author | iveresov |
Fri, 05 Sep 2014 14:39:45 -0700 | |
changeset 26580 | 8cca7fbe77b8 |
parent 25492 | d27050bdfb04 |
child 26587 | e8b28fa936af |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "code/codeBlob.hpp" |
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#include "code/codeCache.hpp" |
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#include "code/compiledIC.hpp" |
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#include "code/dependencies.hpp" |
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#include "code/icBuffer.hpp" |
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#include "code/nmethod.hpp" |
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#include "code/pcDesc.hpp" |
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#include "compiler/compileBroker.hpp" |
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#include "gc_implementation/shared/markSweep.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/gcLocker.hpp" |
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#include "memory/iterator.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/method.hpp" |
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#include "oops/objArrayOop.hpp" |
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#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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#include "runtime/mutexLocker.hpp" |
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#include "services/memoryService.hpp" |
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#include "trace/tracing.hpp" |
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#include "utilities/xmlstream.hpp" |
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// Helper class for printing in CodeCache |
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||
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class CodeBlob_sizes { |
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private: |
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int count; |
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int total_size; |
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int header_size; |
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int code_size; |
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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; |
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int scopes_data_size; |
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int scopes_pcs_size; |
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public: |
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CodeBlob_sizes() { |
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count = 0; |
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total_size = 0; |
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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; |
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scopes_pcs_size = 0; |
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} |
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int total() { return total_size; } |
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bool is_empty() { return count == 0; } |
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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%%, metadata %d%%, data %d%%, pcs %d%%])", |
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count, |
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title, |
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(int)(total() / K), |
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header_size * 100 / total_size, |
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relocation_size * 100 / total_size, |
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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, |
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scopes_pcs_size * 100 / total_size); |
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} |
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void add(CodeBlob* cb) { |
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count++; |
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total_size += cb->size(); |
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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(); |
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scopes_pcs_size += nm->scopes_pcs_size(); |
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} else { |
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code_size += cb->code_size(); |
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} |
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} |
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}; |
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// CodeCache implementation |
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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; |
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int CodeCache::_number_of_nmethods_with_dependencies = 0; |
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bool CodeCache::_needs_cache_clean = false; |
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nmethod* CodeCache::_scavenge_root_nmethods = NULL; |
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int CodeCache::_codemem_full_count = 0; |
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CodeBlob* CodeCache::first() { |
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assert_locked_or_safepoint(CodeCache_lock); |
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return (CodeBlob*)_heap->first(); |
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} |
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CodeBlob* CodeCache::next(CodeBlob* cb) { |
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assert_locked_or_safepoint(CodeCache_lock); |
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return (CodeBlob*)_heap->next(cb); |
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} |
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CodeBlob* CodeCache::alive(CodeBlob *cb) { |
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assert_locked_or_safepoint(CodeCache_lock); |
