1 /* Copyright (c) 2015-2023. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "src/mc/remote/Channel.hpp"
12 #include <sys/socket.h>
13 #include <sys/types.h>
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_Channel, mc, "MC interprocess communication");
18 namespace simgrid::mc {
22 if (this->socket_ >= 0)
26 /** @brief Send a message; returns 0 on success or errno on failure */
27 int Channel::send(const void* message, size_t size) const
29 if (size >= sizeof(int) && is_valid_MessageType(*static_cast<const int*>(message))) {
30 XBT_DEBUG("Sending %s (%zu bytes sent)", to_c_str(*static_cast<const MessageType*>(message)), size);
32 XBT_DEBUG("Sending bytes directly (from address %p) (%zu bytes sent)", message, size);
34 XBT_WARN("Request to send a 0-sized message! Proceeding anyway.");
37 while (::send(this->socket_, message, size, 0) == -1) {
39 XBT_ERROR("Channel::send failure: %s", strerror(errno));
46 ssize_t Channel::receive(void* message, size_t size) const
48 ssize_t res = recv(this->socket_, message, size, 0);
49 xbt_assert(res != -1, "Channel::receive failure: %s", strerror(errno));
50 if (static_cast<size_t>(res) >= sizeof(int) && is_valid_MessageType(*static_cast<const int*>(message))) {
51 XBT_DEBUG("Receive %s (requested %zu; received %zd at %p)", to_c_str(*static_cast<const MessageType*>(message)),
54 XBT_DEBUG("Receive %zd bytes", res);
58 } // namespace simgrid::mc