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

  • BSD mandoc
     

    NAME

    
    
    sigemptyset
    
     
    sigfillset
    
     
    sigaddset
    
     
    sigdelset
    
     
    sigismember
    
     - manipulate signal sets
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <signal.h>
    int sigemptyset (sigset_t *set);
    int sigfillset (sigset_t *set);
    int sigaddset (sigset_t *set int signo);
    int sigdelset (sigset_t *set int signo);
    int sigismember (const sigset_t *set int signo);
     

    DESCRIPTION

    These functions manipulate signal sets stored in a Fa sigset_t . Either sigemptyset ();
    or sigfillset ();
    must be called for every object of type Fa sigset_t before any other use of the object.

    The sigemptyset ();
    function initializes a signal set to be empty.

    The sigfillset ();
    function initializes a signal set to contain all signals.

    The sigaddset ();
    function adds the specified signal Fa signo to the signal set.

    The sigdelset ();
    function deletes the specified signal Fa signo from the signal set.

    The sigismember ();
    function returns whether a specified signal Fa signo is contained in the signal set.  

    RETURN VALUES

    The sigismember ();
    function returns 1 if the signal is a member of the set, 0 otherwise. The other functions return 0 upon success. A -1 return value indicates an error occurred and the global variable errno is set to indicate the reason.  

    ERRORS

    These functions could fail if one of the following occurs:

    Bq Er EINVAL
    Fa signo has an invalid value.

     

    SEE ALSO

    kill(2), sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2)  

    STANDARDS

    These functions are defined by St -p1003.1-88 .


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO
    STANDARDS


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