summaryrefslogtreecommitdiff
path: root/legacy/eina/src/lib/eina_main.c
blob: 41a6af0952a36dcaeb249400d545689a0484b284 (plain)
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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
/* EINA - EFL data type library
 * Copyright (C) 2008 Cedric Bail
 *
 * This library 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 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library;
 * if not, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#ifdef EFL_HAVE_PTHREAD
# include <pthread.h>
#endif

#include "eina_config.h"
#include "eina_private.h"
#include "eina_types.h"
#include "eina_main.h"
#include "eina_error.h"
#include "eina_log.h"
#include "eina_hash.h"
#include "eina_stringshare.h"
#include "eina_list.h"
#include "eina_matrixsparse.h"
#include "eina_array.h"
#include "eina_counter.h"
#include "eina_benchmark.h"
#include "eina_magic.h"
#include "eina_rectangle.h"
#include "eina_safety_checks.h"

static Eina_Version _version = { VMAJ, VMIN, VMIC, VREV };
EAPI Eina_Version *eina_version = &_version;;

/*============================================================================*
 *                                  Local                                     *
 *============================================================================*/

/**
 * @cond LOCAL
 */

static int _eina_main_count = 0;
#ifdef EFL_HAVE_PTHREAD
static int _eina_main_thread_count = 0;
#endif
static int _eina_log_dom = -1;

#ifdef ERR
#undef ERR
#endif
#define ERR(...) EINA_LOG_DOM_ERR(_eina_log_dom, __VA_ARGS__)

#ifdef DBG
#undef DBG
#endif
#define DBG(...) EINA_LOG_DOM_DBG(_eina_log_dom, __VA_ARGS__)

#ifdef EFL_HAVE_PTHREAD
static Eina_Bool _threads_activated = EINA_FALSE;
static pthread_mutex_t _mutex = PTHREAD_MUTEX_INITIALIZER;
#define LOCK() if(_threads_activated) pthread_mutex_lock(&_mutex)
#define UNLOCK() if(_threads_activated) pthread_mutex_unlock(&_mutex)
#define UNLOCK_FORCE() pthread_mutex_unlock(&_mutex)
#else
#define LOCK() do {} while (0)
#define UNLOCK() do {} while (0)
#define UNLOCK_FORCE() do {} while (0)
#endif

/* place module init/shutdown functions here to avoid other modules
 * calling them by mistake.
 */
#define S(x) extern Eina_Bool eina_##x##_init(void); extern Eina_Bool eina_##x##_shutdown(void)
S(log);
S(error);
S(safety_checks);
S(magic_string);
S(iterator);
S(accessor);
S(array);
S(module);
S(mempool);
S(list);
S(stringshare);
S(matrixsparse);
S(convert);
S(counter);
S(benchmark);
S(rectangle);
S(strbuf);
S(quadtree);
#undef S

struct eina_desc_setup
{
   const char *name;
   Eina_Bool (*init)(void);
   Eina_Bool (*shutdown)(void);
};

static const struct eina_desc_setup _eina_desc_setup[] = {
#define S(x) {#x, eina_##x##_init, eina_##x##_shutdown}
  /* log is a special case as it needs printf */
  S(error),
  S(safety_checks),
  S(magic_string),
  S(iterator),
  S(accessor),
  S(array),
  S(module),
  S(mempool),
  S(list),
  S(stringshare),
  S(matrixsparse),
  S(convert),
  S(counter),
  S(benchmark),
  S(rectangle),
  S(strbuf),
  S(quadtree)
#undef S
};
static const size_t _eina_desc_setup_len = sizeof(_eina_desc_setup) / sizeof(_eina_desc_setup[0]);

static void
_eina_shutdown_from_desc(const struct eina_desc_setup *itr)
{
   for (itr--; itr >= _eina_desc_setup; itr--)
     {
	if (!itr->shutdown())
	  ERR("Problems shutting down eina module '%s', ignored.", itr->name);
     }

   eina_log_domain_unregister(_eina_log_dom);
   _eina_log_dom = -1;
   eina_log_shutdown();
}

/**
 * @endcond
 */

/*============================================================================*
 *                                 Global                                     *
 *============================================================================*/

/*============================================================================*
 *                                   API                                      *
 *============================================================================*/

