98 lines
4.2 KiB
C++
98 lines
4.2 KiB
C++
/*
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* Copyright (c) 2017, 2018, 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/g1FullCollector.hpp"
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#include "gc/g1/g1FullGCMarker.hpp"
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#include "gc/g1/g1FullGCOopClosures.inline.hpp"
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#include "gc/g1/g1FullGCReferenceProcessorExecutor.hpp"
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#include "gc/shared/gcTraceTime.inline.hpp"
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#include "gc/shared/referenceProcessor.hpp"
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G1FullGCReferenceProcessingExecutor::G1FullGCReferenceProcessingExecutor(G1FullCollector* collector) :
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_collector(collector),
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_reference_processor(collector->reference_processor()),
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_old_mt_degree(_reference_processor->num_queues()) {
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if (_reference_processor->processing_is_mt()) {
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_reference_processor->set_active_mt_degree(_collector->workers());
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}
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}
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G1FullGCReferenceProcessingExecutor::~G1FullGCReferenceProcessingExecutor() {
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if (_reference_processor->processing_is_mt()) {
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_reference_processor->set_active_mt_degree(_old_mt_degree);
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}
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}
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G1FullGCReferenceProcessingExecutor::G1RefProcTaskProxy::G1RefProcTaskProxy(ProcessTask& proc_task,
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G1FullCollector* collector) :
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AbstractGangTask("G1 reference processing task"),
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_proc_task(proc_task),
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_collector(collector),
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_terminator(_collector->workers(), _collector->oop_queue_set()) { }
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void G1FullGCReferenceProcessingExecutor::G1RefProcTaskProxy::work(uint worker_id) {
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G1FullGCMarker* marker = _collector->marker(worker_id);
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G1IsAliveClosure is_alive(_collector->mark_bitmap());
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G1FullKeepAliveClosure keep_alive(marker);
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_proc_task.work(worker_id,
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is_alive,
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keep_alive,
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*marker->stack_closure());
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}
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void G1FullGCReferenceProcessingExecutor::run_task(AbstractGangTask* task) {
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G1CollectedHeap::heap()->workers()->run_task(task, _collector->workers());
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}
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void G1FullGCReferenceProcessingExecutor::execute(ProcessTask& proc_task) {
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G1RefProcTaskProxy proc_task_proxy(proc_task, _collector);
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run_task(&proc_task_proxy);
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}
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void G1FullGCReferenceProcessingExecutor::execute(STWGCTimer* timer, G1FullGCTracer* tracer) {
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GCTraceTime(Debug, gc, phases) debug("Phase 1: Reference Processing", timer);
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// Process reference objects found during marking.
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G1FullGCMarker* marker = _collector->marker(0);
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G1IsAliveClosure is_alive(_collector->mark_bitmap());
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G1FullKeepAliveClosure keep_alive(marker);
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ReferenceProcessorPhaseTimes pt(timer, _reference_processor->max_num_queues());
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AbstractRefProcTaskExecutor* executor = _reference_processor->processing_is_mt() ? this : NULL;
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// Process discovered references, use this executor if multi-threaded
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// processing is enabled.
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const ReferenceProcessorStats& stats =
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_reference_processor->process_discovered_references(&is_alive,
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&keep_alive,
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marker->stack_closure(),
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executor,
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&pt);
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tracer->report_gc_reference_stats(stats);
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pt.print_all_references();
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assert(marker->oop_stack()->is_empty(), "Should be no oops on the stack");
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}
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