sigwait(3) — Справочная страница Linux

sigwait(3)              Library Functions Manual              sigwait(3)

ИМЯ

       sigwait - wait for a signal

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <signal.h>

       int sigwait(const sigset_t *restrict set, int *restrict sig);

   Feature Test Macro Requirements for glibc (see
   feature_test_macros(7)):

       sigwait():
           Since glibc 2.26:
               _POSIX_C_SOURCE >= 199506L
           glibc 2.25 and earlier:
               _POSIX_C_SOURCE

ОПИСАНИЕ

       The sigwait() function suspends execution of the calling thread
       until one of the signals specified in the signal set set becomes
       pending.  For a signal to become pending, it must first be
       blocked with sigprocmask(2).  The function accepts the signal
       (removes it from the pending list of signals), and returns the
       signal number in sig.

       The operation of sigwait() is the same as sigwaitinfo(2), except
       that:

       •  sigwait() returns only the signal number, rather than a
          siginfo_t structure describing the signal.

       •  The return values of the two functions are different.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       On success, sigwait() returns 0.  On error, it returns a positive
       error number (listed in ERRORS).

ОШИБКИ

       EINVAL set contains an invalid signal number.

АТРИБУТЫ

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ sigwait()                           │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

ВЕРСИИ

       sigwait() is implemented using sigtimedwait(2); consult its
       NOTES.

       The glibc implementation of sigwait() silently ignores attempts
       to wait for the two real-time signals that are used internally by
       the NPTL threading implementation.  See nptl(7) for details.

СТАНДАРТЫ

       POSIX.1-2008.

ИСТОРИЯ

       POSIX.1-2001.

ПРИМЕРЫ

       See pthread_sigmask(3).

СМОТРИТЕ ТАКЖЕ

       sigaction(2), signalfd(2), sigpending(2), sigsuspend(2),
       sigwaitinfo(2), sigsetops(3), signal(7)

КОЛОФОН

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
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       2024-06-26.  If you discover any rendering problems in this HTML
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       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                     sigwait(3)

Страницы, которые ссылаются на эту страницу: kill(2), signalfd(2), sigsuspend(2), sigwaitinfo(2), pthread_sigmask(3), pthread_sigqueue(3), sigqueue(3), nptl(7), signal(7)