/**
 * @addtogroup Eina_Main_Group Main
 *
 * @brief These functions provide general initialisation and shut down
 * functions.
 *
 * @{
 */

/**
 * @brief Initialize the Eina library.
 *
 * @return 1 or greater on success, 0 on error.
 *
 * This function sets up all the eina modules. It returns 0 on
 * failure (that is, when one of the module fails to initialize),
 * otherwise it returns the number of times it has already been
 * called.
 *
 * When Eina is not used anymore, call eina_shutdown() to shut down
 * the Eina library.
 */
EAPI int
eina_init(void)
{
   const struct eina_desc_setup *itr, *itr_end;

   if (EINA_LIKELY(_eina_main_count > 0))
     return ++_eina_main_count;

   if (!eina_log_init())
     {
	fprintf(stderr, "Could not initialize eina logging system.\n");
	return 0;
     }
   _eina_log_dom = eina_log_domain_register("eina", EINA_LOG_COLOR_DEFAULT);
   if (_eina_log_dom < 0)
     {
	EINA_LOG_ERR("Could not register log domain: eina");
	eina_log_shutdown();
	return 0;
     }

   itr = _eina_desc_setup;
   itr_end = itr + _eina_desc_setup_len;
   for (; itr < itr_end; itr++)
     {
	if (!itr->init())
	  {
	     ERR("Could not initialize eina module '%s'.", itr->name);
	     _eina_shutdown_from_desc(itr);
	     return 0;
	  }
     }

   _eina_main_count = 1;
   return 1;
}

/**
 * @brief Shut down the Eina library.
 *
 * @return 0 when all the modules is completely shut down, 1 or
 * greater otherwise.
 *
 * This function shuts down the Eina library. It returns 0 when it has
 * been called the same number of times than eina_init(). In that case
 * it shut down all the Eina modules.
 *
 * Once this function succeeds (that is, @c 0 is returned), you must
 * not call any of the Eina function anymore. You must call
 * eina_init() again to use the Eina functions again.
 */
EAPI int
eina_shutdown(void)
{
   _eina_main_count--;
   if (EINA_UNLIKELY(_eina_main_count == 0))
     _eina_shutdown_from_desc(_eina_desc_setup + _eina_desc_setup_len);
   return _eina_main_count;
}


/**
 * @brief Initialize the mutexs of the Eina library.
 *
 * @return 1 or greater on success, 0 on error.
 *
 * This function sets up all the mutexs in all eina modules. It returns 0 on
 * failure (that is, when one of the module fails to initialize),
 * otherwise it returns the number of times it has already been
 * called.
 *
 * When the mutexs are not used anymore, call eina_thread_shutdown() to shut down
 * the mutexs.
 */
EAPI int
eina_threads_init(void)
{
#ifdef EFL_HAVE_PTHREAD
    int ret;
    
    LOCK();
    ++_eina_main_thread_count;
    ret = _eina_main_thread_count;

    if(_eina_main_thread_count > 1) 
    {
        UNLOCK();
        return ret;
    }

    eina_stringshare_threads_init();
    eina_log_threads_init();
    _threads_activated = EINA_TRUE;

    return ret;
#else
    return 0;
#endif
}

/**
 * @brief Shut down mutexs in the Eina library.
 *
 * @return 0 when all mutexs are completely shut down, 1 or
 * greater otherwise.
 *
 * This function shuts down the mutexs in the Eina library. It returns 0 when it has
 * been called the same number of times than eina_thread_init(). In that case
 * it shut down all the mutexs.
 *
 * Once this function succeeds (that is, @c 0 is returned), you must
 * not call any of the Eina function in a thread anymore. You must call
 * eina_thread_init() again to use the Eina functions in a thread again.
 */
EAPI int
eina_threads_shutdown(void)
{
#ifdef EFL_HAVE_PTHREAD
    int ret;

    LOCK();
    ret = --_eina_main_thread_count;
    if(_eina_main_thread_count > 0) 
    {
        UNLOCK();
        return ret; 
    }

    eina_stringshare_threads_shutdown();
    eina_log_threads_shutdown();

    _threads_activated = EINA_FALSE;

    UNLOCK_FORCE();

    return ret;
#else
    return 0;
#endif
}

/**
 * @}
 */