--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/z/zThread.hpp Tue Jun 12 17:40:28 2018 +0200
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2015, 2017, 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_GC_Z_ZTHREAD_HPP
+#define SHARE_GC_Z_ZTHREAD_HPP
+
+#include "memory/allocation.hpp"
+#include "utilities/debug.hpp"
+
+class ZThread : public AllStatic {
+ friend class ZTask;
+
+private:
+ static __thread bool _initialized;
+ static __thread uintptr_t _id;
+ static __thread bool _is_vm;
+ static __thread bool _is_java;
+ static __thread bool _is_worker;
+ static __thread uint _worker_id;
+
+ static void initialize();
+
+ static void ensure_initialized() {
+ if (!_initialized) {
+ initialize();
+ }
+ }
+
+ static bool has_worker_id();
+ static void set_worker_id(uint worker_id);
+ static void clear_worker_id();
+
+public:
+ static const char* name();
+
+ static uintptr_t id() {
+ ensure_initialized();
+ return _id;
+ }
+
+ static bool is_vm() {
+ ensure_initialized();
+ return _is_vm;
+ }
+
+ static bool is_java() {
+ ensure_initialized();
+ return _is_java;
+ }
+
+ static bool is_worker() {
+ ensure_initialized();
+ return _is_worker;
+ }
+
+ static uint worker_id() {
+ assert(has_worker_id(), "Worker id not initialized");
+ return _worker_id;
+ }
+};
+
+#endif // SHARE_GC_Z_ZTHREAD_HPP