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| author | ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15> | 2011-09-23 10:32:53 +0000 |
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| committer | ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15> | 2011-09-23 10:32:53 +0000 |
| commit | f55f04ace02c98b0c3441c99ae9d93ed1712efa5 (patch) | |
| tree | 2ff4d168c8ecb57803467fcd45bb60548e7e311d /doc/pcrejit.3 | |
| parent | 1f7c50ca03b975a4adf278d85c6228d1a792748b (diff) | |
| download | pcre-f55f04ace02c98b0c3441c99ae9d93ed1712efa5.tar.gz | |
Documentation clarifications.
git-svn-id: svn://vcs.exim.org/pcre/code/trunk@707 2f5784b3-3f2a-0410-8824-cb99058d5e15
Diffstat (limited to 'doc/pcrejit.3')
| -rw-r--r-- | doc/pcrejit.3 | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/doc/pcrejit.3 b/doc/pcrejit.3 index 30d99c9..4620b6e 100644 --- a/doc/pcrejit.3 +++ b/doc/pcrejit.3 @@ -78,6 +78,9 @@ can find out if JIT execution is available after studying a pattern by calling JIT compilation was successful. A result of 0 means that JIT support is not available, or the pattern was not studied with PCRE_STUDY_JIT_COMPILE, or the JIT compiler was not able to handle the pattern. +.P +Once a pattern has been studied, with or without JIT, it can be used as many +times as you like for matching different subject strings. . . .SH "UNSUPPORTED OPTIONS AND PATTERN ITEMS" @@ -131,11 +134,17 @@ execution. .rs .sp The code that is generated by the JIT compiler is architecture-specific, and is -also position dependent. For those reasons it cannot be saved and restored like -the bytecode and other data of a compiled pattern. You should be able run -\fBpcre_study()\fP on a saved and restored pattern, and thereby recreate the -JIT data, but because JIT compilation uses significant resources, it is -probably not worth doing this. +also position dependent. For those reasons it cannot be saved (in a file or +database) and restored later like the bytecode and other data of a compiled +pattern. Saving and restoring compiled patterns is not something many people +do. More detail about this facility is given in the +.\" HREF +\fBpcreprecompile\fP +.\" +documentation. It should be possible to run \fBpcre_study()\fP on a saved and +restored pattern, and thereby recreate the JIT data, but because JIT +compilation uses significant resources, it is probably not worth doing this; +you might as well recompile the original pattern. . . .\" HTML <a name="stackcontrol"></a> @@ -256,6 +265,6 @@ Cambridge CB2 3QH, England. .rs .sp .nf -Last updated: 06 September 2011 +Last updated: 23 September 2011 Copyright (c) 1997-2011 University of Cambridge. .fi |