HP UX 11i v1 I/O Cards manual Parameters

Threads Considerations

PARAMETERS

NOTES

RETURNVALUE

ZCOM C I/F Library Routines

ZLTMX (3X)

This routine may be called from a multi-threaded application using the POSIX (1003.1c) kernel threads API package. This routine has the following characteristics when called by a multi-threaded application:

cancellation point Thread cancellation can occur when a thread calls this routine.

async-cancel unsafe The calling thread’s cancelability type must be PTHREAD_CANCEL_DEFERRED if cancellation is enabled.

async-signal unsafe It cannot be called from a signal handler.

fork unsafe		It cannot be called by a child process after fork(2) but
		before exec(2).
zap	ZCOM address.
mode	Multiplexing control mode
	ZcENB_OUTB_MLTPLXG		(1) - Enable outbound multiplexing
	ZcENB_INB_MLTPLXG		(2)	- Enable inbound multiplexing
	ZcDSB_OUTB_MLTPLXG		(3)	- Disable outbound multiplexing
	ZcDSB_INB_MLTPLXG		(4)	- Disable inbound multiplexing

For a more detailed description of the multiplexing facilities available under ZCOM, see the section of the manual under the heading “ZCOM Message Handling”.

Routine zltmx returns 0 if successful. Otherwise, a non-zeroerror code is returned. See /opt/acc/include/zcom/zcomsys.h for the list of ZCOM error codes and their meanings.

228 Chapter 4