Originální popis anglicky:
sigismember - test for a signal in a signal set
Návod, kniha: POSIX Programmer's Manual
#include <signal.h>
int sigismember(const sigset_t *
set, int
signo );
The
sigismember() function shall test whether the signal specified by
signo is a member of the set pointed to by
set.
Applications should call either
sigemptyset() or
sigfillset() at
least once for each object of type
sigset_t prior to any other use of
that object. If such an object is not initialized in this way, but is
nonetheless supplied as an argument to any of
pthread_sigmask(),
sigaction(),
sigaddset(),
sigdelset(),
sigismember(),
sigpending(),
sigprocmask(),
sigsuspend(),
sigtimedwait(),
sigwait(), or
sigwaitinfo(), the results are undefined.
Upon successful completion,
sigismember() shall return 1 if the specified
signal is a member of the specified set, or 0 if it is not. Otherwise, it
shall return -1 and set
errno to indicate the error.
The
sigismember() function may fail if:
- EINVAL
- The signo argument is not a valid signal number, or
is an unsupported signal number.
The following sections are informative.
None.
None.
None.
None.
Signal Concepts ,
sigaction() ,
sigaddset() ,
sigdelset() ,
sigfillset() ,
sigemptyset() ,
sigpending() ,
sigprocmask() ,
sigsuspend() , the Base
Definitions volume of IEEE Std 1003.1-2001,
<signal.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
