/*
This file is part of GNUnet.
- (C) 2009, 2010 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009, 2010, 2011, 2016 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
- by the Free Software Foundation; either version 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
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.
*/
/**
* @author Christian Grothoff
*/
#include "platform.h"
-#include "gnunet_client_lib.h"
+#include "gnunet_util_lib.h"
#include "gnunet_constants.h"
-#include "gnunet_container_lib.h"
#include "gnunet_protocols.h"
-#include "gnunet_server_lib.h"
#include "gnunet_statistics_service.h"
-#include "gnunet_strings_lib.h"
#include "statistics.h"
/**
*/
enum ActionType
{
+ /**
+ * Get a value.
+ */
ACTION_GET,
+
+ /**
+ * Set a value.
+ */
ACTION_SET,
+
+ /**
+ * Update a value.
+ */
ACTION_UPDATE,
+
+ /**
+ * Watch a value.
+ */
ACTION_WATCH
};
GNUNET_STATISTICS_Iterator proc;
/**
- * Closure for proc
+ * Closure for @e proc
*/
void *proc_cls;
GNUNET_STATISTICS_Iterator proc;
/**
- * Closure for proc and cont.
+ * Closure for @e proc and @e cont.
*/
void *cls;
int aborted;
/**
- * Is this a GET, SET, UPDATE or WATCH?
+ * Is this a #ACTION_GET, #ACTION_SET, #ACTION_UPDATE or #ACTION_WATCH?
*/
enum ActionType type;
const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
- * Socket (if available).
+ * Message queue to the service.
*/
- struct GNUNET_CLIENT_Connection *client;
-
- /**
- * Currently pending transmission request.
- */
- struct GNUNET_CLIENT_TransmitHandle *th;
+ struct GNUNET_MQ_Handle *mq;
/**
* Head of the linked list of pending actions (first action
/**
* Task doing exponential back-off trying to reconnect.
*/
- GNUNET_SCHEDULER_TaskIdentifier backoff_task;
+ struct GNUNET_SCHEDULER_Task *backoff_task;
+
+ /**
+ * Task for running #do_destroy().
+ */
+ struct GNUNET_SCHEDULER_Task *destroy_task;
/**
* Time for next connect retry.
struct GNUNET_TIME_Relative backoff;
/**
- * Size of the 'watches' array.
+ * Maximum heap size observed so far (if available).
+ */
+ uint64_t peak_heap_size;
+
+ /**
+ * Maximum resident set side observed so far (if available).
+ */
+ uint64_t peak_rss;
+
+ /**
+ * Size of the @e watches array.
*/
unsigned int watches_size;
};
-
/**
- * Schedule the next action to be performed.
+ * Obtain statistics about this process's memory consumption and
+ * report those as well (if they changed).
*/
-static void schedule_action (struct GNUNET_STATISTICS_Handle *h);
+static void
+update_memory_statistics (struct GNUNET_STATISTICS_Handle *h)
+{
+#if ENABLE_HEAP_STATISTICS
+ uint64_t current_heap_size = 0;
+ uint64_t current_rss = 0;
+
+ if (GNUNET_NO != h->do_destroy)
+ return;
+#if HAVE_MALLINFO
+ {
+ struct mallinfo mi;
+
+ mi = mallinfo();
+ current_heap_size = mi.uordblks + mi.fordblks;
+ }
+#endif
+#if HAVE_GETRUSAGE
+ {
+ struct rusage ru;
+
+ if (0 == getrusage (RUSAGE_SELF, &ru))
+ {
+ current_rss = 1024LL * ru.ru_maxrss;
+ }
+ }
+#endif
+ if (current_heap_size > h->peak_heap_size)
+ {
+ h->peak_heap_size = current_heap_size;
+ GNUNET_STATISTICS_set (h,
+ "# peak heap size",
+ current_heap_size,
+ GNUNET_NO);
+ }
+ if (current_rss > h->peak_rss)
+ {
+ h->peak_rss = current_rss;
+ GNUNET_STATISTICS_set (h,
+ "# peak resident set size",
+ current_rss,
+ GNUNET_NO);
+ }
+#endif
+}
+
/**
- * Try to (re)connect to the statistics service.
+ * Reconnect at a later time, respecting back-off.
*
- * @return GNUNET_YES on success, GNUNET_NO on failure.
+ * @param h statistics handle
*/
-static int try_connect (struct GNUNET_STATISTICS_Handle *ret);
+static void
+reconnect_later (struct GNUNET_STATISTICS_Handle *h);
+/**
+ * Schedule the next action to be performed.
+ *
+ * @param cls statistics handle to reconnect
+ */
static void
-insert_ai (struct GNUNET_STATISTICS_Handle *h,
- struct GNUNET_STATISTICS_GetHandle *ai)
-{
- GNUNET_CONTAINER_DLL_insert_after (h->action_head, h->action_tail,
- h->action_tail, ai);
- if (h->action_head == ai)
- schedule_action (h);
-}
+schedule_action (void *cls);
+/**
+ * Transmit request to service that we want to watch
+ * the development of a particular value.
+ *
+ * @param h statistics handle
+ * @param watch watch entry of the value to watch
+ */
static void
schedule_watch_request (struct GNUNET_STATISTICS_Handle *h,
- struct GNUNET_STATISTICS_WatchEntry *watch)
+ struct GNUNET_STATISTICS_WatchEntry *watch)
{
-
struct GNUNET_STATISTICS_GetHandle *ai;
size_t slen;
size_t nlen;
size_t nsize;
- GNUNET_assert (h != NULL);
- if (GNUNET_YES != try_connect (h))
- {
- schedule_action (h);
- return;
- }
slen = strlen (watch->subsystem) + 1;
nlen = strlen (watch->name) + 1;
nsize = sizeof (struct GNUNET_MessageHeader) + slen + nlen;
if (nsize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
- {
- GNUNET_break (0);
- return;
- }
- ai = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_GetHandle));
+ {
+ GNUNET_break (0);
+ return;
+ }
+ ai = GNUNET_new (struct GNUNET_STATISTICS_GetHandle);
ai->sh = h;
ai->subsystem = GNUNET_strdup (watch->subsystem);
ai->name = GNUNET_strdup (watch->name);
ai->type = ACTION_WATCH;
ai->proc = watch->proc;
ai->cls = watch->proc_cls;
- insert_ai (h, ai);
+ GNUNET_CONTAINER_DLL_insert_tail (h->action_head,
+ h->action_tail,
+ ai);
+ schedule_action (h);
}
/**
- * Try to (re)connect to the statistics service.
+ * Free memory associated with the given action item.
*
- * @return GNUNET_YES on success, GNUNET_NO on failure.
