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Merge "added timer stop api"

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Linux Build Service Account 2013-12-03 14:08:34 -08:00 committed by Gerrit - the friendly Code Review server
commit a4d2fca86b
2 changed files with 114 additions and 76 deletions
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173
utils/loc_timer.c
View file

@ -34,124 +34,153 @@
#include<time.h>
#include<errno.h>
#define MAX_DELAY_RETRIES 3
enum timer_state {
READY = 100,
WAITING,
DONE,
ABORT
};
typedef struct {
loc_timer_callback callback_func;
void *user_data;
unsigned int time_msec;
pthread_cond_t timer_cond;
pthread_mutex_t timer_mutex;
enum timer_state state;
}timer_data;
static void *timer_thread(void *thread_data)
{
int ret;
unsigned char retries=0;
int ret = -ETIMEDOUT;
struct timespec ts;
struct timeval tv;
timer_data t;
t.callback_func = ((timer_data *)thread_data)->callback_func;
t.user_data = ((timer_data *)thread_data)->user_data;
t.time_msec = ((timer_data *)thread_data)->time_msec;
pthread_cond_t timer_cond;
pthread_mutex_t timer_mutex;
timer_data* t = (timer_data*)thread_data;
LOC_LOGD("%s:%d]: Enter. Delay = %d\n", __func__, __LINE__, t.time_msec);
//Copied over all info into local variable. Do not need allocated struct
free(thread_data);
LOC_LOGD("%s:%d]: Enter. Delay = %d\n", __func__, __LINE__, t->time_msec);
if(pthread_cond_init(&timer_cond, NULL)) {
LOC_LOGE("%s:%d]: Pthread cond init failed\n", __func__, __LINE__);
ret = -1;
goto err;
gettimeofday(&tv, NULL);
clock_gettime(CLOCK_REALTIME, &ts);
if(t->time_msec >= 1000) {
ts.tv_sec += t->time_msec/1000;
t->time_msec = t->time_msec % 1000;
}
if(pthread_mutex_init(&timer_mutex, NULL)) {
LOC_LOGE("%s:%d]: Pthread mutex init failed\n", __func__, __LINE__);
ret = -1;
goto mutex_err;
if(t->time_msec)
ts.tv_nsec += t->time_msec * 1000000;
if(ts.tv_nsec > 999999999) {
LOC_LOGD("%s:%d]: Large nanosecs\n", __func__, __LINE__);
ts.tv_sec += 1;
ts.tv_nsec -= 1000000000;
}
while(retries < MAX_DELAY_RETRIES) {
gettimeofday(&tv, NULL);
clock_gettime(CLOCK_REALTIME, &ts);
if(t.time_msec >= 1000) {
ts.tv_sec += t.time_msec/1000;
t.time_msec = t.time_msec % 1000;
}
if(t.time_msec)
ts.tv_nsec += t.time_msec * 1000000;
if(ts.tv_nsec > 999999999) {
LOC_LOGD("%s:%d]: Large nanosecs\n", __func__, __LINE__);
ts.tv_sec += 1;
ts.tv_nsec -= 1000000000;
}
LOC_LOGD("%s:%d]: ts.tv_sec:%d; ts.tv_nsec:%d\n",
__func__, __LINE__, (int)ts.tv_sec, (int)ts.tv_nsec);
LOC_LOGD("%s:%d]: Current time: %d sec; %d nsec\n",
__func__, __LINE__, (int)tv.tv_sec, (int)tv.tv_usec*1000);
pthread_mutex_lock(&(timer_mutex));
ret = pthread_cond_timedwait(&timer_cond, &timer_mutex, &ts);
pthread_mutex_unlock(&(timer_mutex));
if(ret != ETIMEDOUT) {
LOC_LOGE("%s:%d]: Call to pthread timedwait failed; ret=%d\n",
__func__, __LINE__,ret);
ret = -1;
retries++;
}
else {
ret = 0;
break;
}
LOC_LOGD("%s:%d]: ts.tv_sec:%d; ts.tv_nsec:%d\n"
"\t Current time: %d sec; %d nsec",
__func__, __LINE__, (int)ts.tv_sec, (int)ts.tv_nsec,
(int)tv.tv_sec, (int)tv.tv_usec*1000);
pthread_mutex_lock(&(t->timer_mutex));
if (READY == t->state) {
t->state = WAITING;
ret = pthread_cond_timedwait(&t->timer_cond, &t->timer_mutex, &ts);
t->state = DONE;
}
pthread_mutex_unlock(&(t->timer_mutex));
switch (ret) {
case ETIMEDOUT:
