import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/crypto/WebCryptoThreadPool.h

@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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_dom_WebCryptoThreadPool_h
+#define mozilla_dom_WebCryptoThreadPool_h
+
+#include "nsIObserverService.h"
+#include "nsIThreadPool.h"
+
+namespace mozilla {
+namespace dom {
+
+class WebCryptoThreadPool final : nsIObserver {
+public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+
+  static void
+  Initialize();
+
+  static nsresult
+  Dispatch(nsIRunnable* aRunnable);
+
+private:
+  WebCryptoThreadPool()
+    : mMutex("WebCryptoThreadPool::mMutex")
+    , mPool(nullptr)
+  { }
+  virtual ~WebCryptoThreadPool()
+  { }
+
+  nsresult
+  Init();
+
+  nsresult
+  DispatchInternal(nsIRunnable* aRunnable);
+
+  void
+  Shutdown();
+
+  NS_IMETHOD Observe(nsISupports* aSubject,
+                     const char* aTopic,
+                     const char16_t* aData) override;
+
+  mozilla::Mutex mMutex;
+  nsCOMPtr<nsIThreadPool> mPool;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_WebCryptoThreadPool_h