PCRE_ASSIGN_JIT_STACK(3) (24 June 2012)  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 opti-
          mization. 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 call-
          back
                        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; other-
          wise 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 pat-
          terns, 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 page.

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