* @author Christian Grothoff
*/
#include "platform.h"
+#include "gnunet_util_lib.h"
#include "gnunet_testbed_service.h"
#include "gnunet_core_service.h"
-#include "gnunet_constants.h"
#include "gnunet_transport_service.h"
-#include "gnunet_hello_lib.h"
-#include "gnunet_container_lib.h"
#include "testbed_api.h"
#include "testbed_api_hosts.h"
+#include "testbed_api_operations.h"
+#include "testbed_api_sd.h"
/**
* Generic logging shorthand
* The controller at which this host is registered
*/
const struct GNUNET_TESTBED_Controller *controller;
-
+
/**
* The next ptr for DLL
*/
};
+/**
+ * A slot to record time taken by an overlay connect operation
+ */
+struct TimeSlot
+{
+ /**
+ * A key to identify this timeslot
+ */
+ void *key;
+
+ /**
+ * Time
+ */
+ struct GNUNET_TIME_Relative time;
+
+ /**
+ * Number of timing values accumulated
+ */
+ unsigned int nvals;
+};
+
+
/**
* Opaque handle to a host running experiments managed by the testing framework.
* The master process must be able to SSH to this host without password (via
*/
struct RegisteredController *rc_tail;
+ /**
+ * Operation queue for simultaneous overlay connect operations target at this
+ * host
+ */
+ struct OperationQueue *opq_parallel_overlay_connect_operations;
+
+ /**
+ * An array of timing slots; size should be equal to the current number of parallel
+ * overlay connects
+ */
+ struct TimeSlot *tslots;
+
+ /**
+ * Handle for SD calculations amount parallel overlay connect operation finish
+ * times
+ */
+ struct SDHandle *poc_sd;
+
+ /**
+ * The number of parallel overlay connects we do currently
+ */
+ unsigned int num_parallel_connects;
+
+ /**
+ * Counter to indicate when all the available time slots are filled
+ */
+ unsigned int tslots_filled;
+
/**
* Global ID we use to refer to a host on the network
*/
/**
* The size of the available hosts list
*/
-static uint32_t host_list_size;
+static unsigned int host_list_size;
/**
* Lookup a host by ID.
- *
+ *
* @param id global host ID assigned to the host; 0 is
* reserved to always mean 'localhost'
* @return handle to the host, NULL if host not found
* Create a host by ID; given this host handle, we could not
* run peers at the host, but we can talk about the host
* internally.
- *
+ *
* @param id global host ID assigned to the host; 0 is
* reserved to always mean 'localhost'
* @return handle to the host, NULL on error
/**
* Obtain the host's unique global ID.
- *
+ *
* @param host handle to the host, NULL means 'localhost'
* @return id global host ID assigned to the host (0 is
* 'localhost', but then obviously not globally unique)
*/
uint32_t
-GNUNET_TESTBED_host_get_id_ (const struct GNUNET_TESTBED_Host *host)
+GNUNET_TESTBED_host_get_id_ (const struct GNUNET_TESTBED_Host * host)
{
return host->id;
}
/**
* Obtain the host's hostname.
- *
+ *
* @param host handle to the host, NULL means 'localhost'
* @return hostname of the host
*/
const char *
-GNUNET_TESTBED_host_get_hostname_ (const struct GNUNET_TESTBED_Host *host)
+GNUNET_TESTBED_host_get_hostname (const struct GNUNET_TESTBED_Host *host)
{
return host->hostname;
}
/**
* Obtain the host's username
- *
+ *
* @param host handle to the host, NULL means 'localhost'
* @return username to login to the host
*/
/**
* Obtain the host's ssh port
- *
+ *
* @param host handle to the host, NULL means 'localhost'
* @return username to login to the host
*/
uint16_t
-GNUNET_TESTBED_host_get_ssh_port_ (const struct GNUNET_TESTBED_Host *host)
+GNUNET_TESTBED_host_get_ssh_port_ (const struct GNUNET_TESTBED_Host * host)
{
return host->port;
}
/**
* Create a host to run peers and controllers on.
