aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "runtime/thread.inline.hpp"
aoqi@0: #include "runtime/threadLocalStorage.hpp"
aoqi@0: #ifdef TARGET_OS_FAMILY_linux
aoqi@0: # include "os_linux.inline.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_OS_FAMILY_solaris
aoqi@0: # include "os_solaris.inline.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_OS_FAMILY_windows
aoqi@0: # include "os_windows.inline.hpp"
aoqi@0: #endif
aoqi@0: #ifdef TARGET_OS_FAMILY_bsd
aoqi@0: # include "os_bsd.inline.hpp"
aoqi@0: #endif
aoqi@0: 
aoqi@0: // static member initialization
aoqi@0: int ThreadLocalStorage::_thread_index = -1;
aoqi@0: 
aoqi@0: Thread* ThreadLocalStorage::get_thread_slow() {
aoqi@0:   return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
aoqi@0: }
aoqi@0: 
aoqi@0: void ThreadLocalStorage::set_thread(Thread* thread) {
aoqi@0:   pd_set_thread(thread);
aoqi@0: 
aoqi@0:   // The following ensure that any optimization tricks we have tried
aoqi@0:   // did not backfire on us:
aoqi@0:   guarantee(get_thread()      == thread, "must be the same thread, quickly");
aoqi@0:   guarantee(get_thread_slow() == thread, "must be the same thread, slowly");
aoqi@0: }
aoqi@0: 
aoqi@0: void ThreadLocalStorage::init() {
aoqi@0:   assert(!is_initialized(),
aoqi@0:          "More than one attempt to initialize threadLocalStorage");
aoqi@0:   pd_init();
aoqi@0:   set_thread_index(os::allocate_thread_local_storage());
aoqi@0:   generate_code_for_get_thread();
aoqi@0: }
aoqi@0: 
aoqi@0: bool ThreadLocalStorage::is_initialized() {
aoqi@0:     return (thread_index() != -1);
aoqi@0: }