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ConcurrentGCSATB.hpp
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ConcurrentGCSATB.hpp
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/*******************************************************************************
* Copyright (c) 2018, 2018 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
#if !defined(CONCURRENTGCSATB_HPP_)
#define CONCURRENTGCSATB_HPP_
#include "omrcfg.h"
#include "modronopt.h"
#include "omr.h"
#include "OMR_VM.hpp"
#if defined(OMR_GC_MODRON_CONCURRENT_MARK)
#include "ConcurrentGC.hpp"
/**
* @todo Provide class documentation
* @ingroup GC_Modron_Standard
*/
class MM_ConcurrentGCSATB : public MM_ConcurrentGC
{
/*
* Data members
*/
private:
uintptr_t _bytesToTrace;
uintptr_t _traceTarget;
/*
* Function members
*/
protected:
void tearDown(MM_EnvironmentBase *env);
virtual uintptr_t doConcurrentTrace(MM_EnvironmentBase *env, MM_AllocateDescription *allocDescription, uintptr_t sizeToTrace, MM_MemorySubSpace *subspace, bool tlhAllocation);
virtual uintptr_t localMark(MM_EnvironmentBase *env, uintptr_t sizeToTrace);
virtual void reportConcurrentCollectionStart(MM_EnvironmentBase *env);
virtual void reportConcurrentHalted(MM_EnvironmentBase *env);
virtual void setupForConcurrent(MM_EnvironmentBase *env);
virtual void finalConcurrentPrecollect(MM_EnvironmentBase *env) {};
virtual void tuneToHeap(MM_EnvironmentBase *env);
virtual void completeConcurrentTracing(MM_EnvironmentBase *env, uintptr_t executionModeAtGC);
virtual void adjustTraceTarget();
virtual uintptr_t getTraceTarget() { return _traceTarget; };
#if defined(OMR_GC_MODRON_SCAVENGER)
/**
* Process event from an external GC (Scavenger) when old-to-old reference is created.
* @param objectPtr Parent old object that has a reference to a child old object
*/
virtual void oldToOldReferenceCreated(MM_EnvironmentBase *env, omrobjectptr_t objectPtr) {};
#endif /* OMR_GC_MODRON_SCAVENGER */
public:
virtual uintptr_t getVMStateID() { return OMRVMSTATE_GC_COLLECTOR_CONCURRENTGC; };
static MM_ConcurrentGCSATB *newInstance(MM_EnvironmentBase *env);
virtual void kill(MM_EnvironmentBase *env);
MM_ConcurrentGCSATB(MM_EnvironmentBase *env)
: MM_ConcurrentGC(env)
,_bytesToTrace(0)
,_traceTarget(0)
{
_typeId = __FUNCTION__;
}
};
#endif /* OMR_GC_MODRON_CONCURRENT_MARK */
#endif /* CONCURRENTGCSATB_HPP_ */