1 files changed, 44 insertions, 0 deletions
diff --git a/netwerk/cache/nsCacheUtils.h b/netwerk/cache/nsCacheUtils.h
new file mode 100644
index 0000000000..e9ecb3d6c7
--- /dev/null
+++ b/netwerk/cache/nsCacheUtils.h
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et 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 _nsCacheUtils_h_
+#define _nsCacheUtils_h_
+
+#include "nsThreadUtils.h"
+#include "nsCOMPtr.h"
+#include "mozilla/Monitor.h"
+
+class nsIThread;
+
+/**
+ * A class with utility methods for shutting down nsIThreads easily.
+ */
+class nsShutdownThread : public mozilla::Runnable {
+ public:
+  explicit nsShutdownThread(nsIThread* aThread);
+  ~nsShutdownThread() = default;
+
+  NS_IMETHOD Run() override;
+
+  /**
+   * Shutdown ensures that aThread->Shutdown() is called on a main thread
+   */
+  static nsresult Shutdown(nsIThread* aThread);
+
+  /**
+   * BlockingShutdown ensures that by the time it returns, aThread->Shutdown()
+   * has been called and no pending events have been processed on the current
+   * thread.
+   */
+  static nsresult BlockingShutdown(nsIThread* aThread);
+
+ private:
+  mozilla::Monitor mMonitor MOZ_UNANNOTATED;
+  bool mShuttingDown;
+  nsCOMPtr<nsIThread> mThread;
+};
+
+#endif