jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/vm_operations

src/share/vm/gc_implementation/g1/vm_operations_g1.hpp@5f429ee79634 (annotated)

src/share/vm/gc_implementation/g1/vm_operations_g1.hpp

Mon, 09 Aug 2010 05:41:05 -0700

author: jcoomes
date: Mon, 09 Aug 2010 05:41:05 -0700
changeset 2064: 5f429ee79634
parent 2011: 4e5661ba9d98
child 2314: f95d63e2154a
permissions: -rw-r--r--

6966222: G1: simplify TaskQueue overflow handling
Reviewed-by: tonyp, ysr

 /*
  * 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 {
  public:
   VM_G1CollectFull(unsigned int gc_count_before,
                    unsigned int full_gc_count_before,
                    GCCause::Cause cause)
     : VM_GC_Operation(gc_count_before, full_gc_count_before) {
     _gc_cause = 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 {
 private:
   bool _should_initiate_conc_mark;
   double _target_pause_time_ms;
   unsigned int _full_collections_completed_before;
 public:
   VM_G1IncCollectionPause(unsigned int   gc_count_before,
                           bool           should_initiate_conc_mark,
                           double         target_pause_time_ms,
                           GCCause::Cause cause)
     : VM_GC_Operation(gc_count_before),
       _full_collections_completed_before(0),
       _should_initiate_conc_mark(should_initiate_conc_mark),
       _target_pause_time_ms(target_pause_time_ms) {
     guarantee(target_pause_time_ms > 0.0,
               err_msg("target_pause_time_ms = %1.6lf should be positive",
                       target_pause_time_ms));
     _gc_cause = cause;
   }
   virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
   virtual void doit();
   virtual void doit_epilogue();
   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";
   }
 };

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src/share/vm/gc_implementation/g1/vm_operations_g1.hpp@5f429ee79634 (annotated)

src/share/vm/gc_implementation/g1/vm_operations_g1.hpp