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<html>
<head>
<title>pcre_assign_jit_stack specification</title>
</head>
<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
<h1>pcre_assign_jit_stack man page</h1>

Return to the <a href="index.html">PCRE index page</a>.


This page is part of the PCRE HTML documentation. It was generated automatically
from the original man page. If there is any nonsense in it, please consult the
man page, in case the conversion went wrong.
 
 
SYNOPSIS
 

#include &#60;pcre.h&#62;


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 optimization. The arguments are:
<pre>
 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
</PRE>


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; otherwise 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
<a href="pcrejit.html">pcrejit</a>
page.


There is a complete description of the PCRE native API in the
<a href="pcreapi.html">pcreapi</a>
page and a description of the POSIX API in the
<a href="pcreposix.html">pcreposix</a>
page.

Return to the <a href="index.html">PCRE index page</a>.

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