buffer_init_free(3)

💅 buffer_init_free(3) — straight outta the Library Functions Manual

okay bestie sit down because we're doing buffer allocation today and it's actually so cute. this whole page lives in section 3 of the Library Functions Manual, and it's giving short but iconic ✨

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🌸 NAME 🌸

buffer_init_free — initialize buffer structure 🫶

like... that's it. that's the job. she initializes. she's a buffer struct starter pack.

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✨ SYNTAX ✨

first, you gotta let her in the door:

#include <libowfat/buffer.h>

then the actual call:

void buffer_init_free(buffer &b,
                ssize_t (*op)(int,char*,size_t),
                int fd, char* y, size_t ylen);

no cap, that's the whole signature. b is your buffer, op is the callback with that (int,char*,size_t) shape, fd is a file descriptor, and y + ylen are your memory and its length 💖

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💜 DESCRIPTION 💜

so buffer_init_free is literally buffer_init's twin sister. same energy, same vibes, same everything...

EXCEPT — and this is the main character plot twist — the memory pointed to by y is marked to be freed by buffer_close() 👑

that's it. that's the difference. buffer_init_free says "yeah bestie, this memory is mine now, buffer_close() is gonna handle it." so don't you dare go freeing y yourself, that's not your job anymore, that's buffer_close()'s moment 💅

⚠️ lowkey important: the whole point is that y gets marked for freeing by buffer_close(). that's the only thing that separates her from buffer_init. don't lose the plot 🎀

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🦋 SEE ALSO 🦋

• buffer_init(3) — the sibling she's literally described in terms of, go read her
• buffer_mmap_read(3) — different vibe, also a buffer thing
• buffer(3) — the main hub, the mothership, the whole lore 🌈

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and that's the tea, bestie 🍓 this lil masterpiece is buffer_init_free(3), hanging out in the Library Functions Manual, being short, being sweet, being exactly like buffer_init except for that one glorious free-the-memory detail. go forth and initialize responsibly 💖✨🎀