PCRE\_JIT\_STACK\_ALLOC(3) Library Functions Manual PCRE\_JIT\_STACK\_ALLOC(3)

# [NAME](#NAME)

PCRE - Perl-compatible regular expressions

# [SYNOPSIS](#SYNOPSIS)

**#include <pcre.h>**

```
pcre_jit_stack *pcre_jit_stack_alloc(int startsize,
     int maxsize);

pcre16_jit_stack *pcre16_jit_stack_alloc(int startsize,
     int maxsize);

pcre32_jit_stack *pcre32_jit_stack_alloc(int startsize,
     int maxsize);
```

# [DESCRIPTION](#DESCRIPTION)

This function is used to create a stack for use by the code compiled by the JIT optimization of **pcre\[16|32]\_study()**. The arguments are a starting size for the stack, and a maximum size to which it is allowed to grow. The result can be passed to the JIT run-time code by **pcre\[16|32]\_assign\_jit\_stack()**, or that function can set up a callback for obtaining a stack. A maximum stack size of 512K to 1M should be more than enough for any pattern. 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.

24 June 2012 PCRE 8.30

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Document: pcre32_jit_stack_alloc(3) from pcre 8.45-r11 (Chainguard OS)
Source: https://downloads.sourceforge.net/project/pcre/pcre/8.45/pcre-8.45.tar.bz2