2 This file is part of GNUnet.
3 (C) 2009, 2010 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
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17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 * @file statistics/statistics_api.c
23 * @brief API of the statistics service
24 * @author Christian Grothoff
27 #include "gnunet_client_lib.h"
28 #include "gnunet_constants.h"
29 #include "gnunet_container_lib.h"
30 #include "gnunet_protocols.h"
31 #include "gnunet_server_lib.h"
32 #include "gnunet_statistics_service.h"
33 #include "gnunet_strings_lib.h"
34 #include "statistics.h"
37 * How long do we wait until a statistics request for setting
38 * a value times out? (The update will be lost if the
39 * service does not react within this timeframe).
41 #define SET_TRANSMIT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 2)
57 * Entry kept for each value we are watching.
59 struct GNUNET_STATISTICS_WatchEntry
63 * What subsystem is this action about? (never NULL)
68 * What value is this action about? (never NULL)
75 GNUNET_STATISTICS_Iterator proc;
86 * Linked list of things we still need to do.
88 struct GNUNET_STATISTICS_GetHandle
92 * This is a doubly linked list.
94 struct GNUNET_STATISTICS_GetHandle *next;
97 * This is a doubly linked list.
99 struct GNUNET_STATISTICS_GetHandle *prev;
102 * Main statistics handle.
104 struct GNUNET_STATISTICS_Handle *sh;
107 * What subsystem is this action about? (can be NULL)
112 * What value is this action about? (can be NULL)
117 * Continuation to call once action is complete.
119 GNUNET_STATISTICS_Callback cont;
122 * Function to call (for GET actions only).
124 GNUNET_STATISTICS_Iterator proc;
127 * Closure for proc and cont.
132 * Timeout for this action.
134 struct GNUNET_TIME_Absolute timeout;
142 * Flag for SET/UPDATE actions.
147 * Has the current iteration been aborted; for GET actions.
152 * Is this a GET, SET, UPDATE or WATCH?
154 enum ActionType type;
157 * Size of the message that we will be transmitting.
165 * Handle for the service.
167 struct GNUNET_STATISTICS_Handle
170 * Name of our subsystem.
175 * Configuration to use.
177 const struct GNUNET_CONFIGURATION_Handle *cfg;
180 * Socket (if available).
182 struct GNUNET_CLIENT_Connection *client;
185 * Currently pending transmission request.
187 struct GNUNET_CLIENT_TransmitHandle *th;
190 * Head of the linked list of pending actions (first action
193 struct GNUNET_STATISTICS_GetHandle *action_head;
196 * Tail of the linked list of actions (for fast append).
198 struct GNUNET_STATISTICS_GetHandle *action_tail;
201 * Action we are currently busy with (action request has been
202 * transmitted, we're now receiving the response from the
205 struct GNUNET_STATISTICS_GetHandle *current;
208 * Array of watch entries.
210 struct GNUNET_STATISTICS_WatchEntry **watches;
213 * Task doing exponential back-off trying to reconnect.
215 GNUNET_SCHEDULER_TaskIdentifier backoff_task;
218 * Time for next connect retry.
220 struct GNUNET_TIME_Relative backoff;
223 * Size of the 'watches' array.
225 unsigned int watches_size;
228 * Should this handle auto-destruct once all actions have
234 * Are we currently receiving from the service?
243 * Schedule the next action to be performed.
245 static void schedule_action (struct GNUNET_STATISTICS_Handle *h);
248 * Try to (re)connect to the statistics service.
250 * @return GNUNET_YES on success, GNUNET_NO on failure.
252 static int try_connect (struct GNUNET_STATISTICS_Handle *ret);
256 insert_ai (struct GNUNET_STATISTICS_Handle *h,
257 struct GNUNET_STATISTICS_GetHandle *ai)
259 GNUNET_CONTAINER_DLL_insert_after (h->action_head,
260 h->action_tail, h->action_tail, ai);
261 if (h->action_head == ai)
267 schedule_watch_request (struct GNUNET_STATISTICS_Handle *h,
268 struct GNUNET_STATISTICS_WatchEntry *watch)
271 struct GNUNET_STATISTICS_GetHandle *ai;
276 GNUNET_assert (h != NULL);
277 if (GNUNET_YES != try_connect (h))
282 slen = strlen (watch->subsystem) + 1;
283 nlen = strlen (watch->name) + 1;
284 nsize = sizeof (struct GNUNET_MessageHeader) + slen + nlen;
285 if (nsize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
290 ai = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_GetHandle));
292 ai->subsystem = GNUNET_strdup (watch->subsystem);
293 ai->name = GNUNET_strdup (watch->name);
294 ai->timeout = GNUNET_TIME_UNIT_FOREVER_ABS;
296 ai->type = ACTION_WATCH;
297 ai->proc = watch->proc;
298 ai->cls = watch->proc_cls;
304 * Try to (re)connect to the statistics service.