- *
+ *
* @param id global host ID assigned to the host; 0 is
* reserved to always mean 'localhost'
* @param hostname name of the host, use "NULL" for localhost
* @return handle to the host, NULL on error
*/
struct GNUNET_TESTBED_Host *
-GNUNET_TESTBED_host_create_with_id (uint32_t id,
- const char *hostname,
- const char *username,
- uint16_t port)
+GNUNET_TESTBED_host_create_with_id (uint32_t id, const char *hostname,
+ const char *username, uint16_t port)
{
struct GNUNET_TESTBED_Host *host;
- uint32_t new_size;
+ unsigned int new_size;
if ((id < host_list_size) && (NULL != host_list[id]))
{
return NULL;
}
host = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Host));
- host->hostname = hostname;
- host->username = username;
+ host->hostname = (NULL != hostname) ? GNUNET_strdup (hostname) : NULL;
+ host->username = (NULL != username) ? GNUNET_strdup (username) : NULL;
host->id = id;
- host->port = (0 == port) ? 22 : port;
+ host->port = (0 == port) ? 22 : port;
+ host->opq_parallel_overlay_connect_operations =
+ GNUNET_TESTBED_operation_queue_create_ (0);
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (host, 1);
+ host->poc_sd = GNUNET_TESTBED_SD_init_ (10);
new_size = host_list_size;
while (id >= new_size)
new_size += HOST_LIST_GROW_STEP;
if (new_size != host_list_size)
- {
- host_list = GNUNET_realloc (host_list, sizeof (struct GNUNET_TESTBED_Host *)
- * new_size);
- (void) memset(&host_list[host_list_size], 0,
- sizeof (struct GNUNET_TESTBED_Host *) *
- (new_size - host_list_size));
- host_list_size = new_size;
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Adding host with id: %u\n", host->id);
+ GNUNET_array_grow (host_list, host_list_size, new_size);
+ GNUNET_assert (id < host_list_size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Adding host with id: %u\n", host->id);
host_list[id] = host;
return host;
}
/**
* Create a host to run peers and controllers on.
- *
+ *
* @param hostname name of the host, use "NULL" for localhost
* @param username username to use for the login; may be NULL
* @param port port number to use for ssh; use 0 to let ssh decide
* @return handle to the host, NULL on error
*/
struct GNUNET_TESTBED_Host *
-GNUNET_TESTBED_host_create (const char *hostname,
- const char *username,
- uint16_t port)
+GNUNET_TESTBED_host_create (const char *hostname, const char *username,
+ uint16_t port)
{
static uint32_t uid_generator;
if (NULL == hostname)
return GNUNET_TESTBED_host_create_with_id (0, hostname, username, port);
- return GNUNET_TESTBED_host_create_with_id (++uid_generator,
- hostname, username,
- port);
+ return GNUNET_TESTBED_host_create_with_id (++uid_generator, hostname,
+ username, port);
}
* Load a set of hosts from a configuration file.
