author | jwilhelm |
Thu, 03 Oct 2013 21:36:29 +0200 | |
changeset 20398 | b206c580c45f |
parent 20310 | 903b398490d9 |
child 21117 | 89fa6b136f85 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "gc_implementation/g1/concurrentG1Refine.hpp" |
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#include "gc_implementation/g1/concurrentG1RefineThread.hpp" |
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#include "gc_implementation/g1/heapRegion.hpp" |
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#include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
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#include "gc_implementation/g1/g1RemSet.inline.hpp" |
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#include "gc_implementation/g1/g1RemSetSummary.hpp" |
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#include "gc_implementation/g1/heapRegionRemSet.hpp" |
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#include "runtime/thread.inline.hpp" |
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|
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class GetRSThreadVTimeClosure : public ThreadClosure { |
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private: |
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G1RemSetSummary* _summary; |
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uint _counter; |
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|
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public: |
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GetRSThreadVTimeClosure(G1RemSetSummary * summary) : ThreadClosure(), _summary(summary), _counter(0) { |
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assert(_summary != NULL, "just checking"); |
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} |
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|
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virtual void do_thread(Thread* t) { |
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ConcurrentG1RefineThread* crt = (ConcurrentG1RefineThread*) t; |
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_summary->set_rs_thread_vtime(_counter, crt->vtime_accum()); |
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_counter++; |
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} |
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}; |
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void G1RemSetSummary::update() { |
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_num_refined_cards = remset()->conc_refine_cards(); |
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DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); |
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_num_processed_buf_mutator = dcqs.processed_buffers_mut(); |
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_num_processed_buf_rs_threads = dcqs.processed_buffers_rs_thread(); |
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_num_coarsenings = HeapRegionRemSet::n_coarsenings(); |
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ConcurrentG1Refine * cg1r = G1CollectedHeap::heap()->concurrent_g1_refine(); |
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if (_rs_threads_vtimes != NULL) { |
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GetRSThreadVTimeClosure p(this); |
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cg1r->worker_threads_do(&p); |
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} |
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set_sampling_thread_vtime(cg1r->sampling_thread()->vtime_accum()); |
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} |
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void G1RemSetSummary::set_rs_thread_vtime(uint thread, double value) { |
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assert(_rs_threads_vtimes != NULL, "just checking"); |
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assert(thread < _num_vtimes, "just checking"); |
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_rs_threads_vtimes[thread] = value; |
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} |
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double G1RemSetSummary::rs_thread_vtime(uint thread) const { |
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assert(_rs_threads_vtimes != NULL, "just checking"); |
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assert(thread < _num_vtimes, "just checking"); |
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return _rs_threads_vtimes[thread]; |
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} |
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void G1RemSetSummary::initialize(G1RemSet* remset) { |
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assert(_rs_threads_vtimes == NULL, "just checking"); |
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assert(remset != NULL, "just checking"); |
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_remset = remset; |
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_num_vtimes = ConcurrentG1Refine::thread_num(); |
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_rs_threads_vtimes = NEW_C_HEAP_ARRAY(double, _num_vtimes, mtGC); |
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memset(_rs_threads_vtimes, 0, sizeof(double) * _num_vtimes); |
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update(); |
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} |
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void G1RemSetSummary::set(G1RemSetSummary* other) { |
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assert(other != NULL, "just checking"); |
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assert(remset() == other->remset(), "just checking"); |
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assert(_num_vtimes == other->_num_vtimes, "just checking"); |
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_num_refined_cards = other->num_concurrent_refined_cards(); |
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_num_processed_buf_mutator = other->num_processed_buf_mutator(); |
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_num_processed_buf_rs_threads = other->num_processed_buf_rs_threads(); |
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_num_coarsenings = other->_num_coarsenings; |
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memcpy(_rs_threads_vtimes, other->_rs_threads_vtimes, sizeof(double) * _num_vtimes); |
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set_sampling_thread_vtime(other->sampling_thread_vtime()); |
