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/* EINA - EFL data type library
* Copyright (C) 2012 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/>.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include "eina_config.h"
#include "eina_thread.h"
#include "eina_sched.h"
#include "eina_cpu.h"
/* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */
#include "eina_safety_checks.h"
#include "eina_debug.h"
# include <pthread.h>
# include <errno.h>
#ifdef EINA_HAVE_PTHREAD_AFFINITY
#ifndef __linux__
#include <pthread_np.h>
#define cpu_set_t cpuset_t
#endif
#endif
static inline void *
_eina_thread_join(Eina_Thread t)
{
void *ret = NULL;
int err = pthread_join((pthread_t)t, &ret);
if (err == 0) return ret;
return NULL;
}
static inline Eina_Bool
_eina_thread_create(Eina_Thread *t, int affinity, void *(*func)(void *data), void *data)
{
int err;
pthread_attr_t attr;
pthread_attr_init(&attr);
if (affinity >= 0)
{
#ifdef EINA_HAVE_PTHREAD_AFFINITY
cpu_set_t cpu;
int cpunum;
cpunum = eina_cpu_count();
CPU_ZERO(&cpu);
CPU_SET(affinity % cpunum, &cpu);
pthread_attr_setaffinity_np(&attr, sizeof(cpu), &cpu);
#endif
}
/* setup initial locks */
err = pthread_create((pthread_t *)t, &attr, func, data);
pthread_attr_destroy(&attr);
if (err == 0) return EINA_TRUE;
return EINA_FALSE;
}
static inline Eina_Bool
_eina_thread_equal(Eina_Thread t1, Eina_Thread t2)
{
return pthread_equal((pthread_t)t1, (pthread_t)t2);
}
static inline Eina_Thread
_eina_thread_self(void)
{
return (Eina_Thread)pthread_self();
}
typedef struct _Eina_Thread_Call Eina_Thread_Call;
struct _Eina_Thread_Call
{
Eina_Thread_Cb func;
const void *data;
Eina_Thread_Priority prio;
int affinity;
};
static void *
_eina_internal_call(void *context)
{
Eina_Thread_Call *c = context;
void *r;
#ifdef EINA_HAVE_DEBUG
pthread_t self;
#endif
if (c->prio == EINA_THREAD_BACKGROUND ||
c->prio == EINA_THREAD_IDLE)
eina_sched_prio_drop();
#ifdef EINA_HAVE_DEBUG
self = pthread_self();
_eina_debug_thread_add(&self);
#endif
r = c->func((void*) c->data, eina_thread_self());
#ifdef EINA_HAVE_DEBUG
_eina_debug_thread_del(&self);
#endif
free(c);
return r;
}
EAPI Eina_Thread
eina_thread_self(void)
{
return _eina_thread_self();
}
EAPI Eina_Bool
eina_thread_equal(Eina_Thread t1, Eina_Thread t2)
{
return !!_eina_thread_equal(t1, t2);
}
EAPI Eina_Bool
eina_thread_create(Eina_Thread *t,
Eina_Thread_Priority prio, int affinity,
Eina_Thread_Cb func, const void *data)
{
Eina_Thread_Call *c;
EINA_SAFETY_ON_NULL_RETURN_VAL(t, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(func, EINA_FALSE);
c = malloc(sizeof (Eina_Thread_Call));
if (!c) return EINA_FALSE;
c->func = func;
c->data = data;
c->prio = prio;
c->affinity = affinity;
// valgrind complains c is lost - but it's not - it is handed to the
// child thread to be freed when c->func returns in _eina_internal_call().
if (_eina_thread_create(t, affinity, _eina_internal_call, c))
return EINA_TRUE;
free(c);
return EINA_FALSE;
}
EAPI void *
eina_thread_join(Eina_Thread t)
{
return _eina_thread_join(t);
}
EAPI Eina_Bool
eina_thread_name_set(Eina_Thread t, const char *name)
{
#ifdef EINA_HAVE_PTHREAD_SETNAME
char buf[16];
if (name)
{
strncpy(buf, name, 15);
buf[15] = 0;
}
else buf[0] = 0;
#ifndef __linux__
pthread_set_name_np((pthread_t)t, buf);
return EINA_TRUE;
#else
if (pthread_setname_np((pthread_t)t, buf) == 0) return EINA_TRUE;
#endif
#else
(void)t;
(void)name;
#endif
return EINA_FALSE;
}
Eina_Bool
eina_thread_init(void)
{
return EINA_TRUE;
}
Eina_Bool
eina_thread_shutdown(void)
{
return EINA_TRUE;
}
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