rvp->name = xbt_strdup(name);
rvp->read = SIMIX_mutex_init();
rvp->write = SIMIX_mutex_init();
- rvp->comm_mutex = SIMIX_mutex_init();
rvp->comm_fifo = xbt_fifo_new();
return rvp;
xbt_free(rvp->name);
SIMIX_mutex_destroy(rvp->read);
SIMIX_mutex_destroy(rvp->write);
- SIMIX_mutex_destroy(rvp->comm_mutex);
xbt_fifo_free(rvp->comm_fifo);
xbt_free(rvp);
}
* \brief Checks if there is a communication request queued in a rendez-vous matching our needs
* \param rvp The rendez-vous with the queue
* \param look_for_src boolean. True: we are receiver looking for sender; False: other way round
- * \return The communication request if found, a newly created one otherwise.
+ * \return The communication request if found, or a newly created one otherwise.
*/
smx_comm_t SIMIX_rdv_get_request_or_create(smx_rdv_t rvp, int look_for_src) {
- /* Get a communication request from the rendez-vous queue. If it is a receive
- request then return it, otherwise put it again in the queue and return NULL
+ /* Get a communication request from the rendez-vous queue. If it is the kind
+ of request we are looking for then return it, otherwise put it again in the
+ queue.
*/
- smx_comm_t comm_head = xbt_fifo_shift(rvp->comm_fifo);
+ smx_comm_t comm = xbt_fifo_shift(rvp->comm_fifo);
- if(comm_head != NULL) {
- if (( look_for_src && comm_head->src_host != NULL) ||
- (!look_for_src && comm_head->dst_host != NULL)) {
+ if(comm != NULL) {
+ if (( look_for_src && comm->src_host != NULL) ||
+ (!look_for_src && comm->dst_host != NULL)) {
- SIMIX_communication_use(comm_head);
- return comm_head;
+ SIMIX_communication_use(comm);
+ return comm;
}
}
- xbt_fifo_unshift(rvp->comm_fifo, comm_head);
+ xbt_fifo_unshift(rvp->comm_fifo, comm);
- /* no relevant peer found. Create a new comm action and set it up */
- comm_head = SIMIX_communication_new(rvp);
- SIMIX_rdv_push(rvp, comm_head);
- SIMIX_communication_use(comm_head);
+ /* no relevant request found. Create a new comm action and set it up */
+ comm = SIMIX_communication_new(rvp);
+ SIMIX_rdv_push(rvp, comm);
+ SIMIX_communication_use(comm);
- return comm_head;
+ return comm;
}
/******************************************************************************/
/* alloc structures */
smx_comm_t comm = xbt_new0(s_smx_comm_t, 1);
comm->cond = SIMIX_cond_init();
-
comm->rdv = rdv;
return comm;
if(comm->act != NULL)
SIMIX_action_destroy(comm->act);
- if(comm->data != NULL)
- xbt_free(comm->data);
-
xbt_free(comm->cond);
xbt_free(comm);
}
/**
* \brief Start the simulation of a communication request
- * \param comm The communicatino request
+ * \param comm The communication request
*/
static inline void SIMIX_communication_start(smx_comm_t comm)
{
comm->act = SIMIX_action_communicate(comm->src_host, comm->dst_host, NULL,
- comm->data_size, comm->rate);
+ comm->task_size, comm->rate);
SIMIX_register_action_to_condition(comm->act, comm->cond);
}
-static inline void SIMIX_communication_wait_for_completion(smx_comm_t comm)
+/**
+ * \brief Waits for communication completion and performs error checking
+ * \param comm The communication
+ * \param timeout The max amount of time to wait for the communication to finish
+ *
+ * Throws:
+ * - host_error if peer failed
+ * - timeout_error if communication reached the timeout specified
+ * - network_error if network failed or peer issued a timeout
+ */
+static inline void SIMIX_communication_wait_for_completion(smx_comm_t comm, double timeout)
{
- __SIMIX_cond_wait(comm->cond);
- if (comm->act) {
- SIMIX_unregister_action_to_condition(comm->act, comm->cond);
- SIMIX_action_destroy(comm->act);
- comm->act=NULL;
+ xbt_ex_t e;
+
+ if(timeout > 0){
+ TRY{
+ SIMIX_cond_wait_timeout(comm->cond, NULL, timeout);
+ }
+ CATCH(e){
+ /* If it's a timeout then cancel the communication and signal the other peer */
+ if(e.category == timeout_error)
+ SIMIX_action_cancel(comm->act);
+ SIMIX_cond_signal(comm->cond);
+ RETHROW;
+ }
+ }else{
+ SIMIX_cond_wait(comm->cond, NULL);
}
+
+ SIMIX_unregister_action_to_condition(comm->act, comm->cond);
+
/* Check for errors */
if (SIMIX_host_get_state(comm->dst_host) == 0){
THROW1(host_error, 0, "Destination host %s failed", comm->dst_host->name);
} else if (SIMIX_host_get_state(comm->src_host) == 0){
THROW1(host_error, 0, "Source host %s failed", comm->src_host->name);
- } else if (SIMIX_action_get_state(comm->act) == SURF_ACTION_FAILED) {
+ } else if (SIMIX_action_get_state(comm->act) == SURF_ACTION_FAILED){
THROW0(network_error, 0, "Link failure");
}
-
}
+
/******************************************************************************/
/* Synchronous Communication */
/******************************************************************************/
-/* Throws:
- * - host_error if peer failed
- * - network_error if network failed */
-
-void SIMIX_network_send(smx_rdv_t rdv, void *data, size_t size, double timeout, double rate)
+/* Throws:
+ * - host_error if peer failed
+ * - timeout_error if communication reached the timeout specified
+ * - network_error if network failed or peer issued a timeout
+ */
+void SIMIX_network_send(smx_rdv_t rdv, double task_size, double rate, double timeout, void *data, size_t data_size)
{
- /*double start_time = SIMIX_get_clock();*/
- void *smx_net_data;
smx_comm_t comm;
- /* Copy the message to the network */
- /*FIXME here the MC should allocate the space from the network storage area */
- smx_net_data = xbt_malloc(size);
- memcpy(smx_net_data, data, size);
-
- comm = SIMIX_rdv_get_request_or_create(rdv,0);
+ /* Setup communication request */
+ comm = SIMIX_rdv_get_request_or_create(rdv, 0);
comm->src_host = SIMIX_host_self();
- comm->data = smx_net_data;
- comm->data_size = size;
+ comm->task_size = task_size;
comm->rate = rate;
+ comm->data = data;
+ comm->data_size = data_size;
/* If the receiver is already there, start the communication */
/* If it's not here already, it will start that communication itself later on */
/* Wait for communication completion */
/* FIXME: if the semantic is non blocking, it shouldn't wait on the condition here */
/* FIXME: add timeout checking stuff */
- SIMIX_communication_wait_for_completion(comm);
+ SIMIX_communication_wait_for_completion(comm, timeout);
SIMIX_communication_destroy(comm);
}
-void SIMIX_network_recv(smx_rdv_t rdv, void **data, size_t *size, double timeout)
+/* Throws:
+ * - host_error if peer failed
+ * - timeout_error if communication reached the timeout specified
+ * - network_error if network failed or peer issued a timeout
+ */
+void SIMIX_network_recv(smx_rdv_t rdv, double timeout, void **data, size_t *data_size)
{
- /*double start_time = SIMIX_get_clock();*/
smx_comm_t comm;
- smx_host_t my_host = SIMIX_host_self();
- comm = SIMIX_rdv_get_request_or_create(rdv,1);
+ /* Setup communication request */
+ comm = SIMIX_rdv_get_request_or_create(rdv, 1);
comm->dst_host = SIMIX_host_self();
comm->dest_buff = data;
+ comm->dest_buff_size = data_size;
/* If the sender is already there, start the communication */
/* If it's not here already, it will start that communication itself later on */
/* Wait for communication completion */
/* FIXME: if the semantic is non blocking, it shouldn't wait on the condition here */
/* FIXME: add timeout checking stuff */
- SIMIX_communication_wait_for_completion(comm);
-
- /* We are OK, let's copy the message to receiver's buffer */
- *size = *size < comm->data_size ? *size : comm->data_size;
- memcpy(*data, comm->data, *size);
+ SIMIX_communication_wait_for_completion(comm, timeout);
SIMIX_communication_destroy(comm);
}
+ /* FIXME: MOVE DATA COPY TO MAESTRO AT ACTION SIGNAL TIME
+ We are OK, let's copy the message to receiver's buffer
+ *size = *size < comm->data_size ? *size : comm->data_size;
+ memcpy(*data, comm->data, *size);*/