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while (cb != NULL && !cb->is_alive()) cb = next(cb); |
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return cb; |
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} |
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nmethod* CodeCache::alive_nmethod(CodeBlob* cb) { |
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assert_locked_or_safepoint(CodeCache_lock); |
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while (cb != NULL && (!cb->is_alive() || !cb->is_nmethod())) cb = next(cb); |
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return (nmethod*)cb; |
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} |
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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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} |
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static size_t maxCodeCacheUsed = 0; |
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CodeBlob* CodeCache::allocate(int size, bool is_critical) { |
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// Do not seize the CodeCache lock here--if the caller has not |
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// already done so, we are going to lose bigtime, since the code |
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// cache will contain a garbage CodeBlob until the caller can |
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// run the constructor for the CodeBlob subclass he is busy |
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// instantiating. |
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assert_locked_or_safepoint(CodeCache_lock); |
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assert(size > 0, "allocation request must be reasonable"); |
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if (size <= 0) { |
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return NULL; |
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} |
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CodeBlob* cb = NULL; |
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while (true) { |
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cb = (CodeBlob*)_heap->allocate(size, is_critical); |
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if (cb != NULL) break; |
190 |
if (!_heap->expand_by(CodeCacheExpansionSize)) { |
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191 |
// Expansion failed |
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return NULL; |
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} |
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if (PrintCodeCacheExtension) { |
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ResourceMark rm; |
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tty->print_cr("code cache extended to [" INTPTR_FORMAT ", " INTPTR_FORMAT "] (" SSIZE_FORMAT " bytes)", |
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(intptr_t)_heap->low_boundary(), (intptr_t)_heap->high(), |
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(address)_heap->high() - (address)_heap->low_boundary()); |
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} |
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} |
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maxCodeCacheUsed = MAX2(maxCodeCacheUsed, ((address)_heap->high_boundary() - |
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(address)_heap->low_boundary()) - unallocated_capacity()); |
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print_trace("allocation", cb, size); |
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_number_of_blobs++; |
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return cb; |
206 |
} |
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207 |
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208 |
void CodeCache::free(CodeBlob* cb) { |
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209 |
assert_locked_or_safepoint(CodeCache_lock); |
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210 |
||
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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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} |
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} |
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if (cb->is_adapter_blob()) { |
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_number_of_adapters--; |
1 | 220 |
} |
221 |
_number_of_blobs--; |
|
222 |
||
223 |
_heap->deallocate(cb); |
|
224 |
||
225 |
assert(_number_of_blobs >= 0, "sanity check"); |
|
226 |
} |
|
227 |
||
228 |
||
229 |
void CodeCache::commit(CodeBlob* cb) { |
|
230 |
// this is called by nmethod::nmethod, which must already own CodeCache_lock |
|
231 |
assert_locked_or_safepoint(CodeCache_lock); |
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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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} |
1 | 237 |
} |
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if (cb->is_adapter_blob()) { |
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_number_of_adapters++; |
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} |
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|
1 | 242 |
// flush the hardware I-cache |
6418 | 243 |
ICache::invalidate_range(cb->content_begin(), cb->content_size()); |
1 | 244 |
} |
245 |
||
246 |
||
247 |
// Iteration over CodeBlobs |
|
248 |
||
249 |
#define FOR_ALL_BLOBS(var) for (CodeBlob *var = first() ; var != NULL; var = next(var) ) |
|
250 |
#define FOR_ALL_ALIVE_BLOBS(var) for (CodeBlob *var = alive(first()); var != NULL; var = alive(next(var))) |
|
251 |
#define FOR_ALL_ALIVE_NMETHODS(var) for (nmethod *var = alive_nmethod(first()); var != NULL; var = alive_nmethod(next(var))) |
|
252 |
||
253 |
||
254 |
bool CodeCache::contains(void *p) { |
|
255 |
// It should be ok to call contains without holding a lock |
|
256 |
return _heap->contains(p); |
|
257 |
} |
|
258 |
||
259 |
||
260 |
// This method is safe to call without holding the CodeCache_lock, as long as a dead codeblob is not |
|
261 |
// looked up (i.e., one that has been marked for deletion). It only dependes on the _segmap to contain |
|
262 |
// valid indices, which it will always do, as long as the CodeBlob is not in the process of being recycled. |
|
263 |
CodeBlob* CodeCache::find_blob(void* start) { |
|
264 |
CodeBlob* result = find_blob_unsafe(start); |
|
265 |
if (result == NULL) return NULL; |
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|
266 |
// We could potentially look up non_entrant methods |
1 | 267 |
guarantee(!result->is_zombie() || result->is_locked_by_vm() || is_error_reported(), "unsafe access to zombie method"); |
268 |
return result; |
|
269 |
} |
|
270 |
||
271 |
nmethod* CodeCache::find_nmethod(void* start) { |
|
272 |
CodeBlob *cb = find_blob(start); |
|
273 |
assert(cb == NULL || cb->is_nmethod(), "did not find an nmethod"); |
|
274 |
return (nmethod*)cb; |
|
275 |
} |
|
276 |
||
277 |
||
278 |
void CodeCache::blobs_do(void f(CodeBlob* nm)) { |
|
279 |
assert_locked_or_safepoint(CodeCache_lock); |
|
280 |
FOR_ALL_BLOBS(p) { |
|
281 |
f(p); |
|
282 |
} |
|
283 |
} |
|
284 |
||
285 |
||
286 |
void CodeCache::nmethods_do(void f(nmethod* nm)) { |
|
287 |
assert_locked_or_safepoint(CodeCache_lock); |
|
288 |
FOR_ALL_BLOBS(nm) { |
|
289 |
if (nm->is_nmethod()) f((nmethod*)nm); |
|
290 |
} |
|
291 |
} |
|
292 |
||
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293 |
void CodeCache::alive_nmethods_do(void f(nmethod* nm)) { |
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|
294 |
assert_locked_or_safepoint(CodeCache_lock); |
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|
295 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
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|
296 |
f(nm); |
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|
297 |
} |
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|
298 |
} |
1 | 299 |
|
300 |
int CodeCache::alignment_unit() { |
|
301 |
return (int)_heap->alignment_unit(); |
|
302 |
} |
|
303 |
||
304 |
||
305 |
int CodeCache::alignment_offset() { |
|
306 |
return (int)_heap->alignment_offset(); |
|
307 |
} |
|
308 |
||
309 |
||
5686
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|
310 |
// Mark nmethods for unloading if they contain otherwise unreachable |
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|
311 |
// oops. |
13878
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|
312 |
void CodeCache::do_unloading(BoolObjectClosure* is_alive, bool unloading_occurred) { |
1 | 313 |
assert_locked_or_safepoint(CodeCache_lock); |
5686
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changeset
|
314 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
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|
315 |
nm->do_unloading(is_alive, unloading_occurred); |
1 | 316 |
} |
317 |
} |
|
318 |
||
3908 | 319 |
void CodeCache::blobs_do(CodeBlobClosure* f) { |
1 | 320 |
assert_locked_or_safepoint(CodeCache_lock); |
321 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
3908 | 322 |
f->do_code_blob(cb); |
323 |
||
324 |
#ifdef ASSERT |
|
325 |
if (cb->is_nmethod()) |
|
326 |
((nmethod*)cb)->verify_scavenge_root_oops(); |
|
327 |
#endif //ASSERT |
|
1 | 328 |
} |
329 |
} |
|
330 |
||
3908 | 331 |
// Walk the list of methods which might contain non-perm oops. |
332 |
void CodeCache::scavenge_root_nmethods_do(CodeBlobClosure* f) { |
|
333 |
assert_locked_or_safepoint(CodeCache_lock); |
|
25492
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|
334 |
|
d27050bdfb04
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|
335 |
if (UseG1GC) { |
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|
336 |
return; |
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|
337 |
} |
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|
338 |
|
3908 | 339 |
debug_only(mark_scavenge_root_nmethods()); |
340 |
||
341 |
for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) { |
|
342 |
debug_only(cur->clear_scavenge_root_marked()); |
|
343 |
assert(cur->scavenge_root_not_marked(), ""); |
|
344 |
assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); |
|
345 |
||
346 |
bool is_live = (!cur->is_zombie() && !cur->is_unloaded()); |
|
347 |
#ifndef PRODUCT |
|
348 |
if (TraceScavenge) { |
|
349 |
cur->print_on(tty, is_live ? "scavenge root" : "dead scavenge root"); tty->cr(); |
|
350 |
} |
|
351 |
#endif //PRODUCT |
|
5247
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diff
changeset
|
352 |
if (is_live) { |
3908 | 353 |
// Perform cur->oops_do(f), maybe just once per nmethod. |
354 |
f->do_code_blob(cur); |
|
5247
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6940520: CodeCache::scavenge_root_nmethods_do must fix oop relocations
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diff
changeset
|
355 |
} |
3908 | 356 |
} |
357 |
||
358 |
// Check for stray marks. |
|
359 |
debug_only(verify_perm_nmethods(NULL)); |
|
360 |
} |
|
361 |
||
362 |
void CodeCache::add_scavenge_root_nmethod(nmethod* nm) { |
|
363 |
assert_locked_or_safepoint(CodeCache_lock); |
|
25492
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changeset
|
364 |
|
d27050bdfb04
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diff
changeset
|
365 |
if (UseG1GC) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
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diff
changeset
|
366 |
return; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
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diff
changeset
|
367 |
} |
d27050bdfb04
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changeset
|
368 |
|
3908 | 369 |
nm->set_on_scavenge_root_list(); |
370 |
nm->set_scavenge_root_link(_scavenge_root_nmethods); |
|
371 |
set_scavenge_root_nmethods(nm); |
|
372 |
print_trace("add_scavenge_root", nm); |
|
373 |
} |
|
374 |
||
375 |
void CodeCache::drop_scavenge_root_nmethod(nmethod* nm) { |
|
376 |
assert_locked_or_safepoint(CodeCache_lock); |
|
25492
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8049421: G1 Class Unloading after completing a concurrent mark cycle
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parents:
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diff
changeset
|
377 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
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parents:
25491
diff
changeset
|
378 |
if (UseG1GC) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
