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    Command:

    sigpending

    
    
    

    SYNOPSIS

           #include <signal.h>
    
           int sigpending(sigset_t *set);
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           sigpending(): _POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _POSIX_SOURCE
    
    
    

    DESCRIPTION

           sigpending()  returns  the set of signals that are pending for delivery
           to the calling thread (i.e., the signals which have been  raised  while
           blocked).  The mask of pending signals is returned in set.
    
    
    

    RETURN VALUE

           sigpending()  returns 0 on success and -1 on error.  In the event of an
           error, errno is set to indicate the cause.
    
    
    

    ERRORS

           EFAULT set points to memory which is not a valid part  of  the  process
                  address space.
    
    
    

    CONFORMING TO

           POSIX.1-2001.
    
    
    

    NOTES

           See sigsetops(3) for details on manipulating signal sets.
    
           If  a  signal is both blocked and has a disposition of "ignored", it is
           not added to the mask of pending signals when generated.
    
           The set of signals that is pending for a thread is the union of the set
           of  signals that is pending for that thread and the set of signals that
           is pending for the process as a whole; see signal(7).
    
           A child created via fork(2) initially has an empty pending signal  set;
           the pending signal set is preserved across an execve(2).
    
    
    

    BUGS

           In  versions  of glibc up to and including 2.2.1, there is a bug in the
           wrapper function for sigpending() which means  that  information  about
           pending real-time signals is not correctly returned.
    
    
    

    SEE ALSO

           kill(2), sigaction(2), signal(2), sigprocmask(2), sigsuspend(2), sigse-
           tops(3), signal(7)
    
    
    

    Linux 2013-12-11 SIGPENDING(2)

    
    
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