-/* $Id$ */
-
-/* Copyright (c) 2009 Cristian Rosa.
- All rights reserved. */
+/* Copyright (c) 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "private.h"
#include "xbt/log.h"
+#include "mc/mc.h"
+#include "xbt/dict.h"
+
+/* Pimple to get an histogram of message sizes in the simulation */
+xbt_dict_t msg_sizes = NULL;
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+xbt_dict_t latency_limited_dict = NULL;
+#endif
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_network, simix,
"Logging specific to SIMIX (network)");
/******************************************************************************/
/* Rendez-Vous Points */
-/******************************************************************************/
+/******************************************************************************/
/**
* \brief Creates a new rendez-vous point
*/
void SIMIX_rdv_destroy(smx_rdv_t rdv)
{
- if(rdv->name)
+ if (rdv->name)
xbt_free(rdv->name);
SIMIX_mutex_destroy(rdv->read);
SIMIX_mutex_destroy(rdv->write);
* \param rdv The rendez-vous point
* \param comm The communication request
*/
-static inline void SIMIX_rdv_push(smx_rdv_t rdv, smx_comm_t comm)
+static XBT_INLINE void SIMIX_rdv_push(smx_rdv_t rdv, smx_comm_t comm)
{
xbt_fifo_push(rdv->comm_fifo, comm);
comm->rdv = rdv;
* \param rdv The rendez-vous point
* \param comm The communication request
*/
-static inline void SIMIX_rdv_remove(smx_rdv_t rdv, smx_comm_t comm)
+static XBT_INLINE void SIMIX_rdv_remove(smx_rdv_t rdv, smx_comm_t comm)
{
xbt_fifo_remove(rdv->comm_fifo, comm);
comm->rdv = NULL;
}
-
+
/**
* \brief Checks if there is a communication request queued in a rendez-vous matching our needs
* \param type The type of communication we are looking for (comm_send, comm_recv)
*/
smx_comm_t SIMIX_rdv_get_request(smx_rdv_t rdv, smx_comm_type_t type)
{
- smx_comm_t comm = (smx_comm_t)xbt_fifo_get_item_content(
- xbt_fifo_get_first_item(rdv->comm_fifo));
+ smx_comm_t comm = (smx_comm_t)
+ xbt_fifo_get_item_content(xbt_fifo_get_first_item(rdv->comm_fifo));
- if(comm && comm->type == type){
+ if (comm && comm->type == type) {
DEBUG0("Communication request found!");
xbt_fifo_shift(rdv->comm_fifo);
SIMIX_communication_use(comm);
+ comm->rdv = NULL;
return comm;
}
- /* no relevant request found. Return NULL */
DEBUG0("Communication request not found");
return NULL;
}
* \param host The host to be counted
* \return The number of comm request pending in the rdv
*/
-int
-SIMIX_rdv_get_count_waiting_comm(smx_rdv_t rdv, smx_host_t host)
+int SIMIX_rdv_get_count_waiting_comm(smx_rdv_t rdv, smx_host_t host)
{
smx_comm_t comm = NULL;
xbt_fifo_item_t item = NULL;
* \param rdv The rendez-vous point
* \return The communication or NULL if empty
*/
-smx_comm_t SIMIX_rdv_get_head(smx_rdv_t rdv)
+XBT_INLINE smx_comm_t SIMIX_rdv_get_head(smx_rdv_t rdv)
+{
+ return (smx_comm_t)
+ xbt_fifo_get_item_content(xbt_fifo_get_first_item(rdv->comm_fifo));
+}
+
+/** @brief adds some API-related data to the rendez-vous point */
+XBT_INLINE void SIMIX_rdv_set_data(smx_rdv_t rdv, void *data)
{
- return (smx_comm_t)xbt_fifo_get_item_content(xbt_fifo_get_first_item(rdv->comm_fifo));
+ rdv->data = data;
}
+/** @brief gets API-related data from the rendez-vous point */
+XBT_INLINE void *SIMIX_rdv_get_data(smx_rdv_t rdv)
+{
+ return rdv->data;
+}
/******************************************************************************/
/* Communication Requests */
-/******************************************************************************/
