/*
* Copyright ( c ) 2015 , 2021 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
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* 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 .
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* 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 ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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#ifndef SHARE_GC_Z_ZMARK_HPP
#define SHARE_GC_Z_ZMARK_HPP
#include "gc/z/zMarkStack.hpp"
#include "gc/z/zMarkStackAllocator.hpp"
#include "gc/z/zMarkStackEntry.hpp"
#include "gc/z/zMarkTerminate.hpp"
#include "oops/oopsHierarchy.hpp"
#include "utilities/globalDefinitions.hpp"
class Thread;
class ZMarkContext;
class ZPageTable;
class ZWorkers;
class ZMark {
friend class ZMarkTask;
private :
ZWorkers* const _workers;
ZPageTable* const _page_table;
ZMarkStackAllocator _allocator;
ZMarkStripeSet _stripes;
ZMarkTerminate _terminate;
volatile bool _work_terminateflush;
volatile size_t _work_nproactiveflush;
volatile size_t _work_nterminateflush;
size_t _nproactiveflush;
size_t _nterminateflush;
size_t _ntrycomplete;
size_t _ncontinue;
uint _nworkers;
size_t calculate_nstripes(uint nworkers) const ;
bool is_array(uintptr_t addr) const ;
void push_partial_array(uintptr_t addr, size_t size, bool finalizable);
void follow_small_array(uintptr_t addr, size_t size, bool finalizable);
void follow_large_array(uintptr_t addr, size_t size, bool finalizable);
void follow_array(uintptr_t addr, size_t size, bool finalizable);
void follow_partial_array(ZMarkStackEntry entry, bool finalizable);
void follow_array_object(objArrayOop obj, bool finalizable);
void follow_object(oop obj, bool finalizable);
void mark_and_follow(ZMarkContext* context, ZMarkStackEntry entry);
template <typename T> bool drain(ZMarkContext* context, T* timeout);
bool try_steal_local(ZMarkContext* context);
bool try_steal_global(ZMarkContext* context);
bool try_steal(ZMarkContext* context);
void idle() const ;
bool flush(bool at_safepoint);
bool try_proactive_flush();
bool try_flush(volatile size_t* nflush);
bool try_terminate();
bool try_complete();
bool try_end();
void prepare_work();
void finish_work();
void work_without_timeout(ZMarkContext* context);
void work_with_timeout(ZMarkContext* context, uint64_t timeout_in_micros);
void work(uint64_t timeout_in_micros);
void verify_all_stacks_empty() const ;
public :
ZMark(ZWorkers* workers, ZPageTable* page_table);
bool is_initialized() const ;
template <bool gc_thread, bool follow, bool finalizable, bool publish> void mark_object(uintptr_t addr);
void start();
void mark(bool initial);
bool end();
void free();
void flush_and_free();
bool flush_and_free(Thread* thread);
};
#endif // SHARE_GC_Z_ZMARK_HPP
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(vorverarbeitet am 2026-09-11)
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