Send actor action probes one at a time

[simgrid.git] / src / mc / remote / Channel.cpp

diff --git a/src/mc/remote/Channel.cpp b/src/mc/remote/Channel.cpp
index cfbf715..dfd07e5 100644 (file)
--- a/src/mc/remote/Channel.cpp
+++ b/src/mc/remote/Channel.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2015-2021. The SimGrid Team.
+/* Copyright (c) 2015-2023. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -8,14 +8,14 @@
 #include <xbt/log.h>
 
 #include <cerrno>
-#include <unistd.h>
+#include <cstring>
 #include <sys/socket.h>
 #include <sys/types.h>
+#include <unistd.h>
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_Channel, mc, "MC interprocess communication");
 
-namespace simgrid {
-namespace mc {
+namespace simgrid::mc {
 
 Channel::~Channel()
 {
@@ -26,20 +26,34 @@ Channel::~Channel()
 /** @brief Send a message; returns 0 on success or errno on failure */
 int Channel::send(const void* message, size_t size) const
 {
-  XBT_DEBUG("Send %s", to_c_str(*(MessageType*)message));
   while (::send(this->socket_, message, size, 0) == -1) {
-    if (errno != EINTR)
+    if (errno != EINTR) {
+      XBT_ERROR("Channel::send failure: %s", strerror(errno));
       return errno;
+    }
+  }
+
+  if (is_valid_MessageType(*static_cast<const int*>(message))) {
+    XBT_DEBUG("Sending %s (%zu bytes sent)", to_c_str(*static_cast<const MessageType*>(message)), size);
+  } else {
+    XBT_DEBUG("Sending bytes directly (from address %p) (%zu bytes sent)", message, size);
   }
+
   return 0;
 }
 
 ssize_t Channel::receive(void* message, size_t size, bool block) const
 {
   ssize_t res = recv(this->socket_, message, size, block ? 0 : MSG_DONTWAIT);
-  if (res != -1)
-    XBT_DEBUG("Receive %s", to_c_str(*(MessageType*)message));
+  if (res != -1) {
+    if (is_valid_MessageType(*static_cast<int*>(message))) {
+      XBT_DEBUG("Receive %s (requested %zu; received %zd)", to_c_str(*static_cast<MessageType*>(message)), size, res);
+    } else {
+      XBT_DEBUG("Receive %zd bytes", res);
+    }
+  } else {
+    XBT_ERROR("Channel::receive failure: %s", strerror(errno));
+  }
   return res;
 }
-}
-}
+} // namespace simgrid::mc