+ * @param gh action item to free
*/
-static int
-try_connect (struct GNUNET_STATISTICS_Handle *ret)
+static void
+free_action_item (struct GNUNET_STATISTICS_GetHandle *gh)
{
- unsigned int i;
-
- if (ret->client != NULL)
- return GNUNET_YES;
- ret->client = GNUNET_CLIENT_connect ("statistics", ret->cfg);
- if (ret->client != NULL)
- {
- for (i = 0; i < ret->watches_size; i++)
- schedule_watch_request (ret, ret->watches[i]);
- return GNUNET_YES;
- }
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- _("Failed to connect to statistics service!\n"));
-#endif
- return GNUNET_NO;
+ GNUNET_free_non_null (gh->subsystem);
+ GNUNET_free_non_null (gh->name);
+ GNUNET_free (gh);
}
/**
- * Free memory associated with the given action item.
+ * Disconnect from the statistics service.
+ *
+ * @param h statistics handle to disconnect from
*/
static void
-free_action_item (struct GNUNET_STATISTICS_GetHandle *ai)
+do_disconnect (struct GNUNET_STATISTICS_Handle *h)
{
- GNUNET_free_non_null (ai->subsystem);
- GNUNET_free_non_null (ai->name);
- GNUNET_free (ai);
+ struct GNUNET_STATISTICS_GetHandle *c;
+
+ h->receiving = GNUNET_NO;
+ if (NULL != (c = h->current))
+ {
+ h->current = NULL;
+ if ( (NULL != c->cont) &&
+ (GNUNET_YES != c->aborted) )
+ {
+ c->cont (c->cls,
+ GNUNET_SYSERR);
+ c->cont = NULL;
+ }
+ free_action_item (c);
+ }
+ if (NULL != h->mq)
+ {
+ GNUNET_MQ_destroy (h->mq);
+ h->mq = NULL;
+ }
}
/**
- * GET processing is complete, tell client about it.
+ * Process a #GNUNET_MESSAGE_TYPE_STATISTICS_VALUE message.
+ *
+ * @param cls statistics handle
+ * @param smsg message received from the service, never NULL
+ * @return #GNUNET_OK if the message was well-formed
*/
-static void
-finish (struct GNUNET_STATISTICS_Handle *h, int code)
+static int
+check_statistics_value (void *cls,
+ const struct GNUNET_STATISTICS_ReplyMessage *smsg)
{
- struct GNUNET_STATISTICS_GetHandle *pos = h->current;
+ const char *service;
+ const char *name;
+ uint16_t size;
- h->current = NULL;
- schedule_action (h);
- if (pos != NULL)
- {
- if (pos->cont != NULL)
- pos->cont (pos->cls, code);
- free_action_item (pos);
- }
+ size = ntohs (smsg->header.size);
+ size -= sizeof (struct GNUNET_STATISTICS_ReplyMessage);
+ if (size !=
+ GNUNET_STRINGS_buffer_tokenize ((const char *) &smsg[1],
+ size,
+ 2,
+ &service,
+ &name))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ return GNUNET_OK;
}
/**
- * Process the message.
+ * Process a #GNUNET_MESSAGE_TYPE_STATISTICS_VALUE message.
*
- * @return GNUNET_OK if the message was well-formed
+ * @param cls statistics handle
+ * @param msg message received from the service, never NULL
+ * @return #GNUNET_OK if the message was well-formed
*/
-static int
-process_message (struct GNUNET_STATISTICS_Handle *h,
- const struct GNUNET_MessageHeader *msg)
+static void
+handle_statistics_value (void *cls,
+ const struct GNUNET_STATISTICS_ReplyMessage *smsg)
{
- char *service;
- char *name;
- const struct GNUNET_STATISTICS_ReplyMessage *smsg;
+ struct GNUNET_STATISTICS_Handle *h = cls;
+ const char *service;
+ const char *name;
uint16_t size;
if (h->current->aborted)
- {
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Iteration was aborted, ignoring VALUE\n");
-#endif
- return GNUNET_OK; /* don't bother */
- }
- size = ntohs (msg->size);
- if (size < sizeof (struct GNUNET_STATISTICS_ReplyMessage))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- smsg = (const struct GNUNET_STATISTICS_ReplyMessage *) msg;
+ return; /* iteration aborted, don't bother */
+
+ size = ntohs (smsg->header.size);
size -= sizeof (struct GNUNET_STATISTICS_ReplyMessage);
- if (size !=
- GNUNET_STRINGS_buffer_tokenize ((const char *) &smsg[1], size, 2,
- &service, &name))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
-#if DEBUG_STATISTICS
+ GNUNET_assert (size ==
+ GNUNET_STRINGS_buffer_tokenize ((const char *) &smsg[1],
+ size,
+ 2,
+ &service,
+ &name));
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Received valid statistic on `%s:%s': %llu\n", service, name,
+ "Received valid statistic on `%s:%s': %llu\n",
+ service, name,
GNUNET_ntohll (smsg->value));
-#endif
if (GNUNET_OK !=
- h->current->proc (h->current->cls, service, name,
- GNUNET_ntohll (smsg->value),
- 0 !=
- (ntohl (smsg->uid) & GNUNET_STATISTICS_PERSIST_BIT)))
- {
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Processing of remaining statistics aborted by client.\n");
-#endif
- h->current->aborted = GNUNET_YES;
- }
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG, "VALUE processed successfully\n");
-#endif
- return GNUNET_OK;
+ h->current->proc (h->current->cls,
+ service,
+ name,
+ GNUNET_ntohll (smsg->value),
+ 0 !=
+ (ntohl (smsg->uid) & GNUNET_STATISTICS_PERSIST_BIT)))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Processing of remaining statistics aborted by client.\n");
+ h->current->aborted = GNUNET_YES;
+ }
}
-static int
-process_watch_value (struct GNUNET_STATISTICS_Handle *h,
- const struct GNUNET_MessageHeader *msg)
+/**
+ * We have received a watch value from the service. Process it.
