unistd.h File Reference

Standard symbolic constants and types. More...

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Functions
unsigned	sleep (unsigned seconds)
	Suspend execution for an interval of time. More...
int	usleep (useconds_t usec)
	Suspend execution for microsecond intervals. More...

Detailed Description

Standard symbolic constants and types.

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/unistd.h.html

Function Documentation

sleep()

unsigned sleep

(

unsigned

seconds

)

Suspend execution for an interval of time.

http://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html

Parameters

[in]

seconds

The number of seconds to suspend execution.

Return values

0	- Upon successful completion.

Note

Return value of a positive number is not yet supported.

usleep()

int usleep

(

useconds_t

usec

)

Suspend execution for microsecond intervals.

This is a useful, non-POSIX function.

Parameters

[in]

usec

The number of microseconds to suspend execution.

Return values

0	- Upon successful cocmpletion.