306 * @return GNUNET_YES on success, GNUNET_NO on failure.
309 try_connect (struct GNUNET_STATISTICS_Handle *ret)
313 if (ret->client != NULL)
315 ret->client = GNUNET_CLIENT_connect ("statistics", ret->cfg);
316 if (ret->client != NULL)
318 for (i = 0; i < ret->watches_size; i++)
319 schedule_watch_request (ret, ret->watches[i]);
323 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
324 _("Failed to connect to statistics service!\n"));
331 * Free memory associated with the given action item.
334 free_action_item (struct GNUNET_STATISTICS_GetHandle *ai)
336 GNUNET_free_non_null (ai->subsystem);
337 GNUNET_free_non_null (ai->name);
343 * GET processing is complete, tell client about it.
346 finish (struct GNUNET_STATISTICS_Handle *h, int code)
348 struct GNUNET_STATISTICS_GetHandle *pos = h->current;
354 if (pos->cont != NULL)
355 pos->cont (pos->cls, code);
356 free_action_item (pos);
362 * Process the message.
364 * @return GNUNET_OK if the message was well-formed
367 process_message (struct GNUNET_STATISTICS_Handle *h,
368 const struct GNUNET_MessageHeader *msg)
372 const struct GNUNET_STATISTICS_ReplyMessage *smsg;
375 if (h->current->aborted)
378 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
379 "Iteration was aborted, ignoring VALUE\n");
381 return GNUNET_OK; /* don't bother */
383 size = ntohs (msg->size);
384 if (size < sizeof (struct GNUNET_STATISTICS_ReplyMessage))
387 return GNUNET_SYSERR;
389 smsg = (const struct GNUNET_STATISTICS_ReplyMessage *) msg;
390 size -= sizeof (struct GNUNET_STATISTICS_ReplyMessage);
391 if (size != GNUNET_STRINGS_buffer_tokenize ((const char *) &smsg[1],
392 size, 2, &service, &name))
395 return GNUNET_SYSERR;
398 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
399 "Received valid statistic on `%s:%s': %llu\n",
400 service, name, GNUNET_ntohll (smsg->value));
403 h->current->proc (h->current->cls,
406 GNUNET_ntohll (smsg->value),
408 (ntohl (smsg->uid) & GNUNET_STATISTICS_PERSIST_BIT)))
411 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
412 "Processing of remaining statistics aborted by client.\n");
414 h->current->aborted = GNUNET_YES;
417 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "VALUE processed successfully\n");
424 process_watch_value (struct GNUNET_STATISTICS_Handle *h,
425 const struct GNUNET_MessageHeader *msg)
427 const struct GNUNET_STATISTICS_WatchValueMessage *wvm;
428 struct GNUNET_STATISTICS_WatchEntry *w;
431 if (sizeof (struct GNUNET_STATISTICS_WatchValueMessage) != ntohs (msg->size))
434 return GNUNET_SYSERR;
436 wvm = (const struct GNUNET_STATISTICS_WatchValueMessage *) msg;
437 GNUNET_break (0 == ntohl (wvm->reserved));
438 wid = ntohl (wvm->wid);
439 if (wid >= h->watches_size)
442 return GNUNET_SYSERR;
445 (void) w->proc (w->proc_cls,
448 GNUNET_ntohll (wvm->value),
449 0 != (ntohl (wvm->flags) & GNUNET_STATISTICS_PERSIST_BIT));
455 * Function called with messages from stats service.
