/*
* Copyright ( c ) 2015 , 2021 , Oracle and / or its affiliates . 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 .
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*/
#ifndef SHARE_GC_Z_ZDRIVER_HPP
#define SHARE_GC_Z_ZDRIVER_HPP
#include "gc/shared/concurrentGCThread.hpp"
#include "gc/shared/gcCause.hpp"
#include "gc/z/zMessagePort.hpp"
class VM_ZOperation;
class ZDriverRequest {
private :
GCCause::Cause _cause;
uint _nworkers;
public :
ZDriverRequest();
ZDriverRequest(GCCause::Cause cause);
ZDriverRequest(GCCause::Cause cause, uint nworkers);
bool operator ==(const ZDriverRequest& other) const ;
GCCause::Cause cause() const ;
uint nworkers() const ;
};
class ZDriver : public ConcurrentGCThread {
private :
ZMessagePort<ZDriverRequest> _gc_cycle_port;
ZRendezvousPort _gc_locker_port;
template <typename T> bool pause();
void pause_mark_start();
void concurrent_mark();
bool pause_mark_end();
void concurrent_mark_continue();
void concurrent_mark_free();
void concurrent_process_non_strong_references();
void concurrent_reset_relocation_set();
void pause_verify();
void concurrent_select_relocation_set();
void pause_relocate_start();
void concurrent_relocate();
void check_out_of_memory();
void gc(const ZDriverRequest& request);
protected :
virtual void run_service();
virtual void stop_service();
public :
ZDriver();
bool is_busy() const ;
void collect(const ZDriverRequest& request);
};
#endif // SHARE_GC_Z_ZDRIVER_HPP
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