+ *
+ * @param cls statistics handle
+ * @param msg the watch value message
+ */
+static void
+handle_statistics_watch_value (void *cls,
+ const struct GNUNET_STATISTICS_WatchValueMessage *wvm)
{
- const struct GNUNET_STATISTICS_WatchValueMessage *wvm;
+ struct GNUNET_STATISTICS_Handle *h = cls;
struct GNUNET_STATISTICS_WatchEntry *w;
uint32_t wid;
- if (sizeof (struct GNUNET_STATISTICS_WatchValueMessage) !=
- ntohs (msg->size))
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- wvm = (const struct GNUNET_STATISTICS_WatchValueMessage *) msg;
GNUNET_break (0 == ntohl (wvm->reserved));
wid = ntohl (wvm->wid);
if (wid >= h->watches_size)
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
+ {
+ do_disconnect (h);
+ reconnect_later (h);
+ return;
+ }
w = h->watches[wid];
- (void) w->proc (w->proc_cls, w->subsystem, w->name,
- GNUNET_ntohll (wvm->value),
- 0 != (ntohl (wvm->flags) & GNUNET_STATISTICS_PERSIST_BIT));
- return GNUNET_OK;
+ if (NULL == w)
+ return;
+ (void) w->proc (w->proc_cls,
+ w->subsystem,
+ w->name,
+ GNUNET_ntohll (wvm->value),
+ 0 != (ntohl (wvm->flags) & GNUNET_STATISTICS_PERSIST_BIT));
}
/**
- * Function called with messages from stats service.
+ * Generic error handler, called with the appropriate error code and
+ * the same closure specified at the creation of the message queue.
+ * Not every message queue implementation supports an error handler.
*
- * @param cls closure
- * @param msg message received, NULL on timeout or fatal error
+ * @param cls closure with the `struct GNUNET_STATISTICS_Handle *`
+ * @param error error code
*/
static void
-receive_stats (void *cls, const struct GNUNET_MessageHeader *msg)
+mq_error_handler (void *cls,
+ enum GNUNET_MQ_Error error)
{
struct GNUNET_STATISTICS_Handle *h = cls;
- if (msg == NULL)
- {
- if (NULL != h->client)
- {
- GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
- h->client = NULL;
- }
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
- "Error receiving statistics from service, is the service running?\n");
-#endif
- finish (h, GNUNET_SYSERR);
- return;
- }
- switch (ntohs (msg->type))
+ if (GNUNET_NO != h->do_destroy)
+ {
+ h->do_destroy = GNUNET_NO;
+ if (NULL != h->destroy_task)
{
- case GNUNET_MESSAGE_TYPE_STATISTICS_END:
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Received end of statistics marker\n");
-#endif
- h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
- if (h->watches_size > 0)
- {
- GNUNET_CLIENT_receive (h->client, &receive_stats, h,
- GNUNET_TIME_UNIT_FOREVER_REL);
- }
- else
- {
- h->receiving = GNUNET_NO;
- }
- finish (h, GNUNET_OK);
- return;
- case GNUNET_MESSAGE_TYPE_STATISTICS_VALUE:
- if (GNUNET_OK == process_message (h, msg))
- {
- /* finally, look for more! */
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Processing VALUE done, now reading more\n");
-#endif
- GNUNET_CLIENT_receive (h->client, &receive_stats, h,
- GNUNET_TIME_absolute_get_remaining
- (h->current->timeout));
- h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
- return;
- }
- GNUNET_break (0);
- break;
- case GNUNET_MESSAGE_TYPE_STATISTICS_WATCH_VALUE:
- if (GNUNET_OK == process_watch_value (h, msg))
- {
- h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
- GNUNET_assert (h->watches_size > 0);
- GNUNET_CLIENT_receive (h->client, &receive_stats, h,
- GNUNET_TIME_UNIT_FOREVER_REL);
- return;
- }
- GNUNET_break (0);
- break;
- default:
- GNUNET_break (0);
- break;
+ GNUNET_SCHEDULER_cancel (h->destroy_task);
+ h->destroy_task = NULL;
}
- if (NULL != h->client)
+ GNUNET_STATISTICS_destroy (h,
+ GNUNET_NO);
+ return;
+ }
+ do_disconnect (h);
+ reconnect_later (h);
+}
+
+
+/**
+ * Task used to destroy the statistics handle.
+ *
+ * @param cls the `struct GNUNET_STATISTICS_Handle`
+ */
+static void
+do_destroy (void *cls)
+{
+ struct GNUNET_STATISTICS_Handle *h = cls;
+
+ h->destroy_task = NULL;
+ h->do_destroy = GNUNET_NO;
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Running final destruction\n");
+ GNUNET_STATISTICS_destroy (h,
+ GNUNET_NO);
+}
+
+
+/**
+ * Handle a #GNUNET_MESSAGE_TYPE_STATISTICS_DISCONNECT_CONFIRM
+ * message. We receive this message at the end of the shutdown when
+ * the service confirms that all data has been written to disk.
+ *
+ * @param cls our `struct GNUNET_STATISTICS_Handle *`
+ * @param msg the message
+ */
+static void
+handle_disconnect_confirm (void *cls,
+ const struct GNUNET_MessageHeader *msg)
+{
+ struct GNUNET_STATISTICS_Handle *h = cls;
+
+ if (GNUNET_SYSERR != h->do_destroy)
+ {
+ /* not in shutdown, why do we get 'TEST'? */
+ GNUNET_break (0);
+ do_disconnect (h);
+ reconnect_later (h);
+ return;
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received DISCONNNECT_CONFIRM message from statistics, can complete disconnect\n");
+ if (NULL != h->destroy_task)
+ GNUNET_SCHEDULER_cancel (h->destroy_task);
+ h->destroy_task = GNUNET_SCHEDULER_add_now (&do_destroy,
+ h);
+}
+
+
+/**
+ * Handle a #GNUNET_MESSAGE_TYPE_STATISTICS_END message. We receive
+ * this message in response to a query to indicate that there are no
+ * further matching results.
+ *
+ * @param cls our `struct GNUNET_STATISTICS_Handle *`
+ * @param msg the message
+ */
+static void
+handle_statistics_end (void *cls,
+ const struct GNUNET_MessageHeader *msg)
+{
+ struct GNUNET_STATISTICS_Handle *h = cls;
+ struct GNUNET_STATISTICS_GetHandle *c;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Received end of statistics marker\n");
+ if (NULL == (c = h->current))
+ {
+ GNUNET_break (0);
+ do_disconnect (h);
+ reconnect_later (h);
+ return;
+ }
+ h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
+ h->current = NULL;
+ schedule_action (h);
+ if (NULL != c->cont)
+ {
+ c->cont (c->cls,
+ GNUNET_OK);
+ c->cont = NULL;
+ }
+ free_action_item (c);
+}
+
+
+/**
+ * Try to (re)connect to the statistics service.
+ *
+ * @param h statistics handle to reconnect
+ * @return #GNUNET_YES on success, #GNUNET_NO on failure.