458 * @param msg message received, NULL on timeout or fatal error
461 receive_stats (void *cls, const struct GNUNET_MessageHeader *msg)
463 struct GNUNET_STATISTICS_Handle *h = cls;
467 if (NULL != h->client)
469 GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
473 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
474 "Error receiving statistics from service, is the service running?\n");
476 finish (h, GNUNET_SYSERR);
479 switch (ntohs (msg->type))
481 case GNUNET_MESSAGE_TYPE_STATISTICS_END:
483 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received end of statistics marker\n");
485 h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
486 if (h->watches_size > 0)
488 GNUNET_CLIENT_receive (h->client,
489 &receive_stats, h, GNUNET_TIME_UNIT_FOREVER_REL);
493 h->receiving = GNUNET_NO;
495 finish (h, GNUNET_OK);
497 case GNUNET_MESSAGE_TYPE_STATISTICS_VALUE:
498 if (GNUNET_OK == process_message (h, msg))
500 /* finally, look for more! */
502 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
503 "Processing VALUE done, now reading more\n");
505 GNUNET_CLIENT_receive (h->client,
508 GNUNET_TIME_absolute_get_remaining
509 (h->current->timeout));
510 h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
515 case GNUNET_MESSAGE_TYPE_STATISTICS_WATCH_VALUE:
516 if (GNUNET_OK == process_watch_value (h, msg))
518 h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
519 GNUNET_assert (h->watches_size > 0);
520 GNUNET_CLIENT_receive (h->client,
521 &receive_stats, h, GNUNET_TIME_UNIT_FOREVER_REL);
530 if (NULL != h->client)
532 GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
535 finish (h, GNUNET_SYSERR);
540 * Transmit a GET request (and if successful, start to receive
544 transmit_get (struct GNUNET_STATISTICS_Handle *handle, size_t size, void *buf)
546 struct GNUNET_MessageHeader *hdr;
553 /* timeout / error */
555 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
556 "Transmission of request for statistics failed!\n");
558 finish (handle, GNUNET_SYSERR);
561 slen1 = strlen (handle->current->subsystem) + 1;
562 slen2 = strlen (handle->current->name) + 1;
563 msize = slen1 + slen2 + sizeof (struct GNUNET_MessageHeader);
564 GNUNET_assert (msize <= size);
565 hdr = (struct GNUNET_MessageHeader *) buf;
566 hdr->size = htons (msize);
567 hdr->type = htons (GNUNET_MESSAGE_TYPE_STATISTICS_GET);
568 GNUNET_assert (slen1 + slen2 ==
569 GNUNET_STRINGS_buffer_fill ((char *) &hdr[1],
572 handle->current->subsystem,
573 handle->current->name));
574 if (!handle->receiving)
577 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
578 "Transmission of GET done, now reading response\n");
580 handle->receiving = GNUNET_YES;
581 GNUNET_CLIENT_receive (handle->client,
584 GNUNET_TIME_absolute_get_remaining (handle->
592 * Transmit a WATCH request (and if successful, start to receive
596 transmit_watch (struct GNUNET_STATISTICS_Handle *handle, size_t size, void *buf)
598 struct GNUNET_MessageHeader *hdr;
605 /* timeout / error */
607 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
608 "Transmission of request for statistics failed!\n");
610 finish (handle, GNUNET_SYSERR);
614 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
615 "Transmitting watch request for `%s'\n", handle->current->name);
617 slen1 = strlen (handle->current->subsystem) + 1;
618 slen2 = strlen (handle->current->name) + 1;
619 msize = slen1 + slen2 + sizeof (struct GNUNET_MessageHeader);
620 GNUNET_assert (msize <= size);
621 hdr = (struct GNUNET_MessageHeader *) buf;
622 hdr->size = htons (msize);
623 hdr->type = htons (GNUNET_MESSAGE_TYPE_STATISTICS_WATCH);
624 GNUNET_assert (slen1 + slen2 ==
625 GNUNET_STRINGS_buffer_fill ((char *) &hdr[1],
628 handle->current->subsystem,
629 handle->current->name));
630 if (GNUNET_YES != handle->receiving)
632 handle->receiving = GNUNET_YES;
633 GNUNET_CLIENT_receive (handle->client,
635 handle, GNUNET_TIME_UNIT_FOREVER_REL);
637 finish (handle, GNUNET_OK);
643 * Transmit a SET/UPDATE request.