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} |
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void G1RemSetSummary::subtract_from(G1RemSetSummary* other) { |
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assert(other != NULL, "just checking"); |
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assert(remset() == other->remset(), "just checking"); |
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assert(_num_vtimes == other->_num_vtimes, "just checking"); |
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_num_refined_cards = other->num_concurrent_refined_cards() - _num_refined_cards; |
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_num_processed_buf_mutator = other->num_processed_buf_mutator() - _num_processed_buf_mutator; |
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_num_processed_buf_rs_threads = other->num_processed_buf_rs_threads() - _num_processed_buf_rs_threads; |
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_num_coarsenings = other->num_coarsenings() - _num_coarsenings; |
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for (uint i = 0; i < _num_vtimes; i++) { |
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set_rs_thread_vtime(i, other->rs_thread_vtime(i) - rs_thread_vtime(i)); |
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} |
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_sampling_thread_vtime = other->sampling_thread_vtime() - _sampling_thread_vtime; |
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} |
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static double percent_of(size_t numerator, size_t denominator) { |
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if (denominator != 0) { |
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return (double)numerator / denominator * 100.0f; |
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} else { |
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return 0.0f; |
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} |
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} |
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static size_t round_to_K(size_t value) { |
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return value / K; |
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} |
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class RegionTypeCounter VALUE_OBJ_CLASS_SPEC { |
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private: |
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const char* _name; |
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size_t _rs_mem_size; |
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size_t _cards_occupied; |
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size_t _amount; |
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size_t _code_root_mem_size; |
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size_t _code_root_elems; |
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double rs_mem_size_percent_of(size_t total) { |
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return percent_of(_rs_mem_size, total); |
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} |
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double cards_occupied_percent_of(size_t total) { |
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return percent_of(_cards_occupied, total); |
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} |
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double code_root_mem_size_percent_of(size_t total) { |
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return percent_of(_code_root_mem_size, total); |
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} |
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double code_root_elems_percent_of(size_t total) { |
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return percent_of(_code_root_elems, total); |
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} |
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size_t amount() const { return _amount; } |
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public: |
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RegionTypeCounter(const char* name) : _name(name), _rs_mem_size(0), _cards_occupied(0), |
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_amount(0), _code_root_mem_size(0), _code_root_elems(0) { } |
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void add(size_t rs_mem_size, size_t cards_occupied, size_t code_root_mem_size, |
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size_t code_root_elems) { |
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_rs_mem_size += rs_mem_size; |
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_cards_occupied += cards_occupied; |
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_code_root_mem_size += code_root_mem_size; |
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_code_root_elems += code_root_elems; |
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_amount++; |
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} |
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size_t rs_mem_size() const { return _rs_mem_size; } |
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size_t cards_occupied() const { return _cards_occupied; } |
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size_t code_root_mem_size() const { return _code_root_mem_size; } |
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size_t code_root_elems() const { return _code_root_elems; } |
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void print_rs_mem_info_on(outputStream * out, size_t total) { |
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out->print_cr(" %8dK (%5.1f%%) by %zd %s regions", round_to_K(rs_mem_size()), rs_mem_size_percent_of(total), amount(), _name); |
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} |
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void print_cards_occupied_info_on(outputStream * out, size_t total) { |
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out->print_cr(" %8d (%5.1f%%) entries by %zd %s regions", cards_occupied(), cards_occupied_percent_of(total), amount(), _name); |
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} |
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void print_code_root_mem_info_on(outputStream * out, size_t total) { |
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out->print_cr(" %8dK (%5.1f%%) by %zd %s regions", round_to_K(code_root_mem_size()), code_root_mem_size_percent_of(total), amount(), _name); |
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} |