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diff
changeset
|
379 |
return; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
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parents:
25491
diff
changeset
|
380 |
} |
d27050bdfb04
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parents:
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diff
changeset
|
381 |
|
3908 | 382 |
print_trace("drop_scavenge_root", nm); |
383 |
nmethod* last = NULL; |
|
384 |
nmethod* cur = scavenge_root_nmethods(); |
|
385 |
while (cur != NULL) { |
|
386 |
nmethod* next = cur->scavenge_root_link(); |
|
387 |
if (cur == nm) { |
|
388 |
if (last != NULL) |
|
389 |
last->set_scavenge_root_link(next); |
|
390 |
else set_scavenge_root_nmethods(next); |
|
391 |
nm->set_scavenge_root_link(NULL); |
|
392 |
nm->clear_on_scavenge_root_list(); |
|
393 |
return; |
|
394 |
} |
|
395 |
last = cur; |
|
396 |
cur = next; |
|
397 |
} |
|
398 |
assert(false, "should have been on list"); |
|
399 |
} |
|
400 |
||
401 |
void CodeCache::prune_scavenge_root_nmethods() { |
|
402 |
assert_locked_or_safepoint(CodeCache_lock); |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
403 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
404 |
if (UseG1GC) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
405 |
return; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
406 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
407 |
|
3908 | 408 |
debug_only(mark_scavenge_root_nmethods()); |
409 |
||
410 |
nmethod* last = NULL; |
|
411 |
nmethod* cur = scavenge_root_nmethods(); |
|
412 |
while (cur != NULL) { |
|
413 |
nmethod* next = cur->scavenge_root_link(); |
|
414 |
debug_only(cur->clear_scavenge_root_marked()); |
|
415 |
assert(cur->scavenge_root_not_marked(), ""); |
|
416 |
assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); |
|
417 |
||
418 |
if (!cur->is_zombie() && !cur->is_unloaded() |
|
419 |
&& cur->detect_scavenge_root_oops()) { |
|
420 |
// Keep it. Advance 'last' to prevent deletion. |
|
421 |
last = cur; |
|
422 |
} else { |
|
423 |
// Prune it from the list, so we don't have to look at it any more. |
|
424 |
print_trace("prune_scavenge_root", cur); |
|
425 |
cur->set_scavenge_root_link(NULL); |
|
426 |
cur->clear_on_scavenge_root_list(); |
|
427 |
if (last != NULL) |
|
428 |
last->set_scavenge_root_link(next); |
|
429 |
else set_scavenge_root_nmethods(next); |
|
430 |
} |
|
431 |
cur = next; |
|
432 |
} |
|
433 |
||
434 |
// Check for stray marks. |
|
435 |
debug_only(verify_perm_nmethods(NULL)); |
|
436 |
} |
|
437 |
||
438 |
#ifndef PRODUCT |
|
439 |
void CodeCache::asserted_non_scavengable_nmethods_do(CodeBlobClosure* f) { |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
440 |
if (UseG1GC) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
441 |
return; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
442 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
443 |
|
3908 | 444 |
// While we are here, verify the integrity of the list. |
445 |
mark_scavenge_root_nmethods(); |
|
446 |
for (nmethod* cur = scavenge_root_nmethods(); cur != NULL; cur = cur->scavenge_root_link()) { |
|
447 |
assert(cur->on_scavenge_root_list(), "else shouldn't be on this list"); |
|
448 |
cur->clear_scavenge_root_marked(); |
|
449 |
} |
|
450 |
verify_perm_nmethods(f); |
|
451 |
} |
|
452 |
||
453 |
// Temporarily mark nmethods that are claimed to be on the non-perm list. |
|
454 |
void CodeCache::mark_scavenge_root_nmethods() { |
|
455 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
456 |
if (cb->is_nmethod()) { |
|
457 |
nmethod *nm = (nmethod*)cb; |
|
458 |
assert(nm->scavenge_root_not_marked(), "clean state"); |
|
459 |
if (nm->on_scavenge_root_list()) |
|
460 |
nm->set_scavenge_root_marked(); |
|
461 |
} |
|
462 |
} |
|
463 |
} |
|
464 |
||
465 |
// If the closure is given, run it on the unlisted nmethods. |
|
466 |
// Also make sure that the effects of mark_scavenge_root_nmethods is gone. |
|
467 |
void CodeCache::verify_perm_nmethods(CodeBlobClosure* f_or_null) { |
|
468 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
469 |
bool call_f = (f_or_null != NULL); |
|
470 |
if (cb->is_nmethod()) { |
|
471 |
nmethod *nm = (nmethod*)cb; |
|
472 |
assert(nm->scavenge_root_not_marked(), "must be already processed"); |
|
473 |
if (nm->on_scavenge_root_list()) |
|
474 |
call_f = false; // don't show this one to the client |
|
475 |
nm->verify_scavenge_root_oops(); |
|
476 |
} else { |
|
477 |
call_f = false; // not an nmethod |
|
478 |
} |
|
479 |
if (call_f) f_or_null->do_code_blob(cb); |
|
480 |
} |
|
481 |
} |
|
482 |
#endif //PRODUCT |
|
483 |
||
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
484 |
void CodeCache::verify_clean_inline_caches() { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
485 |
#ifdef ASSERT |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
486 |
FOR_ALL_ALIVE_BLOBS(cb) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
487 |
if (cb->is_nmethod()) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
488 |
nmethod* nm = (nmethod*)cb; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
489 |
assert(!nm->is_unloaded(), "Tautology"); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
490 |
nm->verify_clean_inline_caches(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
491 |
nm->verify(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
492 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
493 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
494 |
#endif |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
495 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
496 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
497 |
void CodeCache::verify_icholder_relocations() { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
498 |
#ifdef ASSERT |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
499 |
// make sure that we aren't leaking icholders |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
500 |
int count = 0; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
501 |
FOR_ALL_BLOBS(cb) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
502 |
if (cb->is_nmethod()) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
503 |
nmethod* nm = (nmethod*)cb; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
504 |
