SDL_calloc_func(3type)

📦
version 3.4.18 · 9 versions
, in fedora 43, fedora 44

💖 SDL_calloc_func(3type) — the SDL3 DATATYPES girlies' edition 💖

okay bestie, so we're talking about SDL_calloc_func today, and it's literally just a callback used to implement SDL_calloc(). that's the whole vibe. she's a function pointer, she's iconic, she shows up when SDL needs to allocate an array of stuff and zero it all out. periodt. ✨

🎀 SYNOPSIS 🎀

#include <SDL3/SDL_stdinc.h>

typedef void *(SDLCALL *SDL_calloc_func)(size_t nmemb, size_t size);

no cap, that's the whole signature. two size_ts in, a void * out. chef's kiss. 💅

🌸 DESCRIPTION 🌸

so here's the tea: SDL will always make sure that the nmemb and size it hands you are both greater than 0. both of them. every time. so you don't gotta sit there doing vibe checks on zero-sized arrays, because SDL already did that for you, bestie. 🫶

🦋 FUNCTION PARAMETERS 🦋

  • nmemb — the number of elements in the array. like, how many lil guys are we fitting in here. 🍓
  • size — the size of each element of the array. how chonky is each individual lil guy. 🌈

⭐ RETURN VALUE ⭐

you hand back a pointer to the allocated array, or NULL if the allocation failed. and listen — that NULL is not a vibe, that's a real "girl, something went wrong" moment, so handle it. 😭

🧚 THREAD SAFETY 🧚

it should be safe to call this callback from any thread. any of them. all of them. go off, multithreaded queen. 👑

✨ AVAILABILITY ✨

this datatype has been available since SDL 3.2.0. so if you're on something older, bestie... we don't know her. 💀

👑 SEE ALSO 👑

lowkey important: if you're implementing this callback yourself, remember SDL is the one calling you, so match that signature exactly. no improvising, no extra args, no main character rewrites of the type. 🙈

Simple Directmedia Layer 🦋 SDL 3.4.18 🎀 SDL_calloc_func(3type)

and that's the whole page, bestie — mwah, stay allocated, drink water, and don't forget to free. 💖✨🫶

📦 where this page comes from