1 /* EINA - EFL data type library
2 * Copyright (C) 2008 Cedric Bail
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library;
16 * if not, see <http://www.gnu.org/licenses/>.
25 #ifdef EFL_HAVE_WIN32_THREADS
26 # define WIN32_LEAN_AND_MEAN
28 # undef WIN32_LEAN_AND_MEAN
31 #ifdef EFL_HAVE_THREADS
32 # ifdef HAVE_SYS_TYPES_H
33 # include <sys/types.h>
50 #include "eina_lock.h"
51 #include "eina_config.h"
52 #include "eina_private.h"
53 #include "eina_types.h"
54 #include "eina_main.h"
55 #include "eina_error.h"
57 #include "eina_hash.h"
58 #include "eina_binshare.h"
59 #include "eina_stringshare.h"
60 #include "eina_ustringshare.h"
61 #include "eina_list.h"
62 #include "eina_matrixsparse.h"
63 #include "eina_array.h"
64 #include "eina_counter.h"
65 #include "eina_benchmark.h"
66 #include "eina_magic.h"
67 #include "eina_rectangle.h"
68 #include "eina_safety_checks.h"
69 #include "eina_inlist.h"
71 /*============================================================================*
73 *============================================================================*/
79 static Eina_Version _version = { VMAJ, VMIN, VMIC, VREV };
81 static int _eina_main_count = 0;
82 #ifdef EFL_HAVE_THREADS
83 static int _eina_main_thread_count = 0;
85 static int _eina_log_dom = -1;
90 #define ERR(...) EINA_LOG_DOM_ERR(_eina_log_dom, __VA_ARGS__)
95 #define DBG(...) EINA_LOG_DOM_DBG(_eina_log_dom, __VA_ARGS__)
97 EAPI Eina_Bool _eina_threads_activated = EINA_FALSE;
98 EAPI Eina_Error EINA_ERROR_NOT_MAIN_LOOP = 0;
100 static const char EINA_ERROR_NOT_MAIN_LOOP_STR[] = "Main loop thread check failed.";
102 #ifdef EFL_HAVE_THREADS
104 EAPI DWORD _eina_main_loop;
106 EAPI pthread_t _eina_main_loop;
108 static pid_t _eina_pid;
112 static int _mt_enabled = 0;
115 #ifdef EFL_HAVE_THREADS
116 EAPI int _eina_threads_debug = 0;
117 EAPI Eina_Lock _eina_tracking_lock;
118 EAPI Eina_Inlist *_eina_tracking = NULL;
121 /* place module init/shutdown functions here to avoid other modules
122 * calling them by mistake.
124 #define S(x) extern Eina_Bool eina_ ## x ## _init(void); \
125 extern Eina_Bool eina_ ## x ## _shutdown(void)
152 struct eina_desc_setup
155 Eina_Bool (*init)(void);
156 Eina_Bool (*shutdown)(void);
159 static const struct eina_desc_setup _eina_desc_setup[] = {
160 #define S(x) {# x, eina_ ## x ## _init, eina_ ## x ## _shutdown}
161 /* log is a special case as it needs printf */
187 static const size_t _eina_desc_setup_len = sizeof(_eina_desc_setup) /
188 sizeof(_eina_desc_setup[0]);
191 _eina_shutdown_from_desc(const struct eina_desc_setup *itr)
193 for (itr--; itr >= _eina_desc_setup; itr--)
195 if (!itr->shutdown())
196 ERR("Problems shutting down eina module '%s', ignored.", itr->name);
199 eina_log_domain_unregister(_eina_log_dom);
208 /*============================================================================*
210 *============================================================================*/
213 /*============================================================================*
215 *============================================================================*/
219 * @brief Eina version (defined at configuration time)
