bionic (3) explain_getpriority_or_die.3.gz

NAME

       explain_getpriority_or_die - get program scheduling priority and report errors

SYNOPSIS

       #include <libexplain/getpriority.h>
       int explain_getpriority_or_die(int which, int who);
       int explain_getpriority_on_error(int which, int who);

DESCRIPTION

       The  explain_getpriority_or_die  function  is  used to call the getpriority(2) system call. On failure an
       explanation will be printed to stderr, obtained from the explain_getpriority(3) function,  and  then  the
       process terminates by calling exit(EXIT_FAILURE).

       The  explain_getpriority_on_error  function is used to call the getpriority(2) system call. On failure an
       explanation will be printed to stderr, obtained  from  the  explain_getpriority(3)  function,  but  still
       returns to the caller.

       which   The which, exactly as to be passed to the getpriority(2) system call.

       who     The who, exactly as to be passed to the getpriority(2) system call.

RETURN VALUE

       The explain_getpriority_or_die function only returns on success, see getpriority(2) for more information.
       On failure, prints an explanation and exits, it does not return.

       The explain_getpriority_on_error function always returns the value return by the  wrapped  getpriority(2)
       system call.

EXAMPLE

       The  explain_getpriority_or_die  function  is  intended  to be used in a fashion similar to the following
       example:
              int result = explain_getpriority_or_die(which, who);

SEE ALSO

       getpriority(2)
               get program scheduling priority

       explain_getpriority(3)
               explain getpriority(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2013 Peter Miller

                                                                                   explain_getpriority_or_die(3)