neliasso
parents:
17016
diff
changeset
|
485 |
saved->print_on(tty, " ### nmethod is reconnected"); |
4750 | 486 |
} |
487 |
if (LogCompilation && (xtty != NULL)) { |
|
488 |
ttyLocker ttyl; |
|
489 |
xtty->begin_elem("nmethod_reconnected compile_id='%3d'", saved->compile_id()); |
|
13728
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changeset
|
490 |
xtty->method(m); |
4750 | 491 |
xtty->stamp(); |
492 |
xtty->end_elem(); |
|
493 |
} |
|
494 |
return saved; |
|
495 |
} |
|
496 |
prev = saved; |
|
497 |
saved = saved->saved_nmethod_link(); |
|
498 |
} |
|
499 |
return NULL; |
|
500 |
} |
|
501 |
||
17132
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
neliasso
parents:
17016
diff
changeset
|
502 |
/** |
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
neliasso
parents:
17016
diff
changeset
|
503 |
* Remove nmethod from the saved code list in order to discard it permanently |
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
neliasso
parents:
17016
diff
changeset
|
504 |
*/ |
4750 | 505 |
void CodeCache::remove_saved_code(nmethod* nm) { |
5533
e8d9ff82ec62
6950075: nmethod sweeper should operate concurrently
never
parents:
5247
diff
changeset
|
506 |
// For conc swpr this will be called with CodeCache_lock taken by caller |
e8d9ff82ec62
6950075: nmethod sweeper should operate concurrently
never
parents:
5247
diff
changeset
|
507 |
assert_locked_or_safepoint(CodeCache_lock); |
4750 | 508 |
assert(nm->is_speculatively_disconnected(), "shouldn't call for other nmethods"); |
509 |
nmethod* saved = _saved_nmethods; |
|
510 |
nmethod* prev = NULL; |
|
511 |
while (saved != NULL) { |
|
512 |
if (saved == nm) { |
|
513 |
if (prev != NULL) { |
|
514 |
prev->set_saved_nmethod_link(saved->saved_nmethod_link()); |
|
515 |
} else { |
|
516 |
_saved_nmethods = saved->saved_nmethod_link(); |
|
517 |
} |
|
518 |
if (LogCompilation && (xtty != NULL)) { |
|
519 |
ttyLocker ttyl; |
|
520 |
xtty->begin_elem("nmethod_removed compile_id='%3d'", nm->compile_id()); |
|
521 |
xtty->stamp(); |
|
522 |
xtty->end_elem(); |
|
523 |
} |
|
524 |
return; |
|
525 |
} |
|
526 |
prev = saved; |
|
527 |
saved = saved->saved_nmethod_link(); |
|
528 |
} |
|
529 |
ShouldNotReachHere(); |
|
530 |
} |
|
531 |
||
532 |
void CodeCache::speculatively_disconnect(nmethod* nm) { |
|
533 |
assert_locked_or_safepoint(CodeCache_lock); |
|
534 |
assert(nm->is_in_use() && !nm->is_speculatively_disconnected(), "should only disconnect live nmethods"); |
|
535 |
nm->set_saved_nmethod_link(_saved_nmethods); |
|
536 |
_saved_nmethods = nm; |
|
537 |
if (PrintMethodFlushing) { |
|
17132
dffd513b2a8c
8012547: Code cache flushing can get stuck reclaming of memory
neliasso
parents:
17016
diff
changeset
|
538 |
nm->print_on(tty, " ### nmethod is speculatively disconnected"); |
4750 | 539 |
} |
540 |
if (LogCompilation && (xtty != NULL)) { |
|
541 |
ttyLocker ttyl; |
|
542 |
xtty->begin_elem("nmethod_disconnected compile_id='%3d'", nm->compile_id()); |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
543 |
xtty->method(nm->method()); |
4750 | 544 |
xtty->stamp(); |
545 |
xtty->end_elem(); |
|
546 |
} |
|
547 |
nm->method()->clear_code(); |
|
548 |
nm->set_speculatively_disconnected(true); |
|
549 |
} |
|
550 |
||
551 |
||
1 | 552 |
void CodeCache::gc_prologue() { |
3908 | 553 |
assert(!nmethod::oops_do_marking_is_active(), "oops_do_marking_epilogue must be called"); |
1 | 554 |
} |
555 |
||
556 |
||
557 |
void CodeCache::gc_epilogue() { |
|
558 |
assert_locked_or_safepoint(CodeCache_lock); |
|
559 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
560 |
if (cb->is_nmethod()) { |
|
561 |
nmethod *nm = (nmethod*)cb; |
|
562 |
assert(!nm->is_unloaded(), "Tautology"); |
|
563 |
if (needs_cache_clean()) { |
|
564 |
nm->cleanup_inline_caches(); |
|
565 |
} |
|
5686
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
566 |
DEBUG_ONLY(nm->verify()); |
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
567 |
nm->fix_oop_relocations(); |
1 | 568 |
} |
569 |
} |
|
570 |
set_needs_cache_clean(false); |
|
3908 | 571 |
prune_scavenge_root_nmethods(); |
572 |
assert(!nmethod::oops_do_marking_is_active(), "oops_do_marking_prologue must be called"); |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
573 |
|
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
574 |
#ifdef ASSERT |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
575 |
// make sure that we aren't leaking icholders |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
576 |
int count = 0; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
577 |
FOR_ALL_BLOBS(cb) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
578 |
if (cb->is_nmethod()) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
579 |
RelocIterator iter((nmethod*)cb); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
580 |
while(iter.next()) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
581 |
if (iter.type() == relocInfo::virtual_call_type) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
582 |
if (CompiledIC::is_icholder_call_site(iter.virtual_call_reloc())) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
583 |
CompiledIC *ic = CompiledIC_at(iter.reloc()); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
584 |
if (TraceCompiledIC) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
585 |
tty->print("noticed icholder " INTPTR_FORMAT " ", ic->cached_icholder()); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
586 |
ic->print(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
587 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
588 |
assert(ic->cached_icholder() != NULL, "must be non-NULL"); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
589 |
count++; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
590 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
591 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
592 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
593 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
594 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
595 |
|
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
596 |
assert(count + InlineCacheBuffer::pending_icholder_count() + CompiledICHolder::live_not_claimed_count() == |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
597 |
CompiledICHolder::live_count(), "must agree"); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
598 |
#endif |
1 | 599 |
} |
600 |
||
601 |
||
8724
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
602 |
void CodeCache::verify_oops() { |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
603 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
604 |
VerifyOopClosure voc; |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
605 |
FOR_ALL_ALIVE_BLOBS(cb) { |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
606 |
if (cb->is_nmethod()) { |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
607 |
nmethod *nm = (nmethod*)cb; |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
608 |
nm->oops_do(&voc); |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
609 |
nm->verify_oop_relocations(); |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
610 |
} |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
611 |
} |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
612 |
} |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
613 |
|
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
614 |
|
1 | 615 |
address CodeCache::first_address() { |
616 |
assert_locked_or_safepoint(CodeCache_lock); |
|
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
617 |
return (address)_heap->low_boundary(); |
1 | 618 |
} |
619 |
||
620 |
||
621 |
address CodeCache::last_address() { |
|
622 |
assert_locked_or_safepoint(CodeCache_lock); |
|
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
623 |
return (address)_heap->high(); |
1 | 624 |
} |
625 |
||
17617
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
626 |
/** |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
627 |
* Returns the reverse free ratio. E.g., if 25% (1/4) of the code cache |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
628 |
* is free, reverse_free_ratio() returns 4. |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
629 |
*/ |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
630 |
