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/*
* Copyright (c) 2001, 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.
*
* 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_G1_G1VMOPERATIONS_HPP
#define SHARE_GC_G1_G1VMOPERATIONS_HPP
#include "gc/shared/gcId.hpp"
#include "gc/shared/gcVMOperations.hpp"
// VM_operations for the G1 collector.
class VM_G1CollectFull : public VM_GC_Operation {
bool _gc_succeeded;
protected:
bool skip_operation() const override;
public:
VM_G1CollectFull(uint gc_count_before,
uint full_gc_count_before,
GCCause::Cause cause) :
VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true),
_gc_succeeded(false) { }
VMOp_Type type() const override { return VMOp_G1CollectFull; }
void doit() override;
bool gc_succeeded() const { return _gc_succeeded; }
};
class VM_G1TryInitiateConcMark : public VM_GC_Operation {
bool _transient_failure;
bool _cycle_already_in_progress;
bool _whitebox_attached;
bool _terminating;
bool _gc_succeeded;
public:
VM_G1TryInitiateConcMark(uint gc_count_before,
GCCause::Cause gc_cause);
virtual VMOp_Type type() const { return VMOp_G1TryInitiateConcMark; }
virtual bool doit_prologue();
virtual void doit();
bool transient_failure() const { return _transient_failure; }
bool cycle_already_in_progress() const { return _cycle_already_in_progress; }
bool whitebox_attached() const { return _whitebox_attached; }
bool terminating() const { return _terminating; }
bool gc_succeeded() const { return _gc_succeeded; }
};
class VM_G1CollectForAllocation : public VM_CollectForAllocation {
bool _gc_succeeded;
public:
VM_G1CollectForAllocation(size_t word_size,
uint gc_count_before,
GCCause::Cause gc_cause);
virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
virtual void doit();
bool gc_succeeded() const { return _gc_succeeded; }
private:
bool should_try_allocation_before_gc();
};
// Concurrent G1 stop-the-world operations such as remark and cleanup.
class VM_G1PauseConcurrent : public VM_Operation {
uint _gc_id;
const char* _message;
protected:
VM_G1PauseConcurrent(const char* message) :
_gc_id(GCId::current()), _message(message) { }
virtual void work() = 0;
public:
bool doit_prologue() override;
void doit_epilogue() override;
void doit() override;
};
class VM_G1PauseRemark : public VM_G1PauseConcurrent {
public:
VM_G1PauseRemark() : VM_G1PauseConcurrent("Pause Remark") { }
VMOp_Type type() const override { return VMOp_G1PauseRemark; }
void work() override;
};
class VM_G1PauseCleanup : public VM_G1PauseConcurrent {
public:
VM_G1PauseCleanup() : VM_G1PauseConcurrent("Pause Cleanup") { }
VMOp_Type type() const override { return VMOp_G1PauseCleanup; }
void work() override;
};
#endif // SHARE_GC_G1_G1VMOPERATIONS_HPP
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