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Make mailbox matching functions return a bool.
[simgrid.git] / src / kernel / activity / CommImpl.cpp
index 36bfd5e..63aeb02 100644 (file)
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_network, simix, "SIMIX network-related synchronization");
 
 XBT_PRIVATE void simcall_HANDLER_comm_send(smx_simcall_t simcall, smx_actor_t src, smx_mailbox_t mbox, double task_size,
-                                           double rate, void* src_buff, size_t src_buff_size,
-                                           int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+                                           double rate, unsigned char* src_buff, size_t src_buff_size,
+                                           bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
                                            void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
                                            void* data, double timeout)
 {
   smx_activity_t comm = simcall_HANDLER_comm_isend(simcall, src, mbox, task_size, rate, src_buff, src_buff_size,
                                                    match_fun, nullptr, copy_data_fun, data, 0);
-  SIMCALL_SET_MC_VALUE(simcall, 0);
+  SIMCALL_SET_MC_VALUE(*simcall, 0);
   simcall_HANDLER_comm_wait(simcall, static_cast<simgrid::kernel::activity::CommImpl*>(comm.get()), timeout);
 }
 
 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(
-    smx_simcall_t /*simcall*/, smx_actor_t src_proc, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
-    size_t src_buff_size, int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+    smx_simcall_t /*simcall*/, smx_actor_t src_proc, smx_mailbox_t mbox, double task_size, double rate,
+    unsigned char* src_buff, size_t src_buff_size,
+    bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
     void (*clean_fun)(void*), // used to free the synchro in case of problem after a detached send
     void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), // used to copy data if not default one
-    void* data, int detached)
+    void* data, bool detached)
 {
   XBT_DEBUG("send from mailbox %p", mbox);
 
   /* Prepare a synchro describing us, so that it gets passed to the user-provided filter of other side */
-  simgrid::kernel::activity::CommImplPtr this_comm = simgrid::kernel::activity::CommImplPtr(
-      new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::SEND));
+  simgrid::kernel::activity::CommImplPtr this_comm =
+      simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl());
+  this_comm->set_type(simgrid::kernel::activity::CommImpl::Type::SEND);
 
   /* Look for communication synchro matching our needs. We also provide a description of
    * ourself so that the other side also gets a chance of choosing if it wants to match with us.
@@ -56,7 +58,7 @@ XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(
 
     if (mbox->permanent_receiver_ != nullptr) {
       // this mailbox is for small messages, which have to be sent right now
-      other_comm->state_     = SIMIX_READY;
+      other_comm->state_     = simgrid::kernel::activity::State::READY;
       other_comm->dst_actor_ = mbox->permanent_receiver_.get();
       mbox->done_comm_queue_.push_back(other_comm);
       XBT_DEBUG("pushing a message into the permanent receive list %p, comm %p", mbox, other_comm.get());
@@ -67,64 +69,59 @@ XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_isend(
   } else {
     XBT_DEBUG("Receive already pushed");
 
-    other_comm->state_ = SIMIX_READY;
-    other_comm->type   = simgrid::kernel::activity::CommImpl::Type::READY;
+    other_comm->state_ = simgrid::kernel::activity::State::READY;
+    other_comm->set_type(simgrid::kernel::activity::CommImpl::Type::READY);
   }
-  src_proc->comms.push_back(other_comm);
 
   if (detached) {
-    other_comm->detached  = true;
+    other_comm->detach();
     other_comm->clean_fun = clean_fun;
   } else {
     other_comm->clean_fun = nullptr;
+    src_proc->comms.push_back(other_comm);
   }
 
   /* Setup the communication synchro */
   other_comm->src_actor_     = src_proc;
-  other_comm->task_size_     = task_size;
-  other_comm->rate_          = rate;
-  other_comm->src_buff_      = src_buff;
-  other_comm->src_buff_size_ = src_buff_size;
   other_comm->src_data_      = data;
+  (*other_comm).set_src_buff(src_buff, src_buff_size).set_size(task_size).set_rate(rate);
 
   other_comm->match_fun     = match_fun;
   other_comm->copy_data_fun = copy_data_fun;
 
