#include "src/kernel/activity/CommImpl.hpp"
#include "simgrid/kernel/resource/Action.hpp"
#include "simgrid/modelchecker.h"
+#include "simgrid/s4u/Host.hpp"
#include "src/kernel/activity/MailboxImpl.hpp"
#include "src/mc/mc_replay.hpp"
#include "src/simix/smx_network_private.hpp"
+#include "src/surf/network_interface.hpp"
#include "src/surf/surf_interface.hpp"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_network);
+
+/******************************************************************************/
+/* SIMIX_comm_copy_data callbacks */
+/******************************************************************************/
+static void (*SIMIX_comm_copy_data_callback)(smx_activity_t, void*, size_t) = &SIMIX_comm_copy_pointer_callback;
+
+void SIMIX_comm_set_copy_data_callback(void (*callback)(smx_activity_t, void*, size_t))
+{
+ SIMIX_comm_copy_data_callback = callback;
+}
+
+void SIMIX_comm_copy_pointer_callback(smx_activity_t synchro, void* buff, size_t buff_size)
+{
+ simgrid::kernel::activity::CommImplPtr comm =
+ boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
+
+ xbt_assert((buff_size == sizeof(void*)), "Cannot copy %zu bytes: must be sizeof(void*)", buff_size);
+ *(void**)(comm->dst_buff_) = buff;
+}
+
namespace simgrid {
namespace kernel {
namespace activity {
mbox->remove(this);
}
+/** @brief Starts the simulation of a communication synchro. */
+void CommImpl::start()
+{
+ /* If both the sender and the receiver are already there, start the communication */
+ if (state_ == SIMIX_READY) {
+
+ s4u::Host* sender = src_actor_->host_;
+ s4u::Host* receiver = dst_actor_->host_;
+
+ surf_action_ = surf_network_model->communicate(sender, receiver, task_size_, rate_);
+ surf_action_->set_data(this);
+ state_ = SIMIX_RUNNING;
+
+ XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", this, sender->get_cname(),
+ receiver->get_cname(), surf_action_);
+
+ /* If a link is failed, detect it immediately */
+ if (surf_action_->get_state() == resource::Action::State::FAILED) {
+ XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", sender->get_cname(),
+ receiver->get_cname());
+ state_ = SIMIX_LINK_FAILURE;
+ cleanupSurf();
+ }
+
+ /* If any of the process is suspended, create the synchro but stop its execution,
+ it will be restarted when the sender process resume */
+ if (src_actor_->is_suspended() || dst_actor_->is_suspended()) {
+ if (src_actor_->is_suspended())
+ XBT_DEBUG("The communication is suspended on startup because src (%s@%s) was suspended since it initiated the "
+ "communication",
+ src_actor_->get_cname(), src_actor_->host_->get_cname());
+ else
+ XBT_DEBUG("The communication is suspended on startup because dst (%s@%s) was suspended since it initiated the "
+ "communication",
+ dst_actor_->get_cname(), dst_actor_->host_->get_cname());
+
+ surf_action_->suspend();
+ }
+ }
+}
+
+/** @brief Copy the communication data from the sender's buffer to the receiver's one */
+void CommImpl::copy_data()
+{
+ size_t buff_size = src_buff_size_;
+ /* If there is no data to copy then return */
+ if (not src_buff_ || not dst_buff_ || copied)
+ return;
+
+ XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", this,
+ src_actor_ ? src_actor_->host_->get_cname() : "a finished process", src_buff_,
+ dst_actor_ ? dst_actor_->host_->get_cname() : "a finished process", dst_buff_, buff_size);
+
+ /* Copy at most dst_buff_size bytes of the message to receiver's buffer */
+ if (dst_buff_size_)
+ buff_size = std::min(buff_size, *(dst_buff_size_));
+
+ /* Update the receiver's buffer size to the copied amount */
+ if (dst_buff_size_)
+ *dst_buff_size_ = buff_size;
+
+ if (buff_size > 0) {
+ if (copy_data_fun)
+ copy_data_fun(this, src_buff_, buff_size);
+ else
+ SIMIX_comm_copy_data_callback(this, src_buff_, buff_size);
+ }
+
+ /* Set the copied flag so we copy data only once */
+ /* (this function might be called from both communication ends) */
+ copied = true;
+}
+
void CommImpl::suspend()
{
/* FIXME: shall we suspend also the timeout synchro? */
if (surf_action_)
surf_action_->suspend();
- /* if not created yet, the action will be suspended on creation, in SIMIX_comm_start() */
+ /* if not created yet, the action will be suspended on creation, in CommImpl::start() */
}
void CommImpl::resume()
/*FIXME: check what happen with the timeouts */
if (surf_action_)
surf_action_->resume();
- /* in the other case, the synchro were not really suspended yet, see SIMIX_comm_suspend() and SIMIX_comm_start() */
+ /* in the other case, the synchro were not really suspended yet, see CommImpl::suspend() and CommImpl::start() */
}
void CommImpl::cancel()
state_ = SIMIX_CANCELED;
} else if (not MC_is_active() /* when running the MC there are no surf actions */
&& not MC_record_replay_is_active() && (state_ == SIMIX_READY || state_ == SIMIX_RUNNING)) {
-
surf_action_->cancel();
}
}
