/*
This file is part of GNUnet
- (C) 2013, 2014 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2013, 2014 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @file set/gnunet-service-set.c
*/
#include "gnunet-service-set.h"
#include "gnunet-service-set_protocol.h"
+#include "gnunet_statistics_service.h"
/**
* How long do we hold on to an incoming channel if there is
};
+struct LazyCopyRequest
+{
+ struct Set *source_set;
+ uint32_t cookie;
+
+ struct LazyCopyRequest *prev;
+ struct LazyCopyRequest *next;
+};
+
+
/**
* Configuration of our local peer.
*/
*/
static struct Operation *incoming_tail;
+static struct LazyCopyRequest *lazy_copy_head;
+static struct LazyCopyRequest *lazy_copy_tail;
+
+static uint32_t lazy_copy_cookie = 1;
+
/**
* Counter for allocating unique IDs for clients, used to identify
* incoming operation requests from remote peers, that the client can
*/
static uint32_t suggest_id = 1;
+/**
+ * Statistics handle.
+ */
+struct GNUNET_STATISTICS_Handle *_GSS_statistics;
+
/**
* Get set that is owned by the given client, if any.
const struct GNUNET_HashCode *key,
void *value)
{
- struct GarbageContext *gc = cls;
- struct ElementEntry *ee = value;
-
- if (GNUNET_YES != ee->removed)
- return GNUNET_OK;
- if ( (gc->max_op_generation < ee->generation_added) ||
- (ee->generation_removed > gc->min_op_generation) )
- {
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (gc->map,
- key,
- ee));
- GNUNET_free (ee);
- }
+ //struct GarbageContext *gc = cls;
+ //struct ElementEntry *ee = value;
+
+ //if (GNUNET_YES != ee->removed)
+ // return GNUNET_OK;
+ //if ( (gc->max_op_generation < ee->generation_added) ||
+ // (ee->generation_removed > gc->min_op_generation) )
+ //{
+ // GNUNET_assert (GNUNET_YES ==
+ // GNUNET_CONTAINER_multihashmap_remove (gc->map,
+ // key,
+ // ee));
+ // GNUNET_free (ee);
+ //}
return GNUNET_OK;
}
gc.max_op_generation = GNUNET_MAX (gc.max_op_generation,
op->generation_created);
}
- gc.map = set->elements;
- GNUNET_CONTAINER_multihashmap_iterate (set->elements,
+ gc.map = set->content->elements;
+ GNUNET_CONTAINER_multihashmap_iterate (set->content->elements,
&garbage_collect_cb,
&gc);
}
+int
+is_excluded_generation (unsigned int generation,
+ struct GenerationRange *excluded,
+ unsigned int excluded_size)
+{
+ unsigned int i;
+
+ for (i = 0; i < excluded_size; i++)
+ {
+ if ( (generation >= excluded[i].start) && (generation < excluded[i].end) )
+ return GNUNET_YES;
+ }
+
+ return GNUNET_NO;
+}
+
+
+int
+is_element_of_generation (struct ElementEntry *ee,
+ unsigned int query_generation,
+ struct GenerationRange *excluded,
+ unsigned int excluded_size)
+{
+ struct MutationEvent *mut;
+ int is_present;
+ unsigned int i;
+
+ GNUNET_assert (NULL != ee->mutations);
+
+ if (GNUNET_YES == is_excluded_generation (query_generation, excluded, excluded_size))
+ {
+ GNUNET_break (0);
+ return GNUNET_NO;
+ }
+
+ is_present = GNUNET_NO;
+
+ /* Could be made faster with binary search, but lists
+ are small, so why bother. */
+ for (i = 0; i < ee->mutations_size; i++)
+ {
+ mut = &ee->mutations[i];
+
+ if (mut->generation > query_generation)
+ {
+ /* The mutation doesn't apply to our generation
+ anymore. We can'b break here, since mutations aren't
+ sorted by generation. */
+ continue;
+ }
+
+ if (GNUNET_YES == is_excluded_generation (mut->generation, excluded, excluded_size))
+ {
+ /* The generation is excluded (because it belongs to another
+ fork via a lazy copy) and thus mutations aren't considered
+ for membership testing. */
+ continue;
+ }
+
+ /* This would be an inconsistency in how we manage mutations. */
+ if ( (GNUNET_YES == is_present) && (GNUNET_YES == mut->added) )
+ GNUNET_assert (0);
+
+ /* Likewise. */
+ if ( (GNUNET_NO == is_present) && (GNUNET_NO == mut->added) )
+ GNUNET_assert (0);
+
+ is_present = mut->added;
+ }
+
+ return is_present;
+}
+
+
+int
+_GSS_is_element_of_set (struct ElementEntry *ee,
+ struct Set *set)
+{
+ return is_element_of_generation (ee,
+ set->current_generation,
+ set->excluded_generations,
+ set->excluded_generations_size);
+}
+
+
+static int
+is_element_of_iteration (struct ElementEntry *ee,
+ struct Set *set)
+{
+ return is_element_of_generation (ee,
+ set->iter_generation,
+ set->excluded_generations,
+ set->excluded_generations_size);
+}
+
+
+int
+_GSS_is_element_of_operation (struct ElementEntry *ee,
+ struct Operation *op)
+{
+ return is_element_of_generation (ee,
+ op->generation_created,
+ op->spec->set->excluded_generations,
+ op->spec->set->excluded_generations_size);
+}
+
/**
* Destroy the given operation. Call the implementation-specific
{
struct ElementEntry *ee = value;
+ GNUNET_free_non_null (ee->mutations);
+
GNUNET_free (ee);
return GNUNET_YES;
}
set->iter = NULL;
set->iteration_id++;
}
- if (NULL != set->elements)
{
- GNUNET_CONTAINER_multihashmap_iterate (set->elements,
- &destroy_elements_iterator,
- NULL);
- GNUNET_CONTAINER_multihashmap_destroy (set->elements);
- set->elements = NULL;
+ struct SetContent *content;
+ struct PendingMutation *pm;
+ struct PendingMutation *pm_current;
+
+ content = set->content;
+
+ // discard any pending mutations that reference this set
+ pm = content->pending_mutations_head;
+ while (NULL != pm)
+ {
+ pm_current = pm;
+ pm = pm->next;
+ if (pm_current-> set == set)
+ GNUNET_CONTAINER_DLL_remove (content->pending_mutations_head,
+ content->pending_mutations_tail,
+ pm_current);
+
+ }
+
+ set->content = NULL;
+ GNUNET_assert (0 != content->refcount);
+ content->refcount -= 1;
+ if (0 == content->refcount)
+ {
+ GNUNET_assert (NULL != content->elements);
+ GNUNET_CONTAINER_multihashmap_iterate (content->elements,
+ &destroy_elements_iterator,
+ NULL);
+ GNUNET_CONTAINER_multihashmap_destroy (content->elements);
+ content->elements = NULL;
+ GNUNET_free (content);
+ }
}
+ GNUNET_free_non_null (set->excluded_generations);
+ set->excluded_generations = NULL;
GNUNET_CONTAINER_DLL_remove (sets_head,
sets_tail,
set);
+
+ // remove set from pending copy requests
+ {
+ struct LazyCopyRequest *lcr;
+ lcr = lazy_copy_head;
+ while (NULL != lcr)
+ {
+ struct LazyCopyRequest *lcr_current;
+ lcr_current = lcr;
+ lcr = lcr->next;
+ if (lcr_current->source_set == set)
+ GNUNET_CONTAINER_DLL_remove (lazy_copy_head,
+ lazy_copy_tail,
+ lcr_current);
+ }
+ }
+
GNUNET_free (set);
}
static void
incoming_destroy (struct Operation *incoming)
{
+ struct GNUNET_CADET_Channel *channel;
+
GNUNET_assert (GNUNET_YES == incoming->is_incoming);
GNUNET_CONTAINER_DLL_remove (incoming_head,
incoming_tail,
incoming);
- if (GNUNET_SCHEDULER_NO_TASK != incoming->timeout_task)
+ if (NULL != incoming->timeout_task)
{
GNUNET_SCHEDULER_cancel (incoming->timeout_task);
- incoming->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ incoming->timeout_task = NULL;
}
/* make sure that the tunnel end handler will not destroy us again */
incoming->vt = NULL;
GNUNET_MQ_destroy (incoming->mq);
incoming->mq = NULL;
}
- if (NULL != incoming->channel)
+ if (NULL != (channel = incoming->channel))
{
- GNUNET_CADET_channel_destroy (incoming->channel);
incoming->channel = NULL;
+ GNUNET_CADET_channel_destroy (channel);
}
}
incoming->suggest_id = suggest_id++;
if (0 == suggest_id)
suggest_id++;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != incoming->timeout_task);
+ GNUNET_assert (NULL != incoming->timeout_task);
GNUNET_SCHEDULER_cancel (incoming->timeout_task);
- incoming->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ incoming->timeout_task = NULL;
mqm = GNUNET_MQ_msg_nested_mh (cmsg,
GNUNET_MESSAGE_TYPE_SET_REQUEST,
incoming->spec->context_msg);
/* Make a copy of the nested_context (application-specific context
information that is opaque to set) so we can pass it to the
listener later on */
- if (NULL != spec->context_msg)
+ if (NULL != nested_context)
spec->context_msg = GNUNET_copy_message (nested_context);
spec->operation = ntohl (msg->operation);
spec->app_id = msg->app_id;
&msg->app_id);
if (NULL == listener)
{
- GNUNET_break (GNUNET_SCHEDULER_NO_TASK != op->timeout_task);
+ GNUNET_break (NULL != op->timeout_task);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"No matching listener for incoming request (op %u, app %s), waiting with timeout\n",
ntohl (msg->operation),
}
+static void
+execute_add (struct Set *set,
+ const struct GNUNET_MessageHeader *m)
+{
+ const struct GNUNET_SET_ElementMessage *msg;
+ struct GNUNET_SET_Element el;
+ struct ElementEntry *ee;
+ struct GNUNET_HashCode hash;
+
+ GNUNET_assert (GNUNET_MESSAGE_TYPE_SET_ADD == ntohs (m->type));
+
+ msg = (const struct GNUNET_SET_ElementMessage *) m;
+ el.size = ntohs (m->size) - sizeof *msg;
+ el.data = &msg[1];
+ el.element_type = ntohs (msg->element_type);
+ GNUNET_SET_element_hash (&el, &hash);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client inserts element %s of size %u\n",
+ GNUNET_h2s (&hash),
+ el.size);
+
+ ee = GNUNET_CONTAINER_multihashmap_get (set->content->elements,
+ &hash);
+
+ if (NULL == ee)
+ {
+ ee = GNUNET_malloc (el.size + sizeof *ee);
+ ee->element.size = el.size;
+ memcpy (&ee[1],
+ el.data,
+ el.size);
+ ee->element.data = &ee[1];
+ ee->element.element_type = el.element_type;
+ ee->remote = GNUNET_NO;
+ ee->mutations = NULL;
+ ee->mutations_size = 0;
+ ee->element_hash = hash;
+ GNUNET_break (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_put (set->content->elements,
+ &ee->element_hash,
+ ee,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ }
+ else if (GNUNET_YES == _GSS_is_element_of_set (ee, set))
+ {
+ /* same element inserted twice */
+ return;
+ }
+
+ {
+ struct MutationEvent mut = {
+ .generation = set->current_generation,
+ .added = GNUNET_YES
+ };
+ GNUNET_array_append (ee->mutations, ee->mutations_size, mut);
+ }
+
+ set->vt->add (set->state, ee);
+}
+
+
+static void
+execute_remove (struct Set *set,
+ const struct GNUNET_MessageHeader *m)
+{
+ const struct GNUNET_SET_ElementMessage *msg;
+ struct GNUNET_SET_Element el;
+ struct ElementEntry *ee;
+ struct GNUNET_HashCode hash;
+
+ GNUNET_assert (GNUNET_MESSAGE_TYPE_SET_REMOVE == ntohs (m->type));
+
+ msg = (const struct GNUNET_SET_ElementMessage *) m;
+ el.size = ntohs (m->size) - sizeof *msg;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client removes element of size %u\n",
+ el.size);
+ el.data = &msg[1];
+ el.element_type = ntohs (msg->element_type);
+ GNUNET_SET_element_hash (&el, &hash);
+ ee = GNUNET_CONTAINER_multihashmap_get (set->content->elements,
+ &hash);
+ if (NULL == ee)
+ {
+ /* Client tried to remove non-existing element. */
+ return;
+ }
+ if (GNUNET_NO == _GSS_is_element_of_set (ee, set))
+ {
+ /* Client tried to remove element twice */
+ return;
+ }
+ else
+ {
+ struct MutationEvent mut = {
+ .generation = set->current_generation,
+ .added = GNUNET_NO
+ };
+ GNUNET_array_append (ee->mutations, ee->mutations_size, mut);
+ }
+ set->vt->remove (set->state, ee);
+}
+
+
+
+static void
+execute_mutation (struct Set *set,
+ const struct GNUNET_MessageHeader *m)
+{
+ switch (ntohs (m->type))
+ {
+ case GNUNET_MESSAGE_TYPE_SET_ADD:
+ execute_add (set, m);
+ break;
+ case GNUNET_MESSAGE_TYPE_SET_REMOVE:
+ execute_remove (set, m);
+ break;
+ default:
+ GNUNET_break (0);
+ }
+}
+
+
+
/**
* Send the next element of a set to the set's client. The next element is given by
* the set's current hashmap iterator. The set's iterator will be set to NULL if there
struct GNUNET_SET_IterResponseMessage *msg;
GNUNET_assert (NULL != set->iter);
+
+again:
+
ret = GNUNET_CONTAINER_multihashmap_iterator_next (set->iter,
NULL,
(const void **) &ee);
if (GNUNET_NO == ret)
{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Iteration on %p done.\n",
+ (void *) set);
ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_SET_ITER_DONE);
GNUNET_CONTAINER_multihashmap_iterator_destroy (set->iter);
set->iter = NULL;
set->iteration_id++;
+
+ GNUNET_assert (set->content->iterator_count > 0);
+ set->content->iterator_count -= 1;
+
+ if (0 == set->content->iterator_count)
+ {
+ while (NULL != set->content->pending_mutations_head)
+ {
+ struct PendingMutation *pm;
+
+ pm = set->content->pending_mutations_head;
+ GNUNET_CONTAINER_DLL_remove (set->content->pending_mutations_head,
+ set->content->pending_mutations_tail,
+ pm);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Executing pending mutation on %p.\n",
+ (void *) pm->set);
+ execute_mutation (pm->set, pm->mutation_message);
+ GNUNET_free (pm->mutation_message);
+ GNUNET_free (pm);
+ }
+ }
+
}
else
{
GNUNET_assert (NULL != ee);
+
+ if (GNUNET_NO == is_element_of_iteration (ee, set))
+ goto again;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending iteration element on %p.\n",
+ (void *) set);
ev = GNUNET_MQ_msg_extra (msg,
ee->element.size,
GNUNET_MESSAGE_TYPE_SET_ITER_ELEMENT);
memcpy (&msg[1],
ee->element.data,
ee->element.size);
- msg->element_type = ee->element.element_type;
+ msg->element_type = htons (ee->element.element_type);
msg->iteration_id = htons (set->iteration_id);
}
GNUNET_MQ_send (set->client_mq, ev);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Iterating union set with %u elements\n",
- GNUNET_CONTAINER_multihashmap_size (set->elements));
+ "Iterating set %p in gen %u with %u content elements\n",
+ (void *) set,
+ set->current_generation,
+ GNUNET_CONTAINER_multihashmap_size (set->content->elements));
GNUNET_SERVER_receive_done (client,
GNUNET_OK);
- set->iter = GNUNET_CONTAINER_multihashmap_iterator_create (set->elements);
+ set->content->iterator_count += 1;
+ set->iter = GNUNET_CONTAINER_multihashmap_iterator_create (set->content->elements);
+ set->iter_generation = set->current_generation;
send_client_element (set);
}
msg = (const struct GNUNET_SET_CreateMessage *) m;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Client created new set (operation %u)\n",
- ntohs (msg->operation));
+ ntohl (msg->operation));
if (NULL != set_get (client))
{
/* There can only be one set per client */
GNUNET_SERVER_client_disconnect (client);
return;
}
+ set->operation = ntohl (msg->operation);
set->state = set->vt->create ();
- set->elements = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
+ if (NULL == set->state)
+ {
+ /* initialization failed (i.e. out of memory) */
+ GNUNET_free (set);
+ GNUNET_SERVER_client_disconnect (client);
+ return;
+ }
+ set->content = GNUNET_new (struct SetContent);
+ set->content->refcount = 1;
+ set->content->elements = GNUNET_CONTAINER_multihashmap_create (1, GNUNET_YES);
set->client = client;
set->client_mq = GNUNET_MQ_queue_for_server_client (client);
GNUNET_CONTAINER_DLL_insert (sets_head,
}
+
/**
- * Called when a client wants to add an element to a set it inhabits.
+ * Called when a client wants to add or remove an element to a set it inhabits.
*
* @param cls unused
* @param client client that sent the message
* @param m message sent by the client
*/
static void
-handle_client_add (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *m)
+handle_client_mutation (void *cls,
+ struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *m)
{
struct Set *set;
- const struct GNUNET_SET_ElementMessage *msg;
- struct GNUNET_SET_Element el;
- struct ElementEntry *ee;
- struct ElementEntry *ee_dup;
set = set_get (client);
if (NULL == set)
GNUNET_SERVER_client_disconnect (client);
return;
}
+
GNUNET_SERVER_receive_done (client,
GNUNET_OK);
- msg = (const struct GNUNET_SET_ElementMessage *) m;
- el.size = ntohs (m->size) - sizeof *msg;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client inserts element of size %u\n",
- el.size);
- el.data = &msg[1];
- ee = GNUNET_malloc (el.size + sizeof *ee);
- ee->element.size = el.size;
- memcpy (&ee[1],
- el.data,
- el.size);
- ee->element.data = &ee[1];
- ee->generation_added = set->current_generation;
- ee->remote = GNUNET_NO;
- GNUNET_CRYPTO_hash (ee->element.data,
- el.size,
- &ee->element_hash);
- ee_dup = GNUNET_CONTAINER_multihashmap_get (set->elements,
- &ee->element_hash);
- if (NULL != ee_dup)
+
+ if (0 != set->content->iterator_count)
{
- /* same element inserted twice */
- GNUNET_break (0);
- GNUNET_free (ee);
+ struct PendingMutation *pm;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Scheduling mutation on set\n");
+
+ pm = GNUNET_new (struct PendingMutation);
+ pm->mutation_message = GNUNET_copy_message (m);
+ pm->set = set;
+ GNUNET_CONTAINER_DLL_insert (set->content->pending_mutations_head,
+ set->content->pending_mutations_tail,
+ pm);
return;
}
- GNUNET_break (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_put (set->elements,
- &ee->element_hash,
- ee,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- set->vt->add (set->state, ee);
+
+ execute_mutation (set, m);
}
/**
- * Called when a client wants to remove an element from a set it
- * inhabits.
+ * Advance the current generation of a set,
+ * adding exclusion ranges if necessary.
*
- * @param cls unused
- * @param client client that sent the message
- * @param m message sent by the client
+ * @param set the set where we want to advance the generation
*/
static void
-handle_client_remove (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *m)
+advance_generation (struct Set *set)
{
- struct Set *set;
- const struct GNUNET_SET_ElementMessage *msg;
- struct GNUNET_SET_Element el;
- struct ElementEntry *ee;
- struct GNUNET_HashCode hash;
+ struct GenerationRange r;
- set = set_get (client);
- if (NULL == set)
- {
- /* client without a set requested an operation */
- GNUNET_break (0);
- GNUNET_SERVER_client_disconnect (client);
- return;
- }
- GNUNET_SERVER_receive_done (client,
- GNUNET_OK);
- msg = (const struct GNUNET_SET_ElementMessage *) m;
- el.size = ntohs (m->size) - sizeof *msg;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Client removes element of size %u\n",
- el.size);
- el.data = &msg[1];
- GNUNET_CRYPTO_hash (el.data,
- el.size,
- &hash);
- ee = GNUNET_CONTAINER_multihashmap_get (set->elements,
- &hash);
- if (NULL == ee)
+ if (set->current_generation == set->content->latest_generation)
{
- /* Client tried to remove non-existing element */
- GNUNET_break (0);
- return;
- }
- if (GNUNET_YES == ee->removed)
- {
- /* Client tried to remove element twice */
- GNUNET_break (0);
+ set->content->latest_generation += 1;
+ set->current_generation += 1;
return;
}
- ee->removed = GNUNET_YES;
- ee->generation_removed = set->current_generation;
- set->vt->remove (set->state, ee);
-}
+ GNUNET_assert (set->current_generation < set->content->latest_generation);
+
+ r.start = set->current_generation + 1;
+ r.end = set->content->latest_generation + 1;
+
+ set->content->latest_generation = r.end;
+ set->current_generation = r.end;
+
+ GNUNET_array_append (set->excluded_generations,
+ set->excluded_generations_size,
+ r);
+}
/**
* Called when a client wants to initiate a set operation with another
UINT32_MAX);
spec->peer = msg->target_peer;
spec->set = set;
- spec->result_mode = ntohs (msg->result_mode);
+ spec->result_mode = ntohl (msg->result_mode);
spec->client_request_id = ntohl (msg->request_id);
context = GNUNET_MQ_extract_nested_mh (msg);
op = GNUNET_new (struct Operation);
op->spec = spec;
- op->generation_created = set->current_generation++;
+
+ // Advance generation values, so that
+ // mutations won't interfer with the running operation.
+ op->generation_created = set->current_generation;
+ advance_generation (set);
+
op->vt = set->vt;
GNUNET_CONTAINER_DLL_insert (set->ops_head,
set->ops_tail,
}
+/**
+ * Handle a request from the client to
+ * copy a set.
+ *
+ * @param cls unused
+ * @param client the client
+ * @param mh the message
+ */
+static void
+handle_client_copy_lazy_prepare (void *cls,
+ struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *mh)
+{
+ struct Set *set;
+ struct LazyCopyRequest *cr;
+ struct GNUNET_MQ_Envelope *ev;
+ struct GNUNET_SET_CopyLazyResponseMessage *resp_msg;
+
+ set = set_get (client);
+ if (NULL == set)
+ {
+ /* client without a set requested an operation */
+ GNUNET_break (0);
+ GNUNET_SERVER_client_disconnect (client);
+ return;
+ }
+
+ cr = GNUNET_new (struct LazyCopyRequest);
+
+ cr->cookie = lazy_copy_cookie;
+ lazy_copy_cookie += 1;
+ cr->source_set = set;
+
+ GNUNET_CONTAINER_DLL_insert (lazy_copy_head,
+ lazy_copy_tail,
+ cr);
+
+
+ ev = GNUNET_MQ_msg (resp_msg,
+ GNUNET_MESSAGE_TYPE_SET_COPY_LAZY_RESPONSE);
+ resp_msg->cookie = cr->cookie;
+ GNUNET_MQ_send (set->client_mq, ev);
+
+
+ GNUNET_SERVER_receive_done (client,
+ GNUNET_OK);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client requested lazy copy\n");
+}
+
+
+/**
+ * Handle a request from the client to
+ * connect to a copy of a set.
+ *
+ * @param cls unused
+ * @param client the client
+ * @param mh the message
+ */
+static void
+handle_client_copy_lazy_connect (void *cls,
+ struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *mh)
+{
+ struct LazyCopyRequest *cr;
+ const struct GNUNET_SET_CopyLazyConnectMessage *msg =
+ (const struct GNUNET_SET_CopyLazyConnectMessage *) mh;
+ struct Set *set;
+ int found;
+
+ if (NULL != set_get (client))
+ {
+ /* There can only be one set per client */
+ GNUNET_break (0);
+ GNUNET_SERVER_client_disconnect (client);
+ return;
+ }
+
+ found = GNUNET_NO;
+
+ for (cr = lazy_copy_head; NULL != cr; cr = cr->next)
+ {
+ if (cr->cookie == msg->cookie)
+ {
+ found = GNUNET_YES;
+ break;
+ }
+ }
+
+ if (GNUNET_NO == found)
+ {
+ /* client asked for copy with cookie we don't know */
+ GNUNET_break (0);
+ GNUNET_SERVER_client_disconnect (client);
+ return;
+ }
+
+ GNUNET_CONTAINER_DLL_remove (lazy_copy_head,
+ lazy_copy_tail,
+ cr);
+
+ set = GNUNET_new (struct Set);
+
+ switch (cr->source_set->operation)
+ {
+ case GNUNET_SET_OPERATION_INTERSECTION:
+ set->vt = _GSS_intersection_vt ();
+ break;
+ case GNUNET_SET_OPERATION_UNION:
+ set->vt = _GSS_union_vt ();
+ break;
+ default:
+ GNUNET_assert (0);
+ return;
+ }
+
+ if (NULL == set->vt->copy_state) {
+ /* Lazy copy not supported for this set operation */
+ GNUNET_break (0);
+ GNUNET_free (set);
+ GNUNET_free (cr);
+ GNUNET_SERVER_client_disconnect (client);
+ return;
+ }
+
+ set->operation = cr->source_set->operation;
+ set->state = set->vt->copy_state (cr->source_set);
+ set->content = cr->source_set->content;
+ set->content->refcount += 1;
+
+ set->current_generation = cr->source_set->current_generation;
+ set->excluded_generations_size = cr->source_set->excluded_generations_size;
+ set->excluded_generations = GNUNET_memdup (cr->source_set->excluded_generations,
+ set->excluded_generations_size * sizeof (struct GenerationRange));
+
+ /* Advance the generation of the new set, so that mutations to the
+ of the cloned set and the source set are independent. */
+ advance_generation (set);
+
+
+ set->client = client;
+ set->client_mq = GNUNET_MQ_queue_for_server_client (client);
+ GNUNET_CONTAINER_DLL_insert (sets_head,
+ sets_tail,
+ set);
+
+ GNUNET_free (cr);
+
+ GNUNET_SERVER_receive_done (client,
+ GNUNET_OK);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Client connected to lazy set\n");
+}
+
+
/**
* Handle a request from the client to
* cancel a running set operation.
op);
op->spec->client_request_id = ntohl (msg->request_id);
op->spec->result_mode = ntohl (msg->result_mode);
- op->generation_created = set->current_generation++;
+
+ // Advance generation values, so that
+ // mutations won't interfer with the running operation.
+ op->generation_created = set->current_generation;
+ advance_generation (set);
+
op->vt = set->vt;
op->vt->accept (op);
GNUNET_SERVER_receive_done (client,
* @param tc context information (why was this task triggered now)
*/
static void
-shutdown_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+shutdown_task (void *cls)
{
while (NULL != incoming_head)
incoming_destroy (incoming_head);
GNUNET_CADET_disconnect (cadet);
cadet = NULL;
}
+ GNUNET_STATISTICS_destroy (_GSS_statistics, GNUNET_YES);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"handled shutdown request\n");
}
* @param tc context information (why was this task triggered now)
*/
static void
-incoming_timeout_cb (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+incoming_timeout_cb (void *cls)
{
struct Operation *incoming = cls;
+ const struct GNUNET_SCHEDULER_TaskContext *tc;
- incoming->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ incoming->timeout_task = NULL;
GNUNET_assert (GNUNET_YES == incoming->is_incoming);
+ tc = GNUNET_SCHEDULER_get_task_context ();
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"channel_end_cb called\n");
op->channel = NULL;
+ op->keep++;
/* the vt can be null if a client already requested canceling op. */
if (NULL != op->vt)
{
"calling peer disconnect due to channel end\n");
op->vt->peer_disconnect (op);
}
- if (GNUNET_YES != op->keep)
+ op->keep--;
+ if (0 == op->keep)
{
/* cadet will never call us with the context again! */
GNUNET_free (op);
* @param cfg configuration to use
*/
static void
-run (void *cls, struct GNUNET_SERVER_Handle *server,
+run (void *cls,
+ struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
static const struct GNUNET_SERVER_MessageHandler server_handlers[] = {
{ &handle_client_iter_ack, NULL,
GNUNET_MESSAGE_TYPE_SET_ITER_ACK,
sizeof (struct GNUNET_SET_IterAckMessage) },
- { &handle_client_add, NULL,
+ { &handle_client_mutation, NULL,
GNUNET_MESSAGE_TYPE_SET_ADD,
0},
{ &handle_client_create_set, NULL,
{ &handle_client_reject, NULL,
GNUNET_MESSAGE_TYPE_SET_REJECT,
sizeof (struct GNUNET_SET_RejectMessage)},
- { &handle_client_remove, NULL,
+ { &handle_client_mutation, NULL,
GNUNET_MESSAGE_TYPE_SET_REMOVE,
0},
{ &handle_client_cancel, NULL,
GNUNET_MESSAGE_TYPE_SET_CANCEL,
sizeof (struct GNUNET_SET_CancelMessage)},
+ { &handle_client_copy_lazy_prepare, NULL,
+ GNUNET_MESSAGE_TYPE_SET_COPY_LAZY_PREPARE,
+ sizeof (struct GNUNET_MessageHeader)},
+ { &handle_client_copy_lazy_connect, NULL,
+ GNUNET_MESSAGE_TYPE_SET_COPY_LAZY_CONNECT,
+ sizeof (struct GNUNET_SET_CopyLazyConnectMessage)},
{ NULL, NULL, 0, 0}
};
static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_P2P_OPERATION_REQUEST, 0},
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_IBF, 0},
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_P2P_ELEMENTS, 0},
- { &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_DONE, 0},
+ { &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_OFFER, 0},
+ { &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_INQUIRY, 0},
+ { &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_DEMAND, 0},
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_P2P_ELEMENT_REQUESTS, 0},
+ { &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_DONE, 0},
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_SE, 0},
+ { &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_UNION_P2P_SEC, 0},
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_INTERSECTION_P2P_ELEMENT_INFO, 0},
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_INTERSECTION_P2P_BF, 0},
{ &dispatch_p2p_message, GNUNET_MESSAGE_TYPE_SET_INTERSECTION_P2P_DONE, 0},
&handle_client_disconnect, NULL);
GNUNET_SERVER_add_handlers (server,
server_handlers);
+ _GSS_statistics = GNUNET_STATISTICS_create ("set", cfg);
cadet = GNUNET_CADET_connect (cfg, NULL,
&channel_new_cb,
&channel_end_cb,
projects / oweals / gnunet.git / blobdiff