/* * Copyright (c) 1997, 2022, 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. *
*/
// forward-decl as we can't have an include cycle class Thread;
// Wrapper class for library-based (as opposed to compiler-based) // thread-local storage (TLS). All platforms require this for // signal-handler based TLS access (which while not strictly async-signal // safe in theory, is and has-been for a long time, in practice). // Platforms without compiler-based TLS (i.e. __thread storage-class modifier) // will use this implementation for all TLS access - see thread.hpp/cpp
class ThreadLocalStorage : AllStatic {
// Exported API public: static Thread* thread(); // return current thread, if attached staticvoid set_thread(Thread* thread); // set current thread staticvoid init(); staticbool is_initialized(); // can't use TLS prior to initialization
};
#endif// SHARE_RUNTIME_THREADLOCALSTORAGE_HPP
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