-/* $Id$ */
-
/* A (synchronized) message queue. */
/* Popping an empty queue is blocking, as well as pushing a full one */
-/* Copyright (c) 2007 Martin Quinson. All rights reserved. */
+/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "xbt/log.h"
#include "xbt/dynar.h"
-#include "xbt/synchro.h"
-#include "xbt/queue.h" /* this module */
-#include "gras/virtu.h"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_queue,xbt,"Message exchanging queue");
+#include "xbt/queue.h" /* this module */
+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;
+ 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");
+xbt_queue_t xbt_queue_new(int capacity, unsigned long elm_size)
+{
+ xbt_queue_t res = xbt_new0(s_xbt_queue_t, 1);
+ if (capacity<0)
+ capacity=0;
res->capacity = capacity;
- res->data = xbt_dynar_new(elm_size,NULL);
+ 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.
*
* Any remaining content is leaked.
*/
-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));
+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;
}
/** @brief Get the queue size */
-unsigned long xbt_queue_length(const xbt_queue_t queue) {
+unsigned long xbt_queue_length(const xbt_queue_t queue)
+{
unsigned long res;
xbt_mutex_acquire(queue->mutex);
- res=xbt_dynar_length(queue->data);
+ res = xbt_dynar_length(queue->data);
xbt_mutex_release(queue->mutex);
return res;
}
*
* @see #xbt_dynar_push
*/
-void xbt_queue_push(xbt_queue_t queue, const void *src) {
+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);
+ while (queue->capacity != 0
+ && queue->capacity == xbt_dynar_length(queue->data)) {
+ XBT_DEBUG("Capacity of %p exceeded (=%d). Waiting", queue,
+ queue->capacity);
+ xbt_cond_wait(queue->not_full, queue->mutex);
}
- xbt_dynar_push(queue->data,src);
+ xbt_dynar_push(queue->data, src);
xbt_cond_signal(queue->not_empty);
xbt_mutex_release(queue->mutex);
}
* @see #xbt_dynar_pop
*
*/
-void xbt_queue_pop(xbt_queue_t queue, void* const dst) {
+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);
+ while (xbt_dynar_is_empty(queue->data)) {
+ XBT_DEBUG("Queue %p empty. Waiting", queue);
+ xbt_cond_wait(queue->not_empty, queue->mutex);
}
- xbt_dynar_pop(queue->data,dst);
+ xbt_dynar_pop(queue->data, dst);
xbt_cond_signal(queue->not_full);
xbt_mutex_release(queue->mutex);
}
*
* @see #xbt_dynar_unshift
*/
-void xbt_queue_unshift(xbt_queue_t queue, const void *src) {
+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);
+ while (queue->capacity != 0
+ && queue->capacity == xbt_dynar_length(queue->data)) {
+ XBT_DEBUG("Capacity of %p exceeded (=%d). Waiting", queue,
+ queue->capacity);
+ xbt_cond_wait(queue->not_full, queue->mutex);
}
- xbt_dynar_unshift(queue->data,src);
+ xbt_dynar_unshift(queue->data, src);
xbt_cond_signal(queue->not_empty);
xbt_mutex_release(queue->mutex);
}
* @see #xbt_dynar_shift
*
*/
-void xbt_queue_shift(xbt_queue_t queue, void* const dst) {
+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);
+ while (xbt_dynar_is_empty(queue->data)) {
+ XBT_DEBUG("Queue %p empty. Waiting", queue);
+ xbt_cond_wait(queue->not_empty, queue->mutex);
}
- xbt_dynar_shift(queue->data,dst);
+ xbt_dynar_shift(queue->data, dst);
xbt_cond_signal(queue->not_full);
xbt_mutex_release(queue->mutex);
}
*
* @see #xbt_queue_push
*/
-void xbt_queue_push_timed(xbt_queue_t queue, const void *src,double delay) {
+void xbt_queue_push_timed(xbt_queue_t queue, const void *src, double delay)
+{
double begin = xbt_time();
- xbt_ex_t e;
xbt_mutex_acquire(queue->mutex);
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);
+ THROWF(timeout_error, 0,
+ "Capacity of %p exceeded (=%d), and delay = 0", queue,
+ queue->capacity);
}
} else {
while (queue->capacity != 0 &&
- queue->capacity == xbt_dynar_length(queue->data) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
+ queue->capacity == xbt_dynar_length(queue->data) &&
+ (delay < 0 || (xbt_time() - begin) <= delay)) {
- DEBUG2("Capacity of %p exceded (=%d). Waiting",
- queue,queue->capacity);
+ XBT_DEBUG("Capacity of %p exceeded (=%d). Waiting", queue,
+ queue->capacity);
TRY {
- xbt_cond_timedwait(queue->not_full,queue->mutex,
- delay < 0 ? -1 : delay - (xbt_time()-begin));
- } CATCH(e) {
+ xbt_cond_timedwait(queue->not_full, queue->mutex,
+ delay < 0 ? -1 : delay - (xbt_time() - begin));
+ }