*
* @param filename file with the host specification
- * @param hosts set to the hosts found in the file
+ * @param hosts set to the hosts found in the file; caller must free this if
+ * number of hosts returned is greater than 0
* @return number of hosts returned in 'hosts', 0 on error
*/
unsigned int
GNUNET_TESTBED_hosts_load_from_file (const char *filename,
- struct GNUNET_TESTBED_Host **hosts)
+ struct GNUNET_TESTBED_Host ***hosts)
{
- // see testing_group.c, GNUNET_TESTING_hosts_load
- GNUNET_break (0);
- return 0;
+ //struct GNUNET_TESTBED_Host **host_array;
+ struct GNUNET_TESTBED_Host *starting_host;
+ char *data;
+ char *buf;
+ char username[256];
+ char hostname[256];
+ uint64_t fs;
+ short int port;
+ int ret;
+ unsigned int offset;
+ unsigned int count;
+
+
+ GNUNET_assert (NULL != filename);
+ if (GNUNET_YES != GNUNET_DISK_file_test (filename))
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("Hosts file %s not found\n"), filename);
+ return 0;
+ }
+ if (GNUNET_OK !=
+ GNUNET_DISK_file_size (filename, &fs, GNUNET_YES, GNUNET_YES))
+ fs = 0;
+ if (0 == fs)
+ {
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("Hosts file %s has no data\n"), filename);
+ return 0;
+ }
+ data = GNUNET_malloc (fs);
+ if (fs != GNUNET_DISK_fn_read (filename, data, fs))
+ {
+ GNUNET_free (data);
+ LOG (GNUNET_ERROR_TYPE_WARNING, _("Hosts file %s cannot be read\n"),
+ filename);
+ return 0;
+ }
+ buf = data;
+ offset = 0;
+ starting_host = NULL;
+ count = 0;
+ while (offset < (fs - 1))
+ {
+ offset++;
+ if (((data[offset] == '\n')) && (buf != &data[offset]))
+ {
+ data[offset] = '\0';
+ ret =
+ SSCANF (buf, "%255[a-zA-Z0-9_]@%255[a-zA-Z0-9.]:%5hd", username,
+ hostname, &port);
+ if (3 == ret)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Successfully read host %s, port %d and user %s from file\n",
+ hostname, port, username);
+ /* We store hosts in a static list; hence we only require the starting
+ * host pointer in that list to access the newly created list of hosts */
+ if (NULL == starting_host)
+ starting_host = GNUNET_TESTBED_host_create (hostname, username, port);
+ else
+ (void) GNUNET_TESTBED_host_create (hostname, username, port);
+ count++;
+ }
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Error reading line `%s' in hostfile\n", buf);
+ buf = &data[offset + 1];
+ }
+ else if ((data[offset] == '\n') || (data[offset] == '\0'))
+ buf = &data[offset + 1];
+ }
+ GNUNET_free (data);
+ if (NULL == starting_host)
+ return 0;
+ *hosts = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Host *) * count);
+ memcpy (*hosts, &host_list[GNUNET_TESTBED_host_get_id_ (starting_host)],
+ sizeof (struct GNUNET_TESTBED_Host *) * count);
+ return count;
}
*/
void
GNUNET_TESTBED_host_destroy (struct GNUNET_TESTBED_Host *host)
-{
+{
struct RegisteredController *rc;
uint32_t id;
GNUNET_assert (host_list[host->id] == host);
host_list[host->id] = NULL;
/* clear registered controllers list */
- for (rc=host->rc_head; NULL != rc; rc=host->rc_head)
+ for (rc = host->rc_head; NULL != rc; rc = host->rc_head)
{
GNUNET_CONTAINER_DLL_remove (host->rc_head, host->rc_tail, rc);
GNUNET_free (rc);
}
+ GNUNET_free_non_null ((char *) host->username);
+ GNUNET_free_non_null ((char *) host->hostname);
