1 /*
2 * Copyright (c) 1997, 2014, 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 */
24
25 #include "precompiled.hpp"
26 #include "runtime/os.inline.hpp"
27 #include "runtime/thread.inline.hpp"
28 #include "runtime/threadLocalStorage.hpp"
29
30 // static member initialization
31 int ThreadLocalStorage::_thread_index = -1;
32
33 Thread* ThreadLocalStorage::get_thread_slow() {
34 return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
35 }
36
37 void ThreadLocalStorage::set_thread(Thread* thread) {
38 pd_set_thread(thread);
39
40 // The following ensure that any optimization tricks we have tried
41 // did not backfire on us:
42 guarantee(get_thread() == thread, "must be the same thread, quickly");
43 guarantee(get_thread_slow() == thread, "must be the same thread, slowly");
44 }
45
46 void ThreadLocalStorage::init() {
47 assert(!is_initialized(),
48 "More than one attempt to initialize threadLocalStorage");
49 pd_init();
50 set_thread_index(os::allocate_thread_local_storage());
51 generate_code_for_get_thread();
52 }
53
54 bool ThreadLocalStorage::is_initialized() {
55 return (thread_index() != -1);
56 }
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1 /*
2 * Copyright (c) 1997, 2015, 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 */
24
25 #include "precompiled.hpp"
26 #include "runtime/os.inline.hpp"
27 #include "runtime/thread.inline.hpp"
28 #include "runtime/threadLocalStorage.hpp"
29
30 // Solaris no longer has this kind of ThreadLocalStorage implementation.
31 // This will be removed from all platforms in the near future.
32
33 #ifndef SOLARIS
34
35 // static member initialization
36 int ThreadLocalStorage::_thread_index = -1;
37
38 Thread* ThreadLocalStorage::get_thread_slow() {
39 return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
40 }
41
42 void ThreadLocalStorage::set_thread(Thread* thread) {
43 pd_set_thread(thread);
44
45 // The following ensure that any optimization tricks we have tried
46 // did not backfire on us:
47 guarantee(get_thread() == thread, "must be the same thread, quickly");
48 guarantee(get_thread_slow() == thread, "must be the same thread, slowly");
49 }
50
51 void ThreadLocalStorage::init() {
52 assert(!is_initialized(),
53 "More than one attempt to initialize threadLocalStorage");
54 pd_init();
55 set_thread_index(os::allocate_thread_local_storage());
56 generate_code_for_get_thread();
57 }
58
59 bool ThreadLocalStorage::is_initialized() {
60 return (thread_index() != -1);
61 }
62
63 #endif // SOLARIS
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