Content-type: text/html Man page of nanosleep

nanosleep

Section: C Library Functions (3)
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NAME

nanosleep - Suspend a process from execution for the specified timer interval (P1003.1b)  

SYNOPSIS

#include <time.h>

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

PARAMETERS

*rqtp
A pointer to the timespec data structure that defines the time interval during which the calling process is suspended.
*rmtp
A pointer to the timespec data structure that receives the amount of time remaining in the previously requested interval, or zero if the full interval has elapsed.
 

DESCRIPTION

The nanosleep function suspends a process until one of the following conditions is met:

The time interval specified in rqtp has elapsed.
A signal is delivered to the calling process and the action is to deliver a signal to a signal catching function (or to terminate the process).

The suspension time may be longer than requested because the argument value is rounded up to an integer multiple of the clock resolution or due to the scheduling of other activity. Except when it is interrupted by a signal, the suspension time is not less than the time (as measured by the system clock) specified by the rqtp argument.  

RETURN VALUES

When the nanosleep function returns because the requested time has elapsed, the call is successful and a value of 0 is returned.

If the nanosleep function returns because it was interrupted by a signal, a value of -1 is returned. If the rmtp argument is not NULL, the timespec structure referenced by the call is updated to contain the time remaining in the interval. If the rmtp argument is NULL, the remaining time is not returned.

On an unsuccessful call, a value of -1 is returned and errno is set to indicate that an error occurred.  

ERRORS

The nanosleep function fails under the following conditions:

[EINTR]
The nanosleep function was interrupted by a signal.
[EINVAL]
The rqtp argument specified a nanosecond value less than zero or greater than or equal to 1000 million.
 

RELATED INFORMATION

Functions: sleep(1) delim off


 

Index

NAME
SYNOPSIS
PARAMETERS
DESCRIPTION
RETURN VALUES
ERRORS
RELATED INFORMATION

This document was created by man2html, using the manual pages.
Time: 02:42:40 GMT, October 02, 2010