+ GNUNET_TESTBED_operation_queue_destroy_
+ (host->opq_parallel_overlay_connect_operations);
+ GNUNET_TESTBED_SD_destroy_ (host->poc_sd);
+ GNUNET_free_non_null (host->tslots);
GNUNET_free (host);
while (host_list_size >= HOST_LIST_GROW_STEP)
{
- for (id = host_list_size - 1;
- id > host_list_size - HOST_LIST_GROW_STEP; id--)
+ for (id = host_list_size - 1; id > host_list_size - HOST_LIST_GROW_STEP;
+ id--)
if (NULL != host_list[id])
- break;
+ break;
if (id != host_list_size - HOST_LIST_GROW_STEP)
break;
if (NULL != host_list[id])
break;
host_list_size -= HOST_LIST_GROW_STEP;
}
- host_list = GNUNET_realloc (host_list, sizeof (struct GNUNET_TESTBED_Host) *
- host_list_size);
+ host_list =
+ GNUNET_realloc (host_list,
+ sizeof (struct GNUNET_TESTBED_Host *) * host_list_size);
}
*/
void
GNUNET_TESTBED_mark_host_registered_at_ (struct GNUNET_TESTBED_Host *host,
- const struct GNUNET_TESTBED_Controller
- * const controller)
+ const struct GNUNET_TESTBED_Controller
+ *const controller)
{
struct RegisteredController *rc;
-
- for (rc=host->rc_head; NULL != rc; rc=rc->next)
+
+ for (rc = host->rc_head; NULL != rc; rc = rc->next)
{
- if (controller == rc->controller) /* already registered at controller */
+ if (controller == rc->controller) /* already registered at controller */
{
GNUNET_break (0);
return;
}
rc = GNUNET_malloc (sizeof (struct RegisteredController));
rc->controller = controller;
- //host->controller = controller;
GNUNET_CONTAINER_DLL_insert_tail (host->rc_head, host->rc_tail, rc);
}
*/
int
GNUNET_TESTBED_is_host_registered_ (const struct GNUNET_TESTBED_Host *host,
- const struct GNUNET_TESTBED_Controller
- *const controller)
+ const struct GNUNET_TESTBED_Controller
+ *const controller)
{
struct RegisteredController *rc;
-
- for (rc=host->rc_head; NULL != rc; rc=rc->next)
+
+ for (rc = host->rc_head; NULL != rc; rc = rc->next)
{
- if (controller == rc->controller) /* already registered at controller */
+ if (controller == rc->controller) /* already registered at controller */
{
return GNUNET_YES;
}
}
+/**
+ * The handle for whether a host is habitable or not
+ */
+struct GNUNET_TESTBED_HostHabitableCheckHandle
+{
+ /**
+ * The host to check
+ */
+ const struct GNUNET_TESTBED_Host *host;
+
+ /* /\** */
+ /* * the configuration handle to lookup the path of the testbed helper */
+ /* *\/ */
+ /* const struct GNUNET_CONFIGURATION_Handle *cfg; */
+
+ /**
+ * The callback to call once we have the status
+ */
+ GNUNET_TESTBED_HostHabitableCallback cb;
+
+ /**
+ * The callback closure
+ */
+ void *cb_cls;
+
+ /**
+ * The process handle for the SSH process
+ */
+ struct GNUNET_OS_Process *auxp;
+
+ /**
+ * The SSH destination address string
+ */
+ char *ssh_addr;
+
+ /**
+ * The destination port string
+ */
+ char *portstr;
+
+ /**
+ * The path for hte testbed helper binary
+ */
+ char *helper_binary_path;
+
+ /**
+ * Task id for the habitability check task
+ */
+ GNUNET_SCHEDULER_TaskIdentifier habitability_check_task;
+
+ /**
+ * How long we wait before checking the process status. Should grow
+ * exponentially
+ */
+ struct GNUNET_TIME_Relative wait_time;
+
+};
+
+
+/**
+ * Task for checking whether a host is habitable or not
+ *
