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comparison src/share/vm/runtime/threadLocalStorage.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children d95b224e9f17
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1997-2003 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 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_threadLocalStorage.cpp.incl"
27
28 // static member initialization
29 int ThreadLocalStorage::_thread_index = -1;
30
31 Thread* ThreadLocalStorage::get_thread_slow() {
32 return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
33 }
34
35 void ThreadLocalStorage::set_thread(Thread* thread) {
36 pd_set_thread(thread);
37
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 }
43
44 void ThreadLocalStorage::init() {
45 assert(ThreadLocalStorage::thread_index() == -1, "More than one attempt to initialize threadLocalStorage");
46 pd_init();
47 set_thread_index(os::allocate_thread_local_storage());
48 generate_code_for_get_thread();
49 }