| pcre_assign_jit_stack(3) - phpMan
PCRE_ASSIGN_JIT_STACK(3) Library Functions Manual PCRE_ASSIGN_JIT_STACK(3)
NAME
PCRE - Perl-compatible regular expressions
SYNOPSIS
#include <pcre.h>
void pcre_assign_jit_stack(pcre_extra *extra,
pcre_jit_callback callback, void *data);
void pcre16_assign_jit_stack(pcre16_extra *extra,
pcre16_jit_callback callback, void *data);
void pcre32_assign_jit_stack(pcre32_extra *extra,
pcre32_jit_callback callback, void *data);
DESCRIPTION
This function provides control over the memory used as a stack at run-time by a call to
pcre[16|32]_exec() with a pattern that has been successfully compiled with JIT optimiza‐
tion. The arguments are:
extra the data pointer returned by pcre[16|32]_study()
callback a callback function
data a JIT stack or a value to be passed to the callback
function
If callback is NULL and data is NULL, an internal 32K block on the machine stack is used.
If callback is NULL and data is not NULL, data must be a valid JIT stack, the result of
calling pcre[16|32]_jit_stack_alloc().
If callback not NULL, it is called with data as an argument at the start of matching, in
order to set up a JIT stack. If the result is NULL, the internal 32K stack is used; other‐
wise the return value must be a valid JIT stack, the result of calling
pcre[16|32]_jit_stack_alloc().
You may safely assign the same JIT stack to multiple patterns, as long as they are all
matched in the same thread. In a multithread application, each thread must use its own JIT
stack. For more details, see the pcrejit page.
There is a complete description of the PCRE native API in the pcreapi page and a descrip‐
tion of the POSIX API in the pcreposix page.
PCRE 8.30 24 June 2012 PCRE_ASSIGN_JIT_STACK(3)
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