Define process::send(), and simplify load_balance() logic.

[loba.git] / process.h

diff --git a/process.h b/process.h
index 1b4f9caa8ad72e1e0ed209598981dee60ae93deb..78fc507f963b58491477fc9e2a064efc7685bddf 100644 (file)
--- a/process.h
+++ b/process.h
@@ -27,7 +27,8 @@ public:
     process(int argc, char* argv[]);
     virtual ~process();
 
-    double get_load() const                { return load; }
+    double get_comp() const                { return comp; }
+    double get_real_load() const           { return real_load; }
 
     int run();
 
@@ -38,8 +39,14 @@ protected:
     pneigh_type pneigh;         // list of pointers to neighbors that
                                 // we are free to reorder
 
-    // Returns the sum of "to_send" for all neighbors.
-    double sum_of_to_send() const;
+    // Get and set current load, which may be real load, or expected
+    // load if opt::bookkeeping is true.
+    double get_load() const;
+    void set_load(double load);
+
+    // Register some amount of load to send to given neighbor.
+    void send(neighbor& nb, double amount);
+    void send(neighbor* nb, double amount) { send(*nb, amount); }
 
     // Calls neighbor::print(verbose, logp, cat) for each member of neigh.
     void print_loads(bool verbose = false,
@@ -53,7 +60,7 @@ protected:
 
 private:
     static double total_load_init; // sum of process loads at init
-    static double total_load_running; // summ of loads while running
+    static double total_load_running; // sum of loads while running
     static double total_load_exit; // sum of process loads at exit
 
     typedef MAP_TEMPLATE<m_host_t, neighbor*> rev_neigh_type;
@@ -72,18 +79,15 @@ private:
     unsigned lb_iter;           // counter of load-balancing iterations
     unsigned comp_iter;         // counter of computation iterations
 
+    double comp;                // total computing done so far (flops)
+
     double prev_load_broadcast; // used to ensure that we do not send
                                 // a same information messages
-    double load;                // current load
+    double real_load;           // current load
     double expected_load;       // expected load in bookkeeping mode
 
-    double& lb_load() { return opt::bookkeeping ? expected_load : load; }
-
     // The load balancing algorithm comes here...
-    // Parameter "my_load" is the load to take into account for myself
-    // (may be load or expected load).
-    // Returns the total load sent to neighbors.
-    virtual double load_balance(double my_load);
+    virtual void load_balance();
 
     // Virtually do some computation
     void compute();
@@ -91,13 +95,15 @@ private:
     // Send procedures, with helpers for bookkeeping mode or not
     void send1_no_bookkeeping(neighbor& nb);
     void send1_bookkeeping(neighbor& nb);
-    void send();
+    void send_all();
 
     // Returns true if there remains neighbors to listen for
     bool may_receive() { return ctrl_close_pending || data_close_pending; }
 
-    // Receive procedure: wait (or not) for a message to come
-    void receive(bool wait);
+    // Receive procedure
+    // Parameter "timeout" may be 0 for non-blocking operation, -1 for
+    // infinite waiting, or any positive timeout.
+    void receive(double timeout);
 
     // Finalize sends a "close" message to each neighbor and wait for
     // all of them to answer.
@@ -105,6 +111,24 @@ private:
     void finalize();
 };
 
+inline
+double process::get_load() const
+{
+    if (opt::bookkeeping)
+        return expected_load;
+    else
+        return real_load;
+}
+
+inline
+void process::set_load(double load)
+{
+    if (opt::bookkeeping)
+        expected_load = load;
+    else
+        real_load = load;
+}
+
 #endif // !PROCESS_H
 
 // Local variables: