X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_utilities/lib/bufferfifo.h?ds=sidebyside

diff --git a/libsecurity_utilities/lib/bufferfifo.h b/libsecurity_utilities/lib/bufferfifo.h
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--- a/libsecurity_utilities/lib/bufferfifo.h
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-/*
- * Copyright (c) 2000-2002,2004 Apple Computer, Inc. All Rights Reserved.
- * 
- * @APPLE_LICENSE_HEADER_START@
- * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-
-
-//
-// bufferfifo - a Sink that queues data in a FIFO of buffers for retrieval
-//
-#ifndef _H_BUFFERFIFO
-#define _H_BUFFERFIFO
-
-#include "streams.h"
-#include "buffers.h"
-#include <list>
-#include <queue>
-
-
-namespace Security {
-
-
-//
-// A BufferFifo acts as a First-in First-out queue of Buffer objects.
-// This is usually used as a flexible I/O buffer queue mechanism.
-// For convenience, a BufferFifo is a Sink, so you can push data
-// into it directly using the Sink mechanism.
-// Note that there is currently no mechanism for restricting the
-// memory footprint of a BufferFifo.
-//
-class BufferFifo : public Sink {
-public:
-    BufferFifo(size_t es = 4096) : bufferLength(es) { }
-    ~BufferFifo();
-    
-    Buffer *top() const			{ assert(!mBuffers.empty()); return mBuffers.front(); }
-    Buffer *pop();
-    void push(Buffer *b)		{ mBuffers.push(b); }
-    
-    bool isEmpty() const		{ return mBuffers.empty(); }
-    size_t size() const			{ return mBuffers.size(); }
-    size_t topLength() const	{ assert(!isEmpty()); return mBuffers.front()->length(); }
-    
-    // Sink implementation
-    void consume(const void *data, size_t size);
-    void clearBuffer();
-
-private:
-    typedef queue< Buffer *, list<Buffer *> > BufferQueue;
-    BufferQueue mBuffers;
-    const size_t bufferLength;
-};
-
-
-
-}	// end namespace Security
-
-
-#endif /* _H_BUFFERFIFO */