1/*************************************************
2*      Perl-Compatible Regular Expressions       *
3*************************************************/
4
5/* PCRE is a library of functions to support regular expressions whose syntax
6and semantics are as close as possible to those of the Perl 5 language.
7
8                       Written by Philip Hazel
9           Copyright (c) 1997-2014 University of Cambridge
10
11-----------------------------------------------------------------------------
12Redistribution and use in source and binary forms, with or without
13modification, are permitted provided that the following conditions are met:
14
15    * Redistributions of source code must retain the above copyright notice,
16      this list of conditions and the following disclaimer.
17
18    * Redistributions in binary form must reproduce the above copyright
19      notice, this list of conditions and the following disclaimer in the
20      documentation and/or other materials provided with the distribution.
21
22    * Neither the name of the University of Cambridge nor the names of its
23      contributors may be used to endorse or promote products derived from
24      this software without specific prior written permission.
25
26THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
27AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
30LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36POSSIBILITY OF SUCH DAMAGE.
37-----------------------------------------------------------------------------
38*/
39
40
41/* This module contains global variables that are exported by the PCRE library.
42PCRE is thread-clean and doesn't use any global variables in the normal sense.
43However, it calls memory allocation and freeing functions via the four
44indirections below, and it can optionally do callouts, using the fifth
45indirection. These values can be changed by the caller, but are shared between
46all threads.
47
48For MS Visual Studio and Symbian OS, there are problems in initializing these
49variables to non-local functions. In these cases, therefore, an indirection via
50a local function is used.
51
52Also, when compiling for Virtual Pascal, things are done differently, and
53global variables are not used. */
54
55#ifdef HAVE_CONFIG_H
56#include "config.h"
57#endif
58
59#include "pcre_internal.h"
60
61#if defined _MSC_VER || defined  __SYMBIAN32__
62static void* LocalPcreMalloc(size_t aSize)
63  {
64  return malloc(aSize);
65  }
66static void LocalPcreFree(void* aPtr)
67  {
68  free(aPtr);
69  }
70PCRE_EXP_DATA_DEFN void *(*PUBL(malloc))(size_t) = LocalPcreMalloc;
71PCRE_EXP_DATA_DEFN void  (*PUBL(free))(void *) = LocalPcreFree;
72PCRE_EXP_DATA_DEFN void *(*PUBL(stack_malloc))(size_t) = LocalPcreMalloc;
73PCRE_EXP_DATA_DEFN void  (*PUBL(stack_free))(void *) = LocalPcreFree;
74PCRE_EXP_DATA_DEFN int   (*PUBL(callout))(PUBL(callout_block) *) = NULL;
75PCRE_EXP_DATA_DEFN int   (*PUBL(stack_guard))(void) = NULL;
76
77#elif !defined VPCOMPAT
78PCRE_EXP_DATA_DEFN void *(*PUBL(malloc))(size_t) = malloc;
79PCRE_EXP_DATA_DEFN void  (*PUBL(free))(void *) = free;
80PCRE_EXP_DATA_DEFN void *(*PUBL(stack_malloc))(size_t) = malloc;
81PCRE_EXP_DATA_DEFN void  (*PUBL(stack_free))(void *) = free;
82PCRE_EXP_DATA_DEFN int   (*PUBL(callout))(PUBL(callout_block) *) = NULL;
83PCRE_EXP_DATA_DEFN int   (*PUBL(stack_guard))(void) = NULL;
84#endif
85
86/* End of pcre_globals.c */
87