duke@435: /*
duke@435:  * Copyright 1997-2003 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: # include "incls/_precompiled.incl"
duke@435: # include "incls/_threadLocalStorage.cpp.incl"
duke@435: 
duke@435: // static member initialization
duke@435: int ThreadLocalStorage::_thread_index = -1;
duke@435: 
duke@435: Thread* ThreadLocalStorage::get_thread_slow() {
duke@435:   return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
duke@435: }
duke@435: 
duke@435: void ThreadLocalStorage::set_thread(Thread* thread) {
duke@435:   pd_set_thread(thread);
duke@435: 
duke@435:   // The following ensure that any optimization tricks we have tried
duke@435:   // did not backfire on us:
duke@435:   guarantee(get_thread()      == thread, "must be the same thread, quickly");
duke@435:   guarantee(get_thread_slow() == thread, "must be the same thread, slowly");
duke@435: }
duke@435: 
duke@435: void ThreadLocalStorage::init() {
duke@435:   assert(ThreadLocalStorage::thread_index() == -1, "More than one attempt to initialize threadLocalStorage");
duke@435:   pd_init();
duke@435:   set_thread_index(os::allocate_thread_local_storage());
duke@435:   generate_code_for_get_thread();
duke@435: }