Mercurial > hg > truffle
view src/share/vm/gc_implementation/g1/vm_operations_g1.hpp @ 1610:79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
Summary: First, change the guarantee to raising a vm error. Second, set the interval dynamically, and based on the pause time target, if it is not set explicitly.
Reviewed-by: ysr, johnc
author | tonyp |
---|---|
date | Fri, 07 May 2010 13:14:41 -0400 |
parents | c18cbe5936b8 |
children | 4e5661ba9d98 |
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/* * Copyright (c) 2001, 2009, 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. * */ // VM_operations for the G1 collector. // VM_GC_Operation: // - VM_CGC_Operation // - VM_G1CollectFull // - VM_G1CollectForAllocation // - VM_G1IncCollectionPause // - VM_G1PopRegionCollectionPause class VM_G1CollectFull: public VM_GC_Operation { private: public: VM_G1CollectFull(int gc_count_before, GCCause::Cause gc_cause) : VM_GC_Operation(gc_count_before) { _gc_cause = gc_cause; } ~VM_G1CollectFull() {} 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_GC_Operation { private: HeapWord* _res; size_t _size; // size of object to be allocated public: VM_G1CollectForAllocation(size_t size, int gc_count_before) : VM_GC_Operation(gc_count_before) { _size = size; _res = NULL; } ~VM_G1CollectForAllocation() {} virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; } virtual void doit(); virtual const char* name() const { return "garbage-first collection to satisfy allocation"; } HeapWord* result() { return _res; } }; class VM_G1IncCollectionPause: public VM_GC_Operation { public: VM_G1IncCollectionPause(int gc_count_before, GCCause::Cause gc_cause = GCCause::_g1_inc_collection_pause) : VM_GC_Operation(gc_count_before) { _gc_cause = gc_cause; } virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; } virtual void doit(); virtual const char* name() const { return "garbage-first incremental collection pause"; } }; // Concurrent GC stop-the-world operations such as initial and final mark; // consider sharing these with CMS's counterparts. class VM_CGC_Operation: public VM_Operation { VoidClosure* _cl; const char* _printGCMessage; public: VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg) : _cl(cl), _printGCMessage(printGCMsg) {} ~VM_CGC_Operation() {} 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"; } };