122 lines
5.2 KiB
C++
122 lines
5.2 KiB
C++
/*
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* Copyright (c) 2016, 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/g1/g1CollectedHeap.hpp"
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#include "gc/g1/g1HeapTransition.hpp"
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#include "gc/g1/g1Policy.hpp"
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#include "logging/log.hpp"
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#include "memory/metaspace.hpp"
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G1HeapTransition::Data::Data(G1CollectedHeap* g1_heap) {
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_eden_length = g1_heap->eden_regions_count();
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_survivor_length = g1_heap->survivor_regions_count();
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_old_length = g1_heap->old_regions_count();
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_humongous_length = g1_heap->humongous_regions_count();
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_metaspace_used_bytes = MetaspaceUtils::used_bytes();
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}
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G1HeapTransition::G1HeapTransition(G1CollectedHeap* g1_heap) : _g1_heap(g1_heap), _before(g1_heap) { }
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struct DetailedUsage : public StackObj {
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size_t _eden_used;
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size_t _survivor_used;
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size_t _old_used;
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size_t _humongous_used;
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size_t _eden_region_count;
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size_t _survivor_region_count;
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size_t _old_region_count;
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size_t _humongous_region_count;
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DetailedUsage() :
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_eden_used(0), _survivor_used(0), _old_used(0), _humongous_used(0),
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_eden_region_count(0), _survivor_region_count(0), _old_region_count(0), _humongous_region_count(0) {}
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};
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class DetailedUsageClosure: public HeapRegionClosure {
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public:
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DetailedUsage _usage;
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bool do_heap_region(HeapRegion* r) {
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if (r->is_old()) {
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_usage._old_used += r->used();
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_usage._old_region_count++;
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} else if (r->is_survivor()) {
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_usage._survivor_used += r->used();
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_usage._survivor_region_count++;
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} else if (r->is_eden()) {
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_usage._eden_used += r->used();
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_usage._eden_region_count++;
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} else if (r->is_humongous()) {
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_usage._humongous_used += r->used();
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_usage._humongous_region_count++;
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} else {
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assert(r->used() == 0, "Expected used to be 0 but it was " SIZE_FORMAT, r->used());
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}
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return false;
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}
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};
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void G1HeapTransition::print() {
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Data after(_g1_heap);
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size_t eden_capacity_length_after_gc = _g1_heap->g1_policy()->young_list_target_length() - after._survivor_length;
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size_t survivor_capacity_length_after_gc = _g1_heap->g1_policy()->max_survivor_regions();
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DetailedUsage usage;
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if (log_is_enabled(Trace, gc, heap)) {
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DetailedUsageClosure blk;
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_g1_heap->heap_region_iterate(&blk);
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usage = blk._usage;
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assert(usage._eden_region_count == 0, "Expected no eden regions, but got " SIZE_FORMAT, usage._eden_region_count);
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assert(usage._survivor_region_count == after._survivor_length, "Expected survivors to be " SIZE_FORMAT " but was " SIZE_FORMAT,
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after._survivor_length, usage._survivor_region_count);
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assert(usage._old_region_count == after._old_length, "Expected old to be " SIZE_FORMAT " but was " SIZE_FORMAT,
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after._old_length, usage._old_region_count);
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assert(usage._humongous_region_count == after._humongous_length, "Expected humongous to be " SIZE_FORMAT " but was " SIZE_FORMAT,
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after._humongous_length, usage._humongous_region_count);
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}
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log_info(gc, heap)("Eden regions: " SIZE_FORMAT "->" SIZE_FORMAT "(" SIZE_FORMAT ")",
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_before._eden_length, after._eden_length, eden_capacity_length_after_gc);
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log_trace(gc, heap)(" Used: 0K, Waste: 0K");
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log_info(gc, heap)("Survivor regions: " SIZE_FORMAT "->" SIZE_FORMAT "(" SIZE_FORMAT ")",
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_before._survivor_length, after._survivor_length, survivor_capacity_length_after_gc);
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log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
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usage._survivor_used / K, ((after._survivor_length * HeapRegion::GrainBytes) - usage._survivor_used) / K);
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log_info(gc, heap)("Old regions: " SIZE_FORMAT "->" SIZE_FORMAT,
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_before._old_length, after._old_length);
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log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
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usage._old_used / K, ((after._old_length * HeapRegion::GrainBytes) - usage._old_used) / K);
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log_info(gc, heap)("Humongous regions: " SIZE_FORMAT "->" SIZE_FORMAT,
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_before._humongous_length, after._humongous_length);
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log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K",
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usage._humongous_used / K, ((after._humongous_length * HeapRegion::GrainBytes) - usage._humongous_used) / K);
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MetaspaceUtils::print_metaspace_change(_before._metaspace_used_bytes);
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}
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