-  if (MC_is_active() || MC_record_replay_is_active()) {
-    other_comm->state_ = SIMIX_RUNNING;
-    return (detached ? nullptr : other_comm);
-  }
-
-  other_comm->start();
+  if (MC_is_active() || MC_record_replay_is_active())
+    other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
+  else
+    other_comm->start();
 
   return (detached ? nullptr : other_comm);
 }
 
 XBT_PRIVATE void simcall_HANDLER_comm_recv(smx_simcall_t simcall, smx_actor_t receiver, smx_mailbox_t mbox,
-                                           void* dst_buff, size_t* dst_buff_size,
-                                           int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+                                           unsigned char* dst_buff, size_t* dst_buff_size,
+                                           bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
                                            void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
                                            void* data, double timeout, double rate)
 {
   smx_activity_t comm = simcall_HANDLER_comm_irecv(simcall, receiver, mbox, dst_buff, dst_buff_size, match_fun,
                                                    copy_data_fun, data, rate);
-  SIMCALL_SET_MC_VALUE(simcall, 0);
+  SIMCALL_SET_MC_VALUE(*simcall, 0);
   simcall_HANDLER_comm_wait(simcall, static_cast<simgrid::kernel::activity::CommImpl*>(comm.get()), timeout);
 }
 
 XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(
-    smx_simcall_t /*simcall*/, smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
-    simix_match_func_t match_fun, void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t),
-    void* data, double rate)
+    smx_simcall_t /*simcall*/, smx_actor_t receiver, smx_mailbox_t mbox, unsigned char* dst_buff, size_t* dst_buff_size,
+    bool (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
+    void (*copy_data_fun)(simgrid::kernel::activity::CommImpl*, void*, size_t), void* data, double rate)
 {
-  simgrid::kernel::activity::CommImplPtr this_synchro = simgrid::kernel::activity::CommImplPtr(
-      new simgrid::kernel::activity::CommImpl(simgrid::kernel::activity::CommImpl::Type::RECEIVE));
+  simgrid::kernel::activity::CommImplPtr this_synchro =
+      simgrid::kernel::activity::CommImplPtr(new simgrid::kernel::activity::CommImpl());
+  this_synchro->set_type(simgrid::kernel::activity::CommImpl::Type::RECEIVE);
   XBT_DEBUG("recv from mbox %p. this_synchro=%p", mbox, this_synchro.get());
 
   simgrid::kernel::activity::CommImplPtr other_comm;
   // communication already done, get it inside the list of completed comms
   if (mbox->permanent_receiver_ != nullptr && not mbox->done_comm_queue_.empty()) {
-
     XBT_DEBUG("We have a comm that has probably already been received, trying to match it, to skip the communication");
     // find a match in the list of already received comms
     other_comm = mbox->find_matching_comm(simgrid::kernel::activity::CommImpl::Type::SEND, match_fun, data,
@@ -137,11 +134,10 @@ XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(
       other_comm = std::move(this_synchro);
       mbox->push(other_comm);
     } else {
-      if (other_comm->surf_action_ && other_comm->remains() < 1e-12) {
+      if (other_comm->surf_action_ && other_comm->get_remaining() < 1e-12) {
         XBT_DEBUG("comm %p has been already sent, and is finished, destroy it", other_comm.get());
-        other_comm->state_ = SIMIX_DONE;
-        other_comm->type   = simgrid::kernel::activity::CommImpl::Type::DONE;
-        other_comm->mbox   = nullptr;
+        other_comm->state_ = simgrid::kernel::activity::State::DONE;
+        other_comm->set_type(simgrid::kernel::activity::CommImpl::Type::DONE).set_mailbox(nullptr);
       }
     }
   } else {
@@ -162,26 +158,25 @@ XBT_PRIVATE smx_activity_t simcall_HANDLER_comm_irecv(
     } else {
       XBT_DEBUG("Match my %p with the existing %p", this_synchro.get(), other_comm.get());
 
-      other_comm->state_ = SIMIX_READY;
-      other_comm->type   = simgrid::kernel::activity::CommImpl::Type::READY;
+      other_comm->state_ = simgrid::kernel::activity::State::READY;
+      other_comm->set_type(simgrid::kernel::activity::CommImpl::Type::READY);
     }
     receiver->comms.push_back(other_comm);
   }
 
   /* Setup communication synchro */
   other_comm->dst_actor_     = receiver;
-  other_comm->dst_buff_      = dst_buff;
-  other_comm->dst_buff_size_ = dst_buff_size;
   other_comm->dst_data_      = data;
+  other_comm->set_dst_buff(dst_buff, dst_buff_size);
 
-  if (rate > -1.0 && (other_comm->rate_ < 0.0 || rate < other_comm->rate_))
-    other_comm->rate_ = rate;
+  if (rate > -1.0 && (other_comm->get_rate() < 0.0 || rate < other_comm->get_rate()))
+    other_comm->set_rate(rate);
 
   other_comm->match_fun     = match_fun;
   other_comm->copy_data_fun = copy_data_fun;
 
   if (MC_is_active() || MC_record_replay_is_active()) {
-    other_comm->state_ = SIMIX_RUNNING;
+    other_comm->state_ = simgrid::kernel::activity::State::RUNNING;
     return other_comm;
   }
   other_comm->start();
@@ -193,23 +188,22 @@ void simcall_HANDLER_comm_wait(smx_simcall_t simcall, simgrid::kernel::activity:
   /* Associate this simcall to the wait synchro */
   XBT_DEBUG("simcall_HANDLER_comm_wait, %p", comm);
 
-  comm->simcalls_.push_back(simcall);
-  simcall->issuer->waiting_synchro = comm;
+  comm->register_simcall(simcall);
 
   if (MC_is_active() || MC_record_replay_is_active()) {
-    int idx = SIMCALL_GET_MC_VALUE(simcall);
+    int idx = SIMCALL_GET_MC_VALUE(*simcall);
     if (idx == 0) {
-      comm->state_ = SIMIX_DONE;
+      comm->state_ = simgrid::kernel::activity::State::DONE;
     } else {
       /* If we reached this point, the wait simcall must have a timeout */
       /* Otherwise it shouldn't be enabled and executed by the MC */
       if (timeout < 0.0)
         THROW_IMPOSSIBLE;
 
-      if (comm->src_actor_ == simcall->issuer)
-        comm->state_ = SIMIX_SRC_TIMEOUT;
+      if (comm->src_actor_ == simcall->issuer_)
+        comm->state_ = simgrid::kernel::activity::State::SRC_TIMEOUT;
       else
-        comm->state_ = SIMIX_DST_TIMEOUT;
+        comm->state_ = simgrid::kernel::activity::State::DST_TIMEOUT;
     }
 
     comm->finish();
@@ -218,13 +212,14 @@ void simcall_HANDLER_comm_wait(smx_simcall_t simcall, simgrid::kernel::activity:
 
   /* If the synchro has already finish perform the error handling, */
   /* otherwise set up a waiting timeout on the right side          */
-  if (comm->state_ != SIMIX_WAITING && comm->state_ != SIMIX_RUNNING) {
+  if (comm->state_ != simgrid::kernel::activity::State::WAITING &&
+      comm->state_ != simgrid::kernel::activity::State::RUNNING) {
     comm->finish();
   } else { /* we need a sleep action (even when there is no timeout) to be notified of host failures */
-    simgrid::kernel::resource::Action* sleep = simcall->issuer->get_host()->pimpl_cpu->sleep(timeout);
-    sleep->set_data(comm);
+    simgrid::kernel::resource::Action* sleep = simcall->issuer_->get_host()->pimpl_cpu->sleep(timeout);
+    sleep->set_activity(comm);
 
-    if (simcall->issuer == comm->src_actor_)
+    if (simcall->issuer_ == comm->src_actor_)
       comm->src_timeout_ = sleep;
     else
       comm->dst_timeout_ = sleep;
@@ -233,103 +228,106 @@ void simcall_HANDLER_comm_wait(smx_simcall_t simcall, simgrid::kernel::activity:
 
 void simcall_HANDLER_comm_test(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comm)
 {
-  int res;
+  bool res;
 
   if (MC_is_active() || MC_record_replay_is_active()) {
     res = comm->src_actor_ && comm->dst_actor_;
     if (res)
-      comm->state_ = SIMIX_DONE;
+      comm->state_ = simgrid::kernel::activity::State::DONE;
   } else {
-    res = comm->state_ != SIMIX_WAITING && comm->state_ != SIMIX_RUNNING;
+    res = comm->state_ != simgrid::kernel::activity::State::WAITING &&
+          comm->state_ != simgrid::kernel::activity::State::RUNNING;
   }
 
   simcall_comm_test__set__result(simcall, res);
-  if (simcall_comm_test__get__result(simcall)) {
+  if (res) {
     comm->simcalls_.push_back(simcall);
     comm->finish();
   } else {
-    SIMIX_simcall_answer(simcall);
+    simcall->issuer_->simcall_answer();
   }
 }
 
