`siginterrupt.3p` ( 3 )

разрешить сигналы для прерывания функций (allow signals to interrupt functions)

Пролог (Prolog)

This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

Имя (Name)

siginterrupt — allow signals to interrupt functions

Синопсис (Synopsis)

#include <signal.h>

int siginterrupt(int sig, int flag);

Описание (Description)

The siginterrupt() function shall change the restart behavior when a function is interrupted by the specified signal. The function siginterrupt(sig, flag) has an effect as if implemented as:

int siginterrupt(int sig, int flag) { int ret; struct sigaction act;

(void) sigaction(sig, NULL, &act); if (flag) act.sa_flags &= ~SA_RESTART; else act.sa_flags |= SA_RESTART; ret = sigaction(sig, &act, NULL); return ret; }

Возвращаемое значение (Return value)

Upon successful completion, siginterrupt() shall return 0; otherwise, -1 shall be returned and errno set to indicate the error.

Ошибки (Error)

The siginterrupt() function shall fail if:

EINVAL The sig argument is not a valid signal number.

The following sections are informative.

Примеры (Examples)

None.

Использование в приложениях (Application usage)

The siginterrupt() function supports programs written to historical system interfaces. Applications should use the sigaction() with the SA_RESTART flag instead of the obsolescent siginterrupt() function.

Обоснование (Rationale)

None.

Будущие направления (Future directions)