+ */
+static int
+try_connect (struct GNUNET_STATISTICS_Handle *h)
+{
+ struct GNUNET_MQ_MessageHandler handlers[] = {
+ GNUNET_MQ_hd_fixed_size (disconnect_confirm,
+ GNUNET_MESSAGE_TYPE_STATISTICS_DISCONNECT_CONFIRM,
+ struct GNUNET_MessageHeader,
+ h),
+ GNUNET_MQ_hd_fixed_size (statistics_end,
+ GNUNET_MESSAGE_TYPE_STATISTICS_END,
+ struct GNUNET_MessageHeader,
+ h),
+ GNUNET_MQ_hd_var_size (statistics_value,
+ GNUNET_MESSAGE_TYPE_STATISTICS_VALUE,
+ struct GNUNET_STATISTICS_ReplyMessage,
+ h),
+ GNUNET_MQ_hd_fixed_size (statistics_watch_value,
+ GNUNET_MESSAGE_TYPE_STATISTICS_WATCH_VALUE,
+ struct GNUNET_STATISTICS_WatchValueMessage,
+ h),
+ GNUNET_MQ_handler_end ()
+ };
+ struct GNUNET_STATISTICS_GetHandle *gh;
+ struct GNUNET_STATISTICS_GetHandle *gn;
+
+ if (NULL != h->backoff_task)
+ return GNUNET_NO;
+ if (NULL != h->mq)
+ return GNUNET_YES;
+ h->mq = GNUNET_CLIENT_connect (h->cfg,
+ "statistics",
+ handlers,
+ &mq_error_handler,
+ h);
+ if (NULL == h->mq)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to connect to statistics service!\n");
+ return GNUNET_NO;
+ }
+ gn = h->action_head;
+ while (NULL != (gh = gn))
+ {
+ gn = gh->next;
+ if (gh->type == ACTION_WATCH)
{
- GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
- h->client = NULL;
+ GNUNET_CONTAINER_DLL_remove (h->action_head,
+ h->action_tail,
+ gh);
+ free_action_item (gh);
}
- finish (h, GNUNET_SYSERR);
+ }
+ for (unsigned int i = 0; i < h->watches_size; i++)
+ if (NULL != h->watches[i])
+ schedule_watch_request (h,
+ h->watches[i]);
+ return GNUNET_YES;
}
+/**
+ * We've waited long enough, reconnect now.
+ *
+ * @param cls the `struct GNUNET_STATISTICS_Handle` to reconnect
+ */
+static void
+reconnect_task (void *cls)
+{
+ struct GNUNET_STATISTICS_Handle *h = cls;
+
+ h->backoff_task = NULL;
+ schedule_action (h);
+}
+
+
+/**
+ * Reconnect at a later time, respecting back-off.
+ *
+ * @param h statistics handle
+ */
+static void
+reconnect_later (struct GNUNET_STATISTICS_Handle *h)
+{
+ int loss;
+ struct GNUNET_STATISTICS_GetHandle *gh;
+
+ GNUNET_assert (NULL == h->backoff_task);
+ if (GNUNET_YES == h->do_destroy)
+ {
+ /* So we are shutting down and the service is not reachable.
+ * Chances are that it's down for good and we are not going to connect to
+ * it anymore.
+ * Give up and don't sync the rest of the data.
+ */
+ loss = GNUNET_NO;
+ for (gh = h->action_head; NULL != gh; gh = gh->next)
+ if ( (gh->make_persistent) &&
+ (ACTION_SET == gh->type) )
+ loss = GNUNET_YES;
+ if (GNUNET_YES == loss)
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Could not save some persistent statistics\n"));
+ if (NULL != h->destroy_task)
+ GNUNET_SCHEDULER_cancel (h->destroy_task);
+ h->destroy_task = GNUNET_SCHEDULER_add_now (&do_destroy,
+ h);
+ return;
+ }
+ h->backoff_task
+ = GNUNET_SCHEDULER_add_delayed (h->backoff,
+ &reconnect_task,
+ h);
+ h->backoff = GNUNET_TIME_STD_BACKOFF (h->backoff);
+}
+
+
+
/**
* Transmit a GET request (and if successful, start to receive
* the response).
+ *
+ * @param handle statistics handle
*/
-static size_t
-transmit_get (struct GNUNET_STATISTICS_Handle *handle, size_t size, void *buf)
+static void
+transmit_get (struct GNUNET_STATISTICS_Handle *handle)
{
+ struct GNUNET_STATISTICS_GetHandle *c;
struct GNUNET_MessageHeader *hdr;
+ struct GNUNET_MQ_Envelope *env;
size_t slen1;
size_t slen2;
- uint16_t msize;
- if (buf == NULL)
- {
- /* timeout / error */
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Transmission of request for statistics failed!\n");
-#endif
- finish (handle, GNUNET_SYSERR);
- return 0;
- }
- slen1 = strlen (handle->current->subsystem) + 1;
- slen2 = strlen (handle->current->name) + 1;
- msize = slen1 + slen2 + sizeof (struct GNUNET_MessageHeader);
- GNUNET_assert (msize <= size);
- hdr = (struct GNUNET_MessageHeader *) buf;
- hdr->size = htons (msize);
- hdr->type = htons (GNUNET_MESSAGE_TYPE_STATISTICS_GET);
+ GNUNET_assert (NULL != (c = handle->current));
+ slen1 = strlen (c->subsystem) + 1;
+ slen2 = strlen (c->name) + 1;
+ env = GNUNET_MQ_msg_extra (hdr,
+ slen1 + slen2,
+ GNUNET_MESSAGE_TYPE_STATISTICS_GET);
GNUNET_assert (slen1 + slen2 ==
- GNUNET_STRINGS_buffer_fill ((char *) &hdr[1], slen1 + slen2,
- 2, handle->current->subsystem,
- handle->current->name));
- if (!handle->receiving)
- {
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Transmission of GET done, now reading response\n");
-#endif
- handle->receiving = GNUNET_YES;
- GNUNET_CLIENT_receive (handle->client, &receive_stats, handle,
- GNUNET_TIME_absolute_get_remaining
- (handle->current->timeout));
- }
- return msize;
+ GNUNET_STRINGS_buffer_fill ((char *) &hdr[1],
+ slen1 + slen2,
+ 2,
+ c->subsystem,
+ c->name));
+ GNUNET_MQ_notify_sent (env,
+ &schedule_action,
+ handle);
+ GNUNET_MQ_send (handle->mq,
+ env);
}
/**
* Transmit a WATCH request (and if successful, start to receive
* the response).