-void simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::ActivityImplPtr comms[],
-                                  size_t count)
+void simcall_HANDLER_comm_testany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count)
 {
   // The default result is -1 -- this means, "nothing is ready".
   // It can be changed below, but only if something matches.
   simcall_comm_testany__set__result(simcall, -1);
 
   if (MC_is_active() || MC_record_replay_is_active()) {
-    int idx = SIMCALL_GET_MC_VALUE(simcall);
+    int idx = SIMCALL_GET_MC_VALUE(*simcall);
     if (idx == -1) {
-      SIMIX_simcall_answer(simcall);
+      simcall->issuer_->simcall_answer();
     } else {
-      simgrid::kernel::activity::ActivityImplPtr synchro = comms[idx];
+      simgrid::kernel::activity::CommImpl* comm = comms[idx];
       simcall_comm_testany__set__result(simcall, idx);
-      synchro->simcalls_.push_back(simcall);
-      synchro->state_ = SIMIX_DONE;
-      boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro)->finish();
+      comm->simcalls_.push_back(simcall);
+      comm->state_ = simgrid::kernel::activity::State::DONE;
+      comm->finish();
     }
     return;
   }
 
   for (std::size_t i = 0; i != count; ++i) {
-    simgrid::kernel::activity::ActivityImplPtr synchro = comms[i];
-    if (synchro->state_ != SIMIX_WAITING && synchro->state_ != SIMIX_RUNNING) {
+    simgrid::kernel::activity::CommImpl* comm = comms[i];
+    if (comm->state_ != simgrid::kernel::activity::State::WAITING &&
+        comm->state_ != simgrid::kernel::activity::State::RUNNING) {
       simcall_comm_testany__set__result(simcall, i);
-      synchro->simcalls_.push_back(simcall);
-      boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro)->finish();
+      comm->simcalls_.push_back(simcall);
+      comm->finish();
       return;
     }
   }
-  SIMIX_simcall_answer(simcall);
+  simcall->issuer_->simcall_answer();
 }
 
 static void SIMIX_waitany_remove_simcall_from_actions(smx_simcall_t simcall)
 {
-  smx_activity_t* synchros = simcall_comm_waitany__get__comms(simcall);
-  size_t count             = simcall_comm_waitany__get__count(simcall);
+  simgrid::kernel::activity::CommImpl** comms = simcall_comm_waitany__get__comms(simcall);
+  size_t count                                = simcall_comm_waitany__get__count(simcall);
 
   for (size_t i = 0; i < count; i++) {
-    // Remove the first occurence of simcall:
-    smx_activity_t& synchro = synchros[i];
-    auto j                  = boost::range::find(synchro->simcalls_, simcall);
-    if (j != synchro->simcalls_.end())
-      synchro->simcalls_.erase(j);
+    // Remove the first occurrence of simcall:
+    auto* comm = comms[i];
+    auto j     = boost::range::find(comm->simcalls_, simcall);
+    if (j != comm->simcalls_.end())
+      comm->simcalls_.erase(j);
   }
 }
-void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, smx_activity_t* synchros, size_t count, double timeout)
+void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, simgrid::kernel::activity::CommImpl* comms[], size_t count,
+                                  double timeout)
 {
   if (MC_is_active() || MC_record_replay_is_active()) {
     if (timeout > 0.0)
       xbt_die("Timeout not implemented for waitany in the model-checker");
-    int idx                 = SIMCALL_GET_MC_VALUE(simcall);
-    smx_activity_t& synchro = synchros[idx];
-    synchro->simcalls_.push_back(simcall);
+    int idx                 = SIMCALL_GET_MC_VALUE(*simcall);
+    auto* comm              = comms[idx];
+    comm->simcalls_.push_back(simcall);
     simcall_comm_waitany__set__result(simcall, idx);
-    synchro->state_ = SIMIX_DONE;
-    synchro->finish();
+    comm->state_ = simgrid::kernel::activity::State::DONE;
+    comm->finish();
     return;
   }
 
