X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/6d1fc1c31cb2152b6d20742081118524dbb78d14..423d3ad610d6a1e0587b42fd7d2a7a9959af778d:/src/s4u/s4u_comm.cpp

diff --git a/src/s4u/s4u_comm.cpp b/src/s4u/s4u_comm.cpp
index 9ecedf2a27..95a5a8712d 100644
--- a/src/s4u/s4u_comm.cpp
+++ b/src/s4u/s4u_comm.cpp
@@ -13,19 +13,16 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_comm,s4u_activity,"S4U asynchronous communic
 
 namespace simgrid {
 namespace s4u {
-
-s4u::Comm &Comm::send_init(s4u::MailboxPtr chan) {
-  s4u::Comm *res = new s4u::Comm();
-  res->sender_ = SIMIX_process_self();
-  res->mailbox_ = chan;
-  return *res;
-}
-
-s4u::Comm &Comm::recv_init(s4u::MailboxPtr chan) {
-  s4u::Comm *res = new s4u::Comm();
-  res->receiver_ = SIMIX_process_self();
-  res->mailbox_ = chan;
-  return *res;
+Comm::~Comm()
+{
+  if (state_ == started && not detached_ && (pimpl_ == nullptr || pimpl_->state == SIMIX_RUNNING)) {
+    XBT_INFO("Comm %p freed before its completion. Detached: %d, State: %d", this, detached_, state_);
+    if (pimpl_ != nullptr)
+      XBT_INFO("pimpl_->state: %d", pimpl_->state);
+    else
+      XBT_INFO("pimpl_ is null");
+    xbt_backtrace_display_current();
+  }
 }
 
 void Comm::setRate(double rate) {
@@ -75,6 +72,7 @@ void Comm::start() {
         matchFunction_, cleanFunction_, copyDataFunction_,
         userData_, detached_);
   } else if (dstBuff_ != nullptr) { // Receiver side
+    xbt_assert(not detached_, "Receive cannot be detached");
     pimpl_ = simcall_comm_irecv(receiver_, mailbox_->getImpl(), dstBuff_, &dstBuffSize_,
         matchFunction_, copyDataFunction_,
         userData_, rate_);
@@ -85,11 +83,14 @@ void Comm::start() {
   state_ = started;
 }
 void Comm::wait() {
-  xbt_assert(state_ == started || state_ == inited);
+  xbt_assert(state_ == started || state_ == inited || state_ == finished);
+
+  if (state_ == finished)
+    return;
 
   if (state_ == started)
     simcall_comm_wait(pimpl_, -1/*timeout*/);
-  else {// p_state == inited. Save a simcall and do directly a blocking send/recv
+  else { // state_ == inited. Save a simcall and do directly a blocking send/recv
     if (srcBuff_ != nullptr) {
       simcall_comm_send(sender_, mailbox_->getImpl(), remains_, rate_,
           srcBuff_, srcBuffSize_,
@@ -102,10 +103,13 @@ void Comm::wait() {
     }
   }
   state_ = finished;
-  delete this;
 }
+
 void Comm::wait(double timeout) {
-  xbt_assert(state_ == started || state_ == inited);
+  xbt_assert(state_ == started || state_ == inited || state_ == finished);
+
+  if (state_ == finished)
+    return;
 
   if (state_ == started) {
     simcall_comm_wait(pimpl_, timeout);
@@ -125,42 +129,57 @@ void Comm::wait(double timeout) {
         userData_, timeout, rate_);
   }
   state_ = finished;
-  delete this;
 }
 
-s4u::Comm &Comm::send_async(MailboxPtr dest, void *data, int simulatedSize) {
-  s4u::Comm &res = s4u::Comm::send_init(dest);
-  res.setRemains(simulatedSize);
-  res.srcBuff_ = data;
-  res.srcBuffSize_ = sizeof(void*);
-  res.start();
-  return res;
+void Comm::detach()
+{
+  xbt_assert(state_ == inited, "You cannot detach communications once they are started.");
+  xbt_assert(srcBuff_ != nullptr && srcBuffSize_ != 0, "You can only detach sends, not recvs");
+  detached_ = true;
+  start();
 }
 
-s4u::Comm &Comm::recv_async(MailboxPtr dest, void **data) {
-  s4u::Comm &res = s4u::Comm::recv_init(dest);
-  res.setDstData(data, sizeof(*data));
-  res.start();
-  return res;
+void Comm::cancel()
+{
+  simgrid::kernel::activity::CommImplPtr commPimpl =
+      boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(pimpl_);
+  commPimpl->cancel();
 }
 
-bool Comm::test() {
+bool Comm::test()
+{
   xbt_assert(state_ == inited || state_ == started || state_ == finished);
-  
-  if (state_ == finished) 
-    xbt_die("Don't call test on a finished comm.");
-  
+
+  if (state_ == finished) {
+    return true;
+  }
+
   if (state_ == inited) {
     this->start();
   }
-  
+
   if(simcall_comm_test(pimpl_)){
     state_ = finished;
-    delete this;
     return true;
   }
   return false;
 }
 
+MailboxPtr Comm::mailbox()
+{
+  return mailbox_;
+}
+
+void intrusive_ptr_release(simgrid::s4u::Comm* c)
+{
+  if (c->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
+    std::atomic_thread_fence(std::memory_order_acquire);
+    delete c;
+  }
+}
+void intrusive_ptr_add_ref(simgrid::s4u::Comm* c)
+{
+  c->refcount_.fetch_add(1, std::memory_order_relaxed);
 }
 }
+} // namespaces