LOC_LOGV("%s:%d]: loc_timer timed out", __func__, __LINE__);
break;
case 0:
LOC_LOGV("%s:%d]: loc_timer stopped", __func__, __LINE__);
break;
case -ETIMEDOUT:
LOC_LOGV("%s:%d]: loc_timer cancelled", __func__, __LINE__);
break;
default:
LOC_LOGE("%s:%d]: Call to pthread timedwait failed; ret=%d\n",
__func__, __LINE__, ret);
break;
}
pthread_mutex_destroy(&timer_mutex);
mutex_err:
pthread_cond_destroy(&timer_cond);
err:
if(!ret)
t.callback_func(t.user_data, ret);
pthread_mutex_destroy(&t->timer_mutex);
pthread_cond_destroy(&t->timer_cond);
if(ETIMEDOUT == ret)
t->callback_func(t->user_data, ret);
free(t);
LOC_LOGD("%s:%d]: Exit\n", __func__, __LINE__);
return NULL;
}
int loc_timer_start(unsigned int msec, loc_timer_callback cb_func,
void* caller_data)
void* loc_timer_start(unsigned int msec, loc_timer_callback cb_func,
void* caller_data)
{
int ret=0;
timer_data *t=NULL;
pthread_attr_t tattr;
pthread_t id;
LOC_LOGD("%s:%d]: Enter\n", __func__, __LINE__);
if(cb_func == NULL || msec == 0) {
LOC_LOGE("%s:%d]: Error: Wrong parameters\n", __func__, __LINE__);
ret = -1;
goto err;
goto _err;
}
t = (timer_data *)calloc(1, sizeof(timer_data));
if(t == NULL) {
LOC_LOGE("%s:%d]: Could not allocate memory. Failing.\n",
__func__, __LINE__);
ret = -1;
goto err;
goto _err;
}
if(pthread_cond_init(&(t->timer_cond), NULL)) {
LOC_LOGE("%s:%d]: Pthread cond init failed\n", __func__, __LINE__);
goto t_err;
}
if(pthread_mutex_init(&(t->timer_mutex), NULL)) {
LOC_LOGE("%s:%d]: Pthread mutex init failed\n", __func__, __LINE__);
goto cond_err;
}
t->callback_func = cb_func;
t->user_data = caller_data;
t->time_msec = msec;
t->state = READY;
pthread_attr_init(&tattr);
if (pthread_attr_init(&tattr)) {
LOC_LOGE("%s:%d]: Pthread mutex init failed\n", __func__, __LINE__);
goto mutex_err;
}
pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
if(pthread_create(&(id), &tattr, timer_thread, (void *)t)) {
LOC_LOGE("%s:%d]: Could not create thread\n", __func__, __LINE__);
ret = -1;
goto attr_err;
}
else {
LOC_LOGD("%s:%d]: Created thread with id: %d\n",
__func__, __LINE__, (int)id);
}
LOC_LOGD("%s:%d]: Created thread with id: %d\n",
__func__, __LINE__, (int)id);
goto _err;
attr_err:
pthread_attr_destroy(&tattr);
err:
mutex_err:
pthread_mutex_destroy(&t->timer_mutex);
cond_err:
pthread_cond_destroy(&t->timer_cond);
t_err:
free(t);
_err:
LOC_LOGD("%s:%d]: Exit\n", __func__, __LINE__);
return ret;
return t;
}
void loc_timer_stop(void* handle) {
timer_data* t = (timer_data*)handle;
if (NULL != t && (READY == t->state || WAITING == t->state)) {
pthread_mutex_lock(&(t->timer_mutex));
if (READY == t->state || WAITING == t->state) {
pthread_cond_signal(&t->timer_cond);
t->state = ABORT;
}
pthread_mutex_unlock(&(t->timer_mutex));
}
}

17
utils/loc_timer.h
View file

@ -43,10 +43,19 @@ extern "C" {
*/
typedef void(*loc_timer_callback)(void *user_data, int result);
//int loc_timer_start(loc_timer_client_data *p_thread);
int loc_timer_start(unsigned int delay_msec,
loc_timer_callback,
void* user_data);
/*
Returns the handle, which can be used to stop the timer
*/
void* loc_timer_start(unsigned int delay_msec,
loc_timer_callback,
void* user_data);
/*
handle becomes invalid upon the return of the callback
*/
void loc_timer_stop(void* handle);
#ifdef __cplusplus
}
#endif /* __cplusplus */