   if (timeout < 0.0) {
-    simcall->timer = NULL;
+    simcall->timeout_cb_ = NULL;
   } else {
-    simcall->timer = simgrid::simix::Timer::set(SIMIX_get_clock() + timeout, [simcall]() {
+    simcall->timeout_cb_ = simgrid::simix::Timer::set(SIMIX_get_clock() + timeout, [simcall]() {
       SIMIX_waitany_remove_simcall_from_actions(simcall);
       simcall_comm_waitany__set__result(simcall, -1);
-      SIMIX_simcall_answer(simcall);
+      simcall->issuer_->simcall_answer();
     });
   }
 
   for (size_t i = 0; i < count; i++) {
     /* associate this simcall to the the synchro */
-    smx_activity_t& synchro = synchros[i];
-    synchro->simcalls_.push_back(simcall);
+    auto* comm = comms[i];
+    comm->simcalls_.push_back(simcall);
 
     /* see if the synchro is already finished */
-    if (synchro->state_ != SIMIX_WAITING && synchro->state_ != SIMIX_RUNNING) {
-      synchro->finish();
+    if (comm->state_ != simgrid::kernel::activity::State::WAITING &&
+        comm->state_ != simgrid::kernel::activity::State::RUNNING) {
+      comm->finish();
       break;
     }
   }
@@ -345,8 +343,8 @@ void SIMIX_comm_copy_buffer_callback(simgrid::kernel::activity::CommImpl* comm,
 {
   XBT_DEBUG("Copy the data over");
   memcpy(comm->dst_buff_, buff, buff_size);
-  if (comm->detached) { // if this is a detached send, the source buffer was duplicated by SMPI sender to make the
-                        // original buffer available to the application ASAP
+  if (comm->detached()) { // if this is a detached send, the source buffer was duplicated by SMPI sender to make the
+                          // original buffer available to the application ASAP
     xbt_free(buff);
     comm->src_buff_ = nullptr;
   }
@@ -367,44 +365,78 @@ namespace simgrid {
 namespace kernel {
 namespace activity {
 
-CommImpl::CommImpl(CommImpl::Type type) : type(type)
+CommImpl& CommImpl::set_type(CommImpl::Type type)
+{
+  type_ = type;
+  return *this;
+}
+
+CommImpl& CommImpl::set_size(double size)
+{
+  size_ = size;
+  return *this;
+}
+
+CommImpl& CommImpl::set_rate(double rate)
+{
+  rate_ = rate;
+  return *this;
+}
+CommImpl& CommImpl::set_mailbox(MailboxImpl* mbox)
+{
+  mbox_ = mbox;
+  return *this;
+}
+
+CommImpl& CommImpl::set_src_buff(unsigned char* buff, size_t size)
 {
-  state_   = SIMIX_WAITING;
-  src_data_ = nullptr;
-  dst_data_ = nullptr;
-  XBT_DEBUG("Create comm activity %p", this);
+  src_buff_      = buff;
+  src_buff_size_ = size;
+  return *this;
+}
+
+CommImpl& CommImpl::set_dst_buff(unsigned char* buff, size_t* size)
+{
+  dst_buff_      = buff;
+  dst_buff_size_ = size;
+  return *this;
+}
+
+CommImpl& CommImpl::detach()
+{
+  detached_ = true;
+  return *this;
 }
 
 CommImpl::~CommImpl()
 {
-  XBT_DEBUG("Really free communication %p", this);
+  XBT_DEBUG("Really free communication %p in state %d (detached = %d)", this, static_cast<int>(state_), detached_);
 
   cleanupSurf();
 
-  if (detached && state_ != SIMIX_DONE) {
+  if (detached_ && state_ != State::DONE) {
     /* the communication has failed and was detached:
      * we have to free the buffer */
     if (clean_fun)
       clean_fun(src_buff_);
     src_buff_ = nullptr;
+  } else if (mbox_) {
+    mbox_->remove(this);
   }
-
-  if (mbox)
-    mbox->remove(this);
 }
 
 /**  @brief Starts the simulation of a communication synchro. */
-void CommImpl::start()
+CommImpl* CommImpl::start()
 {
   /* If both the sender and the receiver are already there, start the communication */
-  if (state_ == SIMIX_READY) {
-
+  if (state_ == State::READY) {
     s4u::Host* sender   = src_actor_->get_host();
     s4u::Host* receiver = dst_actor_->get_host();
 