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void print_code_root_elems_info_on(outputStream * out, size_t total) { |
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out->print_cr(" %8d (%5.1f%%) elements by %zd %s regions", code_root_elems(), code_root_elems_percent_of(total), amount(), _name); |
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} |
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}; |
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class HRRSStatsIter: public HeapRegionClosure { |
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private: |
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RegionTypeCounter _young; |
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RegionTypeCounter _humonguous; |
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RegionTypeCounter _free; |
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RegionTypeCounter _old; |
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RegionTypeCounter _all; |
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size_t _max_rs_mem_sz; |
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HeapRegion* _max_rs_mem_sz_region; |
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size_t total_rs_mem_sz() const { return _all.rs_mem_size(); } |
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size_t total_cards_occupied() const { return _all.cards_occupied(); } |
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size_t max_rs_mem_sz() const { return _max_rs_mem_sz; } |
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HeapRegion* max_rs_mem_sz_region() const { return _max_rs_mem_sz_region; } |
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size_t _max_code_root_mem_sz; |
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HeapRegion* _max_code_root_mem_sz_region; |
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size_t total_code_root_mem_sz() const { return _all.code_root_mem_size(); } |
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size_t total_code_root_elems() const { return _all.code_root_elems(); } |
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size_t max_code_root_mem_sz() const { return _max_code_root_mem_sz; } |
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HeapRegion* max_code_root_mem_sz_region() const { return _max_code_root_mem_sz_region; } |
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HRRSStatsIter() : _all("All"), _young("Young"), _humonguous("Humonguous"), |
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_free("Free"), _old("Old"), _max_code_root_mem_sz_region(NULL), _max_rs_mem_sz_region(NULL), |
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_max_rs_mem_sz(0), _max_code_root_mem_sz(0) |
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{} |
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bool doHeapRegion(HeapRegion* r) { |
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HeapRegionRemSet* hrrs = r->rem_set(); |
241 |
||
242 |
// HeapRegionRemSet::mem_size() includes the |
|
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// size of the strong code roots |
|
244 |
size_t rs_mem_sz = hrrs->mem_size(); |
|
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if (rs_mem_sz > _max_rs_mem_sz) { |
|
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_max_rs_mem_sz = rs_mem_sz; |
|
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_max_rs_mem_sz_region = r; |
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} |
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size_t occupied_cards = hrrs->occupied(); |
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size_t code_root_mem_sz = hrrs->strong_code_roots_mem_size(); |
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if (code_root_mem_sz > max_code_root_mem_sz()) { |
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_max_code_root_mem_sz_region = r; |
253 |
} |
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size_t code_root_elems = hrrs->strong_code_roots_list_length(); |
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RegionTypeCounter* current = NULL; |
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if (r->is_young()) { |
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current = &_young; |
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} else if (r->isHumongous()) { |
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current = &_humonguous; |
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} else if (r->is_empty()) { |
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current = &_free; |
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} else { |
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current = &_old; |
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} |
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current->add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems); |
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_all.add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems); |
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268 |
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return false; |
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} |
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271 |
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void print_summary_on(outputStream* out) { |
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RegionTypeCounter* counters[] = { &_young, &_humonguous, &_free, &_old, NULL }; |
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274 |
|
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out->print_cr("\n Current rem set statistics"); |
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out->print_cr(" Total per region rem sets sizes = "SIZE_FORMAT"K." |
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" Max = "SIZE_FORMAT"K.", |
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round_to_K(total_rs_mem_sz()), round_to_K(max_rs_mem_sz())); |
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for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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(*current)->print_rs_mem_info_on(out, total_rs_mem_sz()); |
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281 |
} |
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282 |
|
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out->print_cr(" Static structures = "SIZE_FORMAT"K," |
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284 |
" free_lists = "SIZE_FORMAT"K.", |
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285 |
