Version 0.4.

[loba.git] / process.h

diff --git a/process.h b/process.h
index 8a9e74c3d63da11bd185dfc525b567cf694e6b61..55ee792e1e59d56751fbe6157e858ee1a0acde58 100644 (file)
--- a/process.h
+++ b/process.h
@@ -5,7 +5,7 @@
 //#undef USE_UNORDERED_MAP
 
 #include <algorithm>
-#include <functional>
+#include <atomic>
 #ifdef USE_UNORDERED_MAP
 #  include <unordered_map>
 #  define MAP_TEMPLATE std::unordered_map
@@ -14,17 +14,21 @@
 #  define MAP_TEMPLATE std::map
 #endif
 #include <vector>
-#include <msg/msg.h>
+#include <simgrid/msg.h>
 #include <xbt/log.h>
 #include "communicator.h"
 #include "misc.h"
 #include "msg_thread.h"
 #include "neighbor.h"
 #include "options.h"
+#include "simgrid_features.h"
 #include "synchro.h"
 
 class process {
 public:
+    static void set_proc_mutex(mutex_t* m) { proc_mutex = m;            }
+
+    // Note: normally used with proc_mutex locked.
     static double get_total_load_init()    { return total_load_init;    }
     static double get_total_load_running() { return total_load_running; }
     static double get_total_load_exit()    { return total_load_exit;    }
@@ -34,6 +38,9 @@ public:
 
     double get_real_load() const           { return real_load;            }
     double get_comp_amount() const         { return acc.comp_amount;      }
+    unsigned get_comp_iter() const         { return comp_iter;            }
+    unsigned get_all_comp_iter() const     { return all_comp_iter;        }
+    double get_iter_deviation() const;
     double get_data_send_amount() const    { return acc.data_send.amount; }
     double get_data_recv_amount() const    { return acc.data_recv.amount; }
     unsigned get_data_send_count() const   { return acc.data_send.count;  }
@@ -42,6 +49,8 @@ public:
     double get_ctrl_recv_amount() const    { return acc.ctrl_recv.amount; }
     unsigned get_ctrl_send_count() const   { return acc.ctrl_send.count;  }
     unsigned get_ctrl_recv_count() const   { return acc.ctrl_recv.count;  }
+    double get_idle_duration() const       { return idle_duration;        }
+    double get_convergence() const         { return convergence;          }
 
     int run();
 
@@ -78,14 +87,25 @@ protected:
                        xbt_log_category_t cat = _XBT_LOGV(default)) const;
 
 private:
+    static mutex_t *proc_mutex; // protect access to global variables
+                                // (must be set before constructing
+                                // the first object!)
+
     static double total_load_init; // sum of process loads at init
     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;
+    static int process_counter;
+    static double total_load_average;
+    static double average_load_ratio;
+    static double load_diff_threshold;
+
+    static std::atomic<int> convergence_counter;
+
+    typedef MAP_TEMPLATE<msg_host_t, neighbor*> rev_neigh_type;
     neigh_type neigh;           // list of neighbors (do not alter
                                 // after construction!)
-    rev_neigh_type rev_neigh;   // map m_host_t -> neighbor
+    rev_neigh_type rev_neigh;   // map msg_host_t -> neighbor
 
     communicator comm;          // communicator for this process
     int ctrl_close_pending;     // number of "close" messages to wait
@@ -97,6 +117,8 @@ private:
 
     unsigned lb_iter;           // counter of load-balancing iterations
     unsigned comp_iter;         // counter of computation iterations
+    unsigned all_comp_iter;     // counter of computation iterations
+                                // (counting empty iterations too)
 
     double prev_load_broadcast; // used to ensure that we do not send
                                 // a same information messages
@@ -104,6 +126,10 @@ private:
     double expected_load;       // expected load in bookkeeping mode
     double received_load;       // load received from neighbors
 
+    double idle_duration;       // how long we had nothing to compute
+    double convergence;         // date when convergence was achieved, or -1.0
+    int local_convergence_counter; // number of iterations since convergence
+
     mutex_t mutex;              // synchronization between threads
     condition_t cond;
 
@@ -120,7 +146,9 @@ private:
         mesg_accounting ctrl_recv; // ctrl message received
         accounting(): comp_amount(0.0) { }
     };
-    accounting acc;
+    accounting acc;             // use a structure so that it is
+                                // automatically initialized a
+                                // construction
 
     void add_comp_amount(double amount) { acc.comp_amount += amount; }
     void add_data_send_mesg(double amount) {
@@ -147,6 +175,9 @@ private:
     // Simulate computation loop
     void compute_loop();
 
+    // Check for convergence
+    void convergence_check();
+
     // Check if we need to stop
     bool still_running();
 
@@ -167,18 +198,16 @@ private:
     // 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);
+    void handle_message(message* msg, msg_host_t from);
 };
 
 template <typename Compare>
 void process::pneigh_sort_by_load(const Compare& comp)
 {
-    using std::placeholders::_1;
-    using std::placeholders::_2;
     std::sort(pneigh.begin(), pneigh.end(),
-              std::bind(comp,
-                        std::bind(&neighbor::get_load, _1),
-                        std::bind(&neighbor::get_load, _2)));
+              [&comp](const neighbor* a, const neighbor* b) {
+                  return comp(a->get_load(), b->get_load());
+              });
 }
 
 #endif // !PROCESS_H