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/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "runtime/thread.inline.hpp"
#include "runtime/threadLocalStorage.hpp"
#ifdef TARGET_OS_FAMILY_linux
# include "os_linux.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_solaris
# include "os_solaris.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_windows
# include "os_windows.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_bsd
# include "os_bsd.inline.hpp"
#endif
// 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(!is_initialized(),
"More than one attempt to initialize threadLocalStorage");
pd_init();
set_thread_index(os::allocate_thread_local_storage());
generate_code_for_get_thread();
}
bool ThreadLocalStorage::is_initialized() {
return (thread_index() != -1);
}
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