XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_queue,xbt,"Message exchanging queue");
typedef struct s_xbt_queue_ {
- int capacity;
- xbt_dynar_t data;
- xbt_mutex_t mutex;
- xbt_cond_t not_full, not_empty;
+ int capacity;
+ xbt_dynar_t data;
+ xbt_mutex_t mutex;
+ xbt_cond_t not_full, not_empty;
} s_xbt_queue_t;
/** @brief Create a new message exchange queue.
- *
+ *
* @param capacity the capacity of the queue. If non-nul, any attempt to push an item which would let the size of the queue over this number will be blocking until someone else pop some data
* @param elm_size size of each element stored in it (see #xbt_dynar_new)
*/
xbt_queue_t xbt_queue_new(int capacity,unsigned long elm_size) {
- xbt_queue_t res = xbt_new0(s_xbt_queue_t,1);
- xbt_assert0(capacity>=0,"Capacity cannot be negative");
-
- res->capacity = capacity;
- res->data = xbt_dynar_new(elm_size,NULL);
- res->mutex = xbt_mutex_init();
- res->not_full = xbt_cond_init();
- res->not_empty = xbt_cond_init();
- return res;
+ xbt_queue_t res = xbt_new0(s_xbt_queue_t,1);
+ xbt_assert0(capacity>=0,"Capacity cannot be negative");
+
+ res->capacity = capacity;
+ res->data = xbt_dynar_new(elm_size,NULL);
+ res->mutex = xbt_mutex_init();
+ res->not_full = xbt_cond_init();
+ res->not_empty = xbt_cond_init();
+ return res;
}
/** @brief Destroy a message exchange queue.
*
*/
void xbt_queue_free(xbt_queue_t *queue) {
- xbt_dynar_free(&( (*queue)->data ));
- xbt_mutex_destroy( (*queue)->mutex );
- xbt_cond_destroy( (*queue)->not_full );
- xbt_cond_destroy( (*queue)->not_empty );
- free((*queue));
- *queue = NULL;
+ xbt_dynar_free(&( (*queue)->data ));
+ xbt_mutex_destroy( (*queue)->mutex );
+ xbt_cond_destroy( (*queue)->not_full );
+ xbt_cond_destroy( (*queue)->not_empty );
+ free((*queue));
+ *queue = NULL;
}
/** @brief Get the queue size */
unsigned long xbt_queue_length(const xbt_queue_t queue) {
- unsigned long res;
- xbt_mutex_acquire(queue->mutex);
- res=xbt_dynar_length(queue->data);
- xbt_mutex_release(queue->mutex);
- return res;
+ unsigned long res;
+ xbt_mutex_acquire(queue->mutex);
+ res=xbt_dynar_length(queue->data);
+ xbt_mutex_release(queue->mutex);
+ return res;
}
/** @brief Push something to the message exchange queue.
- *
+ *
* This is blocking if the declared capacity is non-nul, and if this amount is reached.
- *
+ *
* @see #xbt_dynar_push
*/
void xbt_queue_push(xbt_queue_t queue, const void *src) {
- xbt_mutex_acquire(queue->mutex);
- while (queue->capacity != 0 && queue->capacity == xbt_dynar_length(queue->data)) {
- DEBUG2("Capacity of %p exceded (=%d). Waiting",queue,queue->capacity);
- xbt_cond_wait(queue->not_full,queue->mutex);
- }
- xbt_dynar_push(queue->data,src);
- xbt_cond_signal(queue->not_empty);
- xbt_mutex_release(queue->mutex);
+ xbt_mutex_acquire(queue->mutex);
+ while (queue->capacity != 0 && queue->capacity == xbt_dynar_length(queue->data)) {
+ DEBUG2("Capacity of %p exceded (=%d). Waiting",queue,queue->capacity);
+ xbt_cond_wait(queue->not_full,queue->mutex);
+ }
+ xbt_dynar_push(queue->data,src);
+ xbt_cond_signal(queue->not_empty);
+ xbt_mutex_release(queue->mutex);
}
-
+
/** @brief Pop something from the message exchange queue.
- *
+ *
* This is blocking if the queue is empty.
