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sigaddset(3posix) [posix man page]

SIGADDSET(P)						     POSIX Programmer's Manual						      SIGADDSET(P)

NAME
sigaddset - add a signal to a signal set SYNOPSIS
#include <signal.h> int sigaddset(sigset_t *set, int signo); DESCRIPTION
The sigaddset() function adds the individual signal specified by the signo to the signal set pointed to by set. Applications shall 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(), sigac- tion(), sigaddset(), sigdelset(), sigismember(), sigpending(), sigprocmask(), sigsuspend(), sigtimedwait(), sigwait(), or sigwaitinfo(), the results are undefined. RETURN VALUE
Upon successful completion, sigaddset() shall return 0; otherwise, it shall return -1 and set errno to indicate the error. ERRORS
The sigaddset() function may fail if: EINVAL The value of the signo argument is an invalid or unsupported signal number. The following sections are informative. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
Signal Concepts , sigaction() , sigdelset() , sigemptyset() , sigfillset() , sigismember() , sigpending() , sigprocmask() , sigsuspend() , the Base Definitions volume of IEEE Std 1003.1-2001, <signal.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- 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 . IEEE
/The Open Group 2003 SIGADDSET(P)

Check Out this Related Man Page

SIGDELSET(3P)						     POSIX Programmer's Manual						     SIGDELSET(3P)

PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
sigdelset - delete a signal from a signal set SYNOPSIS
#include <signal.h> int sigdelset(sigset_t *set, int signo); DESCRIPTION
The sigdelset() function deletes the individual signal specified by signo from the signal 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(), sigac- tion(), sigaddset(), sigdelset(), sigismember(), sigpending(), sigprocmask(), sigsuspend(), sigtimedwait(), sigwait(), or sigwaitinfo(), the results are undefined. RETURN VALUE
Upon successful completion, sigdelset() shall return 0; otherwise, it shall return -1 and set errno to indicate the error. ERRORS
The sigdelset() 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. EXAMPLES
None. APPLICATION USAGE
None. RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
Signal Concepts, sigaction(), sigaddset(), sigemptyset(), sigfillset(), sigismember(), sigpending(), sigprocmask(), sigsuspend(), the Base Definitions volume of IEEE Std 1003.1-2001, <signal.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- 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 . IEEE
/The Open Group 2003 SIGDELSET(3P)
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