+/******************************************************************************/
/**
* \brief Creates a new communication request
* \param type The type of communication (comm_send, comm_recv)
* \return The new communication request
- */
+ */
smx_comm_t SIMIX_communication_new(smx_comm_type_t type)
{
/* alloc structures */
smx_comm_t comm = xbt_new0(s_smx_comm_t, 1);
comm->type = type;
- comm->cond = SIMIX_cond_init();
+ comm->sem = SIMIX_sem_init(0);
comm->refcount = 1;
-
+
return comm;
}
*/
void SIMIX_communication_destroy(smx_comm_t comm)
{
+ VERB2("Destroy communication %p; refcount initially %d", comm,
+ comm->refcount);
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+ //save is latency limited flag to use afterwards
+ if (latency_limited_dict == NULL) {
+ latency_limited_dict = xbt_dict_new();
+ }
+ if (comm->act) {
+ DEBUG2("adding key %p with latency limited value %d to the dict", comm,
+ SIMIX_action_is_latency_bounded(comm->act));
+ xbt_dicti_set(latency_limited_dict, (uintptr_t) comm,
+ SIMIX_action_is_latency_bounded(comm->act));
+ }
+#endif
+
comm->refcount--;
- if(comm->refcount == 0){
- if(comm->act != NULL)
- SIMIX_action_destroy(comm->act);
+ if (comm->refcount > 0)
+ return;
+
+ if (comm->sem) {
+ SIMIX_sem_destroy(comm->sem);
+ comm->sem = NULL;
+ }
+
+ if (comm->act) {
+ SIMIX_action_destroy(comm->act);
+ comm->act = NULL;
+ }
+
+ if (comm->src_timeout) {
+ SIMIX_action_destroy(comm->src_timeout);
+ comm->src_timeout = NULL;
+ }
- xbt_free(comm->cond);
- xbt_free(comm);
+ if (comm->dst_timeout) {
+ SIMIX_action_destroy(comm->dst_timeout);
+ comm->dst_timeout = NULL;
}
+
+
+
+ xbt_free(comm);
}
/**
* maybe is in use by others.
* \
*/
-static inline void SIMIX_communication_use(smx_comm_t comm)
+static XBT_INLINE void SIMIX_communication_use(smx_comm_t comm)
{
comm->refcount++;
}
* \brief Start the simulation of a communication request
* \param comm The communication request
*/
-static inline void SIMIX_communication_start(smx_comm_t comm)
+static XBT_INLINE void SIMIX_communication_start(smx_comm_t comm)
{
/* If both the sender and the receiver are already there, start the communication */
- if(comm->src_proc && comm->dst_proc){
+ if (comm->src_proc && comm->dst_proc) {
DEBUG1("Starting communication %p", comm);
- comm->act = SIMIX_action_communicate(comm->src_proc->smx_host,
- comm->dst_proc->smx_host, NULL,
+ comm->act = SIMIX_action_communicate(comm->src_proc->smx_host,
+ comm->dst_proc->smx_host, NULL,
comm->task_size, comm->rate);
+#ifdef HAVE_TRACING
+ TRACE_smx_action_communicate(comm->act, comm->src_proc);
+ TRACE_surf_action(comm->act->surf_action, comm->act->category);
+#endif
/* If any of the process is suspend, create the action but stop its execution,
- it will be restart when the sender process resume */
- if(SIMIX_process_is_suspended(comm->src_proc) ||
- SIMIX_process_is_suspended(comm->dst_proc)) {
- SIMIX_action_set_priority(comm->act, 0);
+ it will be restarted when the sender process resume */
+ if (SIMIX_process_is_suspended(comm->src_proc) ||
+ SIMIX_process_is_suspended(comm->dst_proc)) {
+ SIMIX_action_suspend(comm->act);
}
-
+
/* Add the communication as user data of the action */
comm->act->data = comm;
-
- SIMIX_register_action_to_condition(comm->act, comm->cond);
+
+ /* The semaphore will only get signaled once, but since the first unlocked guy will
+ * release_forever() the semaphore, that will unlock the second (and any other)
+ * communication partner */
+ SIMIX_register_action_to_semaphore(comm->act, comm->sem);
