Mercurial > hg > truffle
view src/share/vm/gc_implementation/g1/vm_operations_g1.hpp @ 9099:ed81c74f92ff
Cache boolean flags instead of full Annotation objects
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 12 Apr 2013 16:05:56 -0700 |
parents | 37552638d24a |
children | 227a9e5e4b4a |
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/* * Copyright (c) 2001, 2012, 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_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP #define SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP #include "gc_implementation/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_GC_Operation { protected: size_t _word_size; HeapWord* _result; bool _pause_succeeded; public: VM_G1OperationWithAllocRequest(unsigned int gc_count_before, size_t word_size, GCCause::Cause gc_cause) : VM_GC_Operation(gc_count_before, gc_cause), _word_size(word_size), _result(NULL), _pause_succeeded(false) { } HeapWord* result() { return _result; } bool pause_succeeded() { return _pause_succeeded; } }; class VM_G1CollectFull: public VM_GC_Operation { public: VM_G1CollectFull(unsigned int gc_count_before, unsigned int full_gc_count_before, GCCause::Cause cause) : VM_GC_Operation(gc_count_before, cause, full_gc_count_before) { } 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(unsigned int 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; unsigned int _old_marking_cycles_completed_before; public: VM_G1IncCollectionPause(unsigned int 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_pll; 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_pll) : _cl(cl), _printGCMessage(printGCMsg), _needs_pll(needs_pll) { } 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_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP