/**
- * DLL of request plans a particular pending request is
- * involved with.
+ * M:N binding of plans to pending requests.
+ * Each pending request can be in a number of plans,
+ * and each plan can have a number of pending requests.
+ * Objects of this type indicate a mapping of a plan to
+ * a particular pending request.
+ *
+ * The corresponding head and tail of the "PE" MDLL
+ * are stored in a 'struct GSF_RequestPlan'. (We need
+ * to be able to lookup all pending requests corresponding
+ * to a given plan entry.)
+ *
+ * Similarly head and tail of the "PR" MDLL are stored
+ * with the 'struct GSF_PendingRequest'. (We need
+ * to be able to lookup all plan entries corresponding
+ * to a given pending request.)
*/
-struct GSF_RequestPlanReference
+struct GSF_PendingRequestPlanBijection
{
/**
* This is a doubly-linked list.
*/
- struct GSF_RequestPlanReference *next;
+ struct GSF_PendingRequestPlanBijection *next_PR;
/**
* This is a doubly-linked list.
*/
- struct GSF_RequestPlanReference *prev;
+ struct GSF_PendingRequestPlanBijection *prev_PR;
/**
- * Associated request plan.
- */
- struct GSF_RequestPlan *rp;
-
- /**
- * Corresponding PendingRequestList.
+ * This is a doubly-linked list.
*/
- struct PendingRequestList *prl;
-};
-
-
-/**
- * List of GSF_PendingRequests this request plan
- * participates with.
- */
-struct PendingRequestList
-{
+ struct GSF_PendingRequestPlanBijection *next_PE;
/**
* This is a doubly-linked list.
*/
- struct PendingRequestList *next;
+ struct GSF_PendingRequestPlanBijection *prev_PE;
/**
- * This is a doubly-linked list.
+ * Associated request plan.
*/
- struct PendingRequestList *prev;
+ struct GSF_RequestPlan *rp;
/**
* Associated pending request.
*/
struct GSF_PendingRequest *pr;
- /**
- * Corresponding GSF_RequestPlanReference.
- */
- struct GSF_RequestPlanReference *rpr;
-
};
/**
* Head of list of associated pending requests.
*/
- struct PendingRequestList *prl_head;
+ struct GSF_PendingRequestPlanBijection *pe_head;
/**
* Tail of list of associated pending requests.
*/
- struct PendingRequestList *prl_tail;
+ struct GSF_PendingRequestPlanBijection *pe_tail;
/**
* Earliest time we'd be happy to (re)transmit this request.
static const struct GNUNET_HashCode *
get_rp_key (struct GSF_RequestPlan *rp)
{
- return &GSF_pending_request_get_data_ (rp->prl_head->pr)->query;
+ return &GSF_pending_request_get_data_ (rp->pe_head->pr)->query;
}
GNUNET_STATISTICS_set (GSF_stats,
gettext_noop ("# average retransmission delay (ms)"),
total_delay * 1000LL / plan_count, GNUNET_NO);
- prd = GSF_pending_request_get_data_ (rp->prl_head->pr);
+ prd = GSF_pending_request_get_data_ (rp->pe_head->pr);
if (rp->transmission_counter < 8)
delay =
delay =
GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS,
8 + (1LL << 24));
- delay.rel_value =
- GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
- delay.rel_value + 1);
+ delay.rel_value_us =
+ GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ delay.rel_value_us + 1);
/* Add 0.01 to avg_delay to avoid division-by-zero later */
- avg_delay = (((avg_delay * (N - 1.0)) + delay.rel_value) / N) + 0.01;
+ avg_delay = (((avg_delay * (N - 1.0)) + delay.rel_value_us) / N) + 0.01;
/*
* For the priority, we need to consider a few basic rules:
*/
rp->priority =
round ((GSF_current_priorities +
- 1.0) * atan (delay.rel_value / avg_delay)) / M_PI_4;
+ 1.0) * atan (delay.rel_value_us / avg_delay)) / M_PI_4;
/* Note: usage of 'round' and 'atan' requires -lm */
if (rp->transmission_counter != 0)
- delay.rel_value += TTL_DECREMENT;