+ CATCH_ANONYMOUS {
xbt_mutex_release(queue->mutex);
RETHROW;
}
}
}
- xbt_dynar_push(queue->data,src);
+ xbt_dynar_push(queue->data, src);
xbt_cond_signal(queue->not_empty);
xbt_mutex_release(queue->mutex);
}
* @see #xbt_queue_pop
*
*/
-void xbt_queue_pop_timed(xbt_queue_t queue, void* const dst,double delay) {
+void xbt_queue_pop_timed(xbt_queue_t queue, void *const dst, double delay)
+{
double begin = xbt_time();
- xbt_ex_t e;
xbt_mutex_acquire(queue->mutex);
if (delay == 0) {
- if (xbt_dynar_length(queue->data) == 0) {
+ if (xbt_dynar_is_empty(queue->data)) {
xbt_mutex_release(queue->mutex);
- THROW0(timeout_error,0,"Delay = 0, and queue is empty");
+ THROWF(timeout_error, 0, "Delay = 0, and queue is empty");
}
} else {
- while ( (xbt_dynar_length(queue->data) == 0) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
- DEBUG1("Queue %p empty. Waiting",queue);
+ while ((xbt_dynar_is_empty(queue->data)) &&
+ (delay < 0 || (xbt_time() - begin) <= delay)) {
+ XBT_DEBUG("Queue %p empty. Waiting", queue);
TRY {
- xbt_cond_timedwait(queue->not_empty,queue->mutex,
- delay<0 ? -1 : delay - (xbt_time()-begin));
- } CATCH(e) {
+ xbt_cond_timedwait(queue->not_empty, queue->mutex,
+ delay < 0 ? -1 : delay - (xbt_time() - begin));
+ }
+ CATCH_ANONYMOUS {
xbt_mutex_release(queue->mutex);
RETHROW;
}
}
}
- xbt_dynar_pop(queue->data,dst);
+ xbt_dynar_pop(queue->data, dst);
xbt_cond_signal(queue->not_full);
xbt_mutex_release(queue->mutex);
}
*
* @see #xbt_queue_unshift
*/
-void xbt_queue_unshift_timed(xbt_queue_t queue, const void *src,double delay) {
+void xbt_queue_unshift_timed(xbt_queue_t queue, const void *src,
+ double delay)
+{
double begin = xbt_time();
- xbt_ex_t e;
xbt_mutex_acquire(queue->mutex);
- if (delay==0) {
+ if (delay == 0) {
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);
+ THROWF(timeout_error, 0,
+ "Capacity of %p exceeded (=%d), and delay = 0", queue,
+ queue->capacity);
}
} else {
while (queue->capacity != 0 &&
- queue->capacity == xbt_dynar_length(queue->data) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
+ queue->capacity == xbt_dynar_length(queue->data) &&
+ (delay < 0 || (xbt_time() - begin) <= delay)) {
- DEBUG2("Capacity of %p exceded (=%d). Waiting",
- queue,queue->capacity);
+ XBT_DEBUG("Capacity of %p exceeded (=%d). Waiting", queue,
+ queue->capacity);
TRY {
- xbt_cond_timedwait(queue->not_full,queue->mutex,
- delay < 0 ? -1 : delay - (xbt_time()-begin));
- } CATCH(e) {
+ xbt_cond_timedwait(queue->not_full, queue->mutex,
+ delay < 0 ? -1 : delay - (xbt_time() - begin));
+ }
+ CATCH_ANONYMOUS {
xbt_mutex_release(queue->mutex);
RETHROW;
}
}
}
- xbt_dynar_unshift(queue->data,src);
+ xbt_dynar_unshift(queue->data, src);
xbt_cond_signal(queue->not_empty);
xbt_mutex_release(queue->mutex);
}
* @see #xbt_queue_shift
*
*/
-void xbt_queue_shift_timed(xbt_queue_t queue, void* const dst,double delay) {
+void xbt_queue_shift_timed(xbt_queue_t queue, void *const dst,
+ double delay)
+{
double begin = xbt_time();
- xbt_ex_t e;
xbt_mutex_acquire(queue->mutex);
if (delay == 0) {
- if (xbt_dynar_length(queue->data) == 0) {
+ if (xbt_dynar_is_empty(queue->data)) {
xbt_mutex_release(queue->mutex);
- THROW0(timeout_error,0,"Delay = 0, and queue is empty");
+ THROWF(timeout_error, 0, "Delay = 0, and queue is empty");
}
} else {
- while ( (xbt_dynar_length(queue->data) == 0) &&
- (delay<0 || (xbt_time() - begin) <= delay) ) {
- DEBUG1("Queue %p empty. Waiting",queue);
+ while ((xbt_dynar_is_empty(queue->data)) &&
+ (delay < 0 || (xbt_time() - begin) <= delay)) {
+ XBT_DEBUG("Queue %p empty. Waiting", queue);
TRY {
- xbt_cond_timedwait(queue->not_empty,queue->mutex,
- delay<0 ? -1 : delay - (xbt_time()-begin));
- } CATCH(e) {
+ xbt_cond_timedwait(queue->not_empty, queue->mutex,
+ delay < 0 ? -1 : delay - (xbt_time() - begin));
+ }
+ CATCH_ANONYMOUS {
xbt_mutex_release(queue->mutex);
RETHROW;
}
}
}
- if (xbt_dynar_length(queue->data) == 0) {
+ if (xbt_dynar_is_empty(queue->data)) {
xbt_mutex_release(queue->mutex);
- THROW1(timeout_error,0,"Timeout (%f) elapsed, but queue still empty",delay);
+ THROWF(timeout_error, 0, "Timeout (%f) elapsed, but queue still empty",
+ delay);
}
- xbt_dynar_shift(queue->data,dst);
+ xbt_dynar_shift(queue->data, dst);
xbt_cond_signal(queue->not_full);
xbt_mutex_release(queue->mutex);
}