+ * @param cls GNUNET_TESTBED_HostHabitableCheckHandle
+ * @param tc the scheduler task context
+ */
+static void
+habitability_check (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct GNUNET_TESTBED_HostHabitableCheckHandle *h = cls;
+ void *cb_cls;
+ GNUNET_TESTBED_HostHabitableCallback cb;
+ const struct GNUNET_TESTBED_Host *host;
+ unsigned long code;
+ enum GNUNET_OS_ProcessStatusType type;
+ int ret;
+
+ h->habitability_check_task = GNUNET_SCHEDULER_NO_TASK;
+ ret = GNUNET_OS_process_status (h->auxp, &type, &code);
+ if (GNUNET_SYSERR == ret)
+ {
+ GNUNET_break (0);
+ ret = GNUNET_NO;
+ goto call_cb;
+ }
+ if (GNUNET_NO == ret)
+ {
+ h->wait_time = GNUNET_TIME_STD_BACKOFF (h->wait_time);
+ h->habitability_check_task =
+ GNUNET_SCHEDULER_add_delayed (h->wait_time, &habitability_check, h);
+ return;
+ }
+ GNUNET_OS_process_destroy (h->auxp);
+ h->auxp = NULL;
+ ret = (0 != code) ? GNUNET_NO : GNUNET_YES;
+
+call_cb:
+ GNUNET_free (h->ssh_addr);
+ GNUNET_free (h->portstr);
+ GNUNET_free (h->helper_binary_path);
+ if (NULL != h->auxp)
+ GNUNET_OS_process_destroy (h->auxp);
+ cb = h->cb;
+ cb_cls = h->cb_cls;
+ host = h->host;
+ GNUNET_free (h);
+ if (NULL != cb)
+ cb (cb_cls, host, ret);
+}
+
+
+/**
+ * Checks whether a host can be used to start testbed service
+ *
+ * @param host the host to check
+ * @param config the configuration handle to lookup the path of the testbed
+ * helper
+ * @param cb the callback to call to inform about habitability of the given host
+ * @param cb_cls the closure for the callback
+ * @return NULL upon any error or a handle which can be passed to
+ * GNUNET_TESTBED_is_host_habitable_cancel()
+ */
+struct GNUNET_TESTBED_HostHabitableCheckHandle *
+GNUNET_TESTBED_is_host_habitable (const struct GNUNET_TESTBED_Host *host,
+ const struct GNUNET_CONFIGURATION_Handle
+ *config,
+ GNUNET_TESTBED_HostHabitableCallback cb,
+ void *cb_cls)
+{
+ struct GNUNET_TESTBED_HostHabitableCheckHandle *h;
+ char *remote_args[11];
+ const char *hostname;
+ unsigned int argp;
+
+ h = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostHabitableCheckHandle));
+ h->cb = cb;
+ h->cb_cls = cb_cls;
+ h->host = host;
+ hostname = (NULL == host->hostname) ? "127.0.0.1" : host->hostname;
+ if (NULL == host->username)
+ h->ssh_addr = GNUNET_strdup (hostname);
+ else
+ GNUNET_asprintf (&h->ssh_addr, "%s@%s", host->username, hostname);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (config, "testbed",
+ "HELPER_BINARY_PATH",
+ &h->helper_binary_path))
+ h->helper_binary_path =
+ GNUNET_OS_get_libexec_binary_path (HELPER_TESTBED_BINARY);
+ argp = 0;
+ remote_args[argp++] = "ssh";
+ GNUNET_asprintf (&h->portstr, "%u", host->port);
+ remote_args[argp++] = "-p";
+ remote_args[argp++] = h->portstr;
+ remote_args[argp++] = "-o";
+ remote_args[argp++] = "BatchMode=yes";
+ remote_args[argp++] = "-o";
+ remote_args[argp++] = "NoHostAuthenticationForLocalhost=yes";
+ remote_args[argp++] = h->ssh_addr;
+ remote_args[argp++] = "stat";
+ remote_args[argp++] = h->helper_binary_path;
+ remote_args[argp++] = NULL;
+ GNUNET_assert (argp == 11);
+ h->auxp =
+ GNUNET_OS_start_process_vap (GNUNET_NO, GNUNET_OS_INHERIT_STD_ERR, NULL,
+ NULL, "ssh", remote_args);
+ if (NULL == h->auxp)
+ {
+ GNUNET_break (0); /* Cannot exec SSH? */
+ GNUNET_free (h->ssh_addr);
+ GNUNET_free (h->portstr);
+ GNUNET_free (h->helper_binary_path);
+ GNUNET_free (h);
+ return NULL;
+ }
+ h->wait_time = GNUNET_TIME_STD_BACKOFF (h->wait_time);
+ h->habitability_check_task =
+ GNUNET_SCHEDULER_add_delayed (h->wait_time, &habitability_check, h);
+ return h;
+}
+
+
+/**
+ * Function to cancel a request started using GNUNET_TESTBED_is_host_habitable()
+ *
+ * @param handle the habitability check handle
+ */
+void
+GNUNET_TESTBED_is_host_habitable_cancel (struct
+ GNUNET_TESTBED_HostHabitableCheckHandle
+ *handle)
+{
+ GNUNET_SCHEDULER_cancel (handle->habitability_check_task);
+ (void) GNUNET_OS_process_kill (handle->auxp, SIGTERM);
+ (void) GNUNET_OS_process_wait (handle->auxp);
+ GNUNET_OS_process_destroy (handle->auxp);
+ GNUNET_free (handle->ssh_addr);
+ GNUNET_free (handle->portstr);
+ GNUNET_free (handle->helper_binary_path);
+ GNUNET_free (handle);
+}
+
+
+/**
+ * Initializes the operation queue for parallel overlay connects
+ *
+ * @param h the host handle
+ * @param npoc the number of parallel overlay connects - the queue size
+ */
+void
+GNUNET_TESTBED_set_num_parallel_overlay_connects_ (struct
+ GNUNET_TESTBED_Host *h,
+ unsigned int npoc)
+{
+ //fprintf (stderr, "%d", npoc);
+ GNUNET_free_non_null (h->tslots);
+ h->tslots_filled = 0;
+ h->num_parallel_connects = npoc;
+ h->tslots = GNUNET_malloc (npoc * sizeof (struct TimeSlot));
+ GNUNET_TESTBED_operation_queue_reset_max_active_
+ (h->opq_parallel_overlay_connect_operations, npoc);
+}
+
+
+/**
+ * Returns a timing slot which will be exclusively locked
+ *
+ * @param h the host handle
+ * @param key a pointer which is associated to the returned slot; should not be
+ * NULL. It serves as a key to determine the correct owner of the slot
+ * @return the time slot index in the array of time slots in the controller
+ * handle
+ */
+unsigned int
+GNUNET_TESTBED_get_tslot_ (struct GNUNET_TESTBED_Host *h, void *key)
+{
+ unsigned int slot;
+
+ GNUNET_assert (NULL != h->tslots);
+ GNUNET_assert (NULL != key);
+ for (slot = 0; slot < h->num_parallel_connects; slot++)
+ if (NULL == h->tslots[slot].key)
+ {
+ h->tslots[slot].key = key;
+ return slot;
+ }
+ GNUNET_assert (0); /* We should always find a free tslot */
+}
+
+
+/**
+ * Decides whether any change in the number of parallel overlay connects is
+ * necessary to adapt to the load on the system
+ *
+ * @param h the host handle
+ */
+static void
+decide_npoc (struct GNUNET_TESTBED_Host *h)
+{
+ struct GNUNET_TIME_Relative avg;
+ int sd;
+ unsigned int slot;
+ unsigned int nvals;
+
+ if (h->tslots_filled != h->num_parallel_connects)
+ return;
+ avg = GNUNET_TIME_UNIT_ZERO;
+ nvals = 0;
+ for (slot = 0; slot < h->num_parallel_connects; slot++)
+ {
+ avg = GNUNET_TIME_relative_add (avg, h->tslots[slot].time);
+ nvals += h->tslots[slot].nvals;
+ }
+ GNUNET_assert (nvals >= h->num_parallel_connects);
+ avg = GNUNET_TIME_relative_divide (avg, nvals);
+ GNUNET_assert (GNUNET_TIME_UNIT_FOREVER_REL.rel_value != avg.rel_value);
+ sd = GNUNET_TESTBED_SD_deviation_factor_ (h->poc_sd, (unsigned int) avg.rel_value);
+ if ( (sd <= 5) ||
+ (0 == GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