count += nm->verify_icholder_relocations(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
505 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
506 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
507 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
508 |
assert(count + InlineCacheBuffer::pending_icholder_count() + CompiledICHolder::live_not_claimed_count() == |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
509 |
CompiledICHolder::live_count(), "must agree"); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
510 |
#endif |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
511 |
} |
4750 | 512 |
|
1 | 513 |
void CodeCache::gc_prologue() { |
514 |
} |
|
515 |
||
516 |
void CodeCache::gc_epilogue() { |
|
517 |
assert_locked_or_safepoint(CodeCache_lock); |
|
518 |
FOR_ALL_ALIVE_BLOBS(cb) { |
|
519 |
if (cb->is_nmethod()) { |
|
520 |
nmethod *nm = (nmethod*)cb; |
|
521 |
assert(!nm->is_unloaded(), "Tautology"); |
|
522 |
if (needs_cache_clean()) { |
|
523 |
nm->cleanup_inline_caches(); |
|
524 |
} |
|
5686
5435e77aa3df
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
5533
diff
changeset
|
525 |
DEBUG_ONLY(nm->verify()); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
526 |
DEBUG_ONLY(nm->verify_oop_relocations()); |
1 | 527 |
} |
528 |
} |
|
529 |
set_needs_cache_clean(false); |
|
3908 | 530 |
prune_scavenge_root_nmethods(); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
531 |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
532 |
verify_icholder_relocations(); |
1 | 533 |
} |
534 |
||
8724
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
535 |
void CodeCache::verify_oops() { |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
536 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
537 |
VerifyOopClosure voc; |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
538 |
FOR_ALL_ALIVE_BLOBS(cb) { |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
539 |
if (cb->is_nmethod()) { |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
540 |
nmethod *nm = (nmethod*)cb; |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
541 |
nm->oops_do(&voc); |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
542 |
nm->verify_oop_relocations(); |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
543 |
} |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
544 |
} |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
545 |
} |
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
546 |
|
693c6b883b54
7028374: race in fix_oop_relocations for scavengeable nmethods
never
parents:
8672
diff
changeset
|
547 |
|
1 | 548 |
address CodeCache::first_address() { |
549 |
assert_locked_or_safepoint(CodeCache_lock); |
|
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
550 |
return (address)_heap->low_boundary(); |
1 | 551 |
} |
552 |
||
553 |
||
554 |
address CodeCache::last_address() { |
|
555 |
assert_locked_or_safepoint(CodeCache_lock); |
|
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
556 |
return (address)_heap->high(); |
1 | 557 |
} |
558 |
||
17617
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
559 |
/** |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
560 |
* 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
|
561 |
* 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
|
562 |
*/ |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
563 |
double CodeCache::reverse_free_ratio() { |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
564 |
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
|
565 |
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
|
566 |
return max_capacity / unallocated_capacity; |
4e330bce1812
8012371: Adjust Tiered compile threshold according to available space in code cache
anoll
parents:
17132
diff
changeset
|
567 |
} |
1 | 568 |
|
569 |
void icache_init(); |
|
570 |
||
571 |
void CodeCache::initialize() { |
|
572 |
assert(CodeCacheSegmentSize >= (uintx)CodeEntryAlignment, "CodeCacheSegmentSize must be large enough to align entry points"); |
|
573 |
#ifdef COMPILER2 |
|
574 |
assert(CodeCacheSegmentSize >= (uintx)OptoLoopAlignment, "CodeCacheSegmentSize must be large enough to align inner loops"); |
|
575 |
#endif |
|
576 |
assert(CodeCacheSegmentSize >= sizeof(jdouble), "CodeCacheSegmentSize must be large enough to align constants"); |
|
577 |
// This was originally just a check of the alignment, causing failure, instead, round |
|
578 |
// the code cache to the page size. In particular, Solaris is moving to a larger |
|
579 |
// default page size. |
|
580 |
CodeCacheExpansionSize = round_to(CodeCacheExpansionSize, os::vm_page_size()); |
|
581 |
InitialCodeCacheSize = round_to(InitialCodeCacheSize, os::vm_page_size()); |
|
582 |
ReservedCodeCacheSize = round_to(ReservedCodeCacheSize, os::vm_page_size()); |
|
583 |
if (!_heap->reserve(ReservedCodeCacheSize, InitialCodeCacheSize, CodeCacheSegmentSize)) { |
|
584 |
vm_exit_during_initialization("Could not reserve enough space for code cache"); |
|
585 |
} |
|
586 |
||
587 |
MemoryService::add_code_heap_memory_pool(_heap); |
|
588 |
||
589 |
// Initialize ICache flush mechanism |
|
590 |
// This service is needed for os::register_code_area |
|
591 |
icache_init(); |
|
592 |
||
593 |
// Give OS a chance to register generated code area. |
|
594 |
// This is used on Windows 64 bit platforms to register |
|
595 |
// Structured Exception Handlers for our generated code. |
|
596 |
os::register_code_area(_heap->low_boundary(), _heap->high_boundary()); |
|
597 |
} |
|
598 |
||
599 |
||
600 |
void codeCache_init() { |
|
601 |
CodeCache::initialize(); |
|
602 |
} |
|
603 |
||
604 |
//------------------------------------------------------------------------------------------------ |
|
605 |
||
606 |
int CodeCache::number_of_nmethods_with_dependencies() { |
|
607 |
return _number_of_nmethods_with_dependencies; |
|
608 |
} |
|
609 |
||
610 |
void CodeCache::clear_inline_caches() { |
|
611 |
assert_locked_or_safepoint(CodeCache_lock); |
|
612 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
613 |
nm->clear_inline_caches(); |
|
614 |
} |
|
615 |
} |
|
616 |
||
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
617 |
// Keeps track of time spent for checking dependencies |
22921
ee35d5c0b1dc
