/******************************************************************************

*

* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at:

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*

******************************************************************************/

/*****************************************************************************/

/*                                                                           */

/*  File Name         : ithread.c                                            */

/*                                                                           */

/*  Description       : Contains abstraction for threads, mutex and semaphores*/

/*                                                                           */

/*  List of Functions :                                                      */

/*                                                                           */

/*  Issues / Problems : None                                                 */

/*                                                                           */

/*  Revision History  :                                                      */

/*                                                                           */

/*         DD MM YYYY   Author(s)       Changes                              */

/*         07 09 2012   Harish          Initial Version                      */

/*****************************************************************************/

/*****************************************************************************/

/* File Includes                                                             */

/*****************************************************************************/

#include <string.h>

#include "ihevc_typedefs.h"

#include "ithread.h"

#include <sys/types.h>

//#define PTHREAD_AFFINITY

//#define SYSCALL_AFFINITY

#ifdef PTHREAD_AFFINITY

#define _GNU_SOURCE

#define __USE_GNU

#endif

#include <pthread.h>

#include <sched.h>

#include <semaphore.h>

#include <unistd.h>

UWORD32 ithread_get_handle_size(void)

{

    return sizeof(pthread_t);

}

UWORD32 ithread_get_mutex_lock_size(void)

{

    return sizeof(pthread_mutex_t);

}

WORD32 ithread_create(void *thread_handle, void *attribute, void *strt, void *argument)

{

    return pthread_create((pthread_t *)thread_handle, attribute, (void * (*)(void *))strt, argument);

}

WORD32 ithread_join(void *thread_handle, void **val_ptr)

{

    pthread_t *pthread_handle   = (pthread_t *)thread_handle;

    return pthread_join(*pthread_handle, val_ptr);

}

void ithread_exit(void *val_ptr)

{

    return pthread_exit(val_ptr);

}

WORD32 ithread_get_mutex_struct_size(void)

{

    return (sizeof(pthread_mutex_t));

}

WORD32 ithread_mutex_init(void *mutex)

{

    return pthread_mutex_init((pthread_mutex_t *)mutex, NULL);

}

WORD32 ithread_mutex_destroy(void *mutex)

{

    return pthread_mutex_destroy((pthread_mutex_t *)mutex);

}

WORD32 ithread_mutex_lock(void *mutex)

{

    return pthread_mutex_lock((pthread_mutex_t *)mutex);

}

WORD32 ithread_mutex_unlock(void *mutex)

{

    return pthread_mutex_unlock((pthread_mutex_t *)mutex);

}

void ithread_yield(void)

{

    sched_yield();

}

void ithread_sleep(UWORD32 u4_time)

{

    usleep(u4_time * 1000 * 1000);

}

void ithread_msleep(UWORD32 u4_time_ms)

{

    usleep(u4_time_ms * 1000);

}

void ithread_usleep(UWORD32 u4_time_us)

{

    usleep(u4_time_us);

}

UWORD32 ithread_get_sem_struct_size(void)

{

    return (sizeof(sem_t));

}

WORD32 ithread_sem_init(void *sem, WORD32 pshared, UWORD32 value)

{

    return sem_init((sem_t *)sem, pshared, value);

}

WORD32 ithread_sem_post(void *sem)

{

    return sem_post((sem_t *)sem);

}

WORD32 ithread_sem_wait(void *sem)

{

    return sem_wait((sem_t *)sem);

}

WORD32 ithread_sem_destroy(void *sem)

{

    return sem_destroy((sem_t *)sem);

}

WORD32 ithread_set_affinity(WORD32 core_id)

{

#ifdef PTHREAD_AFFINITY

    cpu_set_t cpuset;

    int num_cores = sysconf(_SC_NPROCESSORS_ONLN);

    pthread_t cur_thread = pthread_self();

    if(core_id >= num_cores)

        return -1;

    CPU_ZERO(&cpuset);

    CPU_SET(core_id, &cpuset);

    return pthread_setaffinity_np(cur_thread, sizeof(cpu_set_t), &cpuset);

#elif SYSCALL_AFFINITY

    WORD32 i4_sys_res;

    pid_t pid = gettid();

    i4_sys_res = syscall(__NR_sched_setaffinity, pid, sizeof(i4_mask), &i4_mask);

    if(i4_sys_res)

    {

        //WORD32 err;

        //err = errno;

        //perror("Error in setaffinity syscall PERROR : ");

        //LOG_ERROR("Error in the syscall setaffinity: mask=0x%x err=0x%x", i4_mask, i4_sys_res);

        return -1;

    }

#endif

    return core_id;

}

WORD32 ithread_get_cond_struct_size(void)

{

    return (sizeof(pthread_cond_t));

}

WORD32 ithread_cond_init(void *cond)

{

    return pthread_cond_init((pthread_cond_t *)cond, NULL);

}

WORD32 ithread_cond_destroy(void *cond)

{

    return pthread_cond_destroy((pthread_cond_t *)cond);

}

WORD32 ithread_cond_wait(void *cond, void *mutex)

{

    return pthread_cond_wait((pthread_cond_t *)cond, (pthread_mutex_t *)mutex);

}

WORD32 ithread_cond_signal(void *cond)

{

    return pthread_cond_signal((pthread_cond_t *)cond);

}