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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/* pool.c: pool wrappers for Subversion
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <apr.h>
#include <apr_version.h>
#include <apr_general.h>
#include <apr_pools.h>
#include "svn_pools.h"
#include "pools.h"
#if APR_POOL_DEBUG
/* file_line for the non-debug case. */
static const char SVN_FILE_LINE_UNDEFINED[] = "svn:<undefined>";
#endif /* APR_POOL_DEBUG */
/*-----------------------------------------------------------------*/
/* Pool allocation handler which just aborts, since we aren't generally
prepared to deal with out-of-memory errors.
*/
static int
abort_on_pool_failure(int retcode)
{
/* Don't translate this string! It requires memory allocation to do so!
And we don't have any of it... */
printf("libsvn: Out of memory - terminating application.\n");
#ifdef WIN32
/* Provide a way to distinguish the out-of-memory error from abort(). */
if (retcode == APR_ENOMEM)
RaiseException(STATUS_NO_MEMORY, EXCEPTION_NONCONTINUABLE, 0, NULL);
#endif
abort();
return 0; /* not reached */
}
#if APR_POOL_DEBUG
#undef svn_pool_create_ex
#endif /* APR_POOL_DEBUG */
#if !APR_POOL_DEBUG
apr_pool_t *
svn_pool_create_ex(apr_pool_t *parent_pool, apr_allocator_t *allocator)
{
apr_pool_t *pool;
apr_pool_create_ex(&pool, parent_pool, abort_on_pool_failure, allocator);
return pool;
}
/* Wrapper that ensures binary compatibility */
apr_pool_t *
svn_pool_create_ex_debug(apr_pool_t *pool, apr_allocator_t *allocator,
const char *file_line)
{
return svn_pool_create_ex(pool, allocator);
}
#else /* APR_POOL_DEBUG */
apr_pool_t *
svn_pool_create_ex_debug(apr_pool_t *parent_pool, apr_allocator_t *allocator,
const char *file_line)
{
apr_pool_t *pool;
apr_pool_create_ex_debug(&pool, parent_pool, abort_on_pool_failure,
allocator, file_line);
return pool;
}
/* Wrapper that ensures binary compatibility */
apr_pool_t *
svn_pool_create_ex(apr_pool_t *pool, apr_allocator_t *allocator)
{
return svn_pool_create_ex_debug(pool, allocator, SVN_FILE_LINE_UNDEFINED);
}
#endif /* APR_POOL_DEBUG */
apr_allocator_t *
svn_pool_create_allocator(svn_boolean_t thread_safe)
{
apr_allocator_t *allocator;
apr_pool_t *pool;
/* create the allocator and limit it's internal free list to keep
* memory usage in check */
if (apr_allocator_create(&allocator))
abort_on_pool_failure(EXIT_FAILURE);
apr_allocator_max_free_set(allocator, SVN_ALLOCATOR_RECOMMENDED_MAX_FREE);
/* create the root pool */
pool = svn_pool_create_ex(NULL, allocator);
apr_allocator_owner_set(allocator, pool);
#if APR_POOL_DEBUG
apr_pool_tag (pool, "svn root pool");
#endif
/* By default, allocators are *not* thread-safe. We must provide a mutex
* if we want thread-safety for that pool. */
#if APR_HAS_THREADS
if (thread_safe)
{
apr_thread_mutex_t *mutex;
apr_thread_mutex_create(&mutex, APR_THREAD_MUTEX_DEFAULT, pool);
apr_allocator_mutex_set(allocator, mutex);
}
#endif
/* better safe than sorry */
SVN_ERR_ASSERT_NO_RETURN(allocator != NULL);
return allocator;
}
/*
* apr_pool_create_core_ex was introduced in APR 1.3.0, then
* deprecated and renamed to apr_pool_create_unmanaged_ex in 1.3.3.
* Since our minimum requirement is APR 1.3.0, one or the other of
* these functions will always be available.
*/
#if !APR_VERSION_AT_LEAST(1,3,3)
#define apr_pool_create_unmanaged_ex apr_pool_create_core_ex
#endif
/* Private function that creates an unmanaged pool. */
apr_pool_t *
svn_pool__create_unmanaged(svn_boolean_t thread_safe)
{
apr_pool_t *pool;
apr_pool_create_unmanaged_ex(&pool, abort_on_pool_failure,
svn_pool_create_allocator(thread_safe));
return pool;
}
|
