author | pliden |
Thu, 17 Mar 2016 08:07:53 +0100 | |
changeset 37129 | af29e306e50b |
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child 40892 | 330a02d935ad |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#ifndef SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP |
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#define SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP |
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#include "gc/g1/g1AllocationContext.hpp" |
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#include "gc/shared/gcId.hpp" |
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#include "gc/shared/referencePendingListLocker.hpp" |
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#include "gc/shared/vmGCOperations.hpp" |
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// VM_operations for the G1 collector. |
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// VM_GC_Operation: |
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// - VM_CGC_Operation |
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// - VM_G1CollectFull |
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// - VM_G1OperationWithAllocRequest |
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// - VM_G1CollectForAllocation |
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// - VM_G1IncCollectionPause |
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class VM_G1OperationWithAllocRequest : public VM_CollectForAllocation { |
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protected: |
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bool _pause_succeeded; |
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AllocationContext_t _allocation_context; |
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public: |
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VM_G1OperationWithAllocRequest(uint gc_count_before, |
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size_t word_size, |
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GCCause::Cause gc_cause) |
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: VM_CollectForAllocation(word_size, gc_count_before, gc_cause), |
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_pause_succeeded(false) {} |
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bool pause_succeeded() { return _pause_succeeded; } |
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void set_allocation_context(AllocationContext_t context) { _allocation_context = context; } |
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AllocationContext_t allocation_context() { return _allocation_context; } |
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}; |
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class VM_G1CollectFull: public VM_GC_Operation { |
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public: |
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VM_G1CollectFull(uint gc_count_before, |
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uint full_gc_count_before, |
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GCCause::Cause cause) |
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: VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { } |
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virtual VMOp_Type type() const { return VMOp_G1CollectFull; } |
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virtual void doit(); |
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virtual const char* name() const { |
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return "full garbage-first collection"; |
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} |
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}; |
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class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest { |
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public: |
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VM_G1CollectForAllocation(uint gc_count_before, |
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size_t word_size); |
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virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; } |
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virtual void doit(); |
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virtual const char* name() const { |
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return "garbage-first collection to satisfy allocation"; |
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} |
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}; |
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class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest { |
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private: |
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bool _should_initiate_conc_mark; |
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bool _should_retry_gc; |
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double _target_pause_time_ms; |
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uint _old_marking_cycles_completed_before; |
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public: |
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VM_G1IncCollectionPause(uint gc_count_before, |
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size_t word_size, |
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bool should_initiate_conc_mark, |
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double target_pause_time_ms, |
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GCCause::Cause gc_cause); |
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virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; } |
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virtual bool doit_prologue(); |
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virtual void doit(); |
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virtual void doit_epilogue(); |
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virtual const char* name() const { |
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return "garbage-first incremental collection pause"; |
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} |
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bool should_retry_gc() const { return _should_retry_gc; } |
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}; |
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// Concurrent GC stop-the-world operations such as remark and cleanup; |
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// consider sharing these with CMS's counterparts. |
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class VM_CGC_Operation: public VM_Operation { |
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VoidClosure* _cl; |
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const char* _printGCMessage; |
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bool _needs_pending_list_lock; |
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ReferencePendingListLocker _pending_list_locker; |
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uint _gc_id; |
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protected: |
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// java.lang.ref.Reference support |
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void acquire_pending_list_lock(); |
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void release_and_notify_pending_list_lock(); |
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public: |
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VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg, bool needs_pending_list_lock) |
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: _cl(cl), _printGCMessage(printGCMsg), _needs_pending_list_lock(needs_pending_list_lock), _gc_id(GCId::current()) {} |
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virtual VMOp_Type type() const { return VMOp_CGC_Operation; } |
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virtual void doit(); |
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virtual bool doit_prologue(); |
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virtual void doit_epilogue(); |
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virtual const char* name() const { |
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return "concurrent gc"; |
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} |
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}; |
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#endif // SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP |