HP UX 11i v1 I/O Cards manual 148

ZCOM C I/F Library Routines

LTQDPUT (3X)

Threads	This routine may be called from a multi-threaded application using the
Considerations	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).
PARAMETERS
zap	ZCOM address of the terminal ZLU to store data into.
queue	Terminal data queue number (specifies which data queue
	is to be used):
	0	- Sub-packet holding queue (reserved)
	1	- Data holding queue A
	2	- Data holding queue B
	3	- Data holding queue C
	4	- Data holding queue D
ibuf	Data buffer to be stored.
len	Length in bytes of ibuf.

NOTES

Normally, the data queue number used should be allocated by ZMON (see the man page for zltqueue on how to get a data queue number). There is no queue ownership validation within this routine; it is up to the user to make sure that the queue usage is valid and consistent.

148 Chapter 4