namespace simgrid::mc {
+/* CheckerSide: All what the checker needs to interact with a given application process */
+
class CheckerSide {
+ event* socket_event_;
+ event* signal_event_;
std::unique_ptr<event_base, decltype(&event_base_free)> base_{nullptr, &event_base_free};
- std::unique_ptr<event, decltype(&event_free)> socket_event_{nullptr, &event_free};
- std::unique_ptr<event, decltype(&event_free)> signal_event_{nullptr, &event_free};
- std::unique_ptr<RemoteProcessMemory> remote_memory_;
+
Channel channel_;
+ bool running_ = false;
+ pid_t pid_;
+ // When forking (no meminfo), the real app is our grandchild. In this case,
+ // child_checker_ is a CheckerSide to our child that can waitpid our grandchild on our behalf
+ CheckerSide* child_checker_ = nullptr;
+
+ void setup_events(bool socket_only); // Part of the initialization
+ void handle_dead_child(int status); // Launched when the dying child is the PID we follow
+ void handle_waitpid(); // Launched when receiving a sigchild
public:
- explicit CheckerSide(int sockfd, std::unique_ptr<RemoteProcessMemory> mem, ModelChecker* mc);
+ explicit CheckerSide(int socket, CheckerSide* child_checker);
+ explicit CheckerSide(const std::vector<char*>& args);
+ ~CheckerSide();
// No copy:
CheckerSide(CheckerSide const&) = delete;
CheckerSide& operator=(CheckerSide const&) = delete;
CheckerSide& operator=(CheckerSide&&) = delete;
+ /* Communicating with the application */
Channel const& get_channel() const { return channel_; }
Channel& get_channel() { return channel_; }
- RemoteProcessMemory& get_remote_memory() { return *remote_memory_.get(); }
+ bool handle_message(const char* buffer, ssize_t size);
void dispatch_events() const;
void break_loop() const;
+ void wait_for_requests();
+
+ /* Create a new CheckerSide by forking the currently existing one, and connect it through the master_socket */
+ std::unique_ptr<CheckerSide> clone(int master_socket, const std::string& master_socket_name);
+
+ /** Ask the application to run post-mortem analysis, and maybe to stop ASAP */
+ void finalize(bool terminate_asap = false);
+
+ /* Interacting with the application process */
+ pid_t get_pid() const { return pid_; }
+ bool running() const { return running_; }
+ void terminate() { running_ = false; }
};
} // namespace simgrid::mc