8034839: jvm hangs with gc/gctests/LoadUnloadGC test
anoll
parents:
22506
diff
changeset
|
618 |
NOT_PRODUCT(static elapsedTimer dependentCheckTime;) |
1 | 619 |
|
620 |
int CodeCache::mark_for_deoptimization(DepChange& changes) { |
|
621 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
622 |
int number_of_marked_CodeBlobs = 0; |
|
623 |
||
624 |
// search the hierarchy looking for nmethods which are affected by the loading of this class |
|
625 |
||
626 |
// then search the interfaces this class implements looking for nmethods |
|
627 |
// which might be dependent of the fact that an interface only had one |
|
628 |
// implementor. |
|
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
629 |
// nmethod::check_all_dependencies works only correctly, if no safepoint |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
630 |
// can happen |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
631 |
No_Safepoint_Verifier nsv; |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
632 |
for (DepChange::ContextStream str(changes, nsv); str.next(); ) { |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
633 |
Klass* d = str.klass(); |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
634 |
number_of_marked_CodeBlobs += InstanceKlass::cast(d)->mark_dependent_nmethods(changes); |
1 | 635 |
} |
636 |
||
637 |
#ifndef PRODUCT |
|
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
638 |
if (VerifyDependencies) { |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
639 |
// Object pointers are used as unique identifiers for dependency arguments. This |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
640 |
// is only possible if no safepoint, i.e., GC occurs during the verification code. |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
641 |
dependentCheckTime.start(); |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
642 |
nmethod::check_all_dependencies(changes); |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
643 |
dependentCheckTime.stop(); |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
644 |
} |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
645 |
#endif |
1 | 646 |
|
647 |
return number_of_marked_CodeBlobs; |
|
648 |
} |
|
649 |
||
650 |
||
651 |
#ifdef HOTSWAP |
|
652 |
int CodeCache::mark_for_evol_deoptimization(instanceKlassHandle dependee) { |
|
653 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
654 |
int number_of_marked_CodeBlobs = 0; |
|
655 |
||
656 |
// 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
|
657 |
Array<Method*>* old_methods = dependee->methods(); |
1 | 658 |
for (int i = 0; i < old_methods->length(); i++) { |
659 |
ResourceMark rm; |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
660 |
Method* old_method = old_methods->at(i); |
1 | 661 |
nmethod *nm = old_method->code(); |
662 |
if (nm != NULL) { |
|
663 |
nm->mark_for_deoptimization(); |
|
664 |
number_of_marked_CodeBlobs++; |
|
665 |
} |
|
666 |
} |
|
667 |
||
668 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
669 |
if (nm->is_marked_for_deoptimization()) { |
|
670 |
// ...Already marked in the previous pass; don't count it again. |
|
671 |
} else if (nm->is_evol_dependent_on(dependee())) { |
|
672 |
ResourceMark rm; |
|
673 |
nm->mark_for_deoptimization(); |
|
674 |
number_of_marked_CodeBlobs++; |
|
675 |
} else { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
676 |
// flush caches in case they refer to a redefined Method* |
1 | 677 |
nm->clear_inline_caches(); |
678 |
} |
|
679 |
} |
|
680 |
||
681 |
return number_of_marked_CodeBlobs; |
|
682 |
} |
|
683 |
#endif // HOTSWAP |
|
684 |
||
685 |
||
686 |
// Deoptimize all methods |
|
687 |
void CodeCache::mark_all_nmethods_for_deoptimization() { |
|
688 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
|
689 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
26580
8cca7fbe77b8
8056154: JVM crash with EXCEPTION_ACCESS_VIOLATION when there are many threads running
iveresov
parents:
25492
diff
changeset
|
690 |
if (!nm->method()->is_method_handle_intrinsic()) { |
8cca7fbe77b8
8056154: JVM crash with EXCEPTION_ACCESS_VIOLATION when there are many threads running
iveresov
parents:
25492
diff
changeset
|
691 |
nm->mark_for_deoptimization(); |
8cca7fbe77b8
8056154: JVM crash with EXCEPTION_ACCESS_VIOLATION when there are many threads running
iveresov
parents:
25492
diff
changeset
|
692 |
} |
1 | 693 |
} |
694 |
} |
|
695 |
||
696 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13391
diff
changeset
|
697 |
int CodeCache::mark_for_deoptimization(Method* dependee) { |
1 | 698 |
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
699 |
int number_of_marked_CodeBlobs = 0; |
|
700 |
||
701 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
702 |
if (nm->is_dependent_on_method(dependee)) { |
|
703 |
ResourceMark rm; |
|
704 |
nm->mark_for_deoptimization(); |
|
705 |
number_of_marked_CodeBlobs++; |
|
706 |
} |
|
707 |
} |
|
708 |
||
709 |
return number_of_marked_CodeBlobs; |
|
710 |
} |
|
711 |
||
712 |
void CodeCache::make_marked_nmethods_zombies() { |
|
713 |
assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint"); |
|
714 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
715 |
if (nm->is_marked_for_deoptimization()) { |
|
716 |
||
717 |
// If the nmethod has already been made non-entrant and it can be converted |
|
718 |
// then zombie it now. Otherwise make it non-entrant and it will eventually |
|
719 |
// be zombied when it is no longer seen on the stack. Note that the nmethod |
|
720 |
// might be "entrant" and not on the stack and so could be zombied immediately |
|
721 |
// but we can't tell because we don't track it on stack until it becomes |
|
722 |
// non-entrant. |
|
723 |
||
724 |
if (nm->is_not_entrant() && nm->can_not_entrant_be_converted()) { |
|
725 |
nm->make_zombie(); |
|
726 |
} else { |
|
727 |
nm->make_not_entrant(); |
|
728 |
} |
|
729 |
} |
|
730 |
} |
|
731 |
} |
|
732 |
||
733 |
void CodeCache::make_marked_nmethods_not_entrant() { |
|
734 |
assert_locked_or_safepoint(CodeCache_lock); |
|
735 |
FOR_ALL_ALIVE_NMETHODS(nm) { |
|
736 |
if (nm->is_marked_for_deoptimization()) { |
|
737 |
nm->make_not_entrant(); |
|
738 |
} |
|
739 |
} |
|
740 |
} |
|
741 |
||
742 |
void CodeCache::verify() { |
|
743 |
_heap->verify(); |
|
744 |
