разрешить сигналы для прерывания системных вызовов (allow signals to interrupt system calls)
Имя (Name)
siginterrupt - allow signals to interrupt system calls
Синопсис (Synopsis)
#include <signal.h>
int siginterrupt(int sig, int flag);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
siginterrupt():
_XOPEN_SOURCE >= 500
|| /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
|| /* Glibc <= 2.19: */ _BSD_SOURCE
Описание (Description)
The siginterrupt() function changes the restart behavior when a
system call is interrupted by the signal sig. If the flag
argument is false (0), then system calls will be restarted if
interrupted by the specified signal sig. This is the default
behavior in Linux.
If the flag argument is true (1) and no data has been
transferred, then a system call interrupted by the signal sig
will return -1 and errno will be set to EINTR.
If the flag argument is true (1) and data transfer has started,
then the system call will be interrupted and will return the
actual amount of data transferred.
Возвращаемое значение (Return value)
The siginterrupt() function returns 0 on success. It returns -1
if the signal number sig is invalid, with errno set to indicate
the error.
Ошибки (Error)
EINVAL The specified signal number is invalid.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────┬───────────────┬────────────────────────────────┐
│Interface │ Attribute │ Value │
├───────────────┼───────────────┼────────────────────────────────┤
│siginterrupt() │ Thread safety │ MT-Unsafe const:sigintr │
└───────────────┴───────────────┴────────────────────────────────┘
Стандарты (Conforming to)
4.3BSD, POSIX.1-2001. POSIX.1-2008 marks siginterrupt() as
obsolete, recommending the use of sigaction(2) with the
SA_RESTART flag instead.
Смотри также (See also)
signal(2)
