Timed Pauses

Timed Pauses

In many instances a program, or a process within a multiprocess program, needs to suspend execution for a period of time. IRIX contains a variety of functions that provide this capability. The functions differ in their precision and in their portability. Table 5-1 contains a summary.

Functions for Timed Suspensions
Reference Page Precision Portability Operation
sleep(3C) second POSIX Suspend for a number of seconds or until a signal arrives.
usleep(3C) microsecond SGI Suspend for a number of microseconds or until a signal arrives.
nanosleep(2) nanosecond POSIX Suspend for a number of seconds and nanoseconds or until a signal arrives.

Functions for Timed Suspensions
Reference Page	Precision	Portability	Operation
sleep(3C)	second	POSIX	Suspend for a number of seconds or until a signal arrives.
usleep(3C)	microsecond	SGI	Suspend for a number of microseconds or until a signal arrives.
nanosleep(2)	nanosecond	POSIX	Suspend for a number of seconds and nanoseconds or until a signal arrives.