646 transmit_set (struct GNUNET_STATISTICS_Handle *handle, size_t size, void *buf)
648 struct GNUNET_STATISTICS_SetMessage *r;
655 finish (handle, GNUNET_SYSERR);
659 slen = strlen (handle->current->subsystem) + 1;
660 nlen = strlen (handle->current->name) + 1;
661 nsize = sizeof (struct GNUNET_STATISTICS_SetMessage) + slen + nlen;
665 finish (handle, GNUNET_SYSERR);
669 r->header.size = htons (nsize);
670 r->header.type = htons (GNUNET_MESSAGE_TYPE_STATISTICS_SET);
672 r->value = GNUNET_htonll (handle->current->value);
673 if (handle->current->make_persistent)
674 r->flags |= htonl (GNUNET_STATISTICS_SETFLAG_PERSISTENT);
675 if (handle->current->type == ACTION_UPDATE)
676 r->flags |= htonl (GNUNET_STATISTICS_SETFLAG_RELATIVE);
677 GNUNET_assert (slen + nlen ==
678 GNUNET_STRINGS_buffer_fill ((char *) &r[1],
681 handle->current->subsystem,
682 handle->current->name));
683 finish (handle, GNUNET_OK);
689 transmit_action (void *cls, size_t size, void *buf)
691 struct GNUNET_STATISTICS_Handle *handle = cls;
695 switch (handle->current->type)
698 ret = transmit_get (handle, size, buf);
702 ret = transmit_set (handle, size, buf);
705 ret = transmit_watch (handle, size, buf);
717 * Get handle for the statistics service.
719 * @param subsystem name of subsystem using the service
720 * @param cfg services configuration in use
721 * @return handle to use
723 struct GNUNET_STATISTICS_Handle *
724 GNUNET_STATISTICS_create (const char *subsystem,
725 const struct GNUNET_CONFIGURATION_Handle *cfg)
727 struct GNUNET_STATISTICS_Handle *ret;
729 GNUNET_assert (subsystem != NULL);
730 GNUNET_assert (cfg != NULL);
731 ret = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_Handle));
733 ret->subsystem = GNUNET_strdup (subsystem);
734 ret->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
735 if (GNUNET_YES != try_connect (ret))
737 GNUNET_free (ret->subsystem);
746 * Destroy a handle (free all state associated with
749 * @param h statistics handle to destroy
750 * @param sync_first set to GNUNET_YES if pending SET requests should
754 GNUNET_STATISTICS_destroy (struct GNUNET_STATISTICS_Handle *h, int sync_first)
756 struct GNUNET_STATISTICS_GetHandle *pos;
757 struct GNUNET_STATISTICS_GetHandle *next;
758 struct GNUNET_STATISTICS_GetHandle *prev;
759 struct GNUNET_TIME_Relative timeout;
764 if (GNUNET_SCHEDULER_NO_TASK != h->backoff_task)
765 GNUNET_SCHEDULER_cancel (h->backoff_task);
768 if (h->current != NULL)
770 if (h->current->type == ACTION_GET)
772 GNUNET_CLIENT_notify_transmit_ready_cancel (h->th);
774 free_action_item (h->current);
778 pos = h->action_head;
783 if (pos->type == ACTION_GET)
786 h->action_head = next;
789 free_action_item (pos);
797 h->action_tail = prev;
798 if (h->current == NULL)
800 h->current = h->action_head;
801 if (h->action_head != NULL)
803 h->action_head = h->action_head->next;
804 if (h->action_head == NULL)
805 h->action_tail = NULL;
808 h->do_destroy = GNUNET_YES;
809 if ((h->current != NULL) && (h->th == NULL))
811 timeout = GNUNET_TIME_absolute_get_remaining (h->current->timeout);
812 h->th = GNUNET_CLIENT_notify_transmit_ready (h->client,
816 &transmit_action, h);
817 GNUNET_assert (NULL != h->th);
824 GNUNET_CLIENT_notify_transmit_ready_cancel (h->th);
827 if (h->current != NULL)
828 free_action_item (h->current);
829 while (NULL != (pos = h->action_head))
831 h->action_head = pos->next;
832 free_action_item (pos);
834 if (h->client != NULL)
836 GNUNET_CLIENT_disconnect (h->client, GNUNET_YES);
839 for (i = 0; i < h->watches_size; i++)
841 GNUNET_free (h->watches[i]->subsystem);
842 GNUNET_free (h->watches[i]->name);
843 GNUNET_free (h->watches[i]);
845 GNUNET_array_grow (h->watches, h->watches_size, 0);
846 GNUNET_free (h->subsystem);
852 finish_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
854 struct GNUNET_STATISTICS_Handle *h = cls;
856 h->backoff_task = GNUNET_SCHEDULER_NO_TASK;
857 finish (h, GNUNET_SYSERR);
862 * Schedule the next action to be performed.
