jdk8-mips64-public/hotspot: src/share/vm/gc_interface/gcCause.hpp@a61af66fc99e

     1 /*

     2  * Copyright 2002-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 //

    26 // This class exposes implementation details of the various

    27 // collector(s), and we need to be very careful with it. If

    28 // use of this class grows, we should split it into public

    29 // and implemenation-private "causes".

    30 //

    32 class GCCause : public AllStatic {

    33  public:

    34   enum Cause {

    35     /* public */

    36     _java_lang_system_gc,

    37     _full_gc_alot,

    38     _scavenge_alot,

    39     _allocation_profiler,

    40     _jvmti_force_gc,

    41     _gc_locker,

    42     _heap_inspection,

    43     _heap_dump,

    45     /* implementation independent, but reserved for GC use */

    46     _no_gc,

    47     _no_cause_specified,

    48     _allocation_failure,

    50     /* implementation specific */

    52     _tenured_generation_full,

    53     _permanent_generation_full,

    55     _cms_generation_full,

    56     _cms_initial_mark,

    57     _cms_final_remark,

    59     _old_generation_expanded_on_last_scavenge,

    60     _old_generation_too_full_to_scavenge,

    61     _adaptive_size_policy,

    63     _last_ditch_collection,

    64     _last_gc_cause

    65   };

    67   inline static bool is_user_requested_gc(GCCause::Cause cause) {

    68     return (cause == GCCause::_java_lang_system_gc ||

    69             cause == GCCause::_jvmti_force_gc);

    70   }

    71   inline static bool is_serviceability_requested_gc(GCCause::Cause

    72                                                              cause) {

    73     return (cause == GCCause::_jvmti_force_gc ||

    74             cause == GCCause::_heap_inspection ||

    75             cause == GCCause::_heap_dump);

    76   }

    77   // Return a string describing the GCCause.

    78   static const char* to_string(GCCause::Cause cause);

    79   // Return true if the GCCause is for a full collection.

    80   static bool is_for_full_collection(GCCause::Cause cause) PRODUCT_RETURN0;

    81 };

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