Unix/Linux Go Back    


FreeBSD 11.0 - man page for nanosleep (freebsd section 2)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


NANOSLEEP(2)			     BSD System Calls Manual			     NANOSLEEP(2)

NAME
     nanosleep -- suspend process execution for an interval measured in nanoseconds

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <time.h>

     int
     nanosleep(const struct timespec *rqtp, struct timespec *rmtp);

DESCRIPTION
     The nanosleep() system call causes the calling thread to sleep until the time interval spec-
     ified by rqtp has elapsed.  An unmasked signal will cause it to terminate the sleep early,
     regardless of the SA_RESTART value on the interrupting signal.

RETURN VALUES
     If the nanosleep() system call returns because the requested time has elapsed, the value
     returned will be zero.

     If the nanosleep() system call returns due to the delivery of a signal, the value returned
     will be -1, and the global variable errno will be set to indicate the interruption.  If rmtp
     is non-NULL, the timespec structure it references is updated to contain the unslept amount
     (the request time minus the time actually slept).

ERRORS
     The nanosleep() system call fails if:

     [EFAULT]		Either rqtp or rmtp points to memory that is not a valid part of the
			process address space.

     [EINTR]		The nanosleep() system call was interrupted by the delivery of a signal.

     [EINVAL]		The rqtp argument specified a nanosecond value less than zero or greater
			than or equal to 1000 million.

     [ENOSYS]		The nanosleep() system call is not supported by this implementation.

SEE ALSO
     sigsuspend(2), sleep(3)

STANDARDS
     The nanosleep() system call conforms to IEEE Std 1003.1b-1993 (``POSIX.1'').

BSD					  April 17, 1997				      BSD
Unix & Linux Commands & Man Pages : ©2000 - 2017 Unix and Linux Forums


All times are GMT -4. The time now is 06:53 AM.