| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "gc/g1/g1CollectedHeap.hpp" |
| #include "gc/g1/g1CollectorPolicy.hpp" |
| #include "gc/g1/g1HeapTransition.hpp" |
| #include "logging/log.hpp" |
| #include "memory/metaspace.hpp" |
| |
| G1HeapTransition::Data::Data(G1CollectedHeap* g1_heap) { |
| YoungList* young_list = g1_heap->young_list(); |
| _eden_length = young_list->eden_length(); |
| _survivor_length = young_list->survivor_length(); |
| _old_length = g1_heap->old_regions_count(); |
| _humongous_length = g1_heap->humongous_regions_count(); |
| _metaspace_used_bytes = MetaspaceAux::used_bytes(); |
| } |
| |
| G1HeapTransition::G1HeapTransition(G1CollectedHeap* g1_heap) : _g1_heap(g1_heap), _before(g1_heap) { } |
| |
| struct DetailedUsage : public StackObj { |
| size_t _eden_used; |
| size_t _survivor_used; |
| size_t _old_used; |
| size_t _humongous_used; |
| |
| size_t _eden_region_count; |
| size_t _survivor_region_count; |
| size_t _old_region_count; |
| size_t _humongous_region_count; |
| |
| DetailedUsage() : |
| _eden_used(0), _survivor_used(0), _old_used(0), _humongous_used(0), |
| _eden_region_count(0), _survivor_region_count(0), _old_region_count(0), _humongous_region_count(0) {} |
| }; |
| |
| class DetailedUsageClosure: public HeapRegionClosure { |
| public: |
| DetailedUsage _usage; |
| bool doHeapRegion(HeapRegion* r) { |
| if (r->is_old()) { |
| _usage._old_used += r->used(); |
| _usage._old_region_count++; |
| } else if (r->is_survivor()) { |
| _usage._survivor_used += r->used(); |
| _usage._survivor_region_count++; |
| } else if (r->is_eden()) { |
| _usage._eden_used += r->used(); |
| _usage._eden_region_count++; |
| } else if (r->is_humongous()) { |
| _usage._humongous_used += r->used(); |
| _usage._humongous_region_count++; |
| } else { |
| assert(r->used() == 0, "Expected used to be 0 but it was " SIZE_FORMAT, r->used()); |
| } |
| return false; |
| } |
| }; |
| |
| void G1HeapTransition::print() { |
| Data after(_g1_heap); |
| |
| size_t eden_capacity_length_after_gc = _g1_heap->g1_policy()->young_list_target_length() - after._survivor_length; |
| size_t survivor_capacity_length_after_gc = _g1_heap->g1_policy()->max_survivor_regions(); |
| |
| DetailedUsage usage; |
| if (log_is_enabled(Trace, gc, heap)) { |
| DetailedUsageClosure blk; |
| _g1_heap->heap_region_iterate(&blk); |
| usage = blk._usage; |
| assert(usage._eden_region_count == 0, "Expected no eden regions, but got " SIZE_FORMAT, usage._eden_region_count); |
| assert(usage._survivor_region_count == after._survivor_length, "Expected survivors to be " SIZE_FORMAT " but was " SIZE_FORMAT, |
| after._survivor_length, usage._survivor_region_count); |
| assert(usage._old_region_count == after._old_length, "Expected old to be " SIZE_FORMAT " but was " SIZE_FORMAT, |
| after._old_length, usage._old_region_count); |
| assert(usage._humongous_region_count == after._humongous_length, "Expected humongous to be " SIZE_FORMAT " but was " SIZE_FORMAT, |
| after._humongous_length, usage._humongous_region_count); |
| } |
| |
| log_info(gc, heap)("Eden regions: " SIZE_FORMAT "->" SIZE_FORMAT "(" SIZE_FORMAT ")", |
| _before._eden_length, after._eden_length, eden_capacity_length_after_gc); |
| log_trace(gc, heap)(" Used: 0K, Waste: 0K"); |
| |
| log_info(gc, heap)("Survivor regions: " SIZE_FORMAT "->" SIZE_FORMAT "(" SIZE_FORMAT ")", |
| _before._survivor_length, after._survivor_length, survivor_capacity_length_after_gc); |
| log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K", |
| usage._survivor_used / K, ((after._survivor_length * HeapRegion::GrainBytes) - usage._survivor_used) / K); |
| |
| log_info(gc, heap)("Old regions: " SIZE_FORMAT "->" SIZE_FORMAT, |
| _before._old_length, after._old_length); |
| log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K", |
| usage._old_used / K, ((after._old_length * HeapRegion::GrainBytes) - usage._old_used) / K); |
| |
| log_info(gc, heap)("Humongous regions: " SIZE_FORMAT "->" SIZE_FORMAT, |
| _before._humongous_length, after._humongous_length); |
| log_trace(gc, heap)(" Used: " SIZE_FORMAT "K, Waste: " SIZE_FORMAT "K", |
| usage._humongous_used / K, ((after._humongous_length * HeapRegion::GrainBytes) - usage._humongous_used) / K); |
| |
| MetaspaceAux::print_metaspace_change(_before._metaspace_used_bytes); |
| } |