ysr@777: /*
xdono@1279:  * Copyright 2001-2009 Sun Microsystems, Inc.  All Rights Reserved.
ysr@777:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ysr@777:  *
ysr@777:  * This code is free software; you can redistribute it and/or modify it
ysr@777:  * under the terms of the GNU General Public License version 2 only, as
ysr@777:  * published by the Free Software Foundation.
ysr@777:  *
ysr@777:  * This code is distributed in the hope that it will be useful, but WITHOUT
ysr@777:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ysr@777:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ysr@777:  * version 2 for more details (a copy is included in the LICENSE file that
ysr@777:  * accompanied this code).
ysr@777:  *
ysr@777:  * You should have received a copy of the GNU General Public License version
ysr@777:  * 2 along with this work; if not, write to the Free Software Foundation,
ysr@777:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ysr@777:  *
ysr@777:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
ysr@777:  * CA 95054 USA or visit www.sun.com if you need additional information or
ysr@777:  * have any questions.
ysr@777:  *
ysr@777:  */
ysr@777: 
ysr@777: // VM_operations for the G1 collector.
ysr@777: // VM_GC_Operation:
ysr@777: //   - VM_CGC_Operation
ysr@777: //   - VM_G1CollectFull
ysr@777: //   - VM_G1CollectForAllocation
ysr@777: //   - VM_G1IncCollectionPause
ysr@777: //   - VM_G1PopRegionCollectionPause
ysr@777: 
ysr@777: class VM_G1CollectFull: public VM_GC_Operation {
ysr@777:  private:
ysr@777:  public:
ysr@777:   VM_G1CollectFull(int gc_count_before,
ysr@777:                    GCCause::Cause gc_cause)
ysr@777:     : VM_GC_Operation(gc_count_before)
ysr@777:   {
ysr@777:     _gc_cause = gc_cause;
ysr@777:   }
ysr@777:   ~VM_G1CollectFull() {}
ysr@777:   virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
ysr@777:   virtual void doit();
ysr@777:   virtual const char* name() const {
ysr@777:     return "full garbage-first collection";
ysr@777:   }
ysr@777: };
ysr@777: 
ysr@777: class VM_G1CollectForAllocation: public VM_GC_Operation {
ysr@777:  private:
ysr@777:   HeapWord*   _res;
ysr@777:   size_t      _size;                       // size of object to be allocated
ysr@777:  public:
ysr@777:   VM_G1CollectForAllocation(size_t size, int gc_count_before)
ysr@777:     : VM_GC_Operation(gc_count_before) {
ysr@777:     _size        = size;
ysr@777:     _res         = NULL;
ysr@777:   }
ysr@777:   ~VM_G1CollectForAllocation()        {}
ysr@777:   virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
ysr@777:   virtual void doit();
ysr@777:   virtual const char* name() const {
ysr@777:     return "garbage-first collection to satisfy allocation";
ysr@777:   }
ysr@777:   HeapWord* result() { return _res; }
ysr@777: };
ysr@777: 
ysr@777: class VM_G1IncCollectionPause: public VM_GC_Operation {
ysr@777:  public:
ysr@777:   VM_G1IncCollectionPause(int gc_count_before) :
ysr@777:     VM_GC_Operation(gc_count_before) {}
ysr@777:   virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
ysr@777:   virtual void doit();
ysr@777:   virtual const char* name() const {
ysr@777:     return "garbage-first incremental collection pause";
ysr@777:   }
ysr@777: };
ysr@777: 
ysr@777: // Concurrent GC stop-the-world operations such as initial and final mark;
ysr@777: // consider sharing these with CMS's counterparts.
ysr@777: class VM_CGC_Operation: public VM_Operation {
ysr@777:   VoidClosure* _cl;
ysr@777:   const char* _printGCMessage;
ysr@777:  public:
ysr@777:   VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg) :
ysr@777:     _cl(cl),
ysr@777:     _printGCMessage(printGCMsg)
ysr@777:     {}
ysr@777: 
ysr@777:   ~VM_CGC_Operation() {}
ysr@777: 
ysr@777:   virtual VMOp_Type type() const { return VMOp_CGC_Operation; }
ysr@777:   virtual void doit();
ysr@777:   virtual bool doit_prologue();
ysr@777:   virtual void doit_epilogue();
ysr@777:   virtual const char* name() const {
ysr@777:     return "concurrent gc";
ysr@777:   }
ysr@777: };