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| <title>pcre2_jit_stack_assign specification</title> |
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| <body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB"> |
| <h1>pcre2_jit_stack_assign man page</h1> |
| <p> |
| Return to the <a href="index.html">PCRE2 index page</a>. |
| </p> |
| <p> |
| This page is part of the PCRE2 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. |
| <br> |
| <br><b> |
| SYNOPSIS |
| </b><br> |
| <P> |
| <b>#include <pcre2.h></b> |
| </P> |
| <P> |
| <b>void pcre2_jit_stack_assign(pcre2_match_context *<i>mcontext</i>,</b> |
| <b> pcre2_jit_callback <i>callback_function</i>, void *<i>callback_data</i>);</b> |
| </P> |
| <br><b> |
| DESCRIPTION |
| </b><br> |
| <P> |
| This function provides control over the memory used by JIT as a run-time stack |
| when <b>pcre2_match()</b> or <b>pcre2_jit_match()</b> is called with a pattern |
| that has been successfully processed by the JIT compiler. The information that |
| determines which stack is used is put into a match context that is subsequently |
| passed to a matching function. The arguments of this function are: |
| <pre> |
| mcontext a pointer to a match context |
| callback a callback function |
| callback_data a JIT stack or a value to be passed to the callback |
| </PRE> |
| </P> |
| <P> |
| If <i>callback</i> is NULL and <i>callback_data</i> is NULL, an internal 32K |
| block on the machine stack is used. |
| </P> |
| <P> |
| If <i>callback</i> is NULL and <i>callback_data</i> is not NULL, |
| <i>callback_data</i> must be a valid JIT stack, the result of calling |
| <b>pcre2_jit_stack_create()</b>. |
| </P> |
| <P> |
| If <i>callback</i> not NULL, it is called with <i>callback_data</i> 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 <b>pcre2_jit_stack_create()</b>. |
| </P> |
| <P> |
| You may safely use the same JIT stack for 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="pcre2jit.html"><b>pcre2jit</b></a> |
| page. |
| </P> |
| <P> |
| There is a complete description of the PCRE2 native API in the |
| <a href="pcre2api.html"><b>pcre2api</b></a> |
| page and a description of the POSIX API in the |
| <a href="pcre2posix.html"><b>pcre2posix</b></a> |
| page. |
| <p> |
| Return to the <a href="index.html">PCRE2 index page</a>. |
| </p> |
