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

8014277: Remove ObjectClosure as base class for BoolObjectClosure
Reviewed-by: brutisso, tschatzl

     1 /*

     2  * Copyright (c) 2001, 2012, 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  *

    23  */

    25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP

    26 #define SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP

    28 #include "gc_implementation/shared/vmGCOperations.hpp"

    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

    38 class VM_G1OperationWithAllocRequest: public VM_GC_Operation {

    39 protected:

    40   size_t    _word_size;

    41   HeapWord* _result;

    42   bool      _pause_succeeded;

    44 public:

    45   VM_G1OperationWithAllocRequest(unsigned int gc_count_before,

    46                                  size_t       word_size,

    47                                  GCCause::Cause gc_cause)

    48     : VM_GC_Operation(gc_count_before, gc_cause),

    49       _word_size(word_size), _result(NULL), _pause_succeeded(false) { }

    50   HeapWord* result() { return _result; }

    51   bool pause_succeeded() { return _pause_succeeded; }

    52 };

    54 class VM_G1CollectFull: public VM_GC_Operation {

    55 public:

    56   VM_G1CollectFull(unsigned int gc_count_before,

    57                    unsigned int full_gc_count_before,

    58                    GCCause::Cause cause)

    59     : VM_GC_Operation(gc_count_before, cause, full_gc_count_before) { }

    60   virtual VMOp_Type type() const { return VMOp_G1CollectFull; }

    61   virtual void doit();

    62   virtual const char* name() const {

    63     return "full garbage-first collection";

    64   }

    65 };

    67 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {

    68 public:

    69   VM_G1CollectForAllocation(unsigned int gc_count_before,

    70                             size_t       word_size);

    71   virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }

    72   virtual void doit();

    73   virtual const char* name() const {

    74     return "garbage-first collection to satisfy allocation";

    75   }

    76 };

    78 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest {

    79 private:

    80   bool         _should_initiate_conc_mark;

    81   bool         _should_retry_gc;

    82   double       _target_pause_time_ms;

    83   unsigned int _old_marking_cycles_completed_before;

    84 public:

    85   VM_G1IncCollectionPause(unsigned int   gc_count_before,

    86                           size_t         word_size,

    87                           bool           should_initiate_conc_mark,

    88                           double         target_pause_time_ms,

    89                           GCCause::Cause gc_cause);

    90   virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }

    91   virtual bool doit_prologue();

    92   virtual void doit();

    93   virtual void doit_epilogue();

    94   virtual const char* name() const {

    95     return "garbage-first incremental collection pause";

    96   }

    97   bool should_retry_gc() const { return _should_retry_gc; }

    98 };

   100 // Concurrent GC stop-the-world operations such as remark and cleanup;

   101 // consider sharing these with CMS's counterparts.

   102 class VM_CGC_Operation: public VM_Operation {

   103   VoidClosure* _cl;

   104   const char* _printGCMessage;

   105   bool _needs_pll;

   107 protected:

   108   // java.lang.ref.Reference support

   109   void acquire_pending_list_lock();

   110   void release_and_notify_pending_list_lock();

   112 public:

   113   VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg, bool needs_pll)

   114     : _cl(cl), _printGCMessage(printGCMsg), _needs_pll(needs_pll) { }

   115   virtual VMOp_Type type() const { return VMOp_CGC_Operation; }

   116   virtual void doit();

   117   virtual bool doit_prologue();

   118   virtual void doit_epilogue();

   119   virtual const char* name() const {

   120     return "concurrent gc";

   121   }

   122 };

   124 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP

src/share/vm/gc_implementation/g1/vm_operations_g1.hpp@001ec9515f84