1 files changed, 48 insertions, 0 deletions
diff --git a/xpcom/threads/MainThreadUtils.h b/xpcom/threads/MainThreadUtils.h
new file mode 100644
index 0000000000..aac81e88b2
--- /dev/null
+++ b/xpcom/threads/MainThreadUtils.h
@@ -0,0 +1,48 @@
+/* -*- 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 MainThreadUtils_h_
+#define MainThreadUtils_h_
+
+#include "nscore.h"
+
+class nsIThread;
+
+/**
+ * Get a reference to the main thread.
+ *
+ * @param aResult
+ *   The resulting nsIThread object.
+ */
+extern nsresult NS_GetMainThread(nsIThread** aResult);
+
+#ifdef MOZILLA_INTERNAL_API
+// Fast access to the current thread.  Do not release the returned pointer!  If
+// you want to use this pointer from some other thread, then you will need to
+// AddRef it.  Otherwise, you should only consider this pointer valid from code
+// running on the current thread.
+extern nsIThread* NS_GetCurrentThread();
+#endif
+
+#ifdef MOZILLA_INTERNAL_API
+bool NS_IsMainThreadTLSInitialized();
+extern "C" {
+bool NS_IsMainThread();
+}
+
+namespace mozilla {
+
+#  ifdef DEBUG
+void AssertIsOnMainThread();
+#  else
+inline void AssertIsOnMainThread() {}
+#  endif
+
+}  // namespace mozilla
+
+#endif
+
+#endif  // MainThreadUtils_h_