Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/vm_operations_g1.hpp @ 342:37f87013dfd8
6711316: Open source the Garbage-First garbage collector
Summary: First mercurial integration of the code for the Garbage-First garbage collector.
Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author | ysr |
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date | Thu, 05 Jun 2008 15:57:56 -0700 |
parents | |
children | 96b229c54d1e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/gc_implementation/g1/vm_operations_g1.hpp Thu Jun 05 15:57:56 2008 -0700 @@ -0,0 +1,114 @@ +/* + * Copyright 2001-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.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) : + VM_GC_Operation(gc_count_before) {} + virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; } + virtual void doit(); + virtual const char* name() const { + return "garbage-first incremental collection pause"; + } +}; + +class VM_G1PopRegionCollectionPause: public VM_GC_Operation { + HeapRegion* _pop_region; + public: + VM_G1PopRegionCollectionPause(int gc_count_before, HeapRegion* pop_region) : + VM_GC_Operation(gc_count_before), + _pop_region(pop_region) + {} + virtual VMOp_Type type() const { return VMOp_G1PopRegionCollectionPause; } + virtual void doit(); + virtual const char* name() const { + return "garbage-first popular region 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"; + } +};