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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 // Interface for thread local storage
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26
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27 // Fast variant of ThreadLocalStorage::get_thread_slow
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28 extern "C" Thread* get_thread();
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29
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30 // Get raw thread id: e.g., %g7 on sparc, fs or gs on x86
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31 extern "C" uintptr_t _raw_thread_id();
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32
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33 class ThreadLocalStorage : AllStatic {
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34 public:
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35 static void set_thread(Thread* thread);
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36 static Thread* get_thread_slow();
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37 static void invalidate_all() { pd_invalidate_all(); }
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38
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39 // Machine dependent stuff
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40 #include "incls/_threadLS_pd.hpp.incl"
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41
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42 public:
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43 // Accessor
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44 static inline int thread_index() { return _thread_index; }
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45 static inline void set_thread_index(int index) { _thread_index = index; }
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46
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47 // Initialization
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48 // Called explicitly from VMThread::activate_system instead of init_globals.
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49 static void init();
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50
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51 private:
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52 static int _thread_index;
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53
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54 static void generate_code_for_get_thread();
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55
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56 // Processor dependent parts of set_thread and initialization
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57 static void pd_set_thread(Thread* thread);
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58 static void pd_init();
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59 // Invalidate any thread cacheing or optimization schemes.
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60 static void pd_invalidate_all();
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61
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62 };
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