pcre_assign_jit_stack(3) — Linux manual page



NAME         top

       PCRE - Perl-compatible regular expressions

SYNOPSIS         top

       #include <pcre.h>

       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         top

       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

         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

       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

       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 pcrejit page.

       There is a complete description of the PCRE native API in the
       pcreapi page and a description of the POSIX API in the pcreposix

COLOPHON         top

       This page is part of the PCRE (Perl Compatible Regular
       Expressions) project.  Information about the project can be found
       at ⟨http://www.pcre.org/⟩.  If you have a bug report for this
       manual page, see
       ⟨http://bugs.exim.org/enter_bug.cgi?product=PCRE⟩.  This page was
       obtained from the tarball pcre-8.45.tar.gz fetched from
       ⟨ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/⟩ on
       2021-08-27.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-
       to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to

PCRE 8.30                     24 June 2012      PCRE_ASSIGN_JIT_STACK(3)