-    surf_action_ = surf_network_model->communicate(sender, receiver, task_size_, rate_);
-    surf_action_->set_data(this);
-    state_ = SIMIX_RUNNING;
+    surf_action_ = surf_network_model->communicate(sender, receiver, size_, rate_);
+    surf_action_->set_activity(this);
+    surf_action_->set_category(get_tracing_category());
+    state_ = State::RUNNING;
 
     XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p)", this, sender->get_cname(),
               receiver->get_cname(), surf_action_);
@@ -413,8 +445,8 @@ void CommImpl::start()
     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();
+      state_ = State::LINK_FAILURE;
+      post();
 
     } else if (src_actor_->is_suspended() || dst_actor_->is_suspended()) {
       /* If any of the process is suspended, create the synchro but stop its execution,
@@ -431,6 +463,8 @@ void CommImpl::start()
       surf_action_->suspend();
     }
   }
+
+  return this;
 }
 
 /** @brief Copy the communication data from the sender's buffer to the receiver's one  */
@@ -438,7 +472,7 @@ 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)
+  if (not src_buff_ || not dst_buff_ || copied_)
     return;
 
   XBT_DEBUG("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)", this,
@@ -462,7 +496,7 @@ void CommImpl::copy_data()
 
   /* Set the copied flag so we copy data only once */
   /* (this function might be called from both communication ends) */
-  copied = true;
+  copied_ = true;
 }
 
 void CommImpl::suspend()
@@ -484,28 +518,21 @@ void CommImpl::resume()
 void CommImpl::cancel()
 {
   /* if the synchro is a waiting state means that it is still in a mbox so remove from it and delete it */
-  if (state_ == SIMIX_WAITING) {
-    mbox->remove(this);
-    state_ = SIMIX_CANCELED;
+  if (state_ == State::WAITING) {
+    if (not detached_) {
+      mbox_->remove(this);
+      state_ = State::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)) {
+             && not MC_record_replay_is_active() && (state_ == State::READY || state_ == State::RUNNING)) {
     surf_action_->cancel();
   }
 }
 
-/**  @brief get the amount remaining from the communication */
-double CommImpl::remains()
-{
-  return surf_action_->get_remains();
-}
-
 /** @brief This is part of the cleanup process, probably an internal command */
 void CommImpl::cleanupSurf()
 {
-  if (surf_action_) {
-    surf_action_->unref();
-    surf_action_ = nullptr;
-  }
+  clean_action();
 
   if (src_timeout_) {
     src_timeout_->unref();
@@ -522,28 +549,26 @@ void CommImpl::post()
 {
   /* Update synchro state */
   if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FINISHED)
-    state_ = SIMIX_SRC_TIMEOUT;
+    state_ = State::SRC_TIMEOUT;
   else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FINISHED)
-    state_ = SIMIX_DST_TIMEOUT;
+    state_ = State::DST_TIMEOUT;
   else if (src_timeout_ && src_timeout_->get_state() == resource::Action::State::FAILED)
-    state_ = SIMIX_SRC_HOST_FAILURE;
+    state_ = State::SRC_HOST_FAILURE;
   else if (dst_timeout_ && dst_timeout_->get_state() == resource::Action::State::FAILED)
-    state_ = SIMIX_DST_HOST_FAILURE;
+    state_ = State::DST_HOST_FAILURE;
   else if (surf_action_ && surf_action_->get_state() == resource::Action::State::FAILED) {
-    state_ = SIMIX_LINK_FAILURE;
+    state_ = State::LINK_FAILURE;
   } else
-    state_ = SIMIX_DONE;
+    state_ = State::DONE;
 
   XBT_DEBUG("SIMIX_post_comm: comm %p, state %d, src_proc %p, dst_proc %p, detached: %d", this, (int)state_,
-            src_actor_.get(), dst_actor_.get(), detached);
+            src_actor_.get(), dst_actor_.get(), detached_);
 
   /* destroy the surf actions associated with the Simix communication */
   cleanupSurf();
 
-  /* if there are simcalls associated with the synchro, then answer them */
-  if (not simcalls_.empty()) {
-    finish();
-  }
+  /* Answer all simcalls associated with the synchro */
+  finish();
 }
 
 void CommImpl::finish()
@@ -556,13 +581,13 @@ void CommImpl::finish()
      * list. Afterwards, get the position of the actual synchro in the waitany list and return it as the result of the
      * simcall */
 
