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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
   Multithreading (see pthreads(7))
       The sigwait() function is thread-safe.

CONFORMING TO
       POSIX.1-2001.

NOTES
       sigwait() is implemented	using sigtimedwait(2).

EXAMPLE
       See pthread_sigmask(3).

SEE ALSO
       sigaction(2),  signalfd(2),  sigpending(2),   sigsuspend(2),   sigwait-
       info(2),	sigsetops(3), signal(7)

COLOPHON
       This  page  is  part of release 3.74 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest	  version     of     this    page,    can    be	   found    at
       http://www.kernel.org/doc/man-pages/.

Linux				  2013-12-16			    SIGWAIT(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | ATTRIBUTES | CONFORMING TO | NOTES | EXAMPLE | SEE ALSO | COLOPHON

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