forked from enlightenment/efl
172 lines
3.6 KiB
C
172 lines
3.6 KiB
C
/* EINA - EFL data type library
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* Copyright (C) 2012 Cedric Bail
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include "eina_config.h"
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#include "eina_thread.h"
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#include "eina_sched.h"
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/* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */
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#include "eina_safety_checks.h"
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# include <pthread.h>
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# include <errno.h>
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static inline void *
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_eina_thread_join(Eina_Thread t)
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{
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void *ret = NULL;
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int err = pthread_join((pthread_t)t, &ret);
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if (err == 0) return ret;
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return NULL;
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}
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static inline Eina_Bool
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_eina_thread_create(Eina_Thread *t, int affinity, void *(*func)(void *data), void *data)
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{
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int err;
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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if (affinity >= 0)
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{
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#ifdef EINA_HAVE_PTHREAD_AFFINITY
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cpu_set_t cpu;
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int cpunum;
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cpunum = eina_cpu_count();
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CPU_ZERO(&cpu);
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CPU_SET(affinity % cpunum, &cpu);
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pthread_attr_setaffinity_np(&attr, sizeof(cpu), &cpu);
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#endif
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}
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/* setup initial locks */
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err = pthread_create((pthread_t *)t, &attr, func, data);
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pthread_attr_destroy(&attr);
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if (err == 0) return EINA_TRUE;
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return EINA_FALSE;
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}
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static inline Eina_Bool
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_eina_thread_equal(Eina_Thread t1, Eina_Thread t2)
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{
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return pthread_equal((pthread_t)t1, (pthread_t)t2);
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}
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static inline Eina_Thread
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_eina_thread_self(void)
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{
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return (Eina_Thread)pthread_self();
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}
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typedef struct _Eina_Thread_Call Eina_Thread_Call;
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struct _Eina_Thread_Call
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{
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Eina_Thread_Cb func;
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const void *data;
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Eina_Thread_Priority prio;
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int affinity;
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};
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static void *
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_eina_internal_call(void *context)
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{
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Eina_Thread_Call *c = context;
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void *r;
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if (c->prio == EINA_THREAD_BACKGROUND ||
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c->prio == EINA_THREAD_IDLE)
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eina_sched_prio_drop();
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/* FIXME: set priority and affinity */
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r = c->func((void*) c->data, eina_thread_self());
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free(c);
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return r;
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}
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EAPI Eina_Thread
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eina_thread_self(void)
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{
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return _eina_thread_self();
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}
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EAPI Eina_Bool
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eina_thread_equal(Eina_Thread t1, Eina_Thread t2)
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{
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return !!_eina_thread_equal(t1, t2);
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}
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EAPI Eina_Bool
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eina_thread_create(Eina_Thread *t,
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Eina_Thread_Priority prio, int affinity,
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Eina_Thread_Cb func, const void *data)
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{
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Eina_Thread_Call *c;
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EINA_SAFETY_ON_NULL_RETURN_VAL(t, EINA_FALSE);
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EINA_SAFETY_ON_NULL_RETURN_VAL(func, EINA_FALSE);
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c = malloc(sizeof (Eina_Thread_Call));
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if (!c) return EINA_FALSE;
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c->func = func;
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c->data = data;
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c->prio = prio;
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c->affinity = affinity;
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// valgrind complains c is lost - but it's not - it is handed to the
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// child thread to be freed when c->func returns in _eina_internal_call().
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if (_eina_thread_create(t, affinity, _eina_internal_call, c))
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return EINA_TRUE;
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free(c);
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return EINA_FALSE;
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}
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EAPI void *
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eina_thread_join(Eina_Thread t)
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{
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return _eina_thread_join(t);
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}
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Eina_Bool
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eina_thread_init(void)
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{
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return EINA_TRUE;
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}
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Eina_Bool
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eina_thread_shutdown(void)
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{
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return EINA_TRUE;
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}
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