114 lines
3.7 KiB
C++
114 lines
3.7 KiB
C++
/*
|
|
* Copyright (c) 2013, 2020, Red Hat, Inc. 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef SHARE_GC_SHENANDOAH_SHENANDOAHCONCURRENTMARK_HPP
|
|
#define SHARE_GC_SHENANDOAH_SHENANDOAHCONCURRENTMARK_HPP
|
|
|
|
#include "gc/shared/taskqueue.hpp"
|
|
#include "gc/shared/taskTerminator.hpp"
|
|
#include "gc/shenandoah/shenandoahOopClosures.hpp"
|
|
#include "gc/shenandoah/shenandoahPhaseTimings.hpp"
|
|
#include "gc/shenandoah/shenandoahTaskqueue.hpp"
|
|
|
|
class ShenandoahStrDedupQueue;
|
|
|
|
class ShenandoahConcurrentMark: public CHeapObj<mtGC> {
|
|
private:
|
|
ShenandoahHeap* _heap;
|
|
ShenandoahObjToScanQueueSet* _task_queues;
|
|
|
|
public:
|
|
void initialize(uint workers);
|
|
void cancel();
|
|
|
|
// ---------- Marking loop and tasks
|
|
//
|
|
private:
|
|
template <class T>
|
|
inline void do_task(ShenandoahObjToScanQueue* q, T* cl, jushort* live_data, ShenandoahMarkTask* task);
|
|
|
|
template <class T>
|
|
inline void do_chunked_array_start(ShenandoahObjToScanQueue* q, T* cl, oop array);
|
|
|
|
template <class T>
|
|
inline void do_chunked_array(ShenandoahObjToScanQueue* q, T* cl, oop array, int chunk, int pow);
|
|
|
|
inline void count_liveness(jushort* live_data, oop obj);
|
|
|
|
template <class T, bool CANCELLABLE>
|
|
void mark_loop_work(T* cl, jushort* live_data, uint worker_id, TaskTerminator *t);
|
|
|
|
template <bool CANCELLABLE>
|
|
void mark_loop_prework(uint worker_id, TaskTerminator *terminator, ReferenceProcessor *rp, bool strdedup);
|
|
|
|
public:
|
|
void mark_loop(uint worker_id, TaskTerminator* terminator, ReferenceProcessor *rp,
|
|
bool cancellable, bool strdedup) {
|
|
if (cancellable) {
|
|
mark_loop_prework<true>(worker_id, terminator, rp, strdedup);
|
|
} else {
|
|
mark_loop_prework<false>(worker_id, terminator, rp, strdedup);
|
|
}
|
|
}
|
|
|
|
template<class T, UpdateRefsMode UPDATE_REFS, StringDedupMode STRING_DEDUP>
|
|
static inline void mark_through_ref(T* p, ShenandoahHeap* heap, ShenandoahObjToScanQueue* q, ShenandoahMarkingContext* const mark_context);
|
|
|
|
void mark_from_roots();
|
|
void finish_mark_from_roots(bool full_gc);
|
|
|
|
void mark_roots(ShenandoahPhaseTimings::Phase root_phase);
|
|
void update_roots(ShenandoahPhaseTimings::Phase root_phase);
|
|
void update_thread_roots(ShenandoahPhaseTimings::Phase root_phase);
|
|
|
|
// ---------- Weak references
|
|
//
|
|
private:
|
|
void weak_refs_work(bool full_gc);
|
|
void weak_refs_work_doit(bool full_gc);
|
|
|
|
public:
|
|
void preclean_weak_refs();
|
|
|
|
// ---------- Concurrent code cache
|
|
//
|
|
private:
|
|
ShenandoahSharedFlag _claimed_codecache;
|
|
|
|
public:
|
|
void concurrent_scan_code_roots(uint worker_id, ReferenceProcessor* rp);
|
|
bool claim_codecache();
|
|
void clear_claim_codecache();
|
|
|
|
// ---------- Helpers
|
|
// Used from closures, need to be public
|
|
//
|
|
public:
|
|
ShenandoahObjToScanQueue* get_queue(uint worker_id);
|
|
ShenandoahObjToScanQueueSet* task_queues() { return _task_queues; }
|
|
|
|
};
|
|
|
|
#endif // SHARE_GC_SHENANDOAH_SHENANDOAHCONCURRENTMARK_HPP
|