jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/shared/gSpaceCounters.hpp@db9981fd3124

8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
Summary: Rename INCLUDE_ALTERNATE_GCS to INCLUDE_ALL_GCS and replace SERIALGC with INCLUDE_ALL_GCS.
Reviewed-by: coleenp, stefank

     1 /*

     2  * Copyright (c) 2002, 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_SHARED_GSPACECOUNTERS_HPP

    26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP

    28 #include "utilities/macros.hpp"

    29 #if INCLUDE_ALL_GCS

    30 #include "gc_implementation/shared/generationCounters.hpp"

    31 #include "memory/generation.hpp"

    32 #include "runtime/perfData.hpp"

    33 #endif // INCLUDE_ALL_GCS

    35 // A GSpaceCounter is a holder class for performance counters

    36 // that track a space;

    38 class GSpaceCounters: public CHeapObj<mtGC> {

    39   friend class VMStructs;

    41  private:

    42   PerfVariable*      _capacity;

    43   PerfVariable*      _used;

    45   // Constant PerfData types don't need to retain a reference.

    46   // However, it's a good idea to document them here.

    47   // PerfConstant*     _size;

    49   Generation*       _gen;

    50   char*             _name_space;

    52  public:

    54   GSpaceCounters(const char* name, int ordinal, size_t max_size, Generation* g,

    55                  GenerationCounters* gc, bool sampled=true);

    57   ~GSpaceCounters() {

    58     if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtGC);

    59   }

    61   inline void update_capacity() {

    62     _capacity->set_value(_gen->capacity());

    63   }

    65   inline void update_used() {

    66     _used->set_value(_gen->used());

    67   }

    69   // special version of update_used() to allow the used value to be

    70   // passed as a parameter. This method can can be used in cases were

    71   // the  utilization is already known and/or when the _gen->used()

    72   // method is known to be expensive and we want to avoid unnecessary

    73   // calls to it.

    74   //

    75   inline void update_used(size_t used) {

    76     _used->set_value(used);

    77   }

    79   inline void inc_used(size_t size) {

    80     _used->inc(size);

    81   }

    83   debug_only(

    84     // for security reasons, we do not allow arbitrary reads from

    85     // the counters as they may live in shared memory.

    86     jlong used() {

    87       return _used->get_value();

    88     }

    89     jlong capacity() {

    90       return _used->get_value();

    91     }

    92   )

    94   inline void update_all() {

    95     update_used();

    96     update_capacity();

    97   }

    99   const char* name_space() const        { return _name_space; }

   100 };

   102 class GenerationUsedHelper : public PerfLongSampleHelper {

   103   private:

   104     Generation* _gen;

   106   public:

   107     GenerationUsedHelper(Generation* g) : _gen(g) { }

   109     inline jlong take_sample() {

   110       return _gen->used();

   111     }

   112 };

   114 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/gc_implementation/shared/gSpaceCounters.hpp@db9981fd3124

src/share/vm/gc_implementation/shared/gSpaceCounters.hpp