PCRE_ASSIGN_JIT_STACK(3)				     Library Functions Manual					  PCRE_ASSIGN_JIT_STACK(3)

NAME

       PCRE - Perl-compatible regular expressions

SYNOPSIS


       #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


       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 are:

	 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
		     function

       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
       pcre[16|32]_jit_stack_alloc().

       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  appli-
       cation, 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 page.

PCRE 8.30							   24 June 2012 					  PCRE_ASSIGN_JIT_STACK(3)