Проект OpenNet: MAN nanosleep (2) Системные вызовы (FreeBSD и Linux)

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nanosleep (2)

>> nanosleep (2) ( FreeBSD man: Системные вызовы )

nanosleep (2) ( Русские man: Системные вызовы )

nanosleep (2) ( Linux man: Системные вызовы )

nanosleep (3) ( Solaris man: Библиотечные вызовы )

nanosleep (3) ( POSIX man: Библиотечные вызовы )

BSD mandoc

NAME



nanosleep

 - suspend process execution for an interval measured in nanoseconds

LIBRARY

Lb libc

SYNOPSIS

#include <time.h>
int nanosleep (const struct timespec *rqtp struct timespec *rmtp);

DESCRIPTION

The nanosleep ();
system call causes the process to sleep for the specified time. 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 Fa 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:

Bq Er EFAULT: Either Fa rqtp or Fa rmtp points to memory that is not a valid part of the process address space.
Bq Er EINTR: The nanosleep ();
system call was interrupted by the delivery of a signal.
Bq Er EINVAL: The Fa rqtp argument specified a nanosecond value less than zero or greater than or equal to 1000 million.
Bq Er ENOSYS: The nanosleep ();
system call is not supported by this implementation.