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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/*
* The internal pool functions
*
* Copyright (C) 2009-2018, Joachim Metz <joachim.metz@gmail.com>
*
* Refer to AUTHORS for acknowledgements.
*
* This software is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This software 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 Lesser General Public License
* along with this software. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined( _LIBBFIO_POOL_H )
#define _LIBBFIO_POOL_H
#include <common.h>
#include <types.h>
#include "libbfio_extern.h"
#include "libbfio_libcdata.h"
#include "libbfio_libcerror.h"
#include "libbfio_libcthreads.h"
#include "libbfio_types.h"
#if defined( __cplusplus )
extern "C" {
#endif
typedef struct libbfio_internal_pool libbfio_internal_pool_t;
struct libbfio_internal_pool
{
/* The number of used handles in the pool
*/
int number_of_used_handles;
/* The number of open handles in the pool
*/
int number_of_open_handles;
/* The maximum number of open handles in the pool
*/
int maximum_number_of_open_handles;
/* The handles array
*/
libcdata_array_t *handles_array;
/* A list containing the file IO handles in order of the last use
* it starts with the last used at the beginning of the list
* the value of the list element refers to the corresponding file IO handle
*/
libcdata_list_t *last_used_list;
#if defined( HAVE_MULTI_THREAD_SUPPORT ) && !defined( HAVE_LOCAL_LIBBFIO )
/* The read/write lock
*/
libcthreads_read_write_lock_t *read_write_lock;
#endif
};
LIBBFIO_EXTERN \
int libbfio_pool_initialize(
libbfio_pool_t **pool,
int number_of_handles,
int maximum_number_of_open_handles,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_free(
libbfio_pool_t **pool,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_clone(
libbfio_pool_t **destination_pool,
libbfio_pool_t *source_pool,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_resize(
libbfio_pool_t *pool,
int number_of_handles,
libcerror_error_t **error );
int libbfio_internal_pool_open_handle(
libbfio_internal_pool_t *internal_pool,
libbfio_handle_t *handle,
int access_flags,
libcerror_error_t **error );
int libbfio_internal_pool_append_handle_to_last_used_list(
libbfio_internal_pool_t *internal_pool,
libbfio_handle_t *handle,
libcerror_error_t **error );
int libbfio_internal_pool_move_handle_to_front_of_last_used_list(
libbfio_internal_pool_t *internal_pool,
libbfio_handle_t *handle,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_get_number_of_handles(
libbfio_pool_t *pool,
int *number_of_handles,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_get_handle(
libbfio_pool_t *pool,
int entry,
libbfio_handle_t **handle,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_append_handle(
libbfio_pool_t *pool,
int *entry,
libbfio_handle_t *handle,
int access_flags,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_set_handle(
libbfio_pool_t *pool,
int entry,
libbfio_handle_t *handle,
int access_flags,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_remove_handle(
libbfio_pool_t *pool,
int entry,
libbfio_handle_t **handle,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_get_maximum_number_of_open_handles(
libbfio_pool_t *pool,
int *maximum_number_of_open_handles,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_set_maximum_number_of_open_handles(
libbfio_pool_t *pool,
int maximum_number_of_open_handles,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_open(
libbfio_pool_t *pool,
int entry,
int access_flags,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_reopen(
libbfio_pool_t *pool,
int entry,
int access_flags,
libcerror_error_t **error );
int libbfio_internal_pool_close(
libbfio_internal_pool_t *internal_pool,
int entry,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_close(
libbfio_pool_t *pool,
int entry,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_close_all(
libbfio_pool_t *pool,
libcerror_error_t **error );
LIBBFIO_EXTERN \
ssize_t libbfio_pool_read_buffer(
libbfio_pool_t *pool,
int entry,
uint8_t *buffer,
size_t size,
libcerror_error_t **error );
LIBBFIO_EXTERN \
ssize_t libbfio_pool_write_buffer(
libbfio_pool_t *pool,
int entry,
const uint8_t *buffer,
size_t size,
libcerror_error_t **error );
LIBBFIO_EXTERN \
off64_t libbfio_pool_seek_offset(
libbfio_pool_t *pool,
int entry,
off64_t offset,
int whence,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_get_offset(
libbfio_pool_t *pool,
int entry,
off64_t *offset,
libcerror_error_t **error );
LIBBFIO_EXTERN \
int libbfio_pool_get_size(
libbfio_pool_t *pool,
int entry,
size64_t *size,
libcerror_error_t **error );
#if defined( __cplusplus )
}
#endif
#endif /* !defined( _LIBBFIO_POOL_H ) */
|