-    if (simcall->call == SIMCALL_NONE) // FIXME: maybe a better way to handle this case
-      continue;                        // if process handling comm is killed
-    if (simcall->call == SIMCALL_COMM_WAITANY) {
+    if (simcall->call_ == SIMCALL_NONE) // FIXME: maybe a better way to handle this case
+      continue;                         // if actor handling comm is killed
+    if (simcall->call_ == SIMCALL_COMM_WAITANY) {
       SIMIX_waitany_remove_simcall_from_actions(simcall);
-      if (simcall->timer) {
-        simcall->timer->remove();
-        simcall->timer = nullptr;
+      if (simcall->timeout_cb_) {
+        simcall->timeout_cb_->remove();
+        simcall->timeout_cb_ = nullptr;
       }
       if (not MC_is_active() && not MC_record_replay_is_active()) {
         CommImpl** comms   = simcall_comm_waitany__get__comms(simcall);
@@ -574,92 +599,90 @@ void CommImpl::finish()
     }
 
     /* If the synchro is still in a rendez-vous point then remove from it */
-    if (mbox)
-      mbox->remove(this);
+    if (mbox_)
+      mbox_->remove(this);
 
     XBT_DEBUG("CommImpl::finish(): synchro state = %d", static_cast<int>(state_));
 
     /* Check out for errors */
 
-    if (not simcall->issuer->get_host()->is_on()) {
-      simcall->issuer->context_->iwannadie = true;
-      simcall->issuer->exception_ =
-          std::make_exception_ptr(simgrid::HostFailureException(XBT_THROW_POINT, "Host failed"));
+    if (not simcall->issuer_->get_host()->is_on()) {
+      simcall->issuer_->context_->iwannadie = true;
     } else {
       switch (state_) {
-
-        case SIMIX_DONE:
+        case State::DONE:
           XBT_DEBUG("Communication %p complete!", this);
           copy_data();
           break;
 
-        case SIMIX_SRC_TIMEOUT:
-          simcall->issuer->exception_ = std::make_exception_ptr(
-              simgrid::TimeoutError(XBT_THROW_POINT, "Communication timeouted because of the sender"));
+        case State::SRC_TIMEOUT:
+          simcall->issuer_->exception_ = std::make_exception_ptr(
+              simgrid::TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the sender"));
           break;
 
-        case SIMIX_DST_TIMEOUT:
-          simcall->issuer->exception_ = std::make_exception_ptr(
-              simgrid::TimeoutError(XBT_THROW_POINT, "Communication timeouted because of the receiver"));
+        case State::DST_TIMEOUT:
+          simcall->issuer_->exception_ = std::make_exception_ptr(
+              simgrid::TimeoutException(XBT_THROW_POINT, "Communication timeouted because of the receiver"));
           break;
 
-        case SIMIX_SRC_HOST_FAILURE:
-          if (simcall->issuer == src_actor_)
-            simcall->issuer->context_->iwannadie = true;
+        case State::SRC_HOST_FAILURE:
+          if (simcall->issuer_ == src_actor_)
+            simcall->issuer_->context_->iwannadie = true;
           else
-            simcall->issuer->exception_ =
+            simcall->issuer_->exception_ =
                 std::make_exception_ptr(simgrid::NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
           break;
 
-        case SIMIX_DST_HOST_FAILURE:
-          if (simcall->issuer == dst_actor_)
-            simcall->issuer->context_->iwannadie = true;
+        case State::DST_HOST_FAILURE:
+          if (simcall->issuer_ == dst_actor_)
+            simcall->issuer_->context_->iwannadie = true;
           else
-            simcall->issuer->exception_ =
+            simcall->issuer_->exception_ =
                 std::make_exception_ptr(simgrid::NetworkFailureException(XBT_THROW_POINT, "Remote peer failed"));
           break;
 
-        case SIMIX_LINK_FAILURE:
+        case State::LINK_FAILURE:
           XBT_DEBUG("Link failure in synchro %p between '%s' and '%s': posting an exception to the issuer: %s (%p) "
                     "detached:%d",
                     this, src_actor_ ? src_actor_->get_host()->get_cname() : nullptr,
-                    dst_actor_ ? dst_actor_->get_host()->get_cname() : nullptr, simcall->issuer->get_cname(),
-                    simcall->issuer, detached);
-          if (src_actor_ == simcall->issuer) {
+                    dst_actor_ ? dst_actor_->get_host()->get_cname() : nullptr, simcall->issuer_->get_cname(),
+                    simcall->issuer_, detached_);
+          if (src_actor_ == simcall->issuer_) {
             XBT_DEBUG("I'm source");
-          } else if (dst_actor_ == simcall->issuer) {
+          } else if (dst_actor_ == simcall->issuer_) {
             XBT_DEBUG("I'm dest");
           } else {
             XBT_DEBUG("I'm neither source nor dest");
           }
-          simcall->issuer->throw_exception(
+          simcall->issuer_->throw_exception(
               std::make_exception_ptr(simgrid::NetworkFailureException(XBT_THROW_POINT, "Link failure")));
           break;
 
