#define COMMUNICATOR_H
#include <list>
+#include <queue>
#include <string>
#include <msg/msg.h>
#include "hostdata.h"
+#include "synchro.h"
class message {
public:
communicator();
~communicator();
- // Start to listen for incoming messages
- void listen();
-
// Send a message to the "dest" mailbox
void send(const char* dest, message* msg);
- // Try to receive a message. Returns true on success.
- // If "wait" is true, blocks until success or error.
- bool recv(message*& msg, m_host_t& from, bool wait);
+ // Try to get a message. Returns true on success.
+ // Parameter "timeout" may be 0 for non-blocking operation, -1 for
+ // infinite waiting, or any positive timeout.
+ bool recv(message*& msg, m_host_t& from, double timeout);
// Try to flush pending sending communications.
// If "wait" is true, blocks until success.
void flush(bool wait);
- // Advertise that the next "close" message is the last one, and
- // that we do not await any message after that, either on the
- // control or the data channel.
- void next_close_on_ctrl_is_last();
- void next_close_on_data_is_last();
-
private:
// Myself
const hostdata* host;
// List of pending send communications
std::list<msg_comm_t> sent_comm;
- static const int send_count_before_flush;
- int send_counter;
-
- // Control channel for receiving
- m_task_t ctrl_task; // receive buffer
- msg_comm_t ctrl_comm; // receive communication
- bool ctrl_close_is_last; // do not rearm comm after next close
- // Data channel for receiving
- m_task_t data_task; // receive buffer
- msg_comm_t data_comm; // receive communication
- bool data_close_is_last; // do not rearm comm after next close
+ // Queue of received messages
+ std::queue<m_task_t> received;
- const char* get_ctrl_mbox() const { return host->get_ctrl_mbox(); }
- const char* get_data_mbox() const { return host->get_data_mbox(); }
+ // Handling of receiving thread
+ mutex_t receiver_mutex;
+ condition_t receiver_cond;
+ m_process_t receiver_thread;
+ static int receiver_wrapper(int, char* []);
+ void receiver();
- // Used to test if a communication is over, and to destroy it if it is.
+ // Used to chek if a communication is successfull before destroying it
+ static void comm_check_n_destroy(msg_comm_t comm);
+ // If comm is over, call comm_check_n_destroy(comm), and return true
static bool comm_test_n_destroy(msg_comm_t comm);
};
