void
Xfer::Process()
{
ReadPendingMessages();
// While there are complete messages, read and process them.
while (bufferedInput.Size() > 0)
{
int curOpcode;
int curLength;
bufferedInput.ReadInt(&curOpcode);
bufferedInput.ReadInt(&curLength);
bool bytesNeedToBeSkipped = true;
if (curOpcode < subjectList.size())
{
if (subjectList[curOpcode])
{
debug5 << "Xfer::Process: Opcode=" << curOpcode
<< ", len=" << curLength
<< ", type="
<< subjectList[curOpcode]->TypeName().c_str() << endl;
// Read the object into its local copy.
subjectList[curOpcode]->Read(bufferedInput);
// Indicate that we want Xfer to ignore update messages if
// it gets them while processing the Notify.
SetUpdate(false);
subjectList[curOpcode]->Notify();
bytesNeedToBeSkipped = false;
}
}
if (bytesNeedToBeSkipped)
{
debug1 << "Xfer::Process: Opcode " << curOpcode
<< " is unknown! Skipping " << curLength << " bytes." << endl;
unsigned char uchar;
for (int i = 0; i < curLength; ++i)
bufferedInput.Read(&uchar);
}
}
}
void
MPIXfer::Process()
{
ReadPendingMessages();
// While there are complete messages, read and process them.
while(bufferedInput.Size() > 0)
{
int curOpcode;
int curLength;
bufferedInput.ReadInt(&curOpcode);
bufferedInput.ReadInt(&curLength);
if(subjectList[curOpcode])
{
if(PAR_UIProcess())
{
int i, msgLength = curLength + sizeof(int)*2;
#ifdef VISIT_BLUE_GENE_P
// Make the buffer be 32-byte aligned
unsigned char *buf = 0;
posix_memalign((void **)&buf, 32, msgLength);
#else
unsigned char *buf = (unsigned char*)malloc(msgLength * sizeof(unsigned char));
#endif
unsigned char *tmp = buf;
// Add the message's opcode and length into the buffer
// that we'll broadcast to other processes so their
// Xfer objects know what's up.
unsigned char *cptr = (unsigned char *)&curOpcode;
for(i = 0; i < sizeof(int); ++i)
*tmp++ = *cptr++;
cptr = (unsigned char *)&curLength;
for(i = 0; i < sizeof(int); ++i)
*tmp++ = *cptr++;
// Transcribe the message into a buffer that we'll
// communicate to other processes and also a new
// temporary connection that we'll feed to the interested
// object.
BufferConnection newInput;
unsigned char c;
for(i = curLength; i > 0; --i)
{
// Read a character from the input connection.
bufferedInput.ReadChar(&c);
*tmp++ = c;
newInput.WriteChar(c);
}
// Send the current opcode and message length. Note that we
// use VisIt_MPI_Bcast for this call since we need to match
// what's happening in PAR_EventLoop in the engine. This version
// of bcast allows engines to reduce their activity instead of
// using a spin-wait bcast.
if (slaveProcessInstruction)
slaveProcessInstruction();
VisIt_MPI_Bcast((void *)&msgLength, 1, MPI_INT,
0, VISIT_MPI_COMM);
// Use regular bcast since the previous call to bcast will
// already have gotten the attention of the other processors.
MPI_Bcast((void *)buf, msgLength, MPI_UNSIGNED_CHAR,
0, VISIT_MPI_COMM);
free(buf);
// Read the object from the newInput into its local copy.
subjectList[curOpcode]->Read(newInput);
}
else
{
// Non-UI Processes can read the object from *input.
subjectList[curOpcode]->Read(bufferedInput);
}
// Indicate that we want Xfer to ignore update messages if
// it gets them while processing the Notify.
SetUpdate(false);
subjectList[curOpcode]->Notify();
}
}
}