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| <title>pcre_assign_jit_stack specification</title> |
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| <h1>pcre_assign_jit_stack man page</h1> |
| <p> |
| Return to the <a href="index.html">PCRE index page</a>. |
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| <p> |
| 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. |
| <br> |
| <br><b> |
| SYNOPSIS |
| </b><br> |
| <P> |
| <b>#include <pcre.h></b> |
| </P> |
| <P> |
| <b>void pcre_assign_jit_stack(pcre_extra *<i>extra</i>,</b> |
| <b>pcre_jit_callback <i>callback</i>, void *<i>data</i>);</b> |
| </P> |
| <br><b> |
| DESCRIPTION |
| </b><br> |
| <P> |
| This function provides control over the memory used as a stack at runtime by a |
| call to <b>pcre_exec()</b> with a pattern that has been successfully compiled |
| with JIT optimization. The arguments are: |
| <pre> |
| extra the data pointer returned by <b>pcre_study()</b> |
| callback a callback function |
| data a JIT stack or a value to be passed to the callback |
| function |
| </PRE> |
| </P> |
| <P> |
| If <i>callback</i> is NULL and <i>data</i> is NULL, an internal 32K block on |
| the machine stack is used. |
| </P> |
| <P> |
| If <i>callback</i> is NULL and <i>data</i> is not NULL, <i>data</i> must |
| be a valid JIT stack, the result of calling <b>pcre_jit_stack_alloc()</b>. |
| </P> |
| <P> |
| If <i>callback</i> not NULL, it is called with <i>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>pcre_jit_stack_alloc()</b>. |
| </P> |
| <P> |
| 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"><b>pcrejit</b></a> |
| page. |
| </P> |
| <P> |
| There is a complete description of the PCRE native API in the |
| <a href="pcreapi.html"><b>pcreapi</b></a> |
| page and a description of the POSIX API in the |
| <a href="pcreposix.html"><b>pcreposix</b></a> |
| page. |
| <p> |
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