Section (3) pcre2_jit_free_unused_memory
PCRE2 — Perl-compatible regular expressions (revised API)
This function frees unused JIT executable memory. The
argument is a general context, for custom memory management,
or NULL for standard memory management. JIT memory allocation
retains some memory in order to improve future JIT
compilation speed. In low memory conditions,
pcre2_jit_free_unused_memory() can be used
to cause this memory to be freed.
This manual page is taken from the PCRE library, which is distributed under the BSD license.