+ delay.rel_value_us += TTL_DECREMENT * 1000;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Considering (re)transmission number %u in %llu ms\n",
+ "Considering (re)transmission number %u in %s\n",
(unsigned int) rp->transmission_counter,
- (unsigned long long) delay.rel_value);
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES));
rp->earliest_transmission = GNUNET_TIME_relative_to_absolute (delay);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Earliest (re)transmission for `%s' in %us\n",
GNUNET_h2s (&prd->query), rp->transmission_counter);
GNUNET_assert (rp->hn == NULL);
- if (GNUNET_TIME_absolute_get_remaining (rp->earliest_transmission).rel_value
- == 0)
+ if (0 == GNUNET_TIME_absolute_get_remaining (rp->earliest_transmission).rel_value_us)
rp->hn = GNUNET_CONTAINER_heap_insert (pp->priority_heap, rp, rp->priority);
else
rp->hn =
GNUNET_CONTAINER_heap_insert (pp->delay_heap, rp,
- rp->earliest_transmission.abs_value);
+ rp->earliest_transmission.abs_value_us);
GNUNET_assert (GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_contains_value (pp->plan_map,
get_rp_key (rp),
get_latest (const struct GSF_RequestPlan *rp)
{
struct GSF_PendingRequest *ret;
- struct PendingRequestList *prl;
-
- prl = rp->prl_head;
- ret = prl->pr;
- prl = prl->next;
- while (NULL != prl)
+ struct GSF_PendingRequestPlanBijection *bi;
+
+ bi = rp->pe_head;
+ if (NULL == bi)
+ return NULL; /* should never happen */
+ ret = bi->pr;
+ bi = bi->next_PE;
+ while (NULL != bi)
{
- if (GSF_pending_request_get_data_ (prl->pr)->ttl.abs_value >
- GSF_pending_request_get_data_ (ret)->ttl.abs_value)
- ret = prl->pr;
- prl = prl->next;
+ if (GSF_pending_request_get_data_ (bi->pr)->ttl.abs_value_us >
+ GSF_pending_request_get_data_ (ret)->ttl.abs_value_us)
+ ret = bi->pr;
+ bi = bi->next_PE;
}
return ret;
}
if (NULL == buf)
{
/* failed, try again... */
+ if (GNUNET_SCHEDULER_NO_TASK != pp->task)
+ GNUNET_SCHEDULER_cancel (pp->task);
+
pp->task = GNUNET_SCHEDULER_add_now (&schedule_peer_transmission, pp);
GNUNET_STATISTICS_update (GSF_stats,
gettext_noop
rp = GNUNET_CONTAINER_heap_peek (pp->priority_heap);
if (NULL == rp)
{
+ if (GNUNET_SCHEDULER_NO_TASK != pp->task)
+ GNUNET_SCHEDULER_cancel (pp->task);
pp->task = GNUNET_SCHEDULER_add_now (&schedule_peer_transmission, pp);
return 0;
}
msize = GSF_pending_request_get_message_ (get_latest (rp), buf_size, buf);
if (msize > buf_size)
{
+ if (GNUNET_SCHEDULER_NO_TASK != pp->task)
+ GNUNET_SCHEDULER_cancel (pp->task);
/* buffer to small (message changed), try again */
pp->task = GNUNET_SCHEDULER_add_now (&schedule_peer_transmission, pp);
return 0;
}
/* move ready requests to priority queue */
while ((NULL != (rp = GNUNET_CONTAINER_heap_peek (pp->delay_heap))) &&
- (GNUNET_TIME_absolute_get_remaining
- (rp->earliest_transmission).rel_value == 0))
+ (0 == GNUNET_TIME_absolute_get_remaining
+ (rp->earliest_transmission).rel_value_us))
{
GNUNET_assert (rp == GNUNET_CONTAINER_heap_remove_root (pp->delay_heap));
rp->hn = GNUNET_CONTAINER_heap_insert (pp->priority_heap, rp, rp->priority);
}
delay = GNUNET_TIME_absolute_get_remaining (rp->earliest_transmission);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Sleeping for %llu ms before retrying requests on plan %p.\n",
- (unsigned long long) delay.rel_value, pp);
- GNUNET_STATISTICS_set (GSF_stats, gettext_noop ("# delay heap timeout"),
- delay.rel_value, GNUNET_NO);
+ "Sleeping for %s before retrying requests on plan %p.\n",
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES),
+ pp);
+ GNUNET_STATISTICS_set (GSF_stats, gettext_noop ("# delay heap timeout (ms)"),
+ delay.rel_value_us / 1000LL, GNUNET_NO);
pp->task =
GNUNET_SCHEDULER_add_delayed (delay, &schedule_peer_transmission, pp);
struct MergeContext *mpr = cls;
struct GSF_RequestPlan *rp = element;
struct GSF_PendingRequestData *prd;
- struct GSF_RequestPlanReference *rpr;
- struct PendingRequestList *prl;
+ struct GSF_PendingRequestPlanBijection *bi;
struct GSF_PendingRequest *latest;
if (GNUNET_OK !=
- GSF_pending_request_is_compatible_ (mpr->pr, rp->prl_head->pr))
+ GSF_pending_request_is_compatible_ (mpr->pr, rp->pe_head->pr))
return GNUNET_YES;
/* merge new request with existing request plan */
- rpr = GNUNET_malloc (sizeof (struct GSF_RequestPlanReference));
- prl = GNUNET_malloc (sizeof (struct PendingRequestList));
- rpr->rp = rp;
- rpr->prl = prl;
- prl->rpr = rpr;
- prl->pr = mpr->pr;
+ bi = GNUNET_new (struct GSF_PendingRequestPlanBijection);
+ bi->rp = rp;
+ bi->pr = mpr->pr;
prd = GSF_pending_request_get_data_ (mpr->pr);
- GNUNET_CONTAINER_DLL_insert (prd->rpr_head, prd->rpr_tail, rpr);
- GNUNET_CONTAINER_DLL_insert (rp->prl_head, rp->prl_tail, prl);
+ GNUNET_CONTAINER_MDLL_insert (PR, prd->pr_head, prd->pr_tail, bi);
+ GNUNET_CONTAINER_MDLL_insert (PE, rp->pe_head, rp->pe_tail, bi);
mpr->merged = GNUNET_YES;
#if INSANE_STATISTICS
GNUNET_STATISTICS_update (GSF_stats, gettext_noop ("# requests merged"), 1,
GNUNET_NO);
#endif
latest = get_latest (rp);
- if (GSF_pending_request_get_data_ (latest)->ttl.abs_value <
- prd->ttl.abs_value)
+ if (GSF_pending_request_get_data_ (latest)->ttl.abs_value_us <
+ prd->ttl.abs_value_us)
{
#if INSANE_STATISTICS
GNUNET_STATISTICS_update (GSF_stats, gettext_noop ("# requests refreshed"),
struct PeerPlan *pp;
struct GSF_PendingRequestData *prd;
struct GSF_RequestPlan *rp;
- struct GSF_RequestPlanReference *rpr;
- struct PendingRequestList *prl;
+ struct GSF_PendingRequestPlanBijection *bi;
struct MergeContext mpc;
GNUNET_assert (NULL != cp);
pp = GNUNET_CONTAINER_multihashmap_get (plans, &id->hashPubKey);
if (NULL == pp)
{
- pp = GNUNET_malloc (sizeof (struct PeerPlan));
+ pp = GNUNET_new (struct PeerPlan);
pp->plan_map = GNUNET_CONTAINER_multihashmap_create (128, GNUNET_NO);
pp->priority_heap =
GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MAX);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Planning transmission of query `%s' to peer `%s'\n",
GNUNET_h2s (&prd->query), GNUNET_i2s (id));
- rp = GNUNET_malloc (sizeof (struct GSF_RequestPlan)); // 8 MB
- rpr = GNUNET_malloc (sizeof (struct GSF_RequestPlanReference));
- prl = GNUNET_malloc (sizeof (struct PendingRequestList));
- rpr->rp = rp;
- rpr->prl = prl;
- prl->rpr = rpr;
- prl->pr = pr;
- GNUNET_CONTAINER_DLL_insert (prd->rpr_head, prd->rpr_tail, rpr);
- GNUNET_CONTAINER_DLL_insert (rp->prl_head, rp->prl_tail, prl);
+ rp = GNUNET_new (struct GSF_RequestPlan); // 8 MB
+ bi = GNUNET_new (struct GSF_PendingRequestPlanBijection);
+ bi->rp = rp;
+ bi->pr = pr;
+ GNUNET_CONTAINER_MDLL_insert (PR, prd->pr_head, prd->pr_tail, bi);
+ GNUNET_CONTAINER_MDLL_insert (PE, rp->pe_head, rp->pe_tail, bi);
rp->pp = pp;
GNUNET_assert (GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_put (pp->plan_map,
struct PeerPlan *pp;
struct GSF_RequestPlan *rp;
struct GSF_PendingRequestData *prd;
- struct PendingRequestList *prl;
+ struct GSF_PendingRequestPlanBijection *bi;
id = GSF_connected_peer_get_identity2_ (cp);
pp = GNUNET_CONTAINER_multihashmap_get (plans, &id->hashPubKey);
GNUNET_break (GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_remove (pp->plan_map,
get_rp_key (rp), rp));
- while (NULL != (prl = rp->prl_head))
+ while (NULL != (bi = rp->pe_head))
