/*
* Copyright ( c ) 2021 , 2022 , 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_SHENANDOAHMARK_HPP
#define SHARE_GC_SHENANDOAH_SHENANDOAHMARK_HPP
#include "gc/shared/stringdedup/stringDedup.hpp"
#include "gc/shared/taskTerminator.hpp"
#include "gc/shenandoah/shenandoahOopClosures.hpp"
#include "gc/shenandoah/shenandoahTaskqueue.hpp"
class ShenandoahCMDrainMarkingStackClosure;
// Base class for mark
// Mark class does not maintain states. Instead, mark states are
// maintained by task queues, mark bitmap and SATB buffers (concurrent mark)
class ShenandoahMark: public StackObj {
friend class ShenandoahCMDrainMarkingStackClosure;
protected :
ShenandoahObjToScanQueueSet* const _task_queues;
protected :
ShenandoahMark();
public :
template <class T>
static inline void mark_through_ref(T* p, ShenandoahObjToScanQueue* q, ShenandoahMarkingContext* const mark_context, bool weak);
static void clear();
// Loom support
void start_mark();
void end_mark();
// Helpers
inline ShenandoahObjToScanQueueSet* task_queues() const ;
inline ShenandoahObjToScanQueue* get_queue(uint index) const ;
// ---------- Marking loop and tasks
private :
template <class T, StringDedupMode STRING_DEDUP>
inline void do_task(ShenandoahObjToScanQueue* q, T* cl, ShenandoahLiveData* live_data, StringDedup::Requests* const req, ShenandoahMarkTask* task);
template <class T>
inline void do_chunked_array_start(ShenandoahObjToScanQueue* q, T* cl, oop array, bool weak);
template <class T>
inline void do_chunked_array(ShenandoahObjToScanQueue* q, T* cl, oop array, int chunk, int pow, bool weak);
inline void count_liveness(ShenandoahLiveData* live_data, oop obj);
template <class T, bool CANCELLABLE,StringDedupMode STRING_DEDUP>
void mark_loop_work(T* cl, ShenandoahLiveData* live_data, uint worker_id, TaskTerminator *t, StringDedup::Requests* const req);
template <bool CANCELLABLE, StringDedupMode STRING_DEDUP>
void mark_loop_prework(uint worker_id, TaskTerminator *terminator, ShenandoahReferenceProcessor *rp, StringDedup::Requests* const req);
template <StringDedupMode STRING_DEDUP>
inline void dedup_string(oop obj, StringDedup::Requests* const req);
protected :
void mark_loop(uint worker_id, TaskTerminator* terminator, ShenandoahReferenceProcessor *rp,
bool cancellable, StringDedupMode dedup_mode, StringDedup::Requests* const req);
};
#endif // SHARE_GC_SHENANDOAH_SHENANDOAHMARK_HPP
Messung V0.5 in Prozent C=97 H=100 G=98
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-09-11)
¤
*© Formatika GbR, Deutschland