865 schedule_action (struct GNUNET_STATISTICS_Handle *h)
867 struct GNUNET_TIME_Relative timeout;
869 if (h->current != NULL)
870 return; /* action already pending */
871 if (GNUNET_YES != try_connect (h))
873 h->backoff_task = GNUNET_SCHEDULER_add_delayed (h->backoff,
875 h->backoff = GNUNET_TIME_relative_multiply (h->backoff, 2);
876 h->backoff = GNUNET_TIME_relative_min (h->backoff,
877 GNUNET_CONSTANTS_SERVICE_TIMEOUT);
881 /* schedule next action */
882 h->current = h->action_head;
883 if (NULL == h->current)
887 h->do_destroy = GNUNET_NO;
888 GNUNET_STATISTICS_destroy (h, GNUNET_YES);
892 GNUNET_CONTAINER_DLL_remove (h->action_head, h->action_tail, h->current);
893 timeout = GNUNET_TIME_absolute_get_remaining (h->current->timeout);
895 (h->th = GNUNET_CLIENT_notify_transmit_ready (h->client,
899 &transmit_action, h)))
902 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
903 "Failed to transmit request to statistics service.\n");
905 finish (h, GNUNET_SYSERR);
911 * Get statistic from the peer.
913 * @param handle identification of the statistics service
914 * @param subsystem limit to the specified subsystem, NULL for our subsystem
915 * @param name name of the statistic value, NULL for all values
916 * @param timeout after how long should we give up (and call
917 * cont with an error code)?
918 * @param cont continuation to call when done (can be NULL)
919 * @param proc function to call on each value
920 * @param cls closure for cont and proc
921 * @return NULL on error
923 struct GNUNET_STATISTICS_GetHandle *
924 GNUNET_STATISTICS_get (struct GNUNET_STATISTICS_Handle *handle,
925 const char *subsystem,
927 struct GNUNET_TIME_Relative timeout,
928 GNUNET_STATISTICS_Callback cont,
929 GNUNET_STATISTICS_Iterator proc, void *cls)
933 struct GNUNET_STATISTICS_GetHandle *ai;
935 GNUNET_assert (handle != NULL);
936 GNUNET_assert (proc != NULL);
937 GNUNET_assert (GNUNET_NO == handle->do_destroy);
938 if (GNUNET_YES != try_connect (handle))
941 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
942 "Failed to connect to statistics service, can not get value `%s:%s'.\n",
943 strlen (subsystem) ? subsystem : "*",
944 strlen (name) ? name : "*");
948 if (subsystem == NULL)
952 slen1 = strlen (subsystem) + 1;
953 slen2 = strlen (name) + 1;
954 GNUNET_assert (slen1 + slen2 + sizeof (struct GNUNET_MessageHeader) <
955 GNUNET_SERVER_MAX_MESSAGE_SIZE);
956 ai = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_GetHandle));
958 ai->subsystem = GNUNET_strdup (subsystem);
959 ai->name = GNUNET_strdup (name);
963 ai->timeout = GNUNET_TIME_relative_to_absolute (timeout);
964 ai->type = ACTION_GET;
965 ai->msize = slen1 + slen2 + sizeof (struct GNUNET_MessageHeader);
966 insert_ai (handle, ai);
972 * Cancel a 'get' request. Must be called before the 'cont'
973 * function is called.
975 * @param gh handle of the request to cancel
978 GNUNET_STATISTICS_get_cancel (struct GNUNET_STATISTICS_GetHandle *gh)
980 if (gh->sh->current == gh)
982 gh->aborted = GNUNET_YES;
986 GNUNET_CONTAINER_DLL_remove (gh->sh->action_head, gh->sh->action_tail, gh);
987 GNUNET_free (gh->name);
988 GNUNET_free (gh->subsystem);
995 * Watch statistics from the peer (be notified whenever they change).