round_to_K(HeapRegionRemSet::static_mem_size()), |
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round_to_K(HeapRegionRemSet::fl_mem_size())); |
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287 |
|
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out->print_cr(" "SIZE_FORMAT" occupied cards represented.", |
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289 |
total_cards_occupied()); |
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290 |
for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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(*current)->print_cards_occupied_info_on(out, total_cards_occupied()); |
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292 |
} |
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293 |
|
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294 |
// Largest sized rem set region statistics |
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295 |
HeapRegionRemSet* rem_set = max_rs_mem_sz_region()->rem_set(); |
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296 |
out->print_cr(" Region with largest rem set = "HR_FORMAT", " |
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297 |
"size = "SIZE_FORMAT "K, occupied = "SIZE_FORMAT"K.", |
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298 |
HR_FORMAT_PARAMS(max_rs_mem_sz_region()), |
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299 |
round_to_K(rem_set->mem_size()), |
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300 |
round_to_K(rem_set->occupied())); |
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301 |
|
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302 |
// Strong code root statistics |
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303 |
HeapRegionRemSet* max_code_root_rem_set = max_code_root_mem_sz_region()->rem_set(); |
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304 |
out->print_cr(" Total heap region code root sets sizes = "SIZE_FORMAT"K." |
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|
305 |
" Max = "SIZE_FORMAT"K.", |
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306 |
round_to_K(total_code_root_mem_sz()), |
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307 |
round_to_K(max_code_root_rem_set->strong_code_roots_mem_size())); |
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308 |
for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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|
309 |
(*current)->print_code_root_mem_info_on(out, total_code_root_mem_sz()); |
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|
310 |
} |
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|
311 |
|
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|
312 |
out->print_cr(" "SIZE_FORMAT" code roots represented.", |
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313 |
total_code_root_elems()); |
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|
314 |
for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
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|
315 |
(*current)->print_code_root_elems_info_on(out, total_code_root_elems()); |
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|
316 |
} |
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|
317 |
|
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|
318 |
out->print_cr(" Region with largest amount of code roots = "HR_FORMAT", " |
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|
319 |
"size = "SIZE_FORMAT "K, num_elems = "SIZE_FORMAT".", |
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|
320 |
HR_FORMAT_PARAMS(max_code_root_mem_sz_region()), |
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|
321 |
round_to_K(max_code_root_rem_set->strong_code_roots_mem_size()), |
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322 |
round_to_K(max_code_root_rem_set->strong_code_roots_list_length())); |
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|
323 |
} |
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|
324 |
}; |
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|
325 |
|
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326 |
void G1RemSetSummary::print_on(outputStream* out) { |
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327 |
out->print_cr("\n Recent concurrent refinement statistics"); |
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328 |
out->print_cr(" Processed "SIZE_FORMAT" cards", |
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329 |
num_concurrent_refined_cards()); |
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330 |
out->print_cr(" Of %d completed buffers:", num_processed_buf_total()); |
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331 |
out->print_cr(" %8d (%5.1f%%) by concurrent RS threads.", |
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332 |
num_processed_buf_total(), |
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333 |
percent_of(num_processed_buf_rs_threads(), num_processed_buf_total())); |
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334 |
out->print_cr(" %8d (%5.1f%%) by mutator threads.", |
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335 |
num_processed_buf_mutator(), |
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336 |
percent_of(num_processed_buf_mutator(), num_processed_buf_total())); |
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337 |
out->print_cr(" Did %d coarsenings.", num_coarsenings()); |
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338 |
out->print_cr(" Concurrent RS threads times (s)"); |
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339 |
out->print(" "); |
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340 |
for (uint i = 0; i < _num_vtimes; i++) { |
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341 |
out->print(" %5.2f", rs_thread_vtime(i)); |
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342 |
} |
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|
343 |
out->cr(); |
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344 |
out->print_cr(" Concurrent sampling threads times (s)"); |
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345 |
out->print_cr(" %5.2f", sampling_thread_vtime()); |
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346 |
|
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347 |
HRRSStatsIter blk; |
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348 |
G1CollectedHeap::heap()->heap_region_iterate(&blk); |
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349 |
blk.print_summary_on(out); |
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350 |
} |