nanosleep()

Приостановить поток до истечения времени или прихода сигнала

Прототип:

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

Аргументы:

rqtp

A pointer to a struct timespec that specifies the time interval for which you want to suspend the thread.

rmtp

NULL, or a pointer to a struct timespec where the function can store the amount of time remaining in the interval (the requested time minus the time actually slept).

Библиотека:

libc

Описание:

The nanosleep() function causes the calling thread to be suspended from execution until either:

• The time interval specified by the rqtp argument has elapsed
• A signal is delivered to the thread, and the signal's action is to invoke a signal-catching function or terminate the process.

---

The suspension time may be longer than requested because the argument value is rounded up to be a multiple of the system timer resolution or because of scheduling and other system activity.

---

Возвращаемое значение:

0

The requested time has elapsed.

-1

Функция была прервана сигналом. Код ошибки записан в errno.

Коды ошибок:

EAGAIN

All timers are in use. You'll have to wait for a process to release one.

EFAULT

A fault occurred trying to access the buffers provided.

EINTR

The nanosleep() function was interrupted by a signal.

EINVAL

The number of nanoseconds specified by the tv_nsec member of the struct timespec pointed to by rqtp is less than zero or greater than or equal to 1000 million.

Классификация:

POSIX 1003.1 TMR

Точка остановки потока

Да

Обработчик прерываний

Нет

Обработчик сигналов

Нет

В потоке

Да

Тематические ссылки:

delay(), errno, clock_getres(), clock_gettime(), clock_settime(), sleep(), timer_create(), timer_delete(), timer_gettime(), timer_settime(), struct timespec, usleep()

Предыдущий раздел: Описание API системной библиотеки