-/* Copyright (c) 2007-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2023. 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. */
#include "src/mc/remote/CheckerSide.hpp"
-#include <signal.h>
+#include "src/mc/ModelChecker.hpp"
+#include "src/mc/sosp/RemoteProcessMemory.hpp"
+#include "xbt/system_error.hpp"
+#include <csignal>
#include <sys/wait.h>
-simgrid::mc::CheckerSide::~CheckerSide()
-{
- if (socket_event_ != nullptr)
- event_free(socket_event_);
- if (signal_event_ != nullptr)
- event_free(signal_event_);
- if (base_ != nullptr)
- event_base_free(base_);
-}
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_checkerside, mc, "MC communication with the application");
-void simgrid::mc::CheckerSide::start(int socket, void (*handler)(int, short, void*))
+namespace simgrid::mc {
+CheckerSide::CheckerSide(int sockfd, ModelChecker* mc) : channel_(sockfd)
{
- base_ = event_base_new();
+ auto* base = event_base_new();
+ base_.reset(base);
- socket_event_ = event_new(base_, socket, EV_READ | EV_PERSIST, handler, this);
- event_add(socket_event_, NULL);
+ auto* socket_event = event_new(
+ base, get_channel().get_socket(), EV_READ | EV_PERSIST,
+ [](evutil_socket_t sig, short events, void* arg) {
+ auto checker = static_cast<simgrid::mc::CheckerSide*>(arg);
+ if (events == EV_READ) {
+ std::array<char, MC_MESSAGE_LENGTH> buffer;
+ ssize_t size = recv(checker->get_channel().get_socket(), buffer.data(), buffer.size(), MSG_DONTWAIT);
+ if (size == -1) {
+ XBT_ERROR("Channel::receive failure: %s", strerror(errno));
+ if (errno != EAGAIN)
+ throw simgrid::xbt::errno_error();
+ }
- signal_event_ = event_new(base_, SIGCHLD, EV_SIGNAL | EV_PERSIST, handler, this);
- event_add(signal_event_, NULL);
+ if (not mc_model_checker->get_remote_process_memory().handle_message(buffer.data(), size))
+ checker->break_loop();
+ } else {
+ xbt_die("Unexpected event");
+ }
+ },
+ this);
+ event_add(socket_event, nullptr);
+ socket_event_.reset(socket_event);
+
+ auto* signal_event = event_new(
+ base, SIGCHLD, EV_SIGNAL | EV_PERSIST,
+ [](evutil_socket_t sig, short events, void* arg) {
+ auto mc = static_cast<simgrid::mc::ModelChecker*>(arg);
+ if (events == EV_SIGNAL) {
+ if (sig == SIGCHLD)
+ mc->get_remote_process_memory().handle_waitpid();
+ else
+ xbt_die("Unexpected signal: %d", sig);
+ } else {
+ xbt_die("Unexpected event");
+ }
+ },
+ mc);
+ event_add(signal_event, nullptr);
+ signal_event_.reset(signal_event);
}
-void simgrid::mc::CheckerSide::dispatch()
+void CheckerSide::dispatch_events() const
{
- event_base_dispatch(base_);
+ event_base_dispatch(base_.get());
}
-void simgrid::mc::CheckerSide::break_loop()
+void CheckerSide::break_loop() const
{
- event_base_loopbreak(base_);
+ event_base_loopbreak(base_.get());
}
+
+} // namespace simgrid::mc