}
}
/**
- * \brief Waits for communication completion and performs error checking
+ * \brief Performs error checking and cleanup
+ * \param comm The communication
+ */
+static XBT_INLINE void SIMIX_communication_cleanup(smx_comm_t comm)
+{
+ DEBUG1("Checking errors and cleaning communication %p", comm);
+
+ /* Make sure that everyone sleeping on that semaphore is awake, and that nobody will ever block on it */
+ SIMIX_sem_release_forever(comm->sem);
+
+ /* Check for errors other than timeouts */
+ if (!SIMIX_host_get_state(SIMIX_host_self())) {
+ if (comm->rdv)
+ SIMIX_rdv_remove(comm->rdv, comm);
+ SIMIX_communication_destroy(comm);
+ THROW0(host_error, 0, "Host failed");
+ } else if (SIMIX_action_get_state(comm->act) == SURF_ACTION_FAILED) {
+ SIMIX_communication_destroy(comm);
+ THROW0(network_error, 0, "Link failure");
+ } else if (!SIMIX_host_get_state(SIMIX_process_get_host(comm->dst_proc))
+ ||
+ !SIMIX_host_get_state(SIMIX_process_get_host(comm->src_proc)))
+ {
+ /* We test both src&dst because we dunno who we are today, and we already tested myself above.
+ * So, at the end, we test the remote peer only
+ * Moreover, we have to test it because if the remote peer fails, the action comm->act is not done nor failed.
+ * In that case, we got awaken by the little endless actions created in the SIMIX_sem_acquire(comm->sem)
+ * at the beginning of this function. */
+ SIMIX_communication_destroy(comm);
+ THROW0(network_error, 0, "Remote peer failed");
+
+ }
+ /* Copy network data */
+ SIMIX_network_copy_data(comm);
+
+ SIMIX_communication_destroy(comm);
+}
+
+/**
+ * \brief Waits for communication completion
* \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
+ * - host_error if local peer failed
+ * - timeout_error if communication reached the timeout specified (either because of local peer or remote peer)
+ * - network_error if network failed or remote peer failed
*/
-static inline void SIMIX_communication_wait_for_completion(smx_comm_t comm, double timeout)
+static XBT_INLINE void SIMIX_communication_wait_for_completion(smx_comm_t
+ comm,
+ double
+ timeout)
{
- xbt_ex_t e;
+ smx_action_t act_sleep = NULL;
+ int src_timeout = 0;
+ int dst_timeout = 0;
DEBUG1("Waiting for the completion of communication %p", comm);
-
- if(timeout > 0){
- TRY{
- SIMIX_cond_wait_timeout(comm->cond, NULL, timeout);
- }
- CATCH(e){
- /* If there is a timeout then cancel the communication if it is running or
- remove it from the rendez-vous otherwise. Then signal the other peer,
- destroy the communication and retrow the exception. */
- if(e.category == timeout_error){
- DEBUG1("Communication timeout! %p", comm);
- if(comm->act && SIMIX_action_get_state(comm->act) == SURF_ACTION_RUNNING)
- SIMIX_communication_cancel(comm);
- else
- SIMIX_rdv_remove(comm->rdv, comm);
-
- SIMIX_cond_signal(comm->cond);
- SIMIX_communication_destroy(comm);
- }
- RETHROW;
- }
- }else{
- SIMIX_cond_wait(comm->cond, NULL);
+
+ if (timeout >= 0) {
+ act_sleep = SIMIX_action_sleep(SIMIX_host_self(), timeout);
+ if (SIMIX_process_self() == comm->src_proc)
+ comm->src_timeout = act_sleep;
+ else
+ comm->dst_timeout = act_sleep;
+ SIMIX_action_set_name(act_sleep,
+ bprintf
+ ("Timeout for comm %p and wait on semaphore %p (max_duration:%f)",
+ comm, comm->sem, timeout));
+ SIMIX_register_action_to_semaphore(act_sleep, comm->sem);
+ SIMIX_process_self()->waiting_action = act_sleep;
+ SIMIX_sem_block_onto(comm->sem);
+ SIMIX_process_self()->waiting_action = NULL;