double CodeCache::reverse_free_ratio() { |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
631 |
double unallocated_capacity = (double)(CodeCache::unallocated_capacity() - CodeCacheMinimumFreeSpace); |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
632 |
double max_capacity = (double)CodeCache::max_capacity(); |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
633 |
return max_capacity / unallocated_capacity; |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
634 |
} |
1 | 635 |
|
636 |
void icache_init(); |
|
637 |
||
638 |
void CodeCache::initialize() { |
|
639 |
assert(CodeCacheSegmentSize >= (uintx)CodeEntryAlignment, "CodeCacheSegmentSize must be large enough to align entry points"); |
|
640 |
#ifdef COMPILER2 |
|
641 |
assert(CodeCacheSegmentSize >= (uintx)OptoLoopAlignment, "CodeCacheSegmentSize must be large enough to align inner loops"); |
|
642 |
#endif |
|
643 |
assert(CodeCacheSegmentSize >= sizeof(jdouble), "CodeCacheSegmentSize must be large enough to align constants"); |
|
644 |
// This was originally just a check of the alignment, causing failure, instead, round |
|
645 |
// the code cache to the page size. In particular, Solaris is moving to a larger |
|
646 |
// default page size. |
|
647 |
CodeCacheExpansionSize = round_to(CodeCacheExpansionSize, os::vm_page_size()); |
|
648 |
InitialCodeCacheSize = round_to(InitialCodeCacheSize, os::vm_page_size()); |
|
649 |
ReservedCodeCacheSize = round_to(ReservedCodeCacheSize, os::vm_page_size()); |
|
650 |
if (!_heap->reserve(ReservedCodeCacheSize, InitialCodeCacheSize, CodeCacheSegmentSize)) { |
|
651 |
vm_exit_during_initialization("Could not reserve enough space for code cache"); |
|
652 |
} |
|
653 |
||
654 |
MemoryService::add_code_heap_memory_pool(_heap); |
|
655 |
||
656 |
// Initialize ICache flush mechanism |
|
657 |
// This service is needed for os::register_code_area |
|
658 |
icache_init(); |
|
659 |
||
660 |
// Give OS a chance to register generated code area. |
|
661 |
// This is used on Windows 64 bit platforms to register |
|
662 |
// Structured Exception Handlers for our generated code. |
|
663 |
os::register_code_area(_heap->low_boundary(), _heap->high_boundary()); |
|
664 |
} |
|
665 |
||
666 |
||
667 |
void codeCache_init() { |
|
668 |
CodeCache::initialize(); |
|
669 |
} |
|
670 |
||
671 |
//------------------------------------------------------------------------------------------------ |
|
672 |
||
673 |
int CodeCache::number_of_nmethods_with_dependencies() { |
|
674 |
return _number_of_nmethods_with_dependencies; |
|
675 |
} |
|
676 |
||
677 |
void CodeCache::clear_inline_caches() { |
|
678 |
assert_locked_or_safepoint(CodeCache_lock); |
|
679 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
680 |
nm->clear_inline_caches(); |
|
681 |
} |
|
682 |
} |
|
683 |
||
684 |
#ifndef PRODUCT |
|
685 |
// used to keep track of how much time is spent in mark_for_deoptimization |
|
686 |
static elapsedTimer dependentCheckTime; |
|
687 |
static int dependentCheckCount = 0; |
|
688 |
#endif // PRODUCT |
|
689 |
||
690 |
||
691 |
int CodeCache::mark_for_deoptimization(DepChange& changes) { |
|
692 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
693 |
||
694 |
#ifndef PRODUCT |
|
695 |
dependentCheckTime.start(); |
|
696 |
dependentCheckCount++; |
|
697 |
#endif // PRODUCT |
|
698 |
||
699 |
int number_of_marked_CodeBlobs = 0; |
|
700 |
||
701 |
// search the hierarchy looking for nmethods which are affected by the loading of this class |
|
702 |
||
703 |
// then search the interfaces this class implements looking for nmethods |
|
704 |
// which might be dependent of the fact that an interface only had one |
|
705 |
// implementor. |
|
706 |
||
707 |
{ No_Safepoint_Verifier nsv; |
|
708 |
for (DepChange::ContextStream str(changes, nsv); str.next(); ) { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
709 |
Klass* d = str.klass(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
710 |
number_of_marked_CodeBlobs += InstanceKlass::cast(d)->mark_dependent_nmethods(changes); |
1 | 711 |
} |
712 |
} |
|
713 |
||
714 |
if (VerifyDependencies) { |
|
715 |
// Turn off dependency tracing while actually testing deps. |
|
716 |
NOT_PRODUCT( FlagSetting fs(TraceDependencies, false) ); |
|
717 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
718 |
if (!nm->is_marked_for_deoptimization() && |
|
719 |
nm->check_all_dependencies()) { |
|
720 |
ResourceMark rm; |
|
721 |
tty->print_cr("Should have been marked for deoptimization:"); |
|
722 |
changes.print(); |
|
723 |
nm->print(); |
|
724 |
nm->print_dependencies(); |
|
725 |
} |
|
726 |
} |
|
727 |
} |
|
728 |
||
729 |
#ifndef PRODUCT |
|
730 |
dependentCheckTime.stop(); |
|
731 |
#endif // PRODUCT |
|
732 |
||
733 |
return number_of_marked_CodeBlobs; |
|
734 |
} |
|
735 |
||
736 |
||
737 |
#ifdef HOTSWAP |
|
738 |
int CodeCache::mark_for_evol_deoptimization(instanceKlassHandle dependee) { |
|
739 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
740 |
int number_of_marked_CodeBlobs = 0; |
|
741 |
||
742 |
// Deoptimize all methods of the evolving class itself |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
743 |
Array<Method*>* old_methods = dependee->methods(); |
1 | 744 |
for (int i = 0; i < old_methods->length(); i++) { |
745 |
ResourceMark rm; |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
746 |
Method* old_method = old_methods->at(i); |
1 | 747 |
nmethod *nm = old_method->code(); |
748 |
if (nm != NULL) { |
|
749 |
nm->mark_for_deoptimization(); |
|
750 |
number_of_marked_CodeBlobs++; |
|
751 |
} |
|
752 |
} |
|
753 |
||
754 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
755 |
if (nm->is_marked_for_deoptimization()) { |
|
756 |
// ...Already marked in the previous pass; don't count it again. |
|
757 |
} else if (nm->is_evol_dependent_on(dependee())) { |
|
758 |
ResourceMark rm; |
|
759 |
nm->mark_for_deoptimization(); |
|
760 |
number_of_marked_CodeBlobs++; |
|
761 |
} else { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
762 |
// flush caches in case they refer to a redefined Method* |
1 | 763 |
nm->clear_inline_caches(); |
764 |
} |
|
765 |
} |
|
766 |
||
767 |
return number_of_marked_CodeBlobs; |
|
768 |
} |
|
769 |
#endif // HOTSWAP |
|
770 |
||
771 |
||
772 |
// Deoptimize all methods |
|
773 |
void CodeCache::mark_all_nmethods_for_deoptimization() { |
|
774 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
775 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
776 |
nm->mark_for_deoptimization(); |
|
777 |
} |
|
778 |
} |
|
779 |
||
780 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
781 |
int CodeCache::mark_for_deoptimization(Method* dependee) { |
1 | 782 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
783 |
int number_of_marked_CodeBlobs = 0; |
|
784 |
||
785 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
786 |
if (nm->is_dependent_on_method(dependee)) { |
|
787 |
ResourceMark rm; |
|
788 |
nm->mark_for_deoptimization(); |
|
789 |
number_of_marked_CodeBlobs++; |
|
790 |
} |
|
791 |
} |
|
792 |
||
793 |
return number_of_marked_CodeBlobs; |
|
794 |
} |
|
795 |
||
796 |
void CodeCache::make_marked_nmethods_zombies() { |
|
797 |
assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint"); |
|
798 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
799 |
if (nm->is_marked_for_deoptimization()) { |
|
800 |
||
801 |
// If the nmethod has already been made non-entrant and it can be converted |
|
802 |
// then zombie it now. Otherwise make it non-entrant and it will eventually |
|
803 |
// be zombied when it is no longer seen on the stack. Note that the nmethod |
|
804 |
// might be "entrant" and not on the stack and so could be zombied immediately |
|
805 |
// but we can't tell because we don't track it on stack until it becomes |
|
806 |
// non-entrant. |
|
807 |
||
808 |
if (nm->is_not_entrant() && nm->can_not_entrant_be_converted()) { |
|
809 |
nm->make_zombie(); |
|
810 |
} else { |
|
811 |
nm->make_not_entrant(); |
|
812 |
} |
|
813 |
} |
|
814 |
} |
|
815 |
} |
|
816 |
||
817 |
void CodeCache::make_marked_nmethods_not_entrant() { |
|
818 |
assert_locked_or_safepoint(CodeCache_lock); |
|
819 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
820 |
if (nm->is_marked_for_deoptimization()) { |
|
821 |
nm->make_not_entrant(); |
|
822 |
} |
|