996 * Note that the only way to cancel a "watch" request is to destroy
997 * the statistics handle given as the first argument to this call.
999 * @param handle identification of the statistics service
1000 * @param subsystem limit to the specified subsystem, never NULL
1001 * @param name name of the statistic value, never NULL
1002 * @param proc function to call on each value
1003 * @param proc_cls closure for proc
1004 * @return GNUNET_OK on success, GNUNET_SYSERR on error
1007 GNUNET_STATISTICS_watch (struct GNUNET_STATISTICS_Handle *handle,
1008 const char *subsystem,
1010 GNUNET_STATISTICS_Iterator proc, void *proc_cls)
1012 struct GNUNET_STATISTICS_WatchEntry *w;
1015 return GNUNET_SYSERR;
1016 w = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_WatchEntry));
1017 w->subsystem = GNUNET_strdup (subsystem);
1018 w->name = GNUNET_strdup (name);
1020 w->proc_cls = proc_cls;
1021 GNUNET_array_append (handle->watches, handle->watches_size, w);
1022 schedule_watch_request (handle, w);
1028 add_setter_action (struct GNUNET_STATISTICS_Handle *h,
1030 int make_persistent, uint64_t value, enum ActionType type)
1032 struct GNUNET_STATISTICS_GetHandle *ai;
1038 GNUNET_assert (h != NULL);
1039 GNUNET_assert (name != NULL);
1040 if (GNUNET_YES != try_connect (h))
1042 slen = strlen (h->subsystem) + 1;
1043 nlen = strlen (name) + 1;
1044 nsize = sizeof (struct GNUNET_STATISTICS_SetMessage) + slen + nlen;
1045 if (nsize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
1050 ai = h->action_head;
1053 if ((0 == strcmp (ai->subsystem, h->subsystem)) &&
1054 (0 == strcmp (ai->name, name)) &&
1055 ((ai->type == ACTION_UPDATE) || (ai->type == ACTION_SET)))
1057 if (ai->type == ACTION_SET)
1059 if (type == ACTION_UPDATE)
1061 delta = (int64_t) value;
1068 if (ai->value < -delta)
1081 if (type == ACTION_UPDATE)
1083 delta = (int64_t) value;
1092 ai->timeout = GNUNET_TIME_relative_to_absolute (SET_TRANSMIT_TIMEOUT);
1093 ai->make_persistent = make_persistent;
1098 ai = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_GetHandle));
1100 ai->subsystem = GNUNET_strdup (h->subsystem);
1101 ai->name = GNUNET_strdup (name);
1102 ai->timeout = GNUNET_TIME_relative_to_absolute (SET_TRANSMIT_TIMEOUT);
1103 ai->make_persistent = make_persistent;
1112 * Set statistic value for the peer. Will always use our
1113 * subsystem (the argument used when "handle" was created).
1115 * @param handle identification of the statistics service
1116 * @param name name of the statistic value
1117 * @param value new value to set
1118 * @param make_persistent should the value be kept across restarts?
1121 GNUNET_STATISTICS_set (struct GNUNET_STATISTICS_Handle *handle,
1122 const char *name, uint64_t value, int make_persistent)
1126 GNUNET_assert (GNUNET_NO == handle->do_destroy);
1127 add_setter_action (handle, name, make_persistent, value, ACTION_SET);
1132 * Set statistic value for the peer. Will always use our
1133 * subsystem (the argument used when "handle" was created).
1135 * @param handle identification of the statistics service
1136 * @param name name of the statistic value
1137 * @param delta change in value (added to existing value)
1138 * @param make_persistent should the value be kept across restarts?
1141 GNUNET_STATISTICS_update (struct GNUNET_STATISTICS_Handle *handle,
1142 const char *name, int64_t delta, int make_persistent)
1148 GNUNET_assert (GNUNET_NO == handle->do_destroy);
1149 add_setter_action (handle, name, make_persistent,
1150 (uint64_t) delta, ACTION_UPDATE);
1154 /* end of statistics_api.c */