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pthread: handle statically initialized mutexes

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This commit is contained in:
Ivan Grokhotkov 2017-09-01 12:31:04 +08:00
parent 20942421c3
commit e3b86e7bdb
1 changed files with 23 additions and 1 deletions
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24
components/pthread/pthread.c
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@ -42,6 +42,7 @@ typedef struct {
static SemaphoreHandle_t s_once_mux = NULL;
static SemaphoreHandle_t s_threads_mux = NULL;
static portMUX_TYPE s_mutex_init_lock = portMUX_INITIALIZER_UNLOCKED;
static List_t s_threads_list;
@ -356,7 +357,8 @@ int pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
TaskHandle_t cur_task = xTaskGetCurrentTaskHandle();
// do not take mutex if OS is not running yet
if (!cur_task || xSemaphoreTake(s_once_mux, portMAX_DELAY) == pdTRUE)
if (xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED ||
!cur_task || xSemaphoreTake(s_once_mux, portMAX_DELAY) == pdTRUE)
{
if (!once_control->init_executed) {
ESP_LOGV(TAG, "%s: call init_routine %p", __FUNCTION__, once_control);
@ -472,12 +474,28 @@ static int IRAM_ATTR pthread_mutex_lock_internal(esp_pthread_mutex_t *mux, TickT
return 0;
}
static int pthread_mutex_init_if_static(pthread_mutex_t *mutex) {
int res = 0;
if ((intptr_t) *mutex == PTHREAD_MUTEX_INITIALIZER) {
portENTER_CRITICAL(&s_mutex_init_lock);
if ((intptr_t) *mutex == PTHREAD_MUTEX_INITIALIZER) {
res = pthread_mutex_init(mutex, NULL);
}
portEXIT_CRITICAL(&s_mutex_init_lock);
}
return res;
}
int IRAM_ATTR pthread_mutex_lock(pthread_mutex_t *mutex)
{
if (!mutex) {
errno = EINVAL;
return EINVAL;
}
int res = pthread_mutex_init_if_static(mutex);
if (res != 0) {
return res;
}
return pthread_mutex_lock_internal((esp_pthread_mutex_t *)*mutex, portMAX_DELAY);
}
@ -487,6 +505,10 @@ int IRAM_ATTR pthread_mutex_trylock(pthread_mutex_t *mutex)
errno = EINVAL;
return EINVAL;
}
int res = pthread_mutex_init_if_static(mutex);
if (res != 0) {
return res;
}
return pthread_mutex_lock_internal((esp_pthread_mutex_t *)*mutex, 0);
}