823 |
} |
|
824 |
} |
|
825 |
||
826 |
void CodeCache::verify() { |
|
827 |
_heap->verify(); |
|
828 |
FOR_ALL_ALIVE_BLOBS(p) { |
|
829 |
p->verify(); |
|
830 |
} |
|
831 |
} |
|
832 |
||
18025 | 833 |
void CodeCache::report_codemem_full() { |
834 |
_codemem_full_count++; |
|
835 |
EventCodeCacheFull event; |
|
836 |
if (event.should_commit()) { |
|
837 |
event.set_startAddress((u8)low_bound()); |
|
838 |
event.set_commitedTopAddress((u8)high()); |
|
839 |
event.set_reservedTopAddress((u8)high_bound()); |
|
840 |
event.set_entryCount(nof_blobs()); |
|
841 |
event.set_methodCount(nof_nmethods()); |
|
842 |
event.set_adaptorCount(nof_adapters()); |
|
843 |
event.set_unallocatedCapacity(unallocated_capacity()/K); |
|
844 |
event.set_fullCount(_codemem_full_count); |
|
845 |
event.commit(); |
|
846 |
} |
|
847 |
} |
|
848 |
||
1 | 849 |
//------------------------------------------------------------------------------------------------ |
850 |
// Non-product version |
|
851 |
||
852 |
#ifndef PRODUCT |
|
853 |
||
854 |
void CodeCache::verify_if_often() { |
|
855 |
if (VerifyCodeCacheOften) { |
|
856 |
_heap->verify(); |
|
857 |
} |
|
858 |
} |
|
859 |
||
3908 | 860 |
void CodeCache::print_trace(const char* event, CodeBlob* cb, int size) { |
861 |
if (PrintCodeCache2) { // Need to add a new flag |
|
862 |
ResourceMark rm; |
|
863 |
if (size == 0) size = cb->size(); |
|
864 |
tty->print_cr("CodeCache %s: addr: " INTPTR_FORMAT ", size: 0x%x", event, cb, size); |
|
865 |
} |
|
866 |
} |
|
867 |
||
1 | 868 |
void CodeCache::print_internals() { |
869 |
int nmethodCount = 0; |
|
870 |
int runtimeStubCount = 0; |
|
871 |
int adapterCount = 0; |
|
872 |
int deoptimizationStubCount = 0; |
|
873 |
int uncommonTrapStubCount = 0; |
|
874 |
int bufferBlobCount = 0; |
|
875 |
int total = 0; |
|
876 |
int nmethodAlive = 0; |
|
877 |
int nmethodNotEntrant = 0; |
|
878 |
int nmethodZombie = 0; |
|
879 |
int nmethodUnloaded = 0; |
|
880 |
int nmethodJava = 0; |
|
881 |
int nmethodNative = 0; |
|
882 |
int maxCodeSize = 0; |
|
883 |
ResourceMark rm; |
|
884 |
||
885 |
CodeBlob *cb; |
|
886 |
for (cb = first(); cb != NULL; cb = next(cb)) { |
|
887 |
total++; |
|
888 |
if (cb->is_nmethod()) { |
|
889 |
nmethod* nm = (nmethod*)cb; |
|
890 |
||
891 |
if (Verbose && nm->method() != NULL) { |
|
892 |
ResourceMark rm; |
|
893 |
char *method_name = nm->method()->name_and_sig_as_C_string(); |
|
894 |
tty->print("%s", method_name); |
|
895 |
if(nm->is_alive()) { tty->print_cr(" alive"); } |
|
896 |
if(nm->is_not_entrant()) { tty->print_cr(" not-entrant"); } |
|
897 |
if(nm->is_zombie()) { tty->print_cr(" zombie"); } |
|
898 |
} |
|
899 |
||
900 |
nmethodCount++; |
|
901 |
||
902 |
if(nm->is_alive()) { nmethodAlive++; } |
|
903 |
if(nm->is_not_entrant()) { nmethodNotEntrant++; } |
|
904 |
if(nm->is_zombie()) { nmethodZombie++; } |
|
905 |
if(nm->is_unloaded()) { nmethodUnloaded++; } |
|
906 |
if(nm->is_native_method()) { nmethodNative++; } |
|
907 |
||
908 |
if(nm->method() != NULL && nm->is_java_method()) { |
|
909 |
nmethodJava++; |
|
6418 | 910 |
if (nm->insts_size() > maxCodeSize) { |
911 |
maxCodeSize = nm->insts_size(); |
|
1 | 912 |
} |
913 |
} |
|
914 |
} else if (cb->is_runtime_stub()) { |
|
915 |
runtimeStubCount++; |
|
916 |
} else if (cb->is_deoptimization_stub()) { |
|
917 |
deoptimizationStubCount++; |
|
918 |
} else if (cb->is_uncommon_trap_stub()) { |
|
919 |
uncommonTrapStubCount++; |
|
920 |
} else if (cb->is_adapter_blob()) { |
|
921 |
adapterCount++; |
|
922 |
} else if (cb->is_buffer_blob()) { |
|
923 |
bufferBlobCount++; |
|
924 |
} |
|
925 |
} |
|
926 |
||
927 |
int bucketSize = 512; |
|
928 |
int bucketLimit = maxCodeSize / bucketSize + 1; |
|
13195 | 929 |
int *buckets = NEW_C_HEAP_ARRAY(int, bucketLimit, mtCode); |
1 | 930 |
memset(buckets,0,sizeof(int) * bucketLimit); |
931 |
||
932 |
for (cb = first(); cb != NULL; cb = next(cb)) { |
|
933 |
if (cb->is_nmethod()) { |
|
934 |
nmethod* nm = (nmethod*)cb; |
|
935 |
if(nm->is_java_method()) { |
|
6418 | 936 |
buckets[nm->insts_size() / bucketSize]++; |
1 | 937 |
} |
938 |
} |
|
939 |
} |
|
940 |
tty->print_cr("Code Cache Entries (total of %d)",total); |
