unistd

  • #include <posix/unistd.h>

  • Defines the APIs related to system sleep

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Header File

Functions

unsigned sleep(unsigned seconds)

Suspend execution for an interval of time.

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

Note

Return value of a positive number is not yet supported.

Parameters

seconds – [in] The number of seconds to suspend execution.

Return values

0 – - Upon successful completion.

int usleep(useconds_t usec)

Suspend execution for microsecond intervals.

This is a useful, non-POSIX function.

Parameters

usec – [in] The number of microseconds to suspend execution.

Return values

0 – - Upon successful completion.