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/*
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* Copyright (c) 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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#ifndef SHARE_VM_GC_SHARED_WEAKPROCESSOR_INLINE_HPP
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#define SHARE_VM_GC_SHARED_WEAKPROCESSOR_INLINE_HPP
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#include "gc/shared/oopStorage.inline.hpp"
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#include "gc/shared/oopStorageParState.inline.hpp"
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#include "gc/shared/weakProcessor.hpp"
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#include "gc/shared/weakProcessorPhases.hpp"
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#include "gc/shared/weakProcessorPhaseTimes.hpp"
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#include "gc/shared/workgroup.hpp"
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#include "utilities/debug.hpp"
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class BoolObjectClosure;
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class OopClosure;
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template<typename IsAlive, typename KeepAlive>
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void WeakProcessor::Task::work(uint worker_id,
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IsAlive* is_alive,
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KeepAlive* keep_alive) {
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assert(worker_id < _nworkers,
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"worker_id (%u) exceeds task's configured workers (%u)",
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worker_id, _nworkers);
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FOR_EACH_WEAK_PROCESSOR_PHASE(phase) {
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if (WeakProcessorPhases::is_serial(phase)) {
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uint serial_index = WeakProcessorPhases::serial_index(phase);
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if (_serial_phases_done.try_claim_task(serial_index)) {
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WeakProcessorPhaseTimeTracker pt(_phase_times, phase);
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WeakProcessorPhases::processor(phase)(is_alive, keep_alive);
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}
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} else {
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WeakProcessorPhaseTimeTracker pt(_phase_times, phase, worker_id);
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uint storage_index = WeakProcessorPhases::oop_storage_index(phase);
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_storage_states[storage_index].weak_oops_do(is_alive, keep_alive);
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}
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}
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_serial_phases_done.all_tasks_completed(_nworkers);
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}
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class WeakProcessor::GangTask : public AbstractGangTask {
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Task _task;
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BoolObjectClosure* _is_alive;
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OopClosure* _keep_alive;
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void (*_erased_do_work)(GangTask* task, uint worker_id);
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template<typename IsAlive, typename KeepAlive>
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static void erased_do_work(GangTask* task, uint worker_id) {
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task->_task.work(worker_id,
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static_cast<IsAlive*>(task->_is_alive),
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static_cast<KeepAlive*>(task->_keep_alive));
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}
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public:
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template<typename IsAlive, typename KeepAlive>
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GangTask(const char* name,
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IsAlive* is_alive,
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KeepAlive* keep_alive,
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WeakProcessorPhaseTimes* phase_times,
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uint nworkers) :
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AbstractGangTask(name),
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_task(phase_times, nworkers),
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_is_alive(is_alive),
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_keep_alive(keep_alive),
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_erased_do_work(&erased_do_work<IsAlive, KeepAlive>)
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{}
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virtual void work(uint worker_id);
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};
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template<typename IsAlive, typename KeepAlive>
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void WeakProcessor::weak_oops_do(WorkGang* workers,
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IsAlive* is_alive,
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KeepAlive* keep_alive,
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WeakProcessorPhaseTimes* phase_times) {
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WeakProcessorTimeTracker tt(phase_times);
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uint nworkers = ergo_workers(MIN2(workers->active_workers(),
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phase_times->max_threads()));
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GangTask task("Weak Processor", is_alive, keep_alive, phase_times, nworkers);
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workers->run_task(&task, nworkers);
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}
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template<typename IsAlive, typename KeepAlive>
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void WeakProcessor::weak_oops_do(WorkGang* workers,
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IsAlive* is_alive,
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KeepAlive* keep_alive,
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uint indent_log) {
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uint nworkers = ergo_workers(workers->active_workers());
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WeakProcessorPhaseTimes pt(nworkers);
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weak_oops_do(workers, is_alive, keep_alive, &pt);
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pt.log_print_phases(indent_log);
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}
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#endif // SHARE_VM_GC_SHARED_WEAKPROCESSOR_INLINE_HPP
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