| /* | |
| * Copyright (c) 2022, 2024, 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 current(); | |
| static int64_t unsafe_offset(); | |
| static int64_t initial(); | |
| static void verify_id(int64_t id) NOT_DEBUG_RETURN; | |
| }; | |
| #endif // SHARE_RUNTIME_THREADIDENTIFIER_HPP |