X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1b89437671ba572a199dd4ff5766ba82720cdf03..c19a107a096f503e67217fb178fa98eb742ceb4d:/src/kernel/activity/CommImpl.cpp

diff --git a/src/kernel/activity/CommImpl.cpp b/src/kernel/activity/CommImpl.cpp
index 91e3f17297..97495307e0 100644
--- a/src/kernel/activity/CommImpl.cpp
+++ b/src/kernel/activity/CommImpl.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2007-2020. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2007-2021. 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. */
@@ -77,7 +77,7 @@ XBT_PRIVATE simgrid::kernel::activity::ActivityImplPtr simcall_HANDLER_comm_isen
     other_comm->clean_fun = clean_fun;
   } else {
     other_comm->clean_fun = nullptr;
-    src_proc->activities_.push_back(other_comm);
+    src_proc->activities_.emplace_back(other_comm);
   }
 
   /* Setup the communication synchro */
@@ -160,7 +160,7 @@ simcall_HANDLER_comm_irecv(smx_simcall_t /*simcall*/, smx_actor_t receiver, smx_
       other_comm->state_ = simgrid::kernel::activity::State::READY;
       other_comm->set_type(simgrid::kernel::activity::CommImpl::Type::READY);
     }
-    receiver->activities_.push_back(other_comm);
+    receiver->activities_.emplace_back(other_comm);
   }
 
   /* Setup communication synchro */
@@ -309,7 +309,7 @@ void simcall_HANDLER_comm_waitany(smx_simcall_t simcall, simgrid::kernel::activi
   }
 
   if (timeout < 0.0) {
-    simcall->timeout_cb_ = NULL;
+    simcall->timeout_cb_ = nullptr;
   } else {
     simcall->timeout_cb_ = simgrid::simix::Timer::set(SIMIX_get_clock() + timeout, [simcall]() {
       simcall->timeout_cb_ = nullptr;
@@ -408,11 +408,16 @@ CommImpl& CommImpl::detach()
   return *this;
 }
 
+CommImpl::CommImpl(s4u::Host* from, s4u::Host* to, double bytes) : size_(bytes), detached_(true), from_(from), to_(to)
+{
+  state_ = State::READY;
+}
+
 CommImpl::~CommImpl()
 {
   XBT_DEBUG("Really free communication %p in state %d (detached = %d)", this, static_cast<int>(state_), detached_);
 
-  cleanupSurf();
+  cleanup_surf();
 
   if (detached_ && state_ != State::DONE) {
     /* the communication has failed and was detached:
@@ -430,25 +435,26 @@ CommImpl* CommImpl::start()
 {
   /* If both the sender and the receiver are already there, start the communication */
   if (state_ == State::READY) {
-    s4u::Host* sender   = src_actor_->get_host();
-    s4u::Host* receiver = dst_actor_->get_host();
+    from_ = from_ != nullptr ? from_ : src_actor_->get_host();
+    to_   = to_ != nullptr ? to_ : dst_actor_->get_host();
 
-    surf_action_ = surf_network_model->communicate(sender, receiver, size_, rate_);
+    surf_action_ = surf_network_model->communicate(from_, to_, 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_);
+    XBT_DEBUG("Starting communication %p from '%s' to '%s' (surf_action: %p; state: %s)", this, from_->get_cname(),
+              to_->get_cname(), surf_action_, get_state_str());
 
     /* 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());
+      XBT_DEBUG("Communication from '%s' to '%s' failed to start because of a link failure", from_->get_cname(),
+                to_->get_cname());
       state_ = State::LINK_FAILURE;
       post();
 
-    } else if (src_actor_->is_suspended() || dst_actor_->is_suspended()) {
+    } else if ((src_actor_ != nullptr && src_actor_->is_suspended()) ||
+               (dst_actor_ != nullptr && dst_actor_->is_suspended())) {
       /* 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())
@@ -480,12 +486,12 @@ void CommImpl::copy_data()
             dst_actor_ ? dst_actor_->get_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_)
+  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_)
+    /* Update the receiver's buffer size to the copied amount */
     *dst_buff_size_ = buff_size;
+  }
 
   if (buff_size > 0) {
     if (copy_data_fun)
@@ -530,7 +536,7 @@ void CommImpl::cancel()
 }
 
 /** @brief This is part of the cleanup process, probably an internal command */
-void CommImpl::cleanupSurf()
+void CommImpl::cleanup_surf()
 {
   clean_action();
 
@@ -561,11 +567,11 @@ void CommImpl::post()
   } else
     state_ = State::DONE;
 
-  XBT_DEBUG("SIMIX_post_comm: comm %p, state %d, src_proc %p, dst_proc %p, detached: %d", this, (int)state_,
+  XBT_DEBUG("CommImpl::post(): comm %p, state %s, src_proc %p, dst_proc %p, detached: %d", this, get_state_str(),
             src_actor_.get(), dst_actor_.get(), detached_);
 
   /* destroy the surf actions associated with the Simix communication */
-  cleanupSurf();
+  cleanup_surf();
 
   /* Answer all simcalls associated with the synchro */
   finish();
@@ -581,9 +587,9 @@ 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 actor handling comm is killed
-    if (simcall->call_ == SIMCALL_COMM_WAITANY) {
+    if (simcall->call_ == simix::Simcall::NONE) // FIXME: maybe a better way to handle this case
+      continue;                                 // if actor handling comm is killed
+    if (simcall->call_ == simix::Simcall::COMM_WAITANY) {
       SIMIX_waitany_remove_simcall_from_actions(simcall);
       if (simcall->timeout_cb_) {
         simcall->timeout_cb_->remove();
@@ -674,15 +680,15 @@ void CommImpl::finish()
     }
     /* 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)) {
+        (simcall->call_ == simix::Simcall::COMM_WAITANY || simcall->call_ == simix::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_ == simix::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_ == simix::Simcall::COMM_TESTANY */
         comms = simcall_comm_testany__get__comms(simcall);
         count = simcall_comm_testany__get__count(simcall);
       }
@@ -707,8 +713,10 @@ void CommImpl::finish()
         if (src_actor_)
           src_actor_->activities_.remove(this);
       } else {
-        dst_actor_->activities_.remove(this);
-        src_actor_->activities_.remove(this);
+        if (dst_actor_ != nullptr)
+          dst_actor_->activities_.remove(this);
+        if (src_actor_ != nullptr)
+          src_actor_->activities_.remove(this);
       }
     }
   }