jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/shared/gSpaceCounters.hpp@b9a9ed0f8eeb

7197424: update copyright year to match last edit in jdk8 hotspot repository
Summary: Update copyright year to 2012 for relevant files
Reviewed-by: dholmes, coleenp

     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 #ifndef SERIALGC

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

    30 #include "memory/generation.hpp"

    31 #include "runtime/perfData.hpp"

    32 #endif

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

    35 // that track a space;

    37 class GSpaceCounters: public CHeapObj<mtGC> {

    38   friend class VMStructs;

    40  private:

    41   PerfVariable*      _capacity;

    42   PerfVariable*      _used;

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

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

    46   // PerfConstant*     _size;

    48   Generation*       _gen;

    49   char*             _name_space;

    51  public:

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

    54                  GenerationCounters* gc, bool sampled=true);

    56   ~GSpaceCounters() {

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

    58   }

    60   inline void update_capacity() {

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

    62   }

    64   inline void update_used() {

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

    66   }

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

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

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

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

    72   // calls to it.

    73   //

    74   inline void update_used(size_t used) {

    75     _used->set_value(used);

    76   }

    78   inline void inc_used(size_t size) {

    79     _used->inc(size);

    80   }

    82   debug_only(

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

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

    85     jlong used() {

    86       return _used->get_value();

    87     }

    88     jlong capacity() {

    89       return _used->get_value();

    90     }

    91   )

    93   inline void update_all() {

    94     update_used();

    95     update_capacity();

    96   }

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

    99 };

   101 class GenerationUsedHelper : public PerfLongSampleHelper {

   102   private:

   103     Generation* _gen;

   105   public:

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

   108     inline jlong take_sample() {

   109       return _gen->used();

   110     }

   111 };

   113 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GSPACECOUNTERS_HPP

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

src/share/vm/gc_implementation/shared/gSpaceCounters.hpp@b9a9ed0f8eeb

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