Mercurial > hg > truffle
diff src/share/vm/runtime/threadLocalStorage.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | d95b224e9f17 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/runtime/threadLocalStorage.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,49 @@ +/* + * Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +# include "incls/_precompiled.incl" +# include "incls/_threadLocalStorage.cpp.incl" + +// static member initialization +int ThreadLocalStorage::_thread_index = -1; + +Thread* ThreadLocalStorage::get_thread_slow() { + return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index()); +} + +void ThreadLocalStorage::set_thread(Thread* thread) { + pd_set_thread(thread); + + // The following ensure that any optimization tricks we have tried + // did not backfire on us: + guarantee(get_thread() == thread, "must be the same thread, quickly"); + guarantee(get_thread_slow() == thread, "must be the same thread, slowly"); +} + +void ThreadLocalStorage::init() { + assert(ThreadLocalStorage::thread_index() == -1, "More than one attempt to initialize threadLocalStorage"); + pd_init(); + set_thread_index(os::allocate_thread_local_storage()); + generate_code_for_get_thread(); +}