static char bufferRemove(CircularBuffer* buf)
{
if (bufferIsEmpty(buf)) return '\0';
char carattere = buf->content[buf->start];
buf->start = (buf->start + 1) % BUFFER_LENGTH;
return carattere;
}
void writeContentOnBaseChannel(CircularBuffer* buf, BaseChannel* bc)
{
chMtxLock(&(buf->mutex));
while (!bufferIsEmpty(buf))
{
chprintf(bc, "%c", bufferRemove(buf));
}
chMtxUnlock();
}
static inline uint8_t bufferGet()
{
uint8_t retVal = 0;
if (!bufferIsEmpty())
{
retVal = sBuffer[sReadPosition++ % RNG_BUFFER_SIZE];
}
return retVal;
}
void WriteThread::internalEndOfFile()
{
if(!bufferIsEmpty())
{
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,"["+std::to_string(id)+"] start the write");
emit internalStartWrite();
}
else
{
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,"["+std::to_string(id)+"] writeIsStopped");
flushBuffer();
emit writeIsStopped();
}
}
/**bufferGet
* Get packet pkt from bufferpacket bp.
* \param pkt : Packet to accept pop
* \param bp : buffer to pop packet from
* \return 0 if OK 1 if empty.
*/
uint8_t bufferGet(bufferpacket *bp, char *pkt)
{
int i;
char *p;
char *q;
if (bufferIsEmpty(bp)) return 1; // Nothing to get? Return 1
p=bp->pkt+bp->tail*PACKETSIZE; // Source
q=pkt; // Destination
// Fetch the packet
for (i=0;i<PACKETSIZE;i++)
*q++=*p++;
// Step the tail pointer
bp->tail=(bp->tail+1) % bp->count;
return 0;
}
void WriteThread::internalEndOfFile()
{
if(!bufferIsEmpty())
{
if(sequential)
{
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,QStringLiteral("[")+QString::number(id)+QStringLiteral("] start the write"));
emit internalStartWrite();
}
else
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,QStringLiteral("[")+QString::number(id)+QStringLiteral("] buffer is not empty!"));
}
else
{
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,QStringLiteral("[")+QString::number(id)+QStringLiteral("] writeIsStopped"));
emit writeIsStopped();
}
}
void WriteThread::internalWrite()
{
const size_t blockSize=sizeof(blockArray);
int32_t bytesWriten=0; ///< temp data for block writing, the bytes writen
uint32_t blockArrayStop=this->blockArrayStop;//load value out of atomic
uint32_t blockArrayStart=this->blockArrayStart;//load value out of atomic
bool bytesWasWriten=false;
if(blockArrayStart==blockArrayStop && !blockArrayIsFull)
{
if(!endDetected)
readThread->callBack();
return;
}
do
{
if(stopIt)
{
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Warning,"["+std::to_string(id)+"] stopIt");
return;
}
if(stopIt)
return;
#ifdef ULTRACOPIER_PLUGIN_DEBUG
status=Write;
#endif
errno=0;
if(blockArrayStop>blockArrayStart)
{
void * ptr=blockArray+blockArrayStart;
const size_t size=blockArrayStop-blockArrayStart;
bytesWriten=fwrite(ptr,1,size,file);
if(bytesWriten>0 && (errno==0 || errno==EAGAIN))
blockArrayStart+=bytesWriten;
}
else //if(blockArrayStart==blockSize || blockArrayStop<blockArrayStart)//and then blockArrayIsFull
{
void * ptr=blockArray+blockArrayStart;
const size_t size=blockSize-blockArrayStart;
bytesWriten=fwrite(ptr,1,size,file);
if(bytesWriten>0 && (errno==0 || errno==EAGAIN))
blockArrayStart+=bytesWriten;
}
if(blockArrayStart==blockSize)
blockArrayStart=0;
#ifdef ULTRACOPIER_PLUGIN_DEBUG
status=Idle;
#endif
if(lastGoodPosition==0)
{
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Notice,"["+std::to_string(id)+"] emit writeIsStarted()");
emit writeIsStarted();
}
lastGoodPosition+=bytesWriten;
if(bytesWriten>0)
bytesWasWriten=true;
if(stopIt)
return;
if(errno!=0 && errno!=EAGAIN)
{
ULTRACOPIER_DEBUGCONSOLE(Ultracopier::DebugLevel_Warning,"["+std::to_string(id)+"] Error in writing: "+fileName+", errno: "+std::to_string(errno));
errorString_internal="Error in writing: "+fileName+" ("+std::string(strerror(errno))+", errno: "+std::to_string(errno)+")";
stopIt=true;
emit error();
return;
}
} while(bytesWriten>0 && blockArrayStart!=blockArrayStop);
if(bytesWasWriten)
blockArrayIsFull=false;
//is empty
if(!endDetected)
readThread->callBack();
//improve the performance due to drop block split
/*if(blockArrayStart==blockArrayStop && !blockArrayIsFull)
{
blockArrayStart=BLOCKDEFAULTINITVAL;
blockArrayStop=BLOCKDEFAULTINITVAL;
} if manipulate the read thread var, need mutex and lower the performance*/
this->blockArrayStart=blockArrayStart;
if(endDetected && bufferIsEmpty())
internalEndOfFile();
}