jdk8-mips64-public/hotspot: src/share/vm/gc_interface/gcCause.hpp@a92cdbac8b9e

7081933: Use zeroing elimination optimization for large array
Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it.
Reviewed-by: twisti

     1 /*

     2  * Copyright (c) 2002, 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  *

    23  */

    25 #ifndef SHARE_VM_GC_INTERFACE_GCCAUSE_HPP

    26 #define SHARE_VM_GC_INTERFACE_GCCAUSE_HPP

    28 #include "memory/allocation.hpp"

    30 //

    31 // This class exposes implementation details of the various

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

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

    34 // and implemenation-private "causes".

    35 //

    37 class GCCause : public AllStatic {

    38  public:

    39   enum Cause {

    40     /* public */

    41     _java_lang_system_gc,

    42     _full_gc_alot,

    43     _scavenge_alot,

    44     _allocation_profiler,

    45     _jvmti_force_gc,

    46     _gc_locker,

    47     _heap_inspection,

    48     _heap_dump,

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

    51     _no_gc,

    52     _no_cause_specified,

    53     _allocation_failure,

    55     /* implementation specific */

    57     _tenured_generation_full,

    58     _permanent_generation_full,

    60     _cms_generation_full,

    61     _cms_initial_mark,

    62     _cms_final_remark,

    64     _old_generation_expanded_on_last_scavenge,

    65     _old_generation_too_full_to_scavenge,

    66     _adaptive_size_policy,

    68     _g1_inc_collection_pause,

    70     _last_ditch_collection,

    71     _last_gc_cause

    72   };

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

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

    76             cause == GCCause::_jvmti_force_gc);

    77   }

    79   inline static bool is_serviceability_requested_gc(GCCause::Cause

    80                                                              cause) {

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

    82             cause == GCCause::_heap_inspection ||

    83             cause == GCCause::_heap_dump);

    84   }

    86   // Return a string describing the GCCause.

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

    88 };

    90 #endif // SHARE_VM_GC_INTERFACE_GCCAUSE_HPP

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

src/share/vm/gc_interface/gcCause.hpp@a92cdbac8b9e

src/share/vm/gc_interface/gcCause.hpp