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

src/share/vm/gc_implementation/g1/vm_operations_g1.hpp@fb69749583e8 (annotated)

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

Thu, 09 Apr 2015 15:58:49 +0200

author: mlarsson
date: Thu, 09 Apr 2015 15:58:49 +0200
changeset 7686: fb69749583e8
parent 7285: 1d6eb209432a
child 7687: af8f16ac392c
permissions: -rw-r--r--

8072621: Clean up around VM_GC_Operations
Reviewed-by: brutisso, jmasa

 /*
  * Copyright (c) 2001, 2015, 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_G1_VM_OPERATIONS_G1_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP
 #include "gc_implementation/g1/g1AllocationContext.hpp"
 #include "gc_implementation/shared/vmGCOperations.hpp"
 // VM_operations for the G1 collector.
 // VM_GC_Operation:
 //   - VM_CGC_Operation
 //   - VM_G1CollectFull
 //   - VM_G1OperationWithAllocRequest
 //     - VM_G1CollectForAllocation
 //     - VM_G1IncCollectionPause
 class VM_G1OperationWithAllocRequest: public VM_GC_Operation {
 protected:
   size_t    _word_size;
   HeapWord* _result;
   bool      _pause_succeeded;
   AllocationContext_t _allocation_context;
 public:
   VM_G1OperationWithAllocRequest(uint           gc_count_before,
                                  size_t         word_size,
                                  GCCause::Cause gc_cause)
     : VM_GC_Operation(gc_count_before, gc_cause),
       _word_size(word_size), _result(NULL), _pause_succeeded(false) { }
   HeapWord* result() { return _result; }
   bool pause_succeeded() { return _pause_succeeded; }
   void set_allocation_context(AllocationContext_t context) { _allocation_context = context; }
   AllocationContext_t  allocation_context() { return _allocation_context; }
 };
 class VM_G1CollectFull: public VM_GC_Operation {
 public:
   VM_G1CollectFull(uint gc_count_before,
                    uint full_gc_count_before,
                    GCCause::Cause cause)
     : VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { }
   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_G1OperationWithAllocRequest {
 public:
   VM_G1CollectForAllocation(uint         gc_count_before,
                             size_t       word_size);
   virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
   virtual void doit();
   virtual const char* name() const {
     return "garbage-first collection to satisfy allocation";
   }
 };
 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest {
 private:
   bool         _should_initiate_conc_mark;
   bool         _should_retry_gc;
   double       _target_pause_time_ms;
   uint         _old_marking_cycles_completed_before;
 public:
   VM_G1IncCollectionPause(uint           gc_count_before,
                           size_t         word_size,
                           bool           should_initiate_conc_mark,
                           double         target_pause_time_ms,
                           GCCause::Cause gc_cause);
   virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
   virtual bool doit_prologue();
   virtual void doit();
   virtual void doit_epilogue();
   virtual const char* name() const {
     return "garbage-first incremental collection pause";
   }
   bool should_retry_gc() const { return _should_retry_gc; }
 };
 // Concurrent GC stop-the-world operations such as remark and cleanup;
 // consider sharing these with CMS's counterparts.
 class VM_CGC_Operation: public VM_Operation {
   VoidClosure* _cl;
   const char* _printGCMessage;
   bool _needs_pll;
 protected:
   // java.lang.ref.Reference support
   void acquire_pending_list_lock();
   void release_and_notify_pending_list_lock();
 public:
   VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg, bool needs_pll)
     : _cl(cl), _printGCMessage(printGCMsg), _needs_pll(needs_pll) { }
   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";
   }
 };
 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/vm_operations_g1.hpp@fb69749583e8 (annotated)

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