NAME
sigwait - wait for a signal SYNOPSIS
#include
int sigwait(const sigsett *set, int *sig); Feature Test Macro Requirements for glibc (see featuretestmacros(7)): sigwait(): POSIXCSOURCE >= 1 || XOPENSOURCE || POSIXSOURCE 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 siginfot 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 │ └──────────┴───────────────┴─────────┘ CONFORMING TO
POSIX.1-2001. NOTES sigwait() is implemented using sigtimedwait(2). EXAMPLE See pthreadsigmask(3). SEE ALSO sigaction(2), signalfd(2), sigpending(2), sigsuspend(2), sigwait‐ info(2), sigsetops(3), signal(7) COLOPHON
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Linux 2012-07-21 SIGWAIT(3)