+ h->num_parallel_connects)) )
+ GNUNET_TESTBED_SD_add_data_ (h->poc_sd, (unsigned int) avg.rel_value);
+ if (GNUNET_SYSERR == sd)
+ {
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h,
+ h->num_parallel_connects);
+ return;
+ }
+ GNUNET_assert (0 <= sd);
+ if (0 == sd)
+ {
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h,
+ h->num_parallel_connects
+ * 2);
+ return;
+ }
+ if (1 == sd)
+ {
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h,
+ h->num_parallel_connects
+ + 1);
+ return;
+ }
+ if (1 == h->num_parallel_connects)
+ {
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h, 1);
+ return;
+ }
+ if (2 == sd)
+ {
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h,
+ h->num_parallel_connects
+ - 1);
+ return;
+ }
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h,
+ h->num_parallel_connects /
+ 2);
+}
+
+
+/**
+ * Releases a time slot thus making it available for be used again
+ *
+ * @param h the host handle
+ * @param index the index of the the time slot
+ * @param key the key to prove ownership of the timeslot
+ * @return GNUNET_YES if the time slot is successfully removed; GNUNET_NO if the
+ * time slot cannot be removed - this could be because of the index
+ * greater than existing number of time slots or `key' being different
+ */
+int
+GNUNET_TESTBED_release_time_slot_ (struct GNUNET_TESTBED_Host *h,
+ unsigned int index, void *key)
+{
+ struct TimeSlot *slot;
+
+ GNUNET_assert (NULL != key);
+ if (index >= h->num_parallel_connects)
+ return GNUNET_NO;
+ slot = &h->tslots[index];
+ if (key != slot->key)
+ return GNUNET_NO;
+ slot->key = NULL;
+ return GNUNET_YES;
+}
+
+
+/**
+ * Function to update a time slot
+ *
+ * @param h the host handle
+ * @param index the index of the time slot to update
+ * @param key the key to identify ownership of the slot
+ * @param time the new time
+ * @param failed should this reading be treated as coming from a fail event
+ */
+void
+GNUNET_TESTBED_update_time_slot_ (struct GNUNET_TESTBED_Host *h,
+ unsigned int index, void *key,
+ struct GNUNET_TIME_Relative time, int failed)
+{
+ struct TimeSlot *slot;
+
+ if (GNUNET_YES == failed)
+ {
+ if (1 == h->num_parallel_connects)
+ {
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h, 1);
+ return;
+ }
+ GNUNET_TESTBED_set_num_parallel_overlay_connects_ (h,
+ h->num_parallel_connects
+ - 1);
+ }
+ if (GNUNET_NO == GNUNET_TESTBED_release_time_slot_ (h, index, key))
+ return;
+ slot = &h->tslots[index];
+ slot->nvals++;
+ if (GNUNET_TIME_UNIT_ZERO.rel_value == slot->time.rel_value)
+ {
+ slot->time = time;
+ h->tslots_filled++;
+ decide_npoc (h);
+ return;
+ }
+ slot->time = GNUNET_TIME_relative_add (slot->time, time);
+}
+
+
+/**
+ * Queues the given operation in the queue for parallel overlay connects of the
+ * given host
+ *
+ * @param h the host handle
+ * @param op the operation to queue in the given host's parally overlay connect
+ * queue
+ */
+void
+GNUNET_TESTBED_host_queue_oc (struct GNUNET_TESTBED_Host *h,
+ struct GNUNET_TESTBED_Operation *op)
+{
+ GNUNET_TESTBED_operation_queue_insert_
+ (h->opq_parallel_overlay_connect_operations, op);
+}
+
/* end of testbed_api_hosts.c */
projects / oweals / gnunet.git / blobdiff