#define COMMUNICATOR_H
#include <list>
+#include <queue>
#include <string>
#include <msg/msg.h>
+#include "hostdata.h"
class message {
public:
communicator();
~communicator();
- void listen();
-
+ // Send a message to the "dest" mailbox
void send(const char* dest, message* msg);
- bool recv(message*& msg, m_host_t& from, bool wait);
- void flush(bool wait);
- void next_close_on_ctrl_is_last();
- void next_close_on_data_is_last();
+ // 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);
private:
+ // Myself
+ const hostdata* host;
+
// List of pending send communications
std::list<msg_comm_t> sent_comm;
+ // Queue of received messages
+ std::queue<m_task_t> received;
+
// Control channel for receiving
- std::string ctrl_mbox;
- msg_comm_t ctrl_comm;
- m_task_t ctrl_task;
- bool ctrl_close_is_last;
+ m_task_t ctrl_task; // receive buffer
+ msg_comm_t ctrl_comm; // receive communication
// Data channel for receiving
- std::string data_mbox;
- msg_comm_t data_comm;
- m_task_t data_task;
- bool data_close_is_last;
-
- const char* get_ctrl_mbox() const { return ctrl_mbox.c_str(); }
- const char* get_data_mbox() const { return data_mbox.c_str(); }
-
- static void comm_push_in_dynar(xbt_dynar_t dynar, msg_comm_t comm);
+ m_task_t data_task; // receive buffer
+ msg_comm_t data_comm; // receive communication
+
+ 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
+ xbt_mutex_t receiver_mutex;
+ xbt_cond_t receiver_cond;
+ m_process_t receiver_thread;
+ static int receiver_wrapper(int, char* []);
+ void receiver1(msg_comm_t& comm, m_task_t& task, const char* mbox);
+ void receiver();
+
+ // 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);
};
