Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/threadLocalStorage.cpp
src/share/vm/runtime/threadLocalStorage.cpp
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| 1 /* | |
| 2 * Copyright (c) 1997, 2010, 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/thread.inline.hpp" | |
| 27 #include "runtime/threadLocalStorage.hpp" | |
| 28 #ifdef TARGET_OS_FAMILY_linux | |
| 29 # include "os_linux.inline.hpp" | |
| 30 #endif | |
| 31 #ifdef TARGET_OS_FAMILY_solaris | |
| 32 # include "os_solaris.inline.hpp" | |
| 33 #endif | |
| 34 #ifdef TARGET_OS_FAMILY_windows | |
| 35 # include "os_windows.inline.hpp" | |
| 36 #endif | |
| 37 #ifdef TARGET_OS_FAMILY_bsd | |
| 38 # include "os_bsd.inline.hpp" | |
| 39 #endif | |
| 40 | |
| 41 // static member initialization | |
| 42 int ThreadLocalStorage::_thread_index = -1; | |
| 43 | |
| 44 Thread* ThreadLocalStorage::get_thread_slow() { | |
| 45 return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index()); | |
| 46 } | |
| 47 | |
| 48 void ThreadLocalStorage::set_thread(Thread* thread) { | |
| 49 pd_set_thread(thread); | |
| 50 | |
| 51 // The following ensure that any optimization tricks we have tried | |
| 52 // did not backfire on us: | |
| 53 guarantee(get_thread() == thread, "must be the same thread, quickly"); | |
| 54 guarantee(get_thread_slow() == thread, "must be the same thread, slowly"); | |
| 55 } | |
| 56 | |
| 57 void ThreadLocalStorage::init() { | |
| 58 assert(!is_initialized(), | |
| 59 "More than one attempt to initialize threadLocalStorage"); | |
| 60 pd_init(); | |
| 61 set_thread_index(os::allocate_thread_local_storage()); | |
| 62 generate_code_for_get_thread(); | |
| 63 } | |
| 64 | |
| 65 bool ThreadLocalStorage::is_initialized() { | |
| 66 return (thread_index() != -1); | |
| 67 } |
