NAME¶
explain_nice_or_die - change process priority and report errors
SYNOPSIS¶
#include <libexplain/nice.h>
int explain_nice_or_die(int inc);
int explain_nice_on_error(int inc);
DESCRIPTION¶
The
explain_nice_or_die function is used to call the
nice(2)
system call. On failure an explanation will be printed to
stderr,
obtained from the
explain_nice(3) function, and then the process
terminates by calling exit(EXIT_FAILURE).
The
explain_nice_on_error function is used to call the
nice(2)
system call. On failure an explanation will be printed to
stderr,
obtained from the
explain_nice(3) function, but still returns to the
caller.
- inc
- The inc, exactly as to be passed to the nice(2)
system call.
RETURN VALUE¶
The
explain_nice_or_die function only returns on success, see
nice(2) for more information. On failure, prints an explanation and
exits, it does not return.
The
explain_nice_on_error function always returns the value return by the
wrapped
nice(2) system call.
EXAMPLE¶
The
explain_nice_or_die function is intended to be used in a fashion
similar to the following example:
int result = explain_nice_or_die(inc);
SEE ALSO¶
- nice(2)
- change process priority
- explain_nice(3)
- explain nice(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT¶
libexplain version 0.52
Copyright (C) 2009 Peter Miller