+ *
+ * @param handle statistics handle
*/
-static size_t
-transmit_watch (struct GNUNET_STATISTICS_Handle *handle, size_t size,
- void *buf)
+static void
+transmit_watch (struct GNUNET_STATISTICS_Handle *handle)
{
struct GNUNET_MessageHeader *hdr;
+ struct GNUNET_MQ_Envelope *env;
size_t slen1;
size_t slen2;
- uint16_t msize;
- if (buf == NULL)
- {
- /* timeout / error */
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Transmission of request for statistics failed!\n");
-#endif
- finish (handle, GNUNET_SYSERR);
- return 0;
- }
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Transmitting watch request for `%s'\n",
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmitting watch request for `%s'\n",
handle->current->name);
-#endif
slen1 = strlen (handle->current->subsystem) + 1;
slen2 = strlen (handle->current->name) + 1;
- msize = slen1 + slen2 + sizeof (struct GNUNET_MessageHeader);
- GNUNET_assert (msize <= size);
- hdr = (struct GNUNET_MessageHeader *) buf;
- hdr->size = htons (msize);
- hdr->type = htons (GNUNET_MESSAGE_TYPE_STATISTICS_WATCH);
+ env = GNUNET_MQ_msg_extra (hdr,
+ slen1 + slen2,
+ GNUNET_MESSAGE_TYPE_STATISTICS_WATCH);
GNUNET_assert (slen1 + slen2 ==
- GNUNET_STRINGS_buffer_fill ((char *) &hdr[1], slen1 + slen2,
- 2, handle->current->subsystem,
- handle->current->name));
- if (GNUNET_YES != handle->receiving)
- {
- handle->receiving = GNUNET_YES;
- GNUNET_CLIENT_receive (handle->client, &receive_stats, handle,
- GNUNET_TIME_UNIT_FOREVER_REL);
- }
- finish (handle, GNUNET_OK);
- return msize;
+ GNUNET_STRINGS_buffer_fill ((char *) &hdr[1],
+ slen1 + slen2,
+ 2,
+ handle->current->subsystem,
+ handle->current->name));
+ GNUNET_MQ_notify_sent (env,
+ &schedule_action,
+ handle);
+ GNUNET_MQ_send (handle->mq,
+ env);
+ GNUNET_assert (NULL == handle->current->cont);
+ free_action_item (handle->current);
+ handle->current = NULL;
+ schedule_action (handle);
}
/**
* Transmit a SET/UPDATE request.
+ *
+ * @param handle statistics handle
*/
-static size_t
-transmit_set (struct GNUNET_STATISTICS_Handle *handle, size_t size, void *buf)
+static void
+transmit_set (struct GNUNET_STATISTICS_Handle *handle)
{
struct GNUNET_STATISTICS_SetMessage *r;
+ struct GNUNET_MQ_Envelope *env;
size_t slen;
size_t nlen;
- size_t nsize;
-
- if (NULL == buf)
- {
- finish (handle, GNUNET_SYSERR);
- return 0;
- }
slen = strlen (handle->current->subsystem) + 1;
nlen = strlen (handle->current->name) + 1;
- nsize = sizeof (struct GNUNET_STATISTICS_SetMessage) + slen + nlen;
- if (size < nsize)
- {
- GNUNET_break (0);
- finish (handle, GNUNET_SYSERR);
- return 0;
- }
- r = buf;
- r->header.size = htons (nsize);
- r->header.type = htons (GNUNET_MESSAGE_TYPE_STATISTICS_SET);
+ env = GNUNET_MQ_msg_extra (r,
+ slen + nlen,
+ GNUNET_MESSAGE_TYPE_STATISTICS_SET);
r->flags = 0;
r->value = GNUNET_htonll (handle->current->value);
if (handle->current->make_persistent)
if (handle->current->type == ACTION_UPDATE)
r->flags |= htonl (GNUNET_STATISTICS_SETFLAG_RELATIVE);
GNUNET_assert (slen + nlen ==
- GNUNET_STRINGS_buffer_fill ((char *) &r[1], slen + nlen, 2,
- handle->current->subsystem,
- handle->current->name));
- finish (handle, GNUNET_OK);
- return nsize;
-}
-
-
-static size_t
-transmit_action (void *cls, size_t size, void *buf)
-{
- struct GNUNET_STATISTICS_Handle *handle = cls;
- size_t ret;
-
- handle->th = NULL;
- switch (handle->current->type)
- {
- case ACTION_GET:
- ret = transmit_get (handle, size, buf);
- break;
- case ACTION_SET:
- case ACTION_UPDATE:
- ret = transmit_set (handle, size, buf);
- break;
- case ACTION_WATCH:
- ret = transmit_watch (handle, size, buf);
- break;
- default:
- ret = 0;
- GNUNET_break (0);
- break;
- }
- return ret;
+ GNUNET_STRINGS_buffer_fill ((char *) &r[1],
+ slen + nlen,
+ 2,
+ handle->current->subsystem,
+ handle->current->name));
+ GNUNET_assert (NULL == handle->current->cont);
+ free_action_item (handle->current);
+ handle->current = NULL;
+ update_memory_statistics (handle);
+ GNUNET_MQ_notify_sent (env,
+ &schedule_action,
+ handle);
+ GNUNET_MQ_send (handle->mq,
+ env);
}
*/
struct GNUNET_STATISTICS_Handle *
GNUNET_STATISTICS_create (const char *subsystem,
- const struct GNUNET_CONFIGURATION_Handle *cfg)
+ const struct GNUNET_CONFIGURATION_Handle *cfg)
{
- struct GNUNET_STATISTICS_Handle *ret;
-
- GNUNET_assert (subsystem != NULL);
- GNUNET_assert (cfg != NULL);
- ret = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_Handle));
- ret->cfg = cfg;
- ret->subsystem = GNUNET_strdup (subsystem);
- ret->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
- if (GNUNET_YES != try_connect (ret))
- {
- GNUNET_free (ret->subsystem);
- GNUNET_free (ret);
- return NULL;
- }
- return ret;
+ struct GNUNET_STATISTICS_Handle *h;
+
+ if (GNUNET_YES ==
+ GNUNET_CONFIGURATION_get_value_yesno (cfg,
+ "statistics",
+ "DISABLE"))
+ return NULL;
+ h = GNUNET_new (struct GNUNET_STATISTICS_Handle);
+ h->cfg = cfg;
+ h->subsystem = GNUNET_strdup (subsystem);
+ h->backoff = GNUNET_TIME_UNIT_MILLISECONDS;
+ return h;
}
* it).