+ SIMIX_unregister_action_to_semaphore(act_sleep, comm->sem);
+ } else {
+ SIMIX_sem_acquire(comm->sem);
}
- DEBUG1("Communication %p complete! Let's check for errors", comm);
-
- /* Check for errors other than timeouts (they are catched above) */
- if(!SIMIX_host_get_state(SIMIX_host_self())){
+ /* Check for timeouts */
+ if ((src_timeout = ((comm->src_timeout)
+ && (SIMIX_action_get_state(comm->src_timeout) ==
+ SURF_ACTION_DONE)))
+ || (dst_timeout = ((comm->dst_timeout)
+ && (SIMIX_action_get_state(comm->dst_timeout) ==
+ SURF_ACTION_DONE)))) {
+ /* Somebody did a timeout! */
+ if (src_timeout)
+ DEBUG1("Communication timeout from the src! %p", comm);
+ if (dst_timeout)
+ DEBUG1("Communication timeout from the dst! %p", comm);
+
+ if (comm->act
+ && SIMIX_action_get_state(comm->act) == SURF_ACTION_RUNNING)
+ SIMIX_communication_cancel(comm);
+ else if (comm->rdv)
+ SIMIX_rdv_remove(comm->rdv, comm);
+
+ /* Make sure that everyone sleeping on that semaphore is awake, and that nobody will ever block on it */
+ SIMIX_sem_release_forever(comm->sem);
SIMIX_communication_destroy(comm);
- THROW0(host_error, 0, "Host failed");
- } else if (SIMIX_action_get_state(comm->act) == SURF_ACTION_FAILED){
- SIMIX_communication_destroy(comm);
- THROW0(network_error, 0, "Link failure");
+
+ THROW1(timeout_error, 0, "Communication timeouted because of %s",
+ src_timeout ? "the source" : "the destination");
}
- SIMIX_unregister_action_to_condition(comm->act, comm->cond);
+ DEBUG1("Communication %p complete!", comm);
+ SIMIX_communication_cleanup(comm);
}
/**
* \brief Cancels a communication
* \brief comm The communication to cancel
*/
-void SIMIX_communication_cancel(smx_comm_t comm)
+XBT_INLINE void SIMIX_communication_cancel(smx_comm_t comm)
{
- SIMIX_action_cancel(comm->act);
+ if (comm->act)
+ SIMIX_action_cancel(comm->act);
}
/**
* \brief get the amount remaining from the communication
* \param comm The communication
*/
-double SIMIX_communication_get_remains(smx_comm_t comm)
+XBT_INLINE double SIMIX_communication_get_remains(smx_comm_t comm)
{
+ DEBUG1("calling SIMIX_action_get_remains(%p)", comm->act);
return SIMIX_action_get_remains(comm->act);
-}
+}
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+/**
+ * \brief verify if communication is latency bounded
+ * \param comm The communication
+ */
+XBT_INLINE int SIMIX_communication_is_latency_bounded(smx_comm_t comm)
+{
+ //try to find comm on the list of finished flows
+ uintptr_t key = 0;
+ uintptr_t data = 0;
+ xbt_dict_cursor_t cursor;
+ xbt_dict_foreach(latency_limited_dict, cursor, key, data) {
+ DEBUG2("comparing key=%p with comm=%p", (void *) key, (void *) comm);
+ if ((void *) comm == (void *) key) {
+ DEBUG2("key %p found, return value latency limited value %d",
+ (void *) key, (int) data);
+ return (int) data;
+ }
+ }
+
+ DEBUG1("calling SIMIX_action_is_latency_bounded(%p)", comm->act);
+ return SIMIX_action_is_latency_bounded(comm->act);
+}
+#endif
+
+/******************************************************************************/
+/* SIMIX_network_copy_data callbacks */
+/******************************************************************************/
+static void (*SIMIX_network_copy_data_callback) (smx_comm_t, size_t) =
+ &SIMIX_network_copy_pointer_callback;
+
+void
+SIMIX_network_set_copy_data_callback(void (*callback) (smx_comm_t, size_t))
+{
+ SIMIX_network_copy_data_callback = callback;
+}
+
+void SIMIX_network_copy_pointer_callback(smx_comm_t comm, size_t buff_size)
+{
+ xbt_assert1((buff_size == sizeof(void *)),
