Wip++...

[loba.git] / process.cpp

diff --git a/process.cpp b/process.cpp
index bc71b9d270a153f5cf20c517b0da2c8cdbb12879..e1232f2ac59640923e46f1c5f5f0b627ca0055c8 100644 (file)
--- a/process.cpp
+++ b/process.cpp
@@ -1,3 +1,5 @@
+#include "process.h"
+
 #include <algorithm>
 #include <tr1/functional>
 #include <iterator>
@@ -7,7 +9,6 @@
 #include <xbt/time.h>
 #include "misc.h"
 #include "options.h"
-#include "process.h"
 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simu);
 
@@ -17,6 +18,11 @@ process::process(int argc, char* argv[])
         throw std::invalid_argument("bad or missing initial load");
 
     neigh.assign(argv + 2, argv + argc);
+
+    std::for_each(neigh.begin(), neigh.end(),
+                  std::tr1::bind(&process::insert_neighbor_in_map,
+                                 this, std::tr1::placeholders::_1));
+
     expected_load = load;
 
     ctrl_close_pending = data_close_pending = neigh.size();
@@ -43,15 +49,18 @@ process::process(int argc, char* argv[])
     print_loads(logp);
 }
 
+process::~process()
+{
+}
+
 int process::run()
 {
     bool one_more = true;
-    unsigned iter = 0;
 
     INFO1("Initial load: %g", load);
     VERB0("Starting...");
+    iter = 0;
     while (one