hotspot/src/share/vm/runtime/threadLocalStorage.cpp
author duke
Sat, 01 Dec 2007 00:00:00 +0000
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child 950 6112b627bb36
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/*
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 * Copyright 1997-2003 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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# include "incls/_precompiled.incl"
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# include "incls/_threadLocalStorage.cpp.incl"
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// static member initialization
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int ThreadLocalStorage::_thread_index = -1;
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Thread* ThreadLocalStorage::get_thread_slow() {
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  return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
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}
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void ThreadLocalStorage::set_thread(Thread* thread) {
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  pd_set_thread(thread);
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  // The following ensure that any optimization tricks we have tried
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  // did not backfire on us:
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  guarantee(get_thread()      == thread, "must be the same thread, quickly");
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  guarantee(get_thread_slow() == thread, "must be the same thread, slowly");
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}
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void ThreadLocalStorage::init() {
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  assert(ThreadLocalStorage::thread_index() == -1, "More than one attempt to initialize threadLocalStorage");
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  pd_init();
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  set_thread_index(os::allocate_thread_local_storage());
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  generate_code_for_get_thread();
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}