*
* @param h statistics handle to destroy
- * @param sync_first set to GNUNET_YES if pending SET requests should
+ * @param sync_first set to #GNUNET_YES if pending SET requests should
* be completed
*/
void
-GNUNET_STATISTICS_destroy (struct GNUNET_STATISTICS_Handle *h, int sync_first)
+GNUNET_STATISTICS_destroy (struct GNUNET_STATISTICS_Handle *h,
+ int sync_first)
{
struct GNUNET_STATISTICS_GetHandle *pos;
struct GNUNET_STATISTICS_GetHandle *next;
- struct GNUNET_STATISTICS_GetHandle *prev;
- struct GNUNET_TIME_Relative timeout;
- int i;
- if (h == NULL)
+ if (NULL == h)
return;
- if (GNUNET_SCHEDULER_NO_TASK != h->backoff_task)
- GNUNET_SCHEDULER_cancel (h->backoff_task);
- if (sync_first)
- {
- if (h->current != NULL)
- {
- if (h->current->type == ACTION_GET)
- {
- GNUNET_CLIENT_notify_transmit_ready_cancel (h->th);
- h->th = NULL;
- free_action_item (h->current);
- h->current = NULL;
- }
- }
- pos = h->action_head;
- prev = NULL;
- while (pos != NULL)
- {
- next = pos->next;
- if (pos->type == ACTION_GET)
- {
- if (prev == NULL)
- h->action_head = next;
- else
- prev->next = next;
- free_action_item (pos);
- }
- else
- {
- prev = pos;
- }
- pos = next;
- }
- h->action_tail = prev;
- if (h->current == NULL)
- {
- h->current = h->action_head;
- if (h->action_head != NULL)
- {
- h->action_head = h->action_head->next;
- if (h->action_head == NULL)
- h->action_tail = NULL;
- }
- }
- h->do_destroy = GNUNET_YES;
- if ((h->current != NULL) && (h->th == NULL))
- {
- timeout = GNUNET_TIME_absolute_get_remaining (h->current->timeout);
- h->th =
- GNUNET_CLIENT_notify_transmit_ready (h->client, h->current->msize,
- timeout, GNUNET_YES,
- &transmit_action, h);
- GNUNET_assert (NULL != h->th);
- }
- if (h->th != NULL)
- return;
- }
- if (NULL != h->th)
+ GNUNET_assert (GNUNET_NO == h->do_destroy); /* Don't call twice. */
+ if ( (sync_first) &&
+ (NULL != h->mq) &&
+ (0 != GNUNET_MQ_get_length (h->mq)) )
+ {
+ if ( (NULL != h->current) &&
+ (ACTION_GET == h->current->type) )
+ h->current->aborted = GNUNET_YES;
+ next = h->action_head;
+ while (NULL != (pos = next))
{
- GNUNET_CLIENT_notify_transmit_ready_cancel (h->th);
- h->th = NULL;
+ next = pos->next;
+ if ( (ACTION_GET == pos->type) ||
+ (ACTION_WATCH == pos->type) )
+ {
+ GNUNET_CONTAINER_DLL_remove (h->action_head,
+ h->action_tail,
+ pos);
+ free_action_item (pos);
+ }
}
- if (h->current != NULL)
- free_action_item (h->current);
+ h->do_destroy = GNUNET_YES;
+ schedule_action (h);
+ GNUNET_assert (NULL == h->destroy_task);
+ h->destroy_task
+ = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply (h->backoff,
+ 5),
+ &do_destroy,
+ h);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Deferring destruction\n");
+ return; /* do not finish destruction just yet */
+ }
+ /* do clean up all */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Cleaning all up\n");
while (NULL != (pos = h->action_head))
- {
- h->action_head = pos->next;
- free_action_item (pos);
- }
- if (h->client != NULL)
- {
- GNUNET_CLIENT_disconnect (h->client, GNUNET_YES);
- h->client = NULL;
- }
- for (i = 0; i < h->watches_size; i++)
- {
- GNUNET_free (h->watches[i]->subsystem);
- GNUNET_free (h->watches[i]->name);
- GNUNET_free (h->watches[i]);
- }
- GNUNET_array_grow (h->watches, h->watches_size, 0);
+ {
+ GNUNET_CONTAINER_DLL_remove (h->action_head,
+ h->action_tail,
+ pos);
+ free_action_item (pos);
+ }
+ do_disconnect (h);
+ if (NULL != h->backoff_task)
+ {
+ GNUNET_SCHEDULER_cancel (h->backoff_task);
+ h->backoff_task = NULL;
+ }
+ if (NULL != h->destroy_task)
+ {
+ GNUNET_break (0);
+ GNUNET_SCHEDULER_cancel (h->destroy_task);
+ h->destroy_task = NULL;
+ }
+ for (unsigned int i = 0; i < h->watches_size; i++)
+ {
+ if (NULL == h->watches[i])
+ continue;
+ GNUNET_free (h->watches[i]->subsystem);
+ GNUNET_free (h->watches[i]->name);
+ GNUNET_free (h->watches[i]);
+ }
+ GNUNET_array_grow (h->watches,
+ h->watches_size,
+ 0);
GNUNET_free (h->subsystem);
GNUNET_free (h);
}
-static void
-finish_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct GNUNET_STATISTICS_Handle *h = cls;
-
- h->backoff_task = GNUNET_SCHEDULER_NO_TASK;
- finish (h, GNUNET_SYSERR);
-}
-
-
/**
* Schedule the next action to be performed.
+ *
+ * @param cls statistics handle
*/
static void
-schedule_action (struct GNUNET_STATISTICS_Handle *h)
+schedule_action (void *cls)
{
- struct GNUNET_TIME_Relative timeout;
+ struct GNUNET_STATISTICS_Handle *h = cls;
- if (h->current != NULL)
- return; /* action already pending */
+ if (NULL != h->backoff_task)
+ return; /* action already pending */
if (GNUNET_YES != try_connect (h))
- {
- h->backoff_task =
- GNUNET_SCHEDULER_add_delayed (h->backoff, &finish_task, h);
- h->backoff = GNUNET_TIME_relative_multiply (h->backoff, 2);
- h->backoff =
- GNUNET_TIME_relative_min (h->backoff,
- GNUNET_CONSTANTS_SERVICE_TIMEOUT);
- return;
- }
-
+ {
+ reconnect_later (h);
+ return;
+ }
+ if (0 < GNUNET_MQ_get_length (h->mq))
+ return; /* Wait for queue to be reduced more */
/* schedule next action */
- h->current = h->action_head;
- if (NULL == h->current)
+ while (NULL == h->current)
+ {
+ h->current = h->action_head;
+ if (NULL == h->current)
{
- if (h->do_destroy)
- {
- h->do_destroy = GNUNET_NO;
- GNUNET_STATISTICS_destroy (h, GNUNET_YES);
- }
+ struct GNUNET_MessageHeader *hdr;
+ struct GNUNET_MQ_Envelope *env;
+
+ if (GNUNET_YES != h->do_destroy)
+ return; /* nothing to do */
+ /* let service know that we're done */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Notifying service that we are done\n");
+ h->do_destroy = GNUNET_SYSERR; /* in 'TEST' mode */
+ env = GNUNET_MQ_msg (hdr,
+ GNUNET_MESSAGE_TYPE_STATISTICS_DISCONNECT);
+ GNUNET_MQ_notify_sent (env,
+ &schedule_action,
+ h);
+ GNUNET_MQ_send (h->mq,
+ env);
return;
}
- GNUNET_CONTAINER_DLL_remove (h->action_head, h->action_tail, h->current);
- timeout = GNUNET_TIME_absolute_get_remaining (h->current->timeout);
- if (NULL ==
- (h->th =
- GNUNET_CLIENT_notify_transmit_ready (h->client, h->current->msize,
- timeout, GNUNET_YES,
- &transmit_action, h)))
+ GNUNET_CONTAINER_DLL_remove (h->action_head,
+ h->action_tail,
+ h->current);
+ switch (h->current->type)
{
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Failed to transmit request to statistics service.\n");
-#endif
- finish (h, GNUNET_SYSERR);
+ case ACTION_GET:
+ transmit_get (h);
+ break;
+ case ACTION_SET:
+ case ACTION_UPDATE:
+ transmit_set (h);
+ break;
+ case ACTION_WATCH:
+ transmit_watch (h);
+ break;
+ default:
+ GNUNET_assert (0);
+ break;
}
+ }
}
* @param handle identification of the statistics service
* @param subsystem limit to the specified subsystem, NULL for our subsystem
* @param name name of the statistic value, NULL for all values
- * @param timeout after how long should we give up (and call
- * cont with an error code)?