{
- GNUNET_CONTAINER_DLL_remove (rp->prl_head, rp->prl_tail, prl);
- prd = GSF_pending_request_get_data_ (prl->pr);
- GNUNET_CONTAINER_DLL_remove (prd->rpr_head, prd->rpr_tail, prl->rpr);
- GNUNET_free (prl->rpr);
- GNUNET_free (prl);
+ GNUNET_CONTAINER_MDLL_remove (PE, rp->pe_head, rp->pe_tail, bi);
+ prd = GSF_pending_request_get_data_ (bi->pr);
+ GNUNET_CONTAINER_MDLL_remove (PR, prd->pr_head, prd->pr_tail, bi);
+ GNUNET_free (bi);
}
plan_count--;
GNUNET_free (rp);
GNUNET_break (GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_remove (pp->plan_map,
get_rp_key (rp), rp));
- while (NULL != (prl = rp->prl_head))
+ while (NULL != (bi = rp->pe_head))
{
- GNUNET_CONTAINER_DLL_remove (rp->prl_head, rp->prl_tail, prl);
- prd = GSF_pending_request_get_data_ (prl->pr);
- GNUNET_CONTAINER_DLL_remove (prd->rpr_head, prd->rpr_tail, prl->rpr);
- GNUNET_free (prl->rpr);
- GNUNET_free (prl);
+ prd = GSF_pending_request_get_data_ (bi->pr);
+ GNUNET_CONTAINER_MDLL_remove (PE, rp->pe_head, rp->pe_tail, bi);
+ GNUNET_CONTAINER_MDLL_remove (PR, prd->pr_head, prd->pr_tail, bi);
+ GNUNET_free (bi);
}
plan_count--;
GNUNET_free (rp);
GNUNET_free (pp);
}
+
/**
* Get the last transmission attempt time for the request plan list
- * referenced by 'rpr_head', that was sent to 'sender'
+ * referenced by 'pr_head', that was sent to 'sender'
*
- * @param rpr_head request plan reference list to check.
+ * @param pr_head request plan reference list to check.
* @param sender the peer that we've sent the request to.
- * @param result the timestamp to fill.
+ * @param result the timestamp to fill, set to "FOREVER" if never transmitted
* @return GNUNET_YES if 'result' was changed, GNUNET_NO otherwise.
*/
int
GSF_request_plan_reference_get_last_transmission_ (
- struct GSF_RequestPlanReference *rpr_head, struct GSF_ConnectedPeer *sender,
+ struct GSF_PendingRequestPlanBijection *pr_head, struct GSF_ConnectedPeer *sender,
struct GNUNET_TIME_Absolute *result)
{
- struct GSF_RequestPlanReference *rpr;
- for (rpr = rpr_head; rpr; rpr = rpr->next)
+ struct GSF_PendingRequestPlanBijection *bi;
+
+ for (bi = pr_head; NULL != bi; bi = bi->next_PR)
{
- if (rpr->rp->pp->cp == sender)
+ if (bi->rp->pp->cp == sender)
{
- *result = rpr->rp->last_transmission;
+ if (0 == bi->rp->last_transmission.abs_value_us)
+ *result = GNUNET_TIME_UNIT_FOREVER_ABS;
+ else
+ *result = bi->rp->last_transmission;
return GNUNET_YES;
}
}
return GNUNET_NO;
}
+
/**
* Notify the plan about a request being done; destroy all entries
* associated with this request.
{
struct GSF_RequestPlan *rp;
struct GSF_PendingRequestData *prd;
- struct GSF_RequestPlanReference *rpr;
+ struct GSF_PendingRequestPlanBijection *bi;
prd = GSF_pending_request_get_data_ (pr);
- while (NULL != (rpr = prd->rpr_head))
+ while (NULL != (bi = prd->pr_head))
{
- GNUNET_CONTAINER_DLL_remove (prd->rpr_head, prd->rpr_tail, rpr);
- rp = rpr->rp;
- GNUNET_CONTAINER_DLL_remove (rp->prl_head, rp->prl_tail, rpr->prl);
- if (NULL == rp->prl_head)
+ rp = bi->rp;
+ GNUNET_CONTAINER_MDLL_remove (PR, prd->pr_head, prd->pr_tail, bi);
+ GNUNET_CONTAINER_MDLL_remove (PE, rp->pe_head, rp->pe_tail, bi);
+ if (NULL == rp->pe_head)
{
GNUNET_CONTAINER_heap_remove_node (rp->hn);
plan_count--;
GNUNET_break (GNUNET_YES ==
GNUNET_CONTAINER_multihashmap_remove (rp->pp->plan_map,
&GSF_pending_request_get_data_
- (rpr->prl->pr)->query,
+ (bi->pr)->query,
rp));
GNUNET_free (rp);
}
- GNUNET_free (rpr->prl);
- GNUNET_free (rpr);
+ GNUNET_free (bi);
}
GNUNET_STATISTICS_set (GSF_stats, gettext_noop ("# query plan entries"),
plan_count, GNUNET_NO);