1 /* 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP 26 #define SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP 27 28 #include "gc_implementation/shared/gcUtil.hpp" 29 #include "runtime/os.hpp" 30 #include "utilities/top.hpp" 31 32 // Interface for thread local storage 33 34 // Fast variant of ThreadLocalStorage::get_thread_slow 35 extern "C" Thread* get_thread(); 36 37 // Get raw thread id: e.g., %g7 on sparc, fs or gs on x86 38 extern "C" uintptr_t _raw_thread_id(); 39 40 class ThreadLocalStorage : AllStatic { 41 public: 42 static void set_thread(Thread* thread); 43 static Thread* get_thread_slow(); 44 static void invalidate_all() { pd_invalidate_all(); } 45 46 // Machine dependent stuff 47 #ifdef TARGET_OS_ARCH_linux_x86 48 # include "threadLS_linux_x86.hpp" 49 #endif 50 #ifdef TARGET_OS_ARCH_linux_sparc 51 # include "threadLS_linux_sparc.hpp" 52 #endif 53 #ifdef TARGET_OS_ARCH_linux_zero 54 # include "threadLS_linux_zero.hpp" 55 #endif 56 #ifdef TARGET_OS_ARCH_solaris_x86 57 # include "threadLS_solaris_x86.hpp" 58 #endif 59 #ifdef TARGET_OS_ARCH_solaris_sparc 60 # include "threadLS_solaris_sparc.hpp" 61 #endif 62 #ifdef TARGET_OS_ARCH_windows_x86 63 # include "threadLS_windows_x86.hpp" 64 #endif 65 #ifdef TARGET_OS_ARCH_linux_arm 66 # include "threadLS_linux_arm.hpp" 67 #endif 68 #ifdef TARGET_OS_ARCH_linux_ppc 69 # include "threadLS_linux_ppc.hpp" 70 #endif 71 72 73 public: 74 // Accessor 75 static inline int thread_index() { return _thread_index; } 76 static inline void set_thread_index(int index) { _thread_index = index; } 77 78 // Initialization 79 // Called explicitly from VMThread::activate_system instead of init_globals. 80 static void init(); 81 static bool is_initialized(); 82 83 private: 84 static int _thread_index; 85 86 static void generate_code_for_get_thread(); 87 88 // Processor dependent parts of set_thread and initialization 89 static void pd_set_thread(Thread* thread); 90 static void pd_init(); 91 // Invalidate any thread cacheing or optimization schemes. 92 static void pd_invalidate_all(); 93 94 }; 95 96 #endif // SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP