-
-/**
- * \brief Returns an approximative estimated time for the given
- * communication amount between two workstations
- *
- * \param src the first workstation
- * \param dst the second workstation
- * \param bytes_amount the communication amount you want to evaluate (in bytes)
- * \return an approximative estimated communication time for the given bytes amount
- * between the workstations (in seconds)
- */
-double SD_route_get_communication_time(SD_workstation_t src,
- SD_workstation_t dst,
- double bytes_amount)
-{
-
-
- /* total time = latency + transmission time of the slowest link
- transmission time of a link = communication amount / link bandwidth */
-
- const SD_link_t *links;
- xbt_dynar_t route = NULL;
- int nb_links;
- double bandwidth, min_bandwidth;
- double latency;
- int i;
-
- xbt_assert(bytes_amount >= 0, "bytes_amount must be greater than or equal to zero");
-
-
- if (bytes_amount == 0.0)
- return 0.0;
-
- routing_platf->getRouteAndLatency(src->pimpl_netcard, dst->pimpl_netcard,
- &route, &latency);
-
- links = SD_route_get_list(src, dst);
- nb_links = SD_route_get_size(src, dst);
- min_bandwidth = -1.0;
-
- for (i = 0; i < nb_links; i++) {
- bandwidth = SD_link_get_current_bandwidth(links[i]);
- if (bandwidth < min_bandwidth || min_bandwidth == -1.0)
- min_bandwidth = bandwidth;
- }
-
- return latency + (bytes_amount / min_bandwidth);
-}
-
-/**
- * \brief Returns the access mode of this workstation.
- *
- * \param workstation a workstation
- * \return the access mode for the tasks running on this workstation:
- * SD_WORKSTATION_SHARED_ACCESS or SD_WORKSTATION_SEQUENTIAL_ACCESS
- *
- * \see SD_workstation_set_access_mode(), e_SD_workstation_access_mode_t
- */
-e_SD_workstation_access_mode_t
-SD_workstation_get_access_mode(SD_workstation_t workstation)
-{
- return sg_host_sd(workstation)->access_mode;
-}
-
-/**
- * \brief Sets the access mode for the tasks that will be executed on a workstation
- *
- * By default, a workstation model is shared, i.e. several tasks
- * can be executed at the same time on a workstation. The CPU power of
- * the workstation is shared between the running tasks on the workstation.
- * In sequential mode, only one task can use the workstation, and the other
- * tasks wait in a FIFO.
- *
- * \param workstation a workstation
- * \param access_mode the access mode you want to set to this workstation:
- * SD_WORKSTATION_SHARED_ACCESS or SD_WORKSTATION_SEQUENTIAL_ACCESS
- *
- * \see SD_workstation_get_access_mode(), e_SD_workstation_access_mode_t
- */
-void SD_workstation_set_access_mode(SD_workstation_t workstation,
- e_SD_workstation_access_mode_t
- access_mode)
-{
- xbt_assert(access_mode != SD_WORKSTATION_SEQUENTIAL_ACCESS ||
- access_mode != SD_WORKSTATION_SHARED_ACCESS,
- "Trying to set an invalid access mode");
-
- if (access_mode == sg_host_sd(workstation)->access_mode) {
- return; // nothing is changed
- }
-
- sg_host_sd(workstation)->access_mode = access_mode;
-
- if (access_mode == SD_WORKSTATION_SHARED_ACCESS) {
- xbt_fifo_free(sg_host_sd(workstation)->task_fifo);
- sg_host_sd(workstation)->task_fifo = NULL;
- } else {
- sg_host_sd(workstation)->task_fifo = xbt_fifo_new();
- }
-}
-
-/**
- * \brief Return the list of mounted storages on a workstation.
- *
- * \param workstation a workstation
- * \return a dynar containing all mounted storages on the workstation
- */
-xbt_dict_t SD_workstation_get_mounted_storage_list(SD_workstation_t workstation){
- return workstation->extension<simgrid::surf::Host>()->getMountedStorageList();
-}
-
-/**
- * \brief Return the list of mounted storages on a workstation.
- *
- * \param workstation a workstation
- * \return a dynar containing all mounted storages on the workstation
- */
-xbt_dynar_t SD_workstation_get_attached_storage_list(SD_workstation_t workstation){
- return surf_host_get_attached_storage_list(workstation);
-}
-
-/**
- * \brief Returns the host name the storage is attached to
- *
- * This functions checks whether a storage is a valid pointer or not and return its name.
- */
-const char *SD_storage_get_host(msg_storage_t storage) {
- xbt_assert((storage != NULL), "Invalid parameters");
- SD_storage_priv_t priv = SD_storage_priv(storage);
- return priv->host;
-}
-
-/* Returns whether a task can start now on a workstation*/
-/*
- int __SD_workstation_can_start(SD_workstation_t workstation, SD_task_t task) {
- SD_CHECK_INIT_DONE();
- xbt_assert(workstation != NULL && task != NULL, "Invalid parameter");
-
- return !__SD_workstation_is_busy(workstation) &&
- (xbt_fifo_size(workstation->task_fifo) == 0) || xbt_fifo_get_first_item(workstation->task_fifo) == task);
- }
-*/
-
-/* Returns whether a workstation is busy. A workstation is busy is it is
- * in sequential mode and a task is running on it or the fifo is not empty.
- */
-int __SD_workstation_is_busy(SD_workstation_t workstation)
-{
- XBT_DEBUG
- ("Workstation '%s' access mode: '%s', current task: %s, fifo size: %d",
- SD_workstation_get_name(workstation),
- (sg_host_sd(workstation)->access_mode ==
- SD_WORKSTATION_SHARED_ACCESS) ? "SHARED" : "FIFO",
- (sg_host_sd(workstation)->current_task ?
- SD_task_get_name(sg_host_sd(workstation)->current_task)
- : "none"),
- (sg_host_sd(workstation)->task_fifo ? xbt_fifo_size(sg_host_sd(workstation)->task_fifo) :
- 0));
-
- return sg_host_sd(workstation)->access_mode == SD_WORKSTATION_SEQUENTIAL_ACCESS &&
- (sg_host_sd(workstation)->current_task != NULL
- || xbt_fifo_size(sg_host_sd(workstation)->task_fifo) > 0);
-}
-
-/* Destroys a workstation.
- */
-void __SD_workstation_destroy(void *workstation)
-{
-
- if (workstation==NULL)
- return;
- SD_workstation_priv_t w;
-
- /* workstation->surf_workstation is freed by surf_exit and workstation->data is freed by the user */
-
- w = (SD_workstation_priv_t) workstation;
-
- if (w->access_mode == SD_WORKSTATION_SEQUENTIAL_ACCESS) {
- xbt_fifo_free(w->task_fifo);
- }
- xbt_free(w);
-}
-
-/**
- * \brief Returns the kind of the task currently running on a workstation
- * Only call this with sequential access mode set
- * \param workstation a workstation */
-SD_task_t SD_workstation_get_current_task(SD_workstation_t workstation)
-{
- xbt_assert(sg_host_sd(workstation)->access_mode == SD_WORKSTATION_SEQUENTIAL_ACCESS,
- "Access mode must be set to SD_WORKSTATION_SEQUENTIAL_ACCESS"
- " to use this function");
-
- return (sg_host_sd(workstation)->current_task);
-}
-