#include?
#include?“CRingBuffer.h“

CRingBuffer::CRingBuffer（int?buffSize）{
	??m_writePos=0;
	??m_readPos=0;
	??m_dataLeng=0;//目前數據量
	??m_buffsize=buffSize;
	??m_pBuffer=（char*）malloc（buffSize+1）;
??????memset（m_pBuffer0buffSize+1）;
}

CRingBuffer::~CRingBuffer（）{
	
	??free（m_pBuffer）;
}

int?CRingBuffer::Remain（void）{

	return?m_buffsize-m_dataLeng;?//剩下多少字節
}

int?CRingBuffer::GetDataCount（void）{
??return?m_dataLeng;?//當前緩沖區有多少字節
}

int?CRingBuffer::PushData（char*?datint?len）{

	if（len<=0）?return?0;
???
	?if?（m_dataLeng+len>m_buffsize）///溢出
	?{
		?CString?str;
		?str.Format（“\n---RingBuffer?Over?Load?[%d]---“m_buffsize-m_dataLeng-len）;
		?TRACE（str）;
		?len=m_buffsize-m_dataLeng;
		//?AfxMessageBox（str）;
	?}


	if（m_writePos+len<=m_buffsize）{
	??memcpy（m_pBuffer+m_writePosdatlen）;
	??m_writePos+=len;
	??if（m_writePos>=m_buffsize）
		??m_writePos=0;//歸零
	}else{
		
		///超過一圈
		int?wr1Leng=m_buffsize-m_writePos;
		int?wr2Leng=m_writePos+len-m_buffsize-1;
		
		memcpy（m_pBuffer+m_writePosdatwr1Leng）;
		memcpy（m_pBufferdat+wr1Lengwr2Leng）;

		m_writePos=wr2Leng;

	}

	?m_dataLeng+=len;////增加數據
	???
??return?len;
}

int?CRingBuffer::PopData（char*?inBufint?len）{

	?int?readLen=len;//計算讀取了多少字節
	?if（m_dataLeng<1?||?len<0?）?return?0;?///沒有可讀取的數據
???????
	?if（len>m_dataLeng）{
????????readLen=m_dataLeng;
	?}


????if?（m_readPos+readLen????{
???????memcpy（inBufm_pBuffer+m_readPosreadLen）;
	???m_readPos+=readLen;
	???m_dataLeng-=readLen;
	???return?readLen;
	}


?????int?rd1Leng=m_buffsize-m_readPos;
	?int?rd2Leng=readLen-rd1Leng;


	?memcpy（inBufm_pBuffer+m_readPosrd1Leng）;

?????memcpy（inBuf+rd1Lengm_pBufferrd2Leng）;
	?m_readPos=rd2Leng;
	?m_dataLeng-=readLen;

	?return?readLen;?
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-03-24?16:59??UART_Debug\
?????文件????????1885??2016-03-24?14:46??UART_Debug\CRingBuffer.cpp
?????文件?????????424??2016-03-24?14:46??UART_Debug\CRingBuffer.h
?????文件????????3651??2016-03-19?17:20??UART_Debug\ReadMe.txt
?????目錄???????????0??2016-03-24?08:48??UART_Debug\res\
?????文件????????1102??2016-03-24?16:36??UART_Debug\resource.h
?????文件????????1078??2016-03-24?08:48??UART_Debug\res\UART_Debug.ico
?????文件?????????402??2016-03-19?17:20??UART_Debug\res\UART_Debug.rc2
?????文件????????9161??2016-03-24?14:47??UART_Debug\SerialPort.cpp
?????文件????????1651??2016-03-24?14:48??UART_Debug\SerialPort.h
?????文件?????????212??2016-03-19?17:20??UART_Debug\StdAfx.cpp
?????文件????????1054??2016-03-19?17:20??UART_Debug\StdAfx.h
?????文件???????36232??2016-03-24?16:41??UART_Debug\UART_Debug.aps
?????文件????????1624??2016-03-24?16:58??UART_Debug\UART_Debug.clw
?????文件????????2119??2016-03-19?17:20??UART_Debug\UART_Debug.cpp
?????文件????????4498??2016-03-22?16:05??UART_Debug\UART_Debug.dsp
?????文件?????????543??2016-03-19?17:20??UART_Debug\UART_Debug.dsw
?????文件???????28672??2016-03-24?16:58??UART_Debug\UART_Debug.exe
?????文件????????1368??2016-03-19?17:20??UART_Debug\UART_Debug.h
?????文件???????74752??2016-03-24?16:59??UART_Debug\UART_Debug.ncb
?????文件???????48640??2016-03-24?16:59??UART_Debug\UART_Debug.opt
?????文件????????2056??2016-03-24?16:58??UART_Debug\UART_Debug.plg
?????文件????????6053??2016-03-24?16:41??UART_Debug\UART_Debug.rc
?????文件???????10914??2016-03-24?16:55??UART_Debug\UART_DebugDlg.cpp
?????文件????????1667??2016-03-24?16:53??UART_Debug\UART_DebugDlg.h