- *
+ *
* @see #xbt_dynar_pop
- *
+ *
*/
void xbt_queue_pop(xbt_queue_t queue, void* const dst) {
- xbt_mutex_acquire(queue->mutex);
- while (xbt_dynar_length(queue->data) == 0) {
- DEBUG1("Queue %p empty. Waiting",queue);
- xbt_cond_wait(queue->not_empty,queue->mutex);
- }
- xbt_dynar_pop(queue->data,dst);
- xbt_cond_signal(queue->not_full);
- xbt_mutex_release(queue->mutex);
+ xbt_mutex_acquire(queue->mutex);
+ while (xbt_dynar_length(queue->data) == 0) {
+ DEBUG1("Queue %p empty. Waiting",queue);
+ xbt_cond_wait(queue->not_empty,queue->mutex);
+ }
+ xbt_dynar_pop(queue->data,dst);
+ xbt_cond_signal(queue->not_full);
+ xbt_mutex_release(queue->mutex);
}
/** @brief Unshift something to the message exchange queue.
- *
+ *
* This is blocking if the declared capacity is non-nul, and if this amount is reached.
- *
+ *
* @see #xbt_dynar_unshift
*/
void xbt_queue_unshift(xbt_queue_t queue, const void *src) {
- xbt_mutex_acquire(queue->mutex);
- while (queue->capacity != 0 && queue->capacity == xbt_dynar_length(queue->data)) {
- DEBUG2("Capacity of %p exceded (=%d). Waiting",queue,queue->capacity);
- xbt_cond_wait(queue->not_full,queue->mutex);
- }
- xbt_dynar_unshift(queue->data,src);
- xbt_cond_signal(queue->not_empty);
- xbt_mutex_release(queue->mutex);
+ xbt_mutex_acquire(queue->mutex);
+ while (queue->capacity != 0 && queue->capacity == xbt_dynar_length(queue->data)) {
+ DEBUG2("Capacity of %p exceded (=%d). Waiting",queue,queue->capacity);
+ xbt_cond_wait(queue->not_full,queue->mutex);
+ }
+ xbt_dynar_unshift(queue->data,src);
+ xbt_cond_signal(queue->not_empty);
+ xbt_mutex_release(queue->mutex);
}
-
+
/** @brief Shift something from the message exchange queue.
- *
+ *
* This is blocking if the queue is empty.
- *
+ *
* @see #xbt_dynar_shift
- *
+ *
*/
void xbt_queue_shift(xbt_queue_t queue, void* const dst) {
- xbt_mutex_acquire(queue->mutex);
- while (xbt_dynar_length(queue->data) == 0) {
- DEBUG1("Queue %p empty. Waiting",queue);
- xbt_cond_wait(queue->not_empty,queue->mutex);
- }
- xbt_dynar_shift(queue->data,dst);
- xbt_cond_signal(queue->not_full);
- xbt_mutex_release(queue->mutex);
+ xbt_mutex_acquire(queue->mutex);
+ while (xbt_dynar_length(queue->data) == 0) {
+ DEBUG1("Queue %p empty. Waiting",queue);
+ xbt_cond_wait(queue->not_empty,queue->mutex);
+ }
+ xbt_dynar_shift(queue->data,dst);
+ xbt_cond_signal(queue->not_full);
+ xbt_mutex_release(queue->mutex);
}
/** @brief Push something to the message exchange queue, with a timeout.
- *
+ *
* @see #xbt_queue_push
*/
void xbt_queue_push_timed(xbt_queue_t queue, const void *src,double delay) {
xbt_mutex_acquire(queue->mutex);
if (delay == 0) {
- if (queue->capacity != 0 &&
- queue->capacity == xbt_dynar_length(queue->data)) {
+ if (queue->capacity != 0 &&
+ queue->capacity == xbt_dynar_length(queue->data)) {
xbt_mutex_release(queue->mutex);
THROW2(timeout_error,0,"Capacity of %p exceded (=%d), and delay = 0",
- queue,queue->capacity);
+ queue,queue->capacity);
}
} else {
- while (queue->capacity != 0 &&
- queue->capacity == xbt_dynar_length(queue->data) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
-
+ while (queue->capacity != 0 &&
+ queue->capacity == xbt_dynar_length(queue->data) &&
+ (delay<0 || (xbt_time() - begin) <= delay) ) {
+
DEBUG2("Capacity of %p exceded (=%d). Waiting",
- queue,queue->capacity);
+ queue,queue->capacity);
TRY {
- xbt_cond_timedwait(queue->not_full,queue->mutex,
- delay < 0 ? -1 : delay - (xbt_time()-begin));
+ xbt_cond_timedwait(queue->not_full,queue->mutex,
+ delay < 0 ? -1 : delay - (xbt_time()-begin));
} CATCH(e) {
- xbt_mutex_release(queue->mutex);
- RETHROW;
+ xbt_mutex_release(queue->mutex);
+ RETHROW;
}
}
}
xbt_mutex_release(queue->mutex);
}
-
+
/** @brief Pop something from the message exchange queue, with a timeout.
