HP Advanced Communications Controllers (ACC) manual Zltmx

ZCOM C I/F Library Routines

ZLTMX (3X)

	ZLTMX (3X)
NAME	zltmx – Control logical terminal multiplexing
SYNOPSIS
#include	<zcom/zcomsys.h>
#include	<zcom/zcomcall.h> /* if compiled with ANSI C (recommended) */

int32 zltmx (zap, mode)

zaddr_type *zap;

int32 mode;

DESCRIPTION	Routine zltmx is used to enable or disable the multiplexing of logical
	terminals. This routine allows dynamic control of the
	ZCOM_LTFLAG_OMX and ZCOM_LTFLAG_IMX logical terminal flag
	bits. These flag bits are initialized for each terminal ZLU by TTGEN, and
	may be changed by use of this call.
	After calling this routine, the subsequent zrcvr and zsend calls will work
	according to the new settings.
	The libraries libzcom_c.a and libpthread.a must be linked into the calling
	program by giving the options “-lzcom_c -lpthread” to cc(1) or ld(1).
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).

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