зеркало из https://github.com/mozilla/gecko-dev.git
106 строки
4.0 KiB
C++
106 строки
4.0 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsStreamUtils_h__
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#define nsStreamUtils_h__
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#include "nscore.h"
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class nsIAsyncInputStream;
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class nsIAsyncOutputStream;
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class nsIInputStreamNotify;
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class nsIOutputStreamNotify;
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class nsIEventQueue;
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class nsIMemory;
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/**
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* A "one-shot" proxy of the OnInputStreamReady callback. The resulting
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* proxy object's OnInputStreamReady function may only be called once! The
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* proxy object ensures that the real notify object will be free'd on the
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* thread owning the given event queue regardless of what thread the proxy
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* object is destroyed on.
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*
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* This function is designed to be used to implement AsyncWait when the
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* aEventQ parameter is non-null.
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*/
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extern NS_COM nsresult
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NS_NewInputStreamReadyEvent(nsIInputStreamNotify **aEvent,
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nsIInputStreamNotify *aNotify,
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nsIEventQueue *aEventQ);
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/**
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* A "one-shot" proxy of the OnOutputStreamReady callback. The resulting
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* proxy object's OnOutputStreamReady function may only be called once! The
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* proxy object ensures that the real notify object will be free'd on the
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* thread owning the given event queue regardless of what thread the proxy
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* object is destroyed on.
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*
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* This function is designed to be used to implement AsyncWait when the
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* aEventQ parameter is non-null.
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*/
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extern NS_COM nsresult
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NS_NewOutputStreamReadyEvent(nsIOutputStreamNotify **aEvent,
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nsIOutputStreamNotify *aNotify,
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nsIEventQueue *aEventQ);
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/**
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* Asynchronously copy data from an input stream to an output stream.
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*
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* @param aSource
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* the source input stream containing the data to copy.
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* @param aSink
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* the data is copied to this output stream.
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* @param aChunkSize
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* read/write at most this many bytes at one time.
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* @param aBufferedSource
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* true if source implements ReadSegments.
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* @param aBufferedSink
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* true if sink implements WriteSegments.
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*
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* NOTE: the implementation does not rely on any event queues.
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*/
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extern NS_COM nsresult
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NS_AsyncCopy(nsIAsyncInputStream *aSource,
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nsIAsyncOutputStream *aSink,
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PRBool aBufferedSource = PR_TRUE,
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PRBool aBufferedSink = PR_TRUE,
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PRUint32 aSegmentSize = 4096,
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PRUint32 aSegmentCount = 1,
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nsIMemory *aSegmentAlloc = nsnull);
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#endif // !nsStreamUtils_h__
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