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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#include "nsISupports.idl"
+#include "nsrootidl.idl"
+
+/**
+ * nsINamedPipeDataObserver
+ *
+ * This is the callback interface for nsINamedPipeService.
+ * The functions are called by the internal thread in the nsINamedPipeService.
+ */
+[scriptable, uuid(de4f460b-94fd-442c-9002-1637beb2185a)]
+interface nsINamedPipeDataObserver : nsISupports
+{
+ /**
+ * onDataAvailable
+ *
+ * @param aBytesTransferred
+ * Transfered bytes during last transmission.
+ * @param aOverlapped
+ * Corresponding overlapped structure used by the async I/O
+ */
+ void onDataAvailable(in unsigned long aBytesTransferred,
+ in voidPtr aOverlapped);
+
+ /**
+ * onError
+ *
+ * @param aError
+ * Error code of the error.
+ * @param aOverlapped
+ * Corresponding overlapped structure used by the async I/O
+ */
+ void onError(in unsigned long aError,
+ in voidPtr aOverlapped);
+};
+
+/**
+ * nsINamedPipeService
+ */
+[scriptable, uuid(1bf19133-5625-4ac8-836a-80b1c215f72b)]
+interface nsINamedPipeService : nsISupports
+{
+ /**
+ * addDataObserver
+ *
+ * @param aHandle
+ * The handle that is going to be monitored for read/write operations.
+ * Only handles that are opened with overlapped IO are supported.
+ * @param aObserver
+ * The observer of the handle, the service strong-refs of the observer.
+ */
+ void addDataObserver(in voidPtr aHandle,
+ in nsINamedPipeDataObserver aObserver);
+
+ /**
+ * removeDataObserver
+ *
+ * @param aHandle
+ The handle associated to the observer, and will be closed by the
+ service.
+ * @param aObserver
+ * The observer to be removed.
+ */
+ void removeDataObserver(in voidPtr aHandle,
+ in nsINamedPipeDataObserver aObserver);
+
+ /**
+ * isOnCurrentThread
+ *
+ * @return the caller runs within the internal thread.
+ */
+ boolean isOnCurrentThread();
+};