/* * Copyright ( c ) 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 . * #ifndef SHARE_RUNTIME_THREADIDENTIFIER_HPP#define SHARE_RUNTIME_THREADIDENTIFIER_HPP#include "memory/allStatic.hpp" /* * Provides unique monotonic identifiers for threads . * * Java uses unsafe to initialize the tid field for Thread and VirtualThread on construction . * JFR uses next ( ) for a non - reusable id for non - java threads . class ThreadIdentifier : AllStatic {public :static int64_t next();static int64_t unsafe_offset();#endif // SHARE_RUNTIME_THREADIDENTIFIER_HPP
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