FOR_ALL_ALIVE_BLOBS(p) { |
|
745 |
p->verify(); |
|
746 |
} |
|
747 |
} |
|
748 |
||
18025 | 749 |
void CodeCache::report_codemem_full() { |
750 |
_codemem_full_count++; |
|
751 |
EventCodeCacheFull event; |
|
752 |
if (event.should_commit()) { |
|
753 |
event.set_startAddress((u8)low_bound()); |
|
754 |
event.set_commitedTopAddress((u8)high()); |
|
755 |
event.set_reservedTopAddress((u8)high_bound()); |
|
756 |
event.set_entryCount(nof_blobs()); |
|
757 |
event.set_methodCount(nof_nmethods()); |
|
758 |
event.set_adaptorCount(nof_adapters()); |
|
759 |
event.set_unallocatedCapacity(unallocated_capacity()/K); |
|
760 |
event.set_fullCount(_codemem_full_count); |
|
761 |
event.commit(); |
|
762 |
} |
|
763 |
} |
|
764 |
||
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
765 |
void CodeCache::print_memory_overhead() { |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
766 |
size_t wasted_bytes = 0; |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
767 |
CodeBlob *cb; |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
768 |
for (cb = first(); cb != NULL; cb = next(cb)) { |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
769 |
HeapBlock* heap_block = ((HeapBlock*)cb) - 1; |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
770 |
wasted_bytes += heap_block->length() * CodeCacheSegmentSize - cb->size(); |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
771 |
} |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
772 |
// Print bytes that are allocated in the freelist |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
773 |
ttyLocker ttl; |
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
774 |
tty->print_cr("Number of elements in freelist: " SSIZE_FORMAT, freelist_length()); |
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
775 |
tty->print_cr("Allocated in freelist: " SSIZE_FORMAT "kB", bytes_allocated_in_freelist()/K); |
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
776 |
tty->print_cr("Unused bytes in CodeBlobs: " SSIZE_FORMAT "kB", (wasted_bytes/K)); |
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
777 |
tty->print_cr("Segment map size: " SSIZE_FORMAT "kB", allocated_segments()/K); // 1 byte per segment |
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
778 |
} |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
779 |
|
1 | 780 |
//------------------------------------------------------------------------------------------------ |
781 |
// Non-product version |
|
782 |
||
783 |
#ifndef PRODUCT |
|
784 |
||
3908 | 785 |
void CodeCache::print_trace(const char* event, CodeBlob* cb, int size) { |
786 |
if (PrintCodeCache2) { // Need to add a new flag |
|
787 |
ResourceMark rm; |
|
788 |
if (size == 0) size = cb->size(); |
|
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
789 |
tty->print_cr("CodeCache %s: addr: " INTPTR_FORMAT ", size: 0x%x", event, p2i(cb), size); |
3908 | 790 |
} |
791 |
} |
|
792 |
||
1 | 793 |
void CodeCache::print_internals() { |
794 |
int nmethodCount = 0; |
|
795 |
int runtimeStubCount = 0; |
|
796 |
int adapterCount = 0; |
|
797 |
int deoptimizationStubCount = 0; |
|
798 |
int uncommonTrapStubCount = 0; |
|
799 |
int bufferBlobCount = 0; |
|
800 |
int total = 0; |
|
801 |
int nmethodAlive = 0; |
|
802 |
int nmethodNotEntrant = 0; |
|
803 |
int nmethodZombie = 0; |
|
804 |
int nmethodUnloaded = 0; |
|
805 |
int nmethodJava = 0; |
|
806 |
int nmethodNative = 0; |
|
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
807 |
int max_nm_size = 0; |
1 | 808 |
ResourceMark rm; |
809 |
||
810 |
CodeBlob *cb; |
|
811 |
for (cb = first(); cb != NULL; cb = next(cb)) { |
|
812 |
total++; |
|
813 |
if (cb->is_nmethod()) { |
|
814 |
nmethod* nm = (nmethod*)cb; |
|
815 |
||
816 |
if (Verbose && nm->method() != NULL) { |
|
817 |
ResourceMark rm; |
|
818 |
char *method_name = nm->method()->name_and_sig_as_C_string(); |
|
819 |
tty->print("%s", method_name); |
|
820 |
if(nm->is_alive()) { tty->print_cr(" alive"); } |
|
821 |
if(nm->is_not_entrant()) { tty->print_cr(" not-entrant"); } |
|
822 |
if(nm->is_zombie()) { tty->print_cr(" zombie"); } |
|
823 |
} |
|
824 |
||
825 |
nmethodCount++; |
|
826 |
||
827 |
if(nm->is_alive()) { nmethodAlive++; } |
|
828 |
if(nm->is_not_entrant()) { nmethodNotEntrant++; } |
|
829 |
if(nm->is_zombie()) { nmethodZombie++; } |
|
830 |
if(nm->is_unloaded()) { nmethodUnloaded++; } |
|
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
831 |
if(nm->method() != NULL && nm->is_native_method()) { nmethodNative++; } |
1 | 832 |
|
833 |
if(nm->method() != NULL && nm->is_java_method()) { |
|
834 |
nmethodJava++; |
|
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
835 |
max_nm_size = MAX2(max_nm_size, nm->size()); |
1 | 836 |
} |
837 |
} else if (cb->is_runtime_stub()) { |
|
838 |
runtimeStubCount++; |
|
839 |
} else if (cb->is_deoptimization_stub()) { |
|
840 |
deoptimizationStubCount++; |
|
841 |
} else if (cb->is_uncommon_trap_stub()) { |
|
842 |
uncommonTrapStubCount++; |
|
843 |
} else if (cb->is_adapter_blob()) { |
|
844 |
adapterCount++; |
|
845 |
} else if (cb->is_buffer_blob()) { |
|
846 |
bufferBlobCount++; |
|
847 |
} |
|
848 |
} |
|
849 |
||
850 |
int bucketSize = 512; |
|
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
851 |
int bucketLimit = max_nm_size / bucketSize + 1; |
13195 | 852 |
int *buckets = NEW_C_HEAP_ARRAY(int, bucketLimit, mtCode); |
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
853 |
memset(buckets, 0, sizeof(int) * bucketLimit); |
1 | 854 |
|
855 |
for (cb = first(); cb != NULL; cb = next(cb)) { |
|
856 |
if (cb->is_nmethod()) { |
|
857 |
nmethod* nm = (nmethod*)cb; |
|
858 |
if(nm->is_java_method()) { |
|
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
859 |
buckets[nm->size() / bucketSize]++; |
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
860 |
} |
1 | 861 |
} |
862 |
} |
|
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
863 |
|
1 | 864 |
tty->print_cr("Code Cache Entries (total of %d)",total); |
865 |
tty->print_cr("-------------------------------------------------"); |
|
866 |
tty->print_cr("nmethods: %d",nmethodCount); |
|
867 |
tty->print_cr("\talive: %d",nmethodAlive); |
|
868 |
tty->print_cr("\tnot_entrant: %d",nmethodNotEntrant); |
|
869 |
tty->print_cr("\tzombie: %d",nmethodZombie); |
