explain_calloc_or_die(3)

💖 explain_calloc_or_die(3) 💖

okay bestie, this one lives in the Library Functions Manual section of the libexplain universe, and it is so much nicer than raw calloc(3), no cap.

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✨ NAME ✨

explain_calloc_or_die — Allocate and clear memory and report errors 🫶

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🌸 SYNOPSIS 🌸

#include <libexplain/calloc.h>
void *explain_calloc_or_die(size_t nmemb, size_t size);
void *explain_calloc_on_error(size_t nmemb, size_t size);

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🦋 DESCRIPTION 🦋

okay so, the explain_calloc_or_die function is basically your bestie that calls the calloc(3) system call for you. and like, if it fails? it prints an explanation to stderr — and that explanation comes straight from the explain_calloc(3) function — and then it literally terminates the whole process by calling exit(EXIT_FAILURE). it's giving dramatic exit. 💀

meanwhile, explain_calloc_on_error is the chiller sibling. it also calls the calloc(3) system call, and on failure it also prints an explanation to stderr obtained from the explain_calloc(3) function — but it still returns to the caller. no exiting, no drama, just vibes. 🌈

• nmemb — the nmemb, exactly as to be passed to the calloc(3) system call. literally just hand it over unchanged, don't be weird about it. 💅
• size — the size, exactly as to be passed to the calloc(3) system call. same energy, same rule. ✨

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👑 RETURN VALUE 👑

the explain_calloc_or_die function only returns on success — check out calloc(3) if you wanna know more about that. but on failure? it prints an explanation and exits. it does not return. periodt. 😭

the explain_calloc_on_error function always returns the value return by the wrapped calloc(3) system call. always. it's reliable like that. 🫶

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🎀 EXAMPLE 🎀

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

void *result = explain_calloc_or_die(nmemb, size);

look at that. one line. iconic. 🔥

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🌟 SEE ALSO 🌟

• calloc(3) — Allocate and clear memory
• explain_calloc(3) — explain calloc(3) errors
• exit(2) — terminate the calling process

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💜 COPYRIGHT 💜

libexplain version 1.4 Copyright (C) 2010 Peter Miller

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ngl bestie, the whole thing is just libexplain version 1.4, copyright 2010 Peter Miller, and yes i'm telling you twice because the footer says it too 💖

and that's the whole page, babes — libexplain version 1.4, Copyright (C) 2010 Peter Miller, signing off 🎀✨💅 explain_calloc_or_die(3), out. 🦋