SIGWAIT(3) - man page online | library functions

Wait for a signal.

SIGWAIT(3)                          Linux Programmer's Manual                          SIGWAIT(3)

NAME sigwait - wait for a signal
SYNOPSIS #include <signal.h> int sigwait(const sigset_t *set, int *sig); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): sigwait(): _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
DESCRIPTION The sigwait() function suspends execution of the calling thread until one of the signals specified in the signal set set becomes pending. 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.
RETURN VALUE On success, sigwait() returns 0. On error, it returns a positive error number (listed in ERRORS).
ERRORS EINVAL set contains an invalid signal number.
ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ┌──────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├──────────┼───────────────┼─────────┤ │sigwait() │ Thread safety │ MT-Safe │ └──────────┴───────────────┴─────────┘
NOTES sigwait() is implemented using sigtimedwait(2). 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.
EXAMPLE See pthread_sigmask(3).
SEE ALSO sigaction(2), signalfd(2), sigpending(2), sigsuspend(2), sigwaitinfo(2), sigsetops(3), signal(7)
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Linux 2015-08-08 SIGWAIT(3)
This manual Reference Other manuals
sigwait(3) referred by kill(2) | libzeep(3) | nptl(7) | pth(3) | pthread_sigmask(3) | pthread_sigqueue(3) | signal(7) | signalfd(2) | sigqueue(3) | sigsuspend(2) | sigwaitinfo(2) | sigwaittest(8)
refer to attributes(7) | feature_test_macros(7) | nptl(7) | pthread_sigmask(3) | sigaction(2) | signal(7) | signalfd(2) | sigpending(2) | sigsetops(3) | sigsuspend(2) | sigwaitinfo(2)