ThreadSafeBuffer.hxx
上传用户:sy_wanhua
上传日期:2013-07-25
资源大小:3048k
文件大小:3k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
C/C++
- #ifndef THREADSAFEBUFFER_HXX_
- #define THREADSAFEBUFFER_HXX_
- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const ThreadSafeBuffer_hxx_Version =
- "$Id: ThreadSafeBuffer.hxx,v 1.2 2001/05/15 19:38:01 icahoon Exp $";
- #include "Lock.hxx"
- #include "VMutex.h"
- class ThreadSafeBuffer
- {
- public:
- ThreadSafeBuffer();
- ~ThreadSafeBuffer();
- const char* c_str(const char* buf, int length);
- const char* get_c_str() const;
- private:
- VMutex myMutex;
- char* myData;
- };
- inline
- ThreadSafeBuffer::ThreadSafeBuffer()
- : myMutex(),
- myData(0)
- {
- }
- inline
- ThreadSafeBuffer::~ThreadSafeBuffer()
- {
- if(myData)
- {
- delete[] myData;
- }
- }
- inline
- const char*
- ThreadSafeBuffer::c_str(const char* buf, int length)
- {
- Vocal::Threads::Lock x(myMutex);
- if(myData)
- {
- delete[] myData;
- }
- myData = new char[length + 1];
- memcpy(myData, buf, length);
- myData[length] = ' ';
- return myData;
- }
- inline
- const char*
- ThreadSafeBuffer::get_c_str() const
- {
- return myData;
- }
- /* Local Variables: */
- /* c-file-style: "stroustrup" */
- /* indent-tabs-mode: nil */
- /* c-file-offsets: ((access-label . -) (inclass . ++)) */
- /* c-basic-offset: 4 */
- /* End: */
- #endif