X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/9ec598fc7b8d73ed8e9822aed084ad1e1b2918b6..3a610d4d2775be71fa1297f7f335376b2945984e:/process.h

diff --git a/process.h b/process.h
index 1b4f9ca..cc10b04 100644
--- a/process.h
+++ b/process.h
@@ -4,7 +4,8 @@
 #define USE_UNORDERED_MAP 1
 //#undef USE_UNORDERED_MAP
 
-#include <vector>
+#include <algorithm>
+#include <tr1/functional>
 #ifdef USE_UNORDERED_MAP
 #  include <tr1/unordered_map>
 #  define MAP_TEMPLATE std::tr1::unordered_map
@@ -12,11 +13,15 @@
 #  include <map>
 #  define MAP_TEMPLATE std::map
 #endif
+#include <vector>
 #include <msg/msg.h>
 #include <xbt/log.h>
 #include "communicator.h"
+#include "misc.h"
+#include "msg_thread.h"
 #include "neighbor.h"
 #include "options.h"
+#include "synchro.h"
 
 class process {
 public:
@@ -27,7 +32,8 @@ 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 +44,20 @@ 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                { return expected_load; }
+
+    // The load balancing algorithm comes here...
+    virtual void load_balance();
+
+    // 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); }
+
+    // Sort pneigh by applying comp to their loads
+    template <typename Compare>
+    void pneigh_sort_by_load(const Compare& comp);
 
     // Calls neighbor::print(verbose, logp, cat) for each member of neigh.
     void print_loads(bool verbose = false,
@@ -53,7 +71,7 @@ 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;
@@ -72,39 +90,55 @@ 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);
-
-    // Virtually do some computation
-    void compute();
+    mutex_t mutex;              // synchronization between threads
+    condition_t cond;
 
-    // Send procedures, with helpers for bookkeeping mode or not
-    void send1_no_bookkeeping(neighbor& nb);
-    void send1_bookkeeping(neighbor& nb);
-    void send();
+    // Load-balancing loop
+    msg_thread* lb_thread;
+    void load_balance_loop();
 
-    // Returns true if there remains neighbors to listen for
-    bool may_receive() { return ctrl_close_pending || data_close_pending; }
+    // Simulate computation loop
+    void compute_loop();
 
-    // Receive procedure: wait (or not) for a message to come
-    void receive(bool wait);
+    // Check if we need to stop
+    bool still_running();
 
-    // Finalize sends a "close" message to each neighbor and wait for
-    // all of them to answer.
-    void finalize1(neighbor& nb);
-    void finalize();
+    // Returns the sum of "to_send" for all neighbors.
+    double get_sum_of_to_send() const;
+
+    // Send procedures
+    void ctrl_send(neighbor& nb);
+    void data_send(neighbor& nb);
+    void ctrl_close(neighbor& nb);
+    void data_close(neighbor& nb);
+
+    // Receive procedure
+    // Parameter "timeout" may be 0 for non-blocking operation, -1 for
+    // infinite waiting, or any positive timeout.
+    void ctrl_receive(double timeout);
+    void data_receive(double timeout);
+    void handle_message(message* msg, m_host_t from);
 };
 
+template <typename Compare>
+void process::pneigh_sort_by_load(const Compare& comp)
+{
+    using std::tr1::bind;
+    using std::tr1::placeholders::_1;
+    using std::tr1::placeholders::_2;
+    std::sort(pneigh.begin(), pneigh.end(),
+              bind(comp,
+                   bind(&neighbor::get_load, _1),
+                   bind(&neighbor::get_load, _2)));
+}
+
 #endif // !PROCESS_H
 
 // Local variables: