NAME¶

explain_setpriority_or_die - set program scheduling priority and report errors

SYNOPSIS¶

#include <libexplain/setpriority.h>

void explain_setpriority_or_die(int which, int who, int prio);
int explain_setpriority_on_error(int which, int who, int prio);

DESCRIPTION¶

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

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

which

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

who

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

prio

The prio, exactly as to be passed to the setpriority(2) system call.

RETURN VALUE¶

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

The explain_setpriority_on_error function always returns the value return by the wrapped setpriority(2) system call.

EXAMPLE¶

The explain_setpriority_or_die function is intended to be used in a fashion similar to the following example:

explain_setpriority_or_die(which, who, prio);

SEE ALSO¶

setpriority(2)

set program scheduling priority

explain_setpriority(3)

explain setpriority(2) errors

exit(2)

terminate the calling process

COPYRIGHT¶

libexplain version 1.4
Copyright (C) 2013 Peter Miller