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sigismember (3)
  • sigismember (3) ( FreeBSD man: Библиотечные вызовы )
  • sigismember (3) ( Русские man: Библиотечные вызовы )
  • sigismember (3) ( Linux man: Библиотечные вызовы )
  • >> sigismember (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    sigismember - test for a signal in a signal set
     
    

    SYNOPSIS

    #include <signal.h>

    int sigismember(const sigset_t *set, int signo);
     

    DESCRIPTION

    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.  

    RETURN VALUE

    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.  

    ERRORS

    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.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    None.  

    RATIONALE

    None.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    Signal Concepts , sigaction() , sigaddset() , sigdelset() , sigfillset() , sigemptyset() , 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 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 .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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