* @param cont continuation to call when done (can be NULL)
+ * This callback CANNOT destroy the statistics handle in the same call.
* @param proc function to call on each value
- * @param cls closure for cont and proc
+ * @param cls closure for @a cont and @a proc
* @return NULL on error
*/
struct GNUNET_STATISTICS_GetHandle *
GNUNET_STATISTICS_get (struct GNUNET_STATISTICS_Handle *handle,
- const char *subsystem, const char *name,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_STATISTICS_Callback cont,
- GNUNET_STATISTICS_Iterator proc, void *cls)
+ const char *subsystem,
+ const char *name,
+ GNUNET_STATISTICS_Callback cont,
+ GNUNET_STATISTICS_Iterator proc,
+ void *cls)
{
size_t slen1;
size_t slen2;
struct GNUNET_STATISTICS_GetHandle *ai;
- GNUNET_assert (handle != NULL);
- GNUNET_assert (proc != NULL);
+ if (NULL == handle)
+ return NULL;
+ GNUNET_assert (NULL != proc);
GNUNET_assert (GNUNET_NO == handle->do_destroy);
- if (GNUNET_YES != try_connect (handle))
- {
-#if DEBUG_STATISTICS
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Failed to connect to statistics service, can not get value `%s:%s'.\n",
- strlen (subsystem) ? subsystem : "*", strlen (name) ? name : "*");
-#endif
- return NULL;
- }
- if (subsystem == NULL)
+ if (NULL == subsystem)
subsystem = "";
- if (name == NULL)
+ if (NULL == name)
name = "";
slen1 = strlen (subsystem) + 1;
slen2 = strlen (name) + 1;
GNUNET_assert (slen1 + slen2 + sizeof (struct GNUNET_MessageHeader) <
- GNUNET_SERVER_MAX_MESSAGE_SIZE);
- ai = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_GetHandle));
+ GNUNET_SERVER_MAX_MESSAGE_SIZE);
+ ai = GNUNET_new (struct GNUNET_STATISTICS_GetHandle);
ai->sh = handle;
ai->subsystem = GNUNET_strdup (subsystem);
ai->name = GNUNET_strdup (name);
ai->cont = cont;
ai->proc = proc;
ai->cls = cls;
- ai->timeout = GNUNET_TIME_relative_to_absolute (timeout);
ai->type = ACTION_GET;
ai->msize = slen1 + slen2 + sizeof (struct GNUNET_MessageHeader);
- insert_ai (handle, ai);
+ GNUNET_CONTAINER_DLL_insert_tail (handle->action_head,
+ handle->action_tail,
+ ai);
+ schedule_action (handle);
return ai;
}
void
GNUNET_STATISTICS_get_cancel (struct GNUNET_STATISTICS_GetHandle *gh)
{
+ if (NULL == gh)
+ return;
+ gh->cont = NULL;
if (gh->sh->current == gh)
- {
- gh->aborted = GNUNET_YES;
- }
- else
- {
- GNUNET_CONTAINER_DLL_remove (gh->sh->action_head, gh->sh->action_tail,
- gh);
- GNUNET_free (gh->name);
- GNUNET_free (gh->subsystem);
- GNUNET_free (gh);
- }
+ {
+ gh->aborted = GNUNET_YES;
+ return;
+ }
+ GNUNET_CONTAINER_DLL_remove (gh->sh->action_head,
+ gh->sh->action_tail,
+ gh);
+ GNUNET_free (gh->name);
+ GNUNET_free (gh->subsystem);
+ GNUNET_free (gh);
}
/**
* Watch statistics from the peer (be notified whenever they change).
- * Note that the only way to cancel a "watch" request is to destroy
- * the statistics handle given as the first argument to this call.
*
* @param handle identification of the statistics service
* @param subsystem limit to the specified subsystem, never NULL
* @param name name of the statistic value, never NULL
* @param proc function to call on each value
- * @param proc_cls closure for proc
- * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ * @param proc_cls closure for @a proc
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
*/
int
GNUNET_STATISTICS_watch (struct GNUNET_STATISTICS_Handle *handle,
- const char *subsystem, const char *name,
- GNUNET_STATISTICS_Iterator proc, void *proc_cls)
+ const char *subsystem,
+ const char *name,
+ GNUNET_STATISTICS_Iterator proc,
+ void *proc_cls)
{
struct GNUNET_STATISTICS_WatchEntry *w;
- if (handle == NULL)
+ if (NULL == handle)
return GNUNET_SYSERR;
- w = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_WatchEntry));
+ w = GNUNET_new (struct GNUNET_STATISTICS_WatchEntry);
w->subsystem = GNUNET_strdup (subsystem);
w->name = GNUNET_strdup (name);
w->proc = proc;
w->proc_cls = proc_cls;
- GNUNET_array_append (handle->watches, handle->watches_size, w);
- schedule_watch_request (handle, w);
+ GNUNET_array_append (handle->watches,
+ handle->watches_size,
+ w);
+ schedule_watch_request (handle,
+ w);
return GNUNET_OK;
}
+/**
+ * Stop watching statistics from the peer.
+ *
+ * @param handle identification of the statistics service
+ * @param subsystem limit to the specified subsystem, never NULL
+ * @param name name of the statistic value, never NULL
+ * @param proc function to call on each value
+ * @param proc_cls closure for @a proc
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on error (no such watch)
+ */
+int
+GNUNET_STATISTICS_watch_cancel (struct GNUNET_STATISTICS_Handle *handle,
+ const char *subsystem,
+ const char *name,
+ GNUNET_STATISTICS_Iterator proc,
+ void *proc_cls)
+{
+ struct GNUNET_STATISTICS_WatchEntry *w;
+
+ if (NULL == handle)
+ return GNUNET_SYSERR;
+ for (unsigned int i=0;i<handle->watches_size;i++)
+ {
+ w = handle->watches[i];
+ if (NULL == w)
+ continue;
+ if ( (w->proc == proc) &&
+ (w->proc_cls == proc_cls) &&
+ (0 == strcmp (w->name,
+ name)) &&
+ (0 == strcmp (w->subsystem,
+ subsystem)) )
+ {
+ GNUNET_free (w->name);
+ GNUNET_free (w->subsystem);
+ GNUNET_free (w);
+ handle->watches[i] = NULL;
+ return GNUNET_OK;
+ }
+ }
+ return GNUNET_SYSERR;
+}
+
+
+/**
+ * Queue a request to change a statistic.
+ *
+ * @param h statistics handle
+ * @param name name of the value
+ * @param make_persistent should the value be kept across restarts?
+ * @param value new value or change
+ * @param type type of the action (#ACTION_SET or #ACTION_UPDATE)
+ */
static void
-add_setter_action (struct GNUNET_STATISTICS_Handle *h, const char *name,
- int make_persistent, uint64_t value, enum ActionType type)
+add_setter_action (struct GNUNET_STATISTICS_Handle *h,
+ const char *name,
+ int make_persistent,
+ uint64_t value,
+ enum ActionType type)
{
struct GNUNET_STATISTICS_GetHandle *ai;
size_t slen;
size_t nsize;
int64_t delta;
- GNUNET_assert (h != NULL);
- GNUNET_assert (name != NULL);
- if (GNUNET_YES != try_connect (h))
- return;
slen = strlen (h->subsystem) + 1;
nlen = strlen (name) + 1;
nsize = sizeof (struct GNUNET_STATISTICS_SetMessage) + slen + nlen;
if (nsize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ for (ai = h->action_head; NULL != ai; ai = ai->next)
+ {
+ if (! ( (0 == strcmp (ai->subsystem,
+ h->subsystem)) &&
+ (0 == strcmp (ai->name,
+ name)) &&
+ ( (ACTION_UPDATE == ai->type) ||
+ (ACTION_SET == ai->type) ) ) )
+ continue;
+ if (ACTION_SET == ai->type)
{
- GNUNET_break (0);
- return;
- }
- ai = h->action_head;
- while (ai != NULL)
- {
- if ((0 == strcmp (ai->subsystem, h->subsystem)) &&
- (0 == strcmp (ai->name, name)) && ((ai->type == ACTION_UPDATE) ||
- (ai->type == ACTION_SET)))
- {
- if (ai->type == ACTION_SET)
- {
- if (type == ACTION_UPDATE)
- {
- delta = (int64_t) value;
- if (delta > 0)
- {
- ai->value += delta;
- }
- else
- {
- if (ai->value < -delta)
- ai->value = 0;
- else
- ai->value += delta;
- }
- }
- else
- {
- ai->value = value;
- }
- }
+ if (ACTION_UPDATE == type)
+ {
+ delta = (int64_t) value;
+ if (delta > 0)
+ {
+ /* update old set by new delta */
+ ai->value += delta;
+ }
+ else
+ {
+ /* update old set by new delta, but never go negative */
+ if (ai->value < -delta)
+ ai->value = 0;
else
- {
- if (type == ACTION_UPDATE)
- {
- delta = (int64_t) value;
- ai->value += delta;
- }
- else
- {
- ai->value = value;
- ai->type = type;
- }
- }
- ai->timeout =
- GNUNET_TIME_relative_to_absolute (SET_TRANSMIT_TIMEOUT);
- ai->make_persistent = make_persistent;
- return;
+ ai->value += delta;
}
- ai = ai->next;
+ }
+ else
+ {
+ /* new set overrides old set */
+ ai->value = value;
+ }
}
- ai = GNUNET_malloc (sizeof (struct GNUNET_STATISTICS_GetHandle));
+ else
+ {
+ if (ACTION_UPDATE == type)
+ {
+ /* make delta cummulative */
+ delta = (int64_t) value;
+ ai->value += delta;
+ }
+ else
+ {
+ /* drop old 'update', use new 'set' instead */
+ ai->value = value;
+ ai->type = type;
+ }
+ }
+ ai->timeout
+ = GNUNET_TIME_relative_to_absolute (SET_TRANSMIT_TIMEOUT);
+ ai->make_persistent
+ = make_persistent;
+ return;
+ }
+ /* no existing entry matches, create a fresh one */
+ ai = GNUNET_new (struct GNUNET_STATISTICS_GetHandle);
ai->sh = h;
ai->subsystem = GNUNET_strdup (h->subsystem);
ai->name = GNUNET_strdup (name);
ai->msize = nsize;
ai->value = value;
ai->type = type;
- insert_ai (h, ai);
+ GNUNET_CONTAINER_DLL_insert_tail (h->action_head,
+ h->action_tail,
+ ai);
+ schedule_action (h);
}
*/
void
GNUNET_STATISTICS_set (struct GNUNET_STATISTICS_Handle *handle,
- const char *name, uint64_t value, int make_persistent)
+ const char *name,
+ uint64_t value,
+ int make_persistent)
{
- if (handle == NULL)
+ if (NULL == handle)
return;
GNUNET_assert (GNUNET_NO == handle->do_destroy);
- add_setter_action (handle, name, make_persistent, value, ACTION_SET);
+ add_setter_action (handle,
+ name,
+ make_persistent,
+ value,
+ ACTION_SET);
}
*/
void
GNUNET_STATISTICS_update (struct GNUNET_STATISTICS_Handle *handle,
- const char *name, int64_t delta,
- int make_persistent)
+ const char *name,
+ int64_t delta,
+ int make_persistent)
{
- if (handle == NULL)
+ if (NULL == handle)
return;
- if (delta == 0)
+ if (0 == delta)
return;
GNUNET_assert (GNUNET_NO == handle->do_destroy);
- add_setter_action (handle, name, make_persistent, (uint64_t) delta,
- ACTION_UPDATE);
+ add_setter_action (handle,
+ name,
+ make_persistent,
+ (uint64_t) delta,
+ ACTION_UPDATE);
}
projects / oweals / gnunet.git / blobdiff