| /* |
| * Copyright (c) 2001, 2016, 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_VM_GC_G1_VM_OPERATIONS_G1_HPP |
| #define SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP |
| |
| #include "gc/g1/g1AllocationContext.hpp" |
| #include "gc/shared/gcId.hpp" |
| #include "gc/shared/referencePendingListLocker.hpp" |
| #include "gc/shared/vmGCOperations.hpp" |
| |
| // VM_operations for the G1 collector. |
| // VM_GC_Operation: |
| // - VM_CGC_Operation |
| // - VM_G1CollectFull |
| // - VM_G1OperationWithAllocRequest |
| // - VM_G1CollectForAllocation |
| // - VM_G1IncCollectionPause |
| |
| class VM_G1OperationWithAllocRequest : public VM_CollectForAllocation { |
| protected: |
| bool _pause_succeeded; |
| AllocationContext_t _allocation_context; |
| |
| public: |
| VM_G1OperationWithAllocRequest(uint gc_count_before, |
| size_t word_size, |
| GCCause::Cause gc_cause) |
| : VM_CollectForAllocation(word_size, gc_count_before, gc_cause), |
| _pause_succeeded(false) {} |
| bool pause_succeeded() { return _pause_succeeded; } |
| void set_allocation_context(AllocationContext_t context) { _allocation_context = context; } |
| AllocationContext_t allocation_context() { return _allocation_context; } |
| }; |
| |
| class VM_G1CollectFull: public VM_GC_Operation { |
| 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) { } |
| virtual VMOp_Type type() const { return VMOp_G1CollectFull; } |
| virtual void doit(); |
| virtual const char* name() const { |
| return "full garbage-first collection"; |
| } |
| }; |
| |
| class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest { |
| public: |
| VM_G1CollectForAllocation(uint gc_count_before, |
| size_t word_size); |
| virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; } |
| virtual void doit(); |
| virtual const char* name() const { |
| return "garbage-first collection to satisfy allocation"; |
| } |
| }; |
| |
| class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest { |
| private: |
| bool _should_initiate_conc_mark; |
| bool _should_retry_gc; |
| double _target_pause_time_ms; |
| uint _old_marking_cycles_completed_before; |
| public: |
| VM_G1IncCollectionPause(uint gc_count_before, |
| size_t word_size, |
| bool should_initiate_conc_mark, |
| double target_pause_time_ms, |
| GCCause::Cause gc_cause); |
| virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; } |
| virtual bool doit_prologue(); |
| virtual void doit(); |
| virtual void doit_epilogue(); |
| virtual const char* name() const { |
| return "garbage-first incremental collection pause"; |
| } |
| bool should_retry_gc() const { return _should_retry_gc; } |
| }; |
| |
| // Concurrent GC stop-the-world operations such as remark and cleanup; |
| // consider sharing these with CMS's counterparts. |
| class VM_CGC_Operation: public VM_Operation { |
| VoidClosure* _cl; |
| const char* _printGCMessage; |
| bool _needs_pending_list_lock; |
| ReferencePendingListLocker _pending_list_locker; |
| uint _gc_id; |
| |
| protected: |
| // java.lang.ref.Reference support |
| void acquire_pending_list_lock(); |
| void release_and_notify_pending_list_lock(); |
| |
| public: |
| VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg, bool needs_pending_list_lock) |
| : _cl(cl), _printGCMessage(printGCMsg), _needs_pending_list_lock(needs_pending_list_lock), _gc_id(GCId::current()) {} |
| virtual VMOp_Type type() const { return VMOp_CGC_Operation; } |
| virtual void doit(); |
| virtual bool doit_prologue(); |
| virtual void doit_epilogue(); |
| virtual const char* name() const { |
| return "concurrent gc"; |
| } |
| }; |
| |
| #endif // SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP |