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/**
* @file lv_pthread.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_os.h"
#if LV_USE_OS == LV_OS_PTHREAD
#include <errno.h>
#include "../misc/lv_log.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void * generic_callback(void * user_data);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_result_t lv_thread_init(lv_thread_t * thread, lv_thread_prio_t prio, void (*callback)(void *), size_t stack_size,
void * user_data)
{
LV_UNUSED(prio);
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setstacksize(&attr, stack_size);
thread->callback = callback;
thread->user_data = user_data;
pthread_create(&thread->thread, &attr, generic_callback, thread);
return LV_RESULT_OK;
}
lv_result_t lv_thread_delete(lv_thread_t * thread)
{
int ret = pthread_join(thread->thread, NULL);
if(ret != 0) {
LV_LOG_WARN("Error: %d", ret);
return LV_RESULT_INVALID;
}
return LV_RESULT_OK;
}
lv_result_t lv_mutex_init(lv_mutex_t * mutex)
{
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
int ret = pthread_mutex_init(mutex, &attr);
pthread_mutexattr_destroy(&attr);
if(ret) {
LV_LOG_WARN("Error: %d", ret);
return LV_RESULT_INVALID;
}
else {
return LV_RESULT_OK;
}
}
lv_result_t lv_mutex_lock(lv_mutex_t * mutex)
{
int ret = pthread_mutex_lock(mutex);
if(ret) {
LV_LOG_WARN("Error: %d", ret);
return LV_RESULT_INVALID;
}
else {
return LV_RESULT_OK;
}
}
lv_result_t lv_mutex_lock_isr(lv_mutex_t * mutex)
{
int ret = pthread_mutex_lock(mutex);
if(ret) {
LV_LOG_WARN("Error: %d", ret);
return LV_RESULT_INVALID;
}
else {
return LV_RESULT_OK;
}
}
lv_result_t lv_mutex_unlock(lv_mutex_t * mutex)
{
int ret = pthread_mutex_unlock(mutex);
if(ret) {
LV_LOG_WARN("Error: %d", ret);
return LV_RESULT_INVALID;
}
else {
return LV_RESULT_OK;
}
}
lv_result_t lv_mutex_delete(lv_mutex_t * mutex)
{
pthread_mutex_destroy(mutex);
return LV_RESULT_OK;
}
lv_result_t lv_thread_sync_init(lv_thread_sync_t * sync)
{
pthread_mutex_init(&sync->mutex, 0);
pthread_cond_init(&sync->cond, 0);
sync->v = false;
return LV_RESULT_OK;
}
lv_result_t lv_thread_sync_wait(lv_thread_sync_t * sync)
{
pthread_mutex_lock(&sync->mutex);
while(!sync->v) {
pthread_cond_wait(&sync->cond, &sync->mutex);
}
sync->v = false;
pthread_mutex_unlock(&sync->mutex);
return LV_RESULT_OK;
}
lv_result_t lv_thread_sync_signal(lv_thread_sync_t * sync)
{
pthread_mutex_lock(&sync->mutex);
sync->v = true;
pthread_cond_signal(&sync->cond);
pthread_mutex_unlock(&sync->mutex);
return LV_RESULT_OK;
}
lv_result_t lv_thread_sync_delete(lv_thread_sync_t * sync)
{
pthread_mutex_destroy(&sync->mutex);
pthread_cond_destroy(&sync->cond);
return LV_RESULT_OK;
}
lv_result_t lv_thread_sync_signal_isr(lv_thread_sync_t * sync)
{
LV_UNUSED(sync);
return LV_RESULT_INVALID;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void * generic_callback(void * user_data)
{
lv_thread_t * thread = user_data;
thread->callback(thread->user_data);
return NULL;
}
#endif /*LV_USE_OS == LV_OS_PTHREAD*/
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