PCRE2_JIT_...SED_MEMORY(3)

💖 NAME 💖

bestie, this is the page for PCRE2 — Perl-compatible regular expressions (revised API). yes, the whole library. and specifically the pcre2_jit_free_unused_memory corner of it. the header up top is the official PCRE2_JIT_...SED_MEMORY(3) situation (the title got squished by the man-page generator, not by me, i promise 😭), and the manual name is Library Functions Manual energy all the way. slay.

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✨ SYNOPSIS ✨

okay so first you gotta pull in the header, classic move:

#include <pcre2.h>

then the actual call, one line, iconic:

void pcre2_jit_free_unused_memory(pcre2_general_context *gcontext);

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🦋 DESCRIPTION 🦋

so what does this function do? it frees unused JIT executable memory. that's the whole vibe. lowkey the entire job.

the argument it takes is a general context — that's your hook for custom memory management — or you can just pass NULL and roll with standard memory management. no thoughts, head empty, NULL it is 🫶.

now here's the tea: JIT memory allocation retains some memory on purpose, so future JIT compilation stays speedy. it's giving "i'm keeping this just in case" energy. but under low memory conditions, you can call pcre2_jit_free_unused_memory() to make that kept-around memory get freed. pressure's on, memory's tight, she lets it go 💅.

also important, bestie: there's a complete description of the PCRE2 native API over in the pcre2api page, and a description of the POSIX API in the pcre2posix page. go read those if you want the full lore 📚

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okay that's the entire page, no cap. and for the cute sign-off: this whole thing is PCRE2 10.47, dated 24 April 2020, and it's the PCRE2_JIT_...SED_MEMORY(3) manual page living its best life in the Library Functions Manual 🌈⭐💜