jdk8-mips64-public/hotspot: src/share/vm/prims/jvmtiManageCapabilities.hpp@fa83ab460c54

6988353: refactor contended sync subsystem
Summary: reduce complexity by factoring synchronizer.cpp
Reviewed-by: dholmes, never, coleenp

     1 /*

     2  * Copyright (c) 2003, 2005, 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

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    23  */

    25 #ifndef _JAVA_JVMTI_MANAGE_CAPABILITIES_H_

    26 #define _JAVA_JVMTI_MANAGE_CAPABILITIES_H_

    30 class JvmtiManageCapabilities : public AllStatic {

    32 private:

    34   // these four capabilities sets represent all potentially

    35   // available capabilities.  They are disjoint, covering

    36   // the four cases: (OnLoad vs OnLoad+live phase) X

    37   // (one environment vs any environment).

    38   static jvmtiCapabilities always_capabilities;

    39   static jvmtiCapabilities onload_capabilities;

    40   static jvmtiCapabilities always_solo_capabilities;

    41   static jvmtiCapabilities onload_solo_capabilities;

    43   // solo capabilities that have not been grabbed

    44   static jvmtiCapabilities always_solo_remaining_capabilities;

    45   static jvmtiCapabilities onload_solo_remaining_capabilities;

    47   // all capabilities ever acquired

    48   static jvmtiCapabilities acquired_capabilities;

    50   // basic intenal operations

    51   static jvmtiCapabilities *either(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);

    52   static jvmtiCapabilities *both(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);

    53   static jvmtiCapabilities *exclude(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);

    54   static bool has_some(const jvmtiCapabilities *a);

    55   static void update();

    57   // init functions

    58   static jvmtiCapabilities init_always_capabilities();

    59   static jvmtiCapabilities init_onload_capabilities();

    60   static jvmtiCapabilities init_always_solo_capabilities();

    61   static jvmtiCapabilities init_onload_solo_capabilities();

    63 public:

    64   static void initialize();

    66   // may have to adjust always capabilities when VM initialization has completed

    67   static void recompute_always_capabilities();

    69   // queries and actions

    70   static void get_potential_capabilities(const jvmtiCapabilities *current,

    71                                          const jvmtiCapabilities *prohibited,

    72                                          jvmtiCapabilities *result);

    73   static jvmtiError add_capabilities(const jvmtiCapabilities *current,

    74                                      const jvmtiCapabilities *prohibited,

    75                                      const jvmtiCapabilities *desired,

    76                                      jvmtiCapabilities *result);

    77   static void relinquish_capabilities(const jvmtiCapabilities *current,

    78                                       const jvmtiCapabilities *unwanted,

    79                                       jvmtiCapabilities *result);

    80   static void copy_capabilities(const jvmtiCapabilities *from, jvmtiCapabilities *to);

    82 #ifndef PRODUCT

    83   static void print(const jvmtiCapabilities* caps);

    84 #endif

    85 };

    87 #endif   /* _JAVA_JVMTI_MANAGE_CAPABILITIES_H_ */

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