1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/* $Id: pool_policy_malloc.c 3553 2011-05-05 06:14:19Z nanang $ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pj/pool.h>
#include <pj/except.h>
#include <pj/os.h>
#include <pj/compat/malloc.h>
#if !PJ_HAS_POOL_ALT_API
/*
* This file contains pool default policy definition and implementation.
*/
#include "pool_signature.h"
static void *default_block_alloc(pj_pool_factory *factory, pj_size_t size)
{
void *p;
PJ_CHECK_STACK();
if (factory->on_block_alloc) {
int rc;
rc = factory->on_block_alloc(factory, size);
if (!rc)
return NULL;
}
p = malloc(size+(SIG_SIZE << 1));
if (p == NULL) {
if (factory->on_block_free)
factory->on_block_free(factory, size);
} else {
/* Apply signature when PJ_SAFE_POOL is set. It will move
* "p" pointer forward.
*/
APPLY_SIG(p, size);
}
return p;
}
static void default_block_free(pj_pool_factory *factory, void *mem,
pj_size_t size)
{
PJ_CHECK_STACK();
if (factory->on_block_free)
factory->on_block_free(factory, size);
/* Check and remove signature when PJ_SAFE_POOL is set. It will
* move "mem" pointer backward.
*/
REMOVE_SIG(mem, size);
/* Note that when PJ_SAFE_POOL is set, the actual size of the block
* is size + SIG_SIZE*2.
*/
free(mem);
}
static void default_pool_callback(pj_pool_t *pool, pj_size_t size)
{
PJ_CHECK_STACK();
PJ_UNUSED_ARG(pool);
PJ_UNUSED_ARG(size);
PJ_THROW(PJ_NO_MEMORY_EXCEPTION);
}
PJ_DEF_DATA(pj_pool_factory_policy) pj_pool_factory_default_policy =
{
&default_block_alloc,
&default_block_free,
&default_pool_callback,
0
};
PJ_DEF(const pj_pool_factory_policy*) pj_pool_factory_get_default_policy(void)
{
return &pj_pool_factory_default_policy;
}
#endif /* PJ_HAS_POOL_ALT_API */
|
