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Full Discussion: Consolidating Pipes
Top Forums UNIX for Advanced & Expert Users Consolidating Pipes Post 302100668 by Corona688 on Thursday 21st of December 2006 09:49:10 AM
Old 12-21-2006
Position? It's a pipe.

I've thought of lots of applications for this idea, but the original one was a sort of temporary automatic buffer. One process produces data and writes it to the next, the next buffers it, the third reads from the buffer. When the buffer bottoms out, the process joins the input and output pipes together then quits.
 

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SETSBUF(3PVM)							  PVM Version 3.4						     SETSBUF(3PVM)

NAME
pvm_setsbuf - Switches the active send buffer. SYNOPSIS
C int oldbuf = pvm_setsbuf( int bufid ) Fortran call pvmfsetsbuf( bufid, oldbuf ) PARAMETERS
bufid Integer the message buffer identifier for the new active send buffer. A value of 0 indicates the default receive buffer. oldbuf Integer returning the message buffer identifier for the previous active send buffer. DESCRIPTION
The routine pvm_setsbuf switches the active send buffer to bufid and saves the previous active send buffer oldbuf. If bufid is set to 0 then the present active send buffer is saved and no active send buffer exists. The routine is required when managing multiple message buffers. For example switching back and forth between two buffers. One buffer could be used to send information to a graphical interface while a second buffer could be used send data to other tasks in the application. EXAMPLES
C: sbuf1 = pvm_setsbuf( sbuf2 ); Fortran: CALL PVMFSETSBUF( NEWBUF, OLDBUF ) ERRORS
These error conditions can be returned by pvm_setsbuf PvmBadParam giving an invalid bufid. PvmNoSuchBuf switching to a non-existent message buffer. SEE ALSO
pvm_setrbuf(3PVM) 30 August, 1993 SETSBUF(3PVM)
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