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-rw-r--r--netwerk/socket/nsNamedPipeService.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/netwerk/socket/nsNamedPipeService.h b/netwerk/socket/nsNamedPipeService.h
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+++ b/netwerk/socket/nsNamedPipeService.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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_netwerk_socket_nsNamedPipeService_h
+#define mozilla_netwerk_socket_nsNamedPipeService_h
+
+#include <windows.h>
+#include "mozilla/Atomics.h"
+#include "mozilla/Mutex.h"
+#include "nsINamedPipeService.h"
+#include "nsIObserver.h"
+#include "nsIRunnable.h"
+#include "nsIThread.h"
+#include "nsTArray.h"
+#include "mozilla/StaticPtr.h"
+
+namespace mozilla {
+namespace net {
+
+class NamedPipeService final : public nsINamedPipeService,
+ public nsIObserver,
+ public nsIRunnable {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSINAMEDPIPESERVICE
+ NS_DECL_NSIOBSERVER
+ NS_DECL_NSIRUNNABLE
+
+ static already_AddRefed<nsINamedPipeService> GetOrCreate();
+
+ private:
+ explicit NamedPipeService();
+ virtual ~NamedPipeService() = default;
+
+ nsresult Init();
+
+ void Shutdown();
+ void RemoveRetiredObjects();
+
+ HANDLE mIocp; // native handle to the I/O completion port.
+ Atomic<bool>
+ mIsShutdown; // set to true to stop the event loop running by mThread.
+ nsCOMPtr<nsIThread> mThread; // worker thread to get I/O events.
+
+ /**
+ * The observers is maintained in |mObservers| to ensure valid life-cycle.
+ * We don't remove the handle and corresponding observer directly, instead
+ * the handle and observer into a "retired" list and close/remove them in
+ * the worker thread to avoid a race condition that might happen between
+ * |CloseHandle()| and |GetQueuedCompletionStatus()|.
+ */
+ Mutex mLock MOZ_UNANNOTATED;
+ nsTArray<nsCOMPtr<nsINamedPipeDataObserver>>
+ mObservers; // protected by mLock
+ nsTArray<nsCOMPtr<nsINamedPipeDataObserver>>
+ mRetiredObservers; // protected by mLock
+ nsTArray<HANDLE> mRetiredHandles; // protected by mLock
+
+ static StaticRefPtr<NamedPipeService> gSingleton;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif // mozilla_netwerk_socket_nsNamedPipeService_h