221 EAPI Eina_Version *eina_version = &_version;
226 const struct eina_desc_setup *itr, *itr_end;
228 if (EINA_LIKELY(_eina_main_count > 0))
229 return ++_eina_main_count;
232 if ((getenv("EINA_MTRACE")) && (getenv("MALLOC_TRACE")))
239 if (!eina_log_init())
241 fprintf(stderr, "Could not initialize eina logging system.\n");
245 _eina_log_dom = eina_log_domain_register("eina", EINA_LOG_COLOR_DEFAULT);
246 if (_eina_log_dom < 0)
248 EINA_LOG_ERR("Could not register log domain: eina");
253 EINA_ERROR_NOT_MAIN_LOOP = eina_error_msg_static_register(
254 EINA_ERROR_NOT_MAIN_LOOP_STR);
256 #ifdef EFL_HAVE_THREADS
258 _eina_main_loop = GetCurrentThreadId();
260 _eina_main_loop = pthread_self();
262 _eina_pid = getpid();
265 #ifdef EINA_HAVE_DEBUG_THREADS
266 eina_lock_new(&_eina_tracking_lock);
268 if (getenv("EINA_DEBUG_THREADS"))
269 _eina_threads_debug = atoi(getenv("EINA_DEBUG_THREADS"));
272 itr = _eina_desc_setup;
273 itr_end = itr + _eina_desc_setup_len;
274 for (; itr < itr_end; itr++)
278 ERR("Could not initialize eina module '%s'.", itr->name);
279 _eina_shutdown_from_desc(itr);
284 _eina_main_count = 1;
292 if (EINA_UNLIKELY(_eina_main_count == 0))
294 _eina_shutdown_from_desc(_eina_desc_setup + _eina_desc_setup_len);
296 #ifdef EINA_HAVE_DEBUG_THREADS
297 eina_lock_free(&_eina_tracking_lock);
308 return _eina_main_count;
313 eina_threads_init(void)
315 #ifdef EFL_HAVE_THREADS
318 #ifdef EINA_HAVE_DEBUG_THREADS
319 assert(pthread_equal(_eina_main_loop, pthread_self()));
322 ++_eina_main_thread_count;
323 ret = _eina_main_thread_count;
325 if(_eina_main_thread_count > 1)
328 eina_share_common_threads_init();
329 eina_log_threads_init();
330 _eina_threads_activated = EINA_TRUE;
339 eina_threads_shutdown(void)
341 #ifdef EFL_HAVE_THREADS
344 #ifdef EINA_HAVE_DEBUG_THREADS
347 assert(pthread_equal(_eina_main_loop, pthread_self()));
348 assert(_eina_main_thread_count > 0);
351 ret = --_eina_main_thread_count;
352 if(_eina_main_thread_count > 0)
355 #ifdef EINA_HAVE_DEBUG_THREADS
356 eina_lock_take(&_eina_tracking_lock);
359 fprintf(stderr, "*************************\n");
360 fprintf(stderr, "* The IMPOSSIBLE HAPPEN *\n");
361 fprintf(stderr, "* LOCK STILL TAKEN : *\n");
362 fprintf(stderr, "*************************\n");
363 EINA_INLIST_FOREACH(_eina_tracking, lk)
365 fprintf(stderr, "*************************\n");
368 eina_lock_release(&_eina_tracking_lock);
371 eina_share_common_threads_shutdown();
372 eina_log_threads_shutdown();
374 _eina_threads_activated = EINA_FALSE;
383 eina_main_loop_is(void)
385 #ifdef EFL_HAVE_THREADS
386 pid_t pid = getpid();
389 if (pid != _eina_pid)
392 _eina_main_loop = GetCurrentThreadId();
395 if (_eina_main_loop == GetCurrentThreadId())
398 if (pid != _eina_pid)
400 /* This is in case of a fork, but don't like the solution */
402 _eina_main_loop = pthread_self();
406 if (pthread_equal(_eina_main_loop, pthread_self()))
413 /** The purpose of this API should not be documented, it is used only by the one who know what they are doing. */
415 eina_main_loop_define(void)
417 #ifdef EFL_HAVE_THREADS
418 _eina_pid = getpid();
420 _eina_main_loop = GetCurrentThreadId();
422 _eina_main_loop = pthread_self();