1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/threading/ThreadId.h b/js/src/threading/ThreadId.h
new file mode 100644
index 0000000000..1063d355f2
--- /dev/null
+++ b/js/src/threading/ThreadId.h
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef threading_ThreadId_h
+#define threading_ThreadId_h
+
+namespace js {
+
+class ThreadId {
+  class PlatformData;
+  void* platformData_[2];
+
+ public:
+  ThreadId();
+
+  ThreadId(const ThreadId&) = default;
+  ThreadId(ThreadId&&) = default;
+  ThreadId& operator=(const ThreadId&) = default;
+  ThreadId& operator=(ThreadId&&) = default;
+
+  bool operator==(const ThreadId& aOther) const;
+  bool operator!=(const ThreadId& aOther) const { return !operator==(aOther); }
+
+  MOZ_IMPLICIT operator bool() const;
+
+  inline PlatformData* platformData();
+  inline const PlatformData* platformData() const;
+
+  // Return the thread id of the calling thread.
+  static ThreadId ThisThreadId();
+};
+
+}  // namespace js
+
+#endif  // threading_ThreadId_h