+ "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
+ *(void **) (comm->dst_buff) = comm->src_buff;
+}
+
+void SIMIX_network_copy_buffer_callback(smx_comm_t comm, size_t buff_size)
+{
+ memcpy(comm->dst_buff, comm->src_buff, buff_size);
+}
/**
* \brief Copy the communication data from the sender's buffer to the receiver's one
*/
void SIMIX_network_copy_data(smx_comm_t comm)
{
+ size_t buff_size = comm->src_buff_size;
+ uintptr_t casted_size = 0;
+ uintptr_t amount = 0;
/* If there is no data to be copy then return */
- if(!comm->src_buff || !comm->dst_buff)
+ if (!comm->src_buff || !comm->dst_buff || comm->copied == 1)
return;
-
- size_t src_buff_size = comm->src_buff_size;
- size_t dst_buff_size = *comm->dst_buff_size;
-
+
+ DEBUG6("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)",
+ comm,
+ comm->src_proc->smx_host->name, comm->src_buff,
+ comm->dst_proc->smx_host->name, comm->dst_buff, buff_size);
+
/* Copy at most dst_buff_size bytes of the message to receiver's buffer */
- dst_buff_size = MIN(dst_buff_size, src_buff_size);
-
+ if (comm->dst_buff_size)
+ buff_size = MIN(buff_size, *(comm->dst_buff_size));
+
/* Update the receiver's buffer size to the copied amount */
- *comm->dst_buff_size = dst_buff_size;
+ if (comm->dst_buff_size)
+ *comm->dst_buff_size = buff_size;
- if(dst_buff_size == 0)
+ if (buff_size == 0)
return;
+ (*SIMIX_network_copy_data_callback) (comm, buff_size);
- memcpy(comm->dst_buff, comm->src_buff, dst_buff_size);
+ /* Set the copied flag so we copy data only once */
+ /* (this function might be called from both communication ends) */
+ comm->copied = 1;
- DEBUG4("Copying comm %p data from %s -> %s (%zu bytes)",
- comm, comm->src_proc->smx_host->name, comm->dst_proc->smx_host->name,
- dst_buff_size);
+ /* pimple to display the message sizes */
+ {
+ if (msg_sizes == NULL)
+ msg_sizes = xbt_dict_new();
+ casted_size = comm->task_size;
+ amount = xbt_dicti_get(msg_sizes, casted_size);
+ amount++;
+
+ xbt_dicti_set(msg_sizes, casted_size, amount);
+ }
+}
+
+#include "xbt.h"
+/* pimple to display the message sizes */
+void SIMIX_message_sizes_output(const char *filename)
+{
+ uintptr_t key = 0;
+ uintptr_t data = 0;
+ xbt_dict_cursor_t cursor;
+ FILE *out = NULL;
+ out = fopen(filename, "w");
+ xbt_assert1(out, "Cannot open file %s", filename);
+
+ xbt_dict_foreach(msg_sizes, cursor, key, data) {
+ fprintf(out, "%zu %zu\n", key, data);
+ }
+ fclose(out);
}
/**
* \param comm The communication
* \return the user data
*/
-void *SIMIX_communication_get_data(smx_comm_t comm)
+XBT_INLINE void *SIMIX_communication_get_data(smx_comm_t comm)
{
return comm->data;
}
+XBT_PUBLIC(void *) SIMIX_communication_get_src_buf(smx_comm_t comm)
+{
+ return comm->src_buff;
+}
+
+XBT_PUBLIC(void *) SIMIX_communication_get_dst_buf(smx_comm_t comm)
+{
+ return comm->dst_buff;
+}
+
+XBT_PUBLIC(size_t) SIMIX_communication_get_src_buf_size(smx_comm_t comm)
+{
+ return comm->src_buff_size;
+}
+
+XBT_PUBLIC(size_t) SIMIX_communication_get_dst_buf_size(smx_comm_t comm)
+{
+ return *(comm->dst_buff_size);
+}
+
/******************************************************************************/
/* Synchronous Communication */
/******************************************************************************/
* \param timeout The timeout used for the waiting the completion
* \param src_buff The source buffer containing the message to be sent
* \param src_buff_size The size of the source buffer
- * \param comm_ref The communication object used for the send
+ * \param comm_ref The communication object used for the send (useful if someone else wants to cancel this communication afterward)
* \param data User data associated to the communication object
* 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 *src_buff, size_t src_buff_size,
- smx_comm_t *comm_ref, void *data)
+XBT_INLINE void SIMIX_network_send(smx_rdv_t rdv, double task_size,
+ double rate, double timeout,
+ void *src_buff, size_t src_buff_size,
+ smx_comm_t * comm_ref, void *data)
+{
+ *comm_ref =
+ SIMIX_network_isend(rdv, task_size, rate, src_buff, src_buff_size,
+ data);
+ SIMIX_network_wait(*comm_ref, timeout);
+}
+
+/**
+ * \brief Put a receive communication request in a rendez-vous point and waits
+ * for its completion (blocking)
+ * \param rdv The rendez-vous point
+ * \param timeout The timeout used for the waiting the completion
+ * \param dst_buff The destination buffer to copy the received message
+ * \param src_buff_size The size of the destination buffer
+ * \param comm_ref The communication object used for the send (useful if someone else wants to cancel this communication afterward)
+ * Throws:
+ * - host_error if peer failed
+ * - timeout_error if communication reached the timeout specified
+ * - network_error if network failed or peer issued a timeout
+ */
+XBT_INLINE void SIMIX_network_recv(smx_rdv_t rdv, double timeout,
+ void *dst_buff, size_t * dst_buff_size,
+ smx_comm_t * comm_ref)
+{
+ *comm_ref =
+ (smx_comm_t) SIMIX_network_irecv(rdv, dst_buff, dst_buff_size);
+ SIMIX_network_wait(*comm_ref, timeout);
+}
+
+/******************************************************************************/
+/* Asynchronous Communication */
+/******************************************************************************/
+smx_comm_t SIMIX_network_isend(smx_rdv_t rdv, double task_size,
+ double rate, void *src_buff,
+ size_t src_buff_size, void *data)
{
smx_comm_t comm;
-
- /* Look for communication request matching our needs.
+
+ /*If running in model-checking mode then intercept the communication action */
+#ifdef HAVE_MC
+ if (_surf_do_model_check)
+ MC_trans_intercept_isend(rdv);
+#endif
+ /* Look for communication request matching our needs.
If it is not found then create it and push it into the rendez-vous point */
comm = SIMIX_rdv_get_request(rdv, comm_recv);
- if(!comm){
+ if (!comm) {
comm = SIMIX_communication_new(comm_send);
SIMIX_rdv_push(rdv, comm);
}
- /* Update the communication reference with the comm to be used */
- *comm_ref = comm;
-
/* Setup the communication request */
comm->src_proc = SIMIX_process_self();
comm->task_size = task_size;
comm->data = data;
SIMIX_communication_start(comm);
-
- /* Wait for communication completion */
- SIMIX_communication_wait_for_completion(comm, timeout);
-
- SIMIX_communication_destroy(comm);
+ return comm;
}
-/**
- * \brief Put a receive communication request in a rendez-vous point and waits
- * for its completion (blocking)
- * \param rdv The rendez-vous point
- * \param timeout The timeout used for the waiting the completion
- * \param dst_buff The destination buffer to copy the received message
- * \param src_buff_size The size of the destination buffer
- * \param comm_ref The communication object used for the send
- * 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 *dst_buff,
- size_t *dst_buff_size, smx_comm_t *comm_ref)
+smx_comm_t SIMIX_network_irecv(smx_rdv_t rdv, void *dst_buff,
+ size_t * dst_buff_size)
{
smx_comm_t comm;
- /* Look for communication request matching our needs.
- If it is not found then create it and push it into the rendez-vous point */
+ /*If running in model-checking mode then intercept the communication action */
+#ifdef HAVE_MC
+ if (_surf_do_model_check)
+ MC_trans_intercept_irecv(rdv);
+#endif
+ /* Look for communication request matching our needs.
+ * If it is not found then create it and push it into the rendez-vous point
+ */
comm = SIMIX_rdv_get_request(rdv, comm_send);
- if(!comm){
+ if (!comm) {
comm = SIMIX_communication_new(comm_recv);
SIMIX_rdv_push(rdv, comm);
}
- /* Update the communication reference with the comm to be used */
- *comm_ref = comm;
-
/* Setup communication request */
comm->dst_proc = SIMIX_process_self();
comm->dst_buff = dst_buff;
comm->dst_buff_size = dst_buff_size;
SIMIX_communication_start(comm);
+ return comm;
+}
+/** @brief blocks until the communication terminates or the timeout occurs */
+XBT_INLINE void SIMIX_network_wait(smx_comm_t comm, double timeout)
+{
+ /*If running in model-checking mode then intercept the communication action */
+#ifdef HAVE_MC
+ if (_surf_do_model_check)
+ MC_trans_intercept_wait(comm);
+#endif
/* Wait for communication completion */
SIMIX_communication_wait_for_completion(comm, timeout);
-
- SIMIX_communication_destroy(comm);
}
-/******************************************************************************/
-/* Asynchronous Communication */
-/******************************************************************************/
-
-/*
-void SIMIX_network_wait(smx_action_t comm, double timeout)
+/** @Returns whether the (asynchronous) communication is done yet or not */
+XBT_INLINE int SIMIX_network_test(smx_comm_t comm)
{
- TO BE IMPLEMENTED
+ /*If running in model-checking mode then intercept the communication action */
+#ifdef HAVE_MC
+ if (_surf_do_model_check)
+ MC_trans_intercept_test(comm);
+#endif
+
+ /* Copy data if the communication is done */
+ if (comm->sem && !SIMIX_sem_would_block(comm->sem)) {
+ /* Copy network data */
+ SIMIX_network_copy_data(comm);
+ return TRUE;
+ }
+ return FALSE;
}
-XBT_PUBLIC(int) SIMIX_network_test(smx_action_t comm)
+/** @brief wait for the completion of any communication of a set
+ *
+ * @Returns the rank in the dynar of communication which finished; destroy it after identifying which one it is
+ */
+unsigned int SIMIX_network_waitany(xbt_dynar_t comms)
{
- TO BE IMPLEMENTED
-}*/
-
-
-
-
-
-
-
+ xbt_dynar_t sems = xbt_dynar_new(sizeof(smx_sem_t), NULL);
+ unsigned int cursor, found_comm = -1;
+ smx_comm_t comm, comm_finished = NULL;
+
+ /*If running in model-checking mode then intercept the communication action */
+#ifdef HAVE_MC
+ if (_surf_do_model_check)
+ MC_trans_intercept_waitany(comms);
+#endif
+ xbt_dynar_foreach(comms, cursor, comm)
+ xbt_dynar_push(sems, &(comm->sem));
+
+ DEBUG1("Waiting for the completion of communication set %p", comms);
+
+ found_comm = SIMIX_sem_acquire_any(sems);
+ xbt_dynar_free_container(&sems);
+ xbt_assert0(found_comm != -1,
+ "Cannot find which communication finished");
+ xbt_dynar_get_cpy(comms, found_comm, &comm_finished);
+
+ DEBUG2("Communication %p of communication set %p finished",
+ comm_finished, comms);
+
+ /* let the regular code deal with the communication end (errors checking and cleanup).
+ * A bit of useless work will be done, but that's good for source factorization */
+ SIMIX_sem_release_forever(comm_finished->sem);
+ SIMIX_communication_wait_for_completion(comm_finished, -1);
+ return found_comm;
+}