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<html>
<head>
<title>pcre2_jit_compile specification</title>
</head>
<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
<h1>pcre2_jit_compile 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>int pcre2_jit_compile(pcre2_code *<i>code</i>, uint32_t <i>options</i>);</b>
</P>
<br><b>
DESCRIPTION
</b><br>
<P>
This function requests JIT compilation, which, if the just-in-time compiler is
available, further processes a compiled pattern into machine code that executes
much faster than the <b>pcre2_match()</b> interpretive matching function. Full
details are given in the
<a href="pcre2jit.html"><b>pcre2jit</b></a>
documentation.
</P>
<P>
The availability of JIT support can be tested by calling
<b>pcre2_compile_jit()</b> with a single option PCRE2_JIT_TEST_ALLOC (the
code argument is ignored, so a NULL value is accepted). Such a call
returns zero if JIT is available and has a working allocator. Otherwise
it returns PCRE2_ERROR_NOMEMORY if JIT is available but cannot allocate
executable memory, or PCRE2_ERROR_JIT_UNSUPPORTED if JIT support is not
compiled.
</P>
<P>
Otherwise, the first argument must be a pointer that was returned by a
successful call to <b>pcre2_compile()</b>, and the second must contain one or
more of the following bits:
<pre>
PCRE2_JIT_COMPLETE compile code for full matching
PCRE2_JIT_PARTIAL_SOFT compile code for soft partial matching
PCRE2_JIT_PARTIAL_HARD compile code for hard partial matching
</pre>
There is also an obsolete option called PCRE2_JIT_INVALID_UTF, which has been
superseded by the <b>pcre2_compile()</b> option PCRE2_MATCH_INVALID_UTF. The old
option is deprecated and may be removed in the future.
</P>
<P>
The yield of the function when called with any of the three options above is 0
for success, or a negative error code otherwise. In particular,
PCRE2_ERROR_JIT_BADOPTION is returned if JIT is not supported or if an unknown
bit is set in <i>options</i>. The function can also return PCRE2_ERROR_NOMEMORY
if JIT is unable to allocate executable memory for the compiler, even if it was
because of a system security restriction. In a few cases, the function may
return with PCRE2_ERROR_JIT_UNSUPPORTED for unsupported features.
</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>
|
