Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/concurrentMarkSweep/vmCMSOperations.hpp @ 8827:42e370795a39
8010818: NPG: Remove metaspace memory pools
Reviewed-by: mgerdin, stefank
author | ehelin |
---|---|
date | Wed, 27 Mar 2013 10:55:37 +0100 |
parents | a181f3a124dd |
children |
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/* * Copyright (c) 2005, 2011, 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_CONCURRENTMARKSWEEP_VMCMSOPERATIONS_HPP #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_VMCMSOPERATIONS_HPP #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp" #include "gc_implementation/shared/vmGCOperations.hpp" #include "gc_interface/gcCause.hpp" #include "runtime/vm_operations.hpp" // The VM_CMS_Operation is slightly different from // a VM_GC_Operation -- and would not have subclassed easily // to VM_GC_Operation without several changes to VM_GC_Operation. // To minimize the changes, we have replicated some of the VM_GC_Operation // functionality here. We will consolidate that back by doing subclassing // as appropriate in Dolphin. // // VM_Operation // VM_CMS_Operation // - implements the common portion of work done in support // of CMS' stop-world phases (initial mark and remark). // // VM_CMS_Initial_Mark // VM_CMS_Final_Mark // // Forward decl. class CMSCollector; class VM_CMS_Operation: public VM_Operation { protected: CMSCollector* _collector; // associated collector bool _prologue_succeeded; // whether doit_prologue succeeded bool lost_race() const; // java.lang.ref.Reference support void acquire_pending_list_lock(); void release_and_notify_pending_list_lock(); public: VM_CMS_Operation(CMSCollector* collector): _collector(collector), _prologue_succeeded(false) {} ~VM_CMS_Operation() {} // The legal collector state for executing this CMS op. virtual const CMSCollector::CollectorState legal_state() const = 0; // Whether the pending list lock needs to be held virtual const bool needs_pll() const = 0; // Execute operations in the context of the caller, // prior to execution of the vm operation itself. virtual bool doit_prologue(); // Execute operations in the context of the caller, // following completion of the vm operation. virtual void doit_epilogue(); virtual bool evaluate_at_safepoint() const { return true; } virtual bool is_cheap_allocated() const { return false; } virtual bool allow_nested_vm_operations() const { return false; } bool prologue_succeeded() const { return _prologue_succeeded; } void verify_before_gc(); void verify_after_gc(); }; // VM_CMS_Operation for the initial marking phase of CMS. class VM_CMS_Initial_Mark: public VM_CMS_Operation { public: VM_CMS_Initial_Mark(CMSCollector* _collector) : VM_CMS_Operation(_collector) {} virtual VMOp_Type type() const { return VMOp_CMS_Initial_Mark; } virtual void doit(); virtual const CMSCollector::CollectorState legal_state() const { return CMSCollector::InitialMarking; } virtual const bool needs_pll() const { return false; } }; // VM_CMS_Operation for the final remark phase of CMS. class VM_CMS_Final_Remark: public VM_CMS_Operation { public: VM_CMS_Final_Remark(CMSCollector* _collector) : VM_CMS_Operation(_collector) {} virtual VMOp_Type type() const { return VMOp_CMS_Final_Remark; } virtual void doit(); virtual const CMSCollector::CollectorState legal_state() const { return CMSCollector::FinalMarking; } virtual const bool needs_pll() const { return true; } }; // VM operation to invoke a concurrent collection of the heap as a // GenCollectedHeap heap. class VM_GenCollectFullConcurrent: public VM_GC_Operation { bool _disabled_icms; public: VM_GenCollectFullConcurrent(unsigned int gc_count_before, unsigned int full_gc_count_before, GCCause::Cause gc_cause) : VM_GC_Operation(gc_count_before, gc_cause, full_gc_count_before, true /* full */), _disabled_icms(false) { assert(FullGCCount_lock != NULL, "Error"); assert(UseAsyncConcMarkSweepGC, "Else will hang caller"); } ~VM_GenCollectFullConcurrent() {} virtual VMOp_Type type() const { return VMOp_GenCollectFullConcurrent; } virtual void doit(); virtual void doit_epilogue(); virtual bool is_cheap_allocated() const { return false; } virtual bool evaluate_at_safepoint() const; }; #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_VMCMSOPERATIONS_HPP