ssize_t CBitmap::_SetBit(size_t unBitPos,ssize_t iBitVal)
{
ssize_t iBitOldVal = 0;
for (ssize_t i=0; i<(ssize_t)m_pHeadInfo->m_unBitWords; i++)
{
ssize_t iMask = (ssize_t)pow(2,(double)i);
if(iBitVal & iMask)
{
if(0!=_SetBit(m_pBitMem[i],unBitPos))
iBitOldVal |= iMask;
}
else
{
if(0==_ClearBit(m_pBitMem[i],unBitPos))
iBitOldVal |= iMask;
}
}
//无改变
if (iBitOldVal == iBitVal)
{
return -2;
}
m_pHeadInfo->m_unValStat[iBitOldVal]--;
m_pHeadInfo->m_unValStat[iBitVal]++;
return 0;
}
ssize_t CBitmap::StartUp()
{
//非新建的共享内存,不用恢复
if (m_iInitType!=emInit)
{
return 0;
}
if (access(m_szDumpFile, F_OK) == 0)
{
//恢复core
ssize_t iRet = _CoreRecover();
if (iRet < 0)
{
printf("Recover from dumpfile(%s) failed, ret %lld.\n",m_szDumpFile,(long long)iRet);
return iRet;
}
printf("Recover from %d bytes from dumpfile.\n",iRet);
}
else
{
printf("no dumpfile to recover.\n");
}
ssize_t iOp = 0;
ssize_t iCount = 0;
ssize_t iLogLen = 0;
char m_szBuffer[1024];
u_int64_t tLogTime;
//恢复日志流水
m_stBinLog.ReadRecordStart();
while(0<(iLogLen = m_stBinLog.ReadRecordFromBinLog(m_szBuffer,sizeof(m_szBuffer),tLogTime)))
{
size_t unUin = 0;
ssize_t iBuffPos = 0;
memcpy(&iOp,m_szBuffer,sizeof(ssize_t));
iBuffPos += sizeof(ssize_t);
if (iOp == op_set)
{
memcpy(&unUin,m_szBuffer+iBuffPos,sizeof(ssize_t));
iBuffPos += sizeof(ssize_t);
ssize_t iVal = 0;
memcpy(&iVal,m_szBuffer+iBuffPos,sizeof(ssize_t));
iBuffPos += sizeof(ssize_t);
_SetBit(unUin,iVal);
}
iCount++;
}
printf("recover from binlog %lld records.\n",(long long)iCount);
return 0;
}
// public functions
int FastGpioOmega::SetDirection(int pinNum, int bOutput)
{
unsigned long int regVal;
// read the current input and output settings
regVal = _ReadReg(REGISTER_OE_OFFSET);
if (verbosityLevel > 0) printf("Direction setting read: 0x%08lx\n", regVal);
// set the OE for this pin
_SetBit(regVal, pinNum, bOutput);
if (verbosityLevel > 0) printf("Direction setting write: 0x%08lx\n", regVal);
// write the new register value
_WriteReg(REGISTER_OE_OFFSET, regVal);
return (EXIT_SUCCESS);
}
ssize_t CBitmap::SetBit(size_t unBitPos,ssize_t iBitVal)
{
size_t unBytePos = (ssize_t)(unBitPos/8.0f);
if (unBytePos >= m_unMapSize)
return -1;
if((iBitVal < 0) ||
(iBitVal >= (ssize_t)pow(2,(double)m_pHeadInfo->m_unBitWords)))
{
return -2;
}
if (0!=_SetBit(unBitPos,iBitVal))
{
return -3;
}
m_pHeadInfo->m_unDataFlag |= DF_DATA_DIRTY;
if (m_iBinLogOpen)
{
char m_szBuffer[1024];
ssize_t iOp = op_set;
ssize_t iBuffLen = 0;
memcpy(m_szBuffer,&iOp,sizeof(ssize_t));
iBuffLen += sizeof(ssize_t);
memcpy(m_szBuffer+iBuffLen,&unBitPos,sizeof(ssize_t));
iBuffLen += sizeof(ssize_t);
memcpy(m_szBuffer+iBuffLen,&iBitVal,sizeof(ssize_t));
iBuffLen += sizeof(ssize_t);
m_stBinLog.WriteToBinLog(m_szBuffer,iBuffLen);
}
return 0;
}
