1 /* 2 * Copyright (c) 1998, 2010, 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 #include "precompiled.hpp" 26 #include "runtime/thread.inline.hpp" 27 #include "runtime/threadLocalStorage.hpp" 28 29 // Provides an entry point we can link against and 30 // a buffer we can emit code into. The buffer is 31 // filled by ThreadLocalStorage::generate_code_for_get_thread 32 // and called from ThreadLocalStorage::thread() 33 34 int ThreadLocalStorage::_thread_ptr_offset = 0; 35 36 static void call_wrapper_dummy() {} 37 38 // We need to call the os_exception_wrapper once so that it sets 39 // up the offset from FS of the thread pointer. 40 void ThreadLocalStorage::generate_code_for_get_thread() { 41 os::os_exception_wrapper( (java_call_t)call_wrapper_dummy, 42 NULL, NULL, NULL, NULL); 43 } 44 45 void ThreadLocalStorage::pd_init() { } 46 47 void ThreadLocalStorage::pd_set_thread(Thread* thread) { 48 os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread); 49 }