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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.
 */
[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
 */
[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();
};