1explain_nice_or_die(3)     Library Functions Manual     explain_nice_or_die(3)
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NAME

6       explain_nice_or_die - change process priority and report errors
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SYNOPSIS

9       #include <libexplain/nice.h>
10       int explain_nice_or_die(int inc);
11       int explain_nice_on_error(int inc);
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DESCRIPTION

14       The  explain_nice_or_die  function  is  used to call the nice(2) system
15       call. On failure an explanation will be  printed  to  stderr,  obtained
16       from  the  explain_nice(3) function, and then the process terminates by
17       calling exit(EXIT_FAILURE).
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19       The explain_nice_on_error function is used to call the  nice(2)  system
20       call.  On  failure  an  explanation will be printed to stderr, obtained
21       from the explain_nice(3) function, but still returns to the caller.
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23       inc     The inc, exactly as to be passed to the nice(2) system call.
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RETURN VALUE

26       The explain_nice_or_die function only returns on success,  see  nice(2)
27       for  more  information. On failure, prints an explanation and exits, it
28       does not return.
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30       The explain_nice_on_error function always returns the value  return  by
31       the wrapped nice(2) system call.
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EXAMPLE

34       The  explain_nice_or_die  function  is intended to be used in a fashion
35       similar to the following example:
36              int result = explain_nice_or_die(inc);
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SEE ALSO

39       nice(2) change process priority
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41       explain_nice(3)
42               explain nice(2) errors
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44       exit(2) terminate the calling process
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47       libexplain version 0.40
48       Copyright (C) 2009 Peter Miller
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52                                                        explain_nice_or_die(3)
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