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1 /*
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2 * Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_threadLocalStorage.cpp.incl"
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27
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28 // static member initialization
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29 int ThreadLocalStorage::_thread_index = -1;
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30
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31 Thread* ThreadLocalStorage::get_thread_slow() {
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32 return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
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33 }
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34
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35 void ThreadLocalStorage::set_thread(Thread* thread) {
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36 pd_set_thread(thread);
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37
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38 // The following ensure that any optimization tricks we have tried
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39 // did not backfire on us:
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40 guarantee(get_thread() == thread, "must be the same thread, quickly");
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41 guarantee(get_thread_slow() == thread, "must be the same thread, slowly");
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42 }
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43
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44 void ThreadLocalStorage::init() {
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45 assert(ThreadLocalStorage::thread_index() == -1, "More than one attempt to initialize threadLocalStorage");
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46 pd_init();
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47 set_thread_index(os::allocate_thread_local_storage());
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48 generate_code_for_get_thread();
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49 }
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