jdk8-mips64-public/hotspot: src/share/vm/runtime/threadLocalStorage.cpp@0715f0cf171d

     1 /*

     2  * Copyright (c) 1997, 2008, 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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    22  *

    23  */

    25 # include "incls/_precompiled.incl"

    26 # include "incls/_threadLocalStorage.cpp.incl"

    28 // static member initialization

    29 int ThreadLocalStorage::_thread_index = -1;

    31 Thread* ThreadLocalStorage::get_thread_slow() {

    32   return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());

    33 }

    35 void ThreadLocalStorage::set_thread(Thread* thread) {

    36   pd_set_thread(thread);

    38   // The following ensure that any optimization tricks we have tried

    39   // did not backfire on us:

    40   guarantee(get_thread()      == thread, "must be the same thread, quickly");

    41   guarantee(get_thread_slow() == thread, "must be the same thread, slowly");

    42 }

    44 void ThreadLocalStorage::init() {

    45   assert(!is_initialized(),

    46          "More than one attempt to initialize threadLocalStorage");

    47   pd_init();

    48   set_thread_index(os::allocate_thread_local_storage());

    49   generate_code_for_get_thread();

    50 }

    52 bool ThreadLocalStorage::is_initialized() {

    53     return (thread_index() != -1);

    54 }

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