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

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   1 /*
   2  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  28 #include "gc_implementation/shared/vmGCOperations.hpp"
  29 
  30 // VM_operations for the G1 collector.
  31 // VM_GC_Operation:
  32 //   - VM_CGC_Operation
  33 //   - VM_G1CollectFull
  34 //   - VM_G1OperationWithAllocRequest
  35 //     - VM_G1CollectForAllocation
  36 //     - VM_G1IncCollectionPause
  37 
  38 class VM_G1OperationWithAllocRequest: public VM_GC_Operation {
  39 protected:
  40   size_t    _word_size;
  41   HeapWord* _result;
  42   bool      _pause_succeeded;
  43 
  44 public:
  45   VM_G1OperationWithAllocRequest(unsigned int gc_count_before,
  46                                  size_t       word_size)
  47     : VM_GC_Operation(gc_count_before),
  48       _word_size(word_size), _result(NULL), _pause_succeeded(false) { }


  49   HeapWord* result() { return _result; }
  50   bool pause_succeeded() { return _pause_succeeded; }
  51 };
  52 
  53 class VM_G1CollectFull: public VM_GC_Operation {
  54 public:
  55   VM_G1CollectFull(unsigned int gc_count_before,
  56                    unsigned int full_gc_count_before,
  57                    GCCause::Cause cause)
  58     : VM_GC_Operation(gc_count_before, full_gc_count_before) {
  59     _gc_cause = cause;
  60   }
  61   virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
  62   virtual void doit();
  63   virtual const char* name() const {
  64     return "full garbage-first collection";
  65   }
  66 };
  67 
  68 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {


   1 /*
   2  * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  28 #include "gc_implementation/shared/vmGCOperations.hpp"
  29 
  30 // VM_operations for the G1 collector.
  31 // VM_GC_Operation:
  32 //   - VM_CGC_Operation
  33 //   - VM_G1CollectFull
  34 //   - VM_G1OperationWithAllocRequest
  35 //     - VM_G1CollectForAllocation
  36 //     - VM_G1IncCollectionPause
  37 
  38 class VM_G1OperationWithAllocRequest: public VM_GC_Operation {
  39 protected:
  40   size_t    _word_size;
  41   HeapWord* _result;
  42   bool      _pause_succeeded;
  43 
  44 public:
  45   VM_G1OperationWithAllocRequest(unsigned int gc_count_before,
  46                                  size_t       word_size)
  47     : VM_GC_Operation(gc_count_before),
  48       _word_size(word_size), _result(NULL), _pause_succeeded(false) {
  49     _gc_cause = GCCause::_allocation_failure;
  50   }
  51   HeapWord* result() { return _result; }
  52   bool pause_succeeded() { return _pause_succeeded; }
  53 };
  54 
  55 class VM_G1CollectFull: public VM_GC_Operation {
  56 public:
  57   VM_G1CollectFull(unsigned int gc_count_before,
  58                    unsigned int full_gc_count_before,
  59                    GCCause::Cause cause)
  60     : VM_GC_Operation(gc_count_before, full_gc_count_before) {
  61     _gc_cause = cause;
  62   }
  63   virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
  64   virtual void doit();
  65   virtual const char* name() const {
  66     return "full garbage-first collection";
  67   }
  68 };
  69 
  70 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {