1 files changed, 52 insertions, 0 deletions
diff --git a/dom/plugins/ipc/FunctionBrokerThread.h b/dom/plugins/ipc/FunctionBrokerThread.h
new file mode 100644
index 0000000000..f5fe66e9ef
--- /dev/null
+++ b/dom/plugins/ipc/FunctionBrokerThread.h
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=4 et :
+ * 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 mozilla_plugins_functionbrokerthread_h
+#define mozilla_plugins_functionbrokerthread_h
+
+#include "nsThreadManager.h"
+
+namespace mozilla {
+namespace plugins {
+
+class FunctionBrokerThread {
+ public:
+  void Dispatch(already_AddRefed<nsIRunnable>&& aRunnable) {
+    mThread->Dispatch(std::move(aRunnable), nsIEventTarget::NS_DISPATCH_NORMAL);
+  }
+
+  bool IsOnThread() {
+    bool on;
+    return NS_SUCCEEDED(mThread->IsOnCurrentThread(&on)) && on;
+  }
+
+  static FunctionBrokerThread* Create() {
+    MOZ_RELEASE_ASSERT(NS_IsMainThread());
+    nsCOMPtr<nsIThread> thread;
+    if (NS_FAILED(
+            NS_NewNamedThread("Function Broker", getter_AddRefs(thread)))) {
+      return nullptr;
+    }
+    return new FunctionBrokerThread(thread);
+  }
+
+  ~FunctionBrokerThread() {
+    MOZ_RELEASE_ASSERT(NS_IsMainThread());
+    mThread->Shutdown();
+  }
+
+ private:
+  explicit FunctionBrokerThread(nsIThread* aThread) : mThread(aThread) {
+    MOZ_ASSERT(mThread);
+  }
+
+  nsCOMPtr<nsIThread> mThread;
+};
+
+}  // namespace plugins
+}  // namespace mozilla
+
+#endif  // mozilla_plugins_functionbrokerthread_h