|
941 |
tty->print_cr("-------------------------------------------------"); |
|
942 |
tty->print_cr("nmethods: %d",nmethodCount); |
|
943 |
tty->print_cr("\talive: %d",nmethodAlive); |
|
944 |
tty->print_cr("\tnot_entrant: %d",nmethodNotEntrant); |
|
945 |
tty->print_cr("\tzombie: %d",nmethodZombie); |
|
946 |
tty->print_cr("\tunloaded: %d",nmethodUnloaded); |
|
947 |
tty->print_cr("\tjava: %d",nmethodJava); |
|
948 |
tty->print_cr("\tnative: %d",nmethodNative); |
|
949 |
tty->print_cr("runtime_stubs: %d",runtimeStubCount); |
|
950 |
tty->print_cr("adapters: %d",adapterCount); |
|
951 |
tty->print_cr("buffer blobs: %d",bufferBlobCount); |
|
952 |
tty->print_cr("deoptimization_stubs: %d",deoptimizationStubCount); |
|
953 |
tty->print_cr("uncommon_traps: %d",uncommonTrapStubCount); |
|
954 |
tty->print_cr("\nnmethod size distribution (non-zombie java)"); |
|
955 |
tty->print_cr("-------------------------------------------------"); |
|
956 |
||
957 |
for(int i=0; i<bucketLimit; i++) { |
|
958 |
if(buckets[i] != 0) { |
|
959 |
tty->print("%d - %d bytes",i*bucketSize,(i+1)*bucketSize); |
|
960 |
tty->fill_to(40); |
|
961 |
tty->print_cr("%d",buckets[i]); |
|
962 |
} |
|
963 |
} |
|
964 |
||
13195 | 965 |
FREE_C_HEAP_ARRAY(int, buckets, mtCode); |
1 | 966 |
} |
967 |
||
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8005204: Code Cache Reduction: command line options implementation
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changeset
|
968 |
#endif // !PRODUCT |
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8005204: Code Cache Reduction: command line options implementation
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|
969 |
|
1 | 970 |
void CodeCache::print() { |
15201
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|
971 |
print_summary(tty); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
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parents:
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changeset
|
972 |
|
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
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diff
changeset
|
973 |
#ifndef PRODUCT |
f3d755b11424
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|
974 |
if (!Verbose) return; |
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changeset
|
975 |
|
1 | 976 |
CodeBlob_sizes live; |
977 |
CodeBlob_sizes dead; |
|
978 |
||
979 |
FOR_ALL_BLOBS(p) { |
|
980 |
if (!p->is_alive()) { |
|
981 |
dead.add(p); |
|
982 |
} else { |
|
983 |
live.add(p); |
|
984 |
} |
|
985 |
} |
|
986 |
||
987 |
tty->print_cr("CodeCache:"); |
|
988 |
||
989 |
tty->print_cr("nmethod dependency checking time %f", dependentCheckTime.seconds(), |
|
990 |
dependentCheckTime.seconds() / dependentCheckCount); |
|
991 |
||
992 |
if (!live.is_empty()) { |
|
993 |
live.print("live"); |
|
994 |
} |
|
995 |
if (!dead.is_empty()) { |
|
996 |
dead.print("dead"); |
|
997 |
} |
|
998 |
||
999 |
||
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changeset
|
1000 |
if (WizardMode) { |
1 | 1001 |
// print the oop_map usage |
1002 |
int code_size = 0; |
|
1003 |
int number_of_blobs = 0; |
|
1004 |
int number_of_oop_maps = 0; |
|
1005 |
int map_size = 0; |
|
1006 |
FOR_ALL_BLOBS(p) { |
|
1007 |
if (p->is_alive()) { |
|
1008 |
number_of_blobs++; |
|
6418 | 1009 |
code_size += p->code_size(); |
1 | 1010 |
OopMapSet* set = p->oop_maps(); |
1011 |
if (set != NULL) { |
|
1012 |
number_of_oop_maps += set->size(); |
|
6418 | 1013 |
map_size += set->heap_size(); |
1 | 1014 |
} |
1015 |
} |
|
1016 |
} |
|
1017 |
tty->print_cr("OopMaps"); |
|
1018 |
tty->print_cr(" #blobs = %d", number_of_blobs); |
|
1019 |
tty->print_cr(" code size = %d", code_size); |
|
1020 |
tty->print_cr(" #oop_maps = %d", number_of_oop_maps); |
|
1021 |
tty->print_cr(" map size = %d", map_size); |
|
1022 |
} |
|
1023 |
||
15201
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8005204: Code Cache Reduction: command line options implementation
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diff
changeset
|
1024 |
#endif // !PRODUCT |
1 | 1025 |
} |
1026 |
||
15201
