libexplain/getpriority_or_die.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/sys/resource.h>
#include <libexplain/getpriority.h>
#include <libexplain/output.h>

Go to the source code of this file.

Functions
int	explain_getpriority_or_die (int which, int who)
int	explain_getpriority_on_error (int which, int who)

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Function Documentation

int explain_getpriority_on_error	(	int	which,
		int	who
	)

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.

Parameters:

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.

Returns:

The value returned by the wrapped getpriority(2) system call.

Example:

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

 int result = explain_getpriority_on_error(which, who);
 if (result < 0)
 {
     ...cope with error
     ...no need to print error message
 }

Definition at line 52 of file getpriority_or_die.c.

int explain_getpriority_or_die	(	int	which,
		int	who
	)

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).

Parameters:

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.

Returns:

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

Example:

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

 int result = explain_getpriority_or_die(which, who);

Definition at line 27 of file getpriority_or_die.c.