|
870 |
tty->print_cr("\tunloaded: %d",nmethodUnloaded); |
|
871 |
tty->print_cr("\tjava: %d",nmethodJava); |
|
872 |
tty->print_cr("\tnative: %d",nmethodNative); |
|
873 |
tty->print_cr("runtime_stubs: %d",runtimeStubCount); |
|
874 |
tty->print_cr("adapters: %d",adapterCount); |
|
875 |
tty->print_cr("buffer blobs: %d",bufferBlobCount); |
|
876 |
tty->print_cr("deoptimization_stubs: %d",deoptimizationStubCount); |
|
877 |
tty->print_cr("uncommon_traps: %d",uncommonTrapStubCount); |
|
878 |
tty->print_cr("\nnmethod size distribution (non-zombie java)"); |
|
879 |
tty->print_cr("-------------------------------------------------"); |
|
880 |
||
881 |
for(int i=0; i<bucketLimit; i++) { |
|
882 |
if(buckets[i] != 0) { |
|
883 |
tty->print("%d - %d bytes",i*bucketSize,(i+1)*bucketSize); |
|
884 |
tty->fill_to(40); |
|
885 |
tty->print_cr("%d",buckets[i]); |
|
886 |
} |
|
887 |
} |
|
888 |
||
13195 | 889 |
FREE_C_HEAP_ARRAY(int, buckets, mtCode); |
23214
b6426873cb37
8029799: vm/mlvm/anonloader/stress/oome prints warning: CodeHeap: # of free blocks > 10000
anoll
parents:
22921
diff
changeset
|
890 |
print_memory_overhead(); |
1 | 891 |
} |
892 |
||
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
893 |
#endif // !PRODUCT |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
894 |
|
1 | 895 |
void CodeCache::print() { |
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
896 |
print_summary(tty); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
897 |
|
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
898 |
#ifndef PRODUCT |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
899 |
if (!Verbose) return; |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
900 |
|
1 | 901 |
CodeBlob_sizes live; |
902 |
CodeBlob_sizes dead; |
|
903 |
||
904 |
FOR_ALL_BLOBS(p) { |
|
905 |
if (!p->is_alive()) { |
|
906 |
dead.add(p); |
|
907 |
} else { |
|
908 |
live.add(p); |
|
909 |
} |
|
910 |
} |
|
911 |
||
912 |
tty->print_cr("CodeCache:"); |
|
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20290
diff
changeset
|
913 |
tty->print_cr("nmethod dependency checking time %fs", dependentCheckTime.seconds()); |
1 | 914 |
|
915 |
if (!live.is_empty()) { |
|
916 |
live.print("live"); |
|
917 |
} |
|
918 |
if (!dead.is_empty()) { |
|
919 |
dead.print("dead"); |
|
920 |
} |
|
921 |
||
922 |
||
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
923 |
if (WizardMode) { |
1 | 924 |
// print the oop_map usage |
925 |
int code_size = 0; |
|
926 |
int number_of_blobs = 0; |
|
927 |
int number_of_oop_maps = 0; |
|
928 |
int map_size = 0; |
|
929 |
FOR_ALL_BLOBS(p) { |
|
930 |
if (p->is_alive()) { |
|
931 |
number_of_blobs++; |
|
6418 | 932 |
code_size += p->code_size(); |
1 | 933 |
OopMapSet* set = p->oop_maps(); |
934 |
if (set != NULL) { |
|
935 |
number_of_oop_maps += set->size(); |
|
6418 | 936 |
map_size += set->heap_size(); |
1 | 937 |
} |
938 |
} |
|
939 |
} |
|
940 |
tty->print_cr("OopMaps"); |
|
941 |
tty->print_cr(" #blobs = %d", number_of_blobs); |
|
942 |
tty->print_cr(" code size = %d", code_size); |
|
943 |
tty->print_cr(" #oop_maps = %d", number_of_oop_maps); |
|
944 |
tty->print_cr(" map size = %d", map_size); |
|
945 |
} |
|
946 |
||
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
947 |
#endif // !PRODUCT |
1 | 948 |
} |
949 |
||
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
950 |
void CodeCache::print_summary(outputStream* st, bool detailed) { |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
951 |
size_t total = (_heap->high_boundary() - _heap->low_boundary()); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
952 |
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
|
953 |
"Kb max_used=" SIZE_FORMAT "Kb free=" SIZE_FORMAT "Kb", |
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
954 |
total/K, (total - unallocated_capacity())/K, |
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
955 |
maxCodeCacheUsed/K, unallocated_capacity()/K); |
7108 | 956 |
|
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
957 |
if (detailed) { |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
958 |
st->print_cr(" bounds [" INTPTR_FORMAT ", " INTPTR_FORMAT ", " INTPTR_FORMAT "]", |
24424
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
959 |
p2i(_heap->low_boundary()), |
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
960 |
p2i(_heap->high()), |
2658d7834c6e
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
23214
diff
changeset
|
961 |
p2i(_heap->high_boundary())); |
15201
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
962 |
st->print_cr(" total_blobs=" UINT32_FORMAT " nmethods=" UINT32_FORMAT |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
963 |
" adapters=" UINT32_FORMAT, |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
964 |
nof_blobs(), nof_nmethods(), nof_adapters()); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
965 |
st->print_cr(" compilation: %s", CompileBroker::should_compile_new_jobs() ? |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
966 |
"enabled" : Arguments::mode() == Arguments::_int ? |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
967 |
"disabled (interpreter mode)" : |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
968 |
"disabled (not enough contiguous free space left)"); |
f3d755b11424
8005204: Code Cache Reduction: command line options implementation
vladidan
parents:
13878
diff
changeset
|
969 |
} |
7108 | 970 |
} |
8672
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
971 |
|
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
972 |
void CodeCache::log_state(outputStream* st) { |
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
973 |
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
|
974 |
" 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
|
975 |
nof_blobs(), nof_nmethods(), nof_adapters(), |
17016
78b1c3670525
8006952: Slow VM due to excessive code cache freelist iteration
neliasso
parents:
15201
diff
changeset
|
976 |
unallocated_capacity()); |
8672
26a427ab6f32
7025742: Can not use CodeCache::unallocated_capacity() with fragmented CodeCache
kvn
parents:
7715
diff
changeset
|
977 |
} |
9113
e53283b68ac7
7033779: CodeCache::largest_free_block may need to hold the CodeCache lock
never
parents:
8725
diff
changeset
|
978 |