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8005204: Code Cache Reduction: command line options implementation
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diff
changeset
|
1027 |
void CodeCache::print_summary(outputStream* st, bool detailed) { |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
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parents:
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diff
changeset
|
1028 |
size_t total = (_heap->high_boundary() - _heap->low_boundary()); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
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parents:
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diff
changeset
|
1029 |
st->print_cr("CodeCache: size=" SIZE_FORMAT "Kb used=" SIZE_FORMAT |
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
1030 |
"Kb max_used=" SIZE_FORMAT "Kb free=" SIZE_FORMAT "Kb", |
15201
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8005204: Code Cache Reduction: command line options implementation
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diff
changeset
|
1031 |
total/K, (total - unallocated_capacity())/K, |
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
1032 |
maxCodeCacheUsed/K, unallocated_capacity()/K); |
7108 | 1033 |
|
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
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parents:
13878
diff
changeset
|
1034 |
if (detailed) { |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
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diff
changeset
|
1035 |
st->print_cr(" bounds [" INTPTR_FORMAT ", " INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
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parents:
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diff
changeset
|
1036 |
_heap->low_boundary(), |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
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diff
changeset
|
1037 |
_heap->high(), |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
1038 |
_heap->high_boundary()); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
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parents:
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diff
changeset
|
1039 |
st->print_cr(" total_blobs=" UINT32_FORMAT " nmethods=" UINT32_FORMAT |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
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diff
changeset
|
1040 |
" adapters=" UINT32_FORMAT, |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
1041 |
nof_blobs(), nof_nmethods(), nof_adapters()); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
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diff
changeset
|
1042 |
st->print_cr(" compilation: %s", CompileBroker::should_compile_new_jobs() ? |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
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diff
changeset
|
1043 |
"enabled" : Arguments::mode() == Arguments::_int ? |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
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diff
changeset
|
1044 |
"disabled (interpreter mode)" : |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
1045 |
"disabled (not enough contiguous free space left)"); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
1046 |
} |
7108 | 1047 |
} |
8672
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
1048 |
|
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
1049 |
void CodeCache::log_state(outputStream* st) { |
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
1050 |
st->print(" total_blobs='" UINT32_FORMAT "' nmethods='" UINT32_FORMAT "'" |
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
1051 |
" adapters='" UINT32_FORMAT "' free_code_cache='" SIZE_FORMAT "'", |
8672
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
1052 |
nof_blobs(), nof_nmethods(), nof_adapters(), |
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
1053 |
unallocated_capacity()); |
8672
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
1054 |
} |
9113
e53283b68ac7
7033779: CodeCache::largest_free_block may need to hold the CodeCache lock
never
parents:
8725
diff
changeset
|
1055 |