| explain_getrusage_or_die(3) | Library Functions Manual | explain_getrusage_or_die(3) |
explain_getrusage_or_die - get resource usage and report errors
#include <libexplain/getrusage.h>
void explain_getrusage_or_die(int who, struct rusage *usage);
int explain_getrusage_on_error(int who, struct rusage *usage);
The explain_getrusage_or_die function is used to call the getrusage(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getrusage(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_getrusage_on_error function is used to call the getrusage(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_getrusage(3) function, but still returns to the caller.
The explain_getrusage_or_die function only returns on success, see getrusage(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_getrusage_on_error function always returns the value return by the wrapped getrusage(2) system call.
The explain_getrusage_or_die function is intended to be used in a fashion similar to the following example:
explain_getrusage_or_die(who, usage);
libexplain version 1.4
Copyright (C) 2013 Peter Miller