- *
+ *
* @see #xbt_queue_pop
- *
+ *
*/
void xbt_queue_pop_timed(xbt_queue_t queue, void* const dst,double delay) {
double begin = xbt_time();
THROW0(timeout_error,0,"Delay = 0, and queue is empty");
}
} else {
- while ( (xbt_dynar_length(queue->data) == 0) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
+ while ( (xbt_dynar_length(queue->data) == 0) &&
+ (delay<0 || (xbt_time() - begin) <= delay) ) {
DEBUG1("Queue %p empty. Waiting",queue);
TRY {
- xbt_cond_timedwait(queue->not_empty,queue->mutex,
- delay<0 ? -1 : delay - (xbt_time()-begin));
+ xbt_cond_timedwait(queue->not_empty,queue->mutex,
+ delay<0 ? -1 : delay - (xbt_time()-begin));
} CATCH(e) {
- xbt_mutex_release(queue->mutex);
- RETHROW;
+ xbt_mutex_release(queue->mutex);
+ RETHROW;
}
}
}
}
/** @brief Unshift something to the message exchange queue, with a timeout.
- *
+ *
* @see #xbt_queue_unshift
*/
void xbt_queue_unshift_timed(xbt_queue_t queue, const void *src,double delay) {
xbt_mutex_acquire(queue->mutex);
if (delay==0) {
- if (queue->capacity != 0 &&
- queue->capacity == xbt_dynar_length(queue->data)) {
+ if (queue->capacity != 0 &&
+ queue->capacity == xbt_dynar_length(queue->data)) {
xbt_mutex_release(queue->mutex);
THROW2(timeout_error,0,"Capacity of %p exceded (=%d), and delay = 0",
- queue,queue->capacity);
+ queue,queue->capacity);
}
} else {
- while (queue->capacity != 0 &&
- queue->capacity == xbt_dynar_length(queue->data) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
-
+ while (queue->capacity != 0 &&
+ queue->capacity == xbt_dynar_length(queue->data) &&
+ (delay<0 || (xbt_time() - begin) <= delay) ) {
+
DEBUG2("Capacity of %p exceded (=%d). Waiting",
- queue,queue->capacity);
+ queue,queue->capacity);
TRY {
- xbt_cond_timedwait(queue->not_full,queue->mutex,
- delay < 0 ? -1 : delay - (xbt_time()-begin));
+ xbt_cond_timedwait(queue->not_full,queue->mutex,
+ delay < 0 ? -1 : delay - (xbt_time()-begin));
} CATCH(e) {
- xbt_mutex_release(queue->mutex);
- RETHROW;
+ xbt_mutex_release(queue->mutex);
+ RETHROW;
}
}
}
xbt_cond_signal(queue->not_empty);
xbt_mutex_release(queue->mutex);
}
-
+
/** @brief Shift something from the message exchange queue, with a timeout.
- *
+ *
* @see #xbt_queue_shift
- *
+ *
*/
void xbt_queue_shift_timed(xbt_queue_t queue, void* const dst,double delay) {
double begin = xbt_time();
THROW0(timeout_error,0,"Delay = 0, and queue is empty");
}
} else {
- while ( (xbt_dynar_length(queue->data) == 0) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
+ while ( (xbt_dynar_length(queue->data) == 0) &&
+ (delay<0 || (xbt_time() - begin) <= delay) ) {
DEBUG1("Queue %p empty. Waiting",queue);
TRY {
- xbt_cond_timedwait(queue->not_empty,queue->mutex,
- delay<0 ? -1 : delay - (xbt_time()-begin));
+ xbt_cond_timedwait(queue->not_empty,queue->mutex,
+ delay<0 ? -1 : delay - (xbt_time()-begin));
} CATCH(e) {
- xbt_mutex_release(queue->mutex);
- RETHROW;
+ xbt_mutex_release(queue->mutex);
+ RETHROW;
}
}
}
if (xbt_dynar_length(queue->data) == 0) {
- xbt_mutex_release(queue->mutex);
- THROW1(timeout_error,0,"Timeout (%f) elapsed, but queue still empty",delay);
+ xbt_mutex_release(queue->mutex);
+ THROW1(timeout_error,0,"Timeout (%f) elapsed, but queue still empty",delay);
}
-
+
xbt_dynar_shift(queue->data,dst);
xbt_cond_signal(queue->not_full);
xbt_mutex_release(queue->mutex);
