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ZCOM C I/F Library Routines

ZTIMR (3X)

Chapter 4326

ZTIMR (3X)

NAME ztimr – Enable/disable ZLU timer

SYNOPSIS

#include <zcom/zcomsys.h>

#include <zcom/zcomcall.h> /* if compiled with ANSI C (recommended) */

int32 ztimr (zap, time)

zaddr_type *zap;

int32 time;

DESCRIPTION Routine ztimr is used to enable or disable the timer on a program ZLU.

When enabled, a timer message is added to the program ZLU queue

every specified time seconds. Timer messages are of type 3 (see ‘type’ in

zread).

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

Considerations

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:

PAR AMETER S

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 (program ZLU).

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HP Advanced Communications Controllers (ACC) Guía de usuario Pagina 326