-        case SIMIX_CANCELED:
-          if (simcall->issuer == dst_actor_)
-            simcall->issuer->exception_ = std::make_exception_ptr(
+        case State::CANCELED:
+          if (simcall->issuer_ == dst_actor_)
+            simcall->issuer_->exception_ = std::make_exception_ptr(
                 simgrid::CancelException(XBT_THROW_POINT, "Communication canceled by the sender"));
           else
-            simcall->issuer->exception_ = std::make_exception_ptr(
+            simcall->issuer_->exception_ = std::make_exception_ptr(
                 simgrid::CancelException(XBT_THROW_POINT, "Communication canceled by the receiver"));
           break;
 
         default:
           xbt_die("Unexpected synchro state in CommImpl::finish: %d", static_cast<int>(state_));
       }
+      simcall->issuer_->simcall_answer();
     }
     /* if there is an exception during a waitany or a testany, indicate the position of the failed communication */
-    if (simcall->issuer->exception_ &&
-        (simcall->call == SIMCALL_COMM_WAITANY || simcall->call == SIMCALL_COMM_TESTANY)) {
+    if (simcall->issuer_->exception_ &&
+        (simcall->call_ == SIMCALL_COMM_WAITANY || simcall->call_ == SIMCALL_COMM_TESTANY)) {
       // First retrieve the rank of our failing synchro
       CommImpl** comms;
       size_t count;
-      if (simcall->call == SIMCALL_COMM_WAITANY) {
+      if (simcall->call_ == SIMCALL_COMM_WAITANY) {
         comms = simcall_comm_waitany__get__comms(simcall);
         count = simcall_comm_waitany__get__count(simcall);
       } else {
-        /* simcall->call == SIMCALL_COMM_TESTANY */
+        /* simcall->call_ == SIMCALL_COMM_TESTANY */
         comms = simcall_comm_testany__get__comms(simcall);
         count = simcall_comm_testany__get__count(simcall);
       }
@@ -668,26 +691,19 @@ void CommImpl::finish()
 
       // In order to modify the exception we have to rethrow it:
       try {
-        std::rethrow_exception(simcall->issuer->exception_);
-      } catch (simgrid::TimeoutError& e) {
-        e.value                     = rank;
-        simcall->issuer->exception_ = std::make_exception_ptr(e);
-      } catch (simgrid::NetworkFailureException& e) {
-        e.value                     = rank;
-        simcall->issuer->exception_ = std::make_exception_ptr(e);
-      } catch (simgrid::CancelException& e) {
-        e.value                     = rank;
-        simcall->issuer->exception_ = std::make_exception_ptr(e);
+        std::rethrow_exception(simcall->issuer_->exception_);
+      } catch (simgrid::Exception& e) {
+        e.value = rank;
       }
     }
 
-    simcall->issuer->waiting_synchro = nullptr;
-    simcall->issuer->comms.remove(this);
-    if (detached) {
-      if (simcall->issuer == src_actor_) {
+    simcall->issuer_->waiting_synchro = nullptr;
+    simcall->issuer_->comms.remove(this);
+    if (detached_) {
+      if (simcall->issuer_ == src_actor_) {
         if (dst_actor_)
           dst_actor_->comms.remove(this);
-      } else if (simcall->issuer == dst_actor_) {
+      } else if (simcall->issuer_ == dst_actor_) {
         if (src_actor_)
           src_actor_->comms.remove(this);
       } else {
@@ -695,11 +711,6 @@ void CommImpl::finish()
         src_actor_->comms.remove(this);
       }
     }
-
-    if (simcall->issuer->get_host()->is_on())
-      SIMIX_simcall_answer(simcall);
-    else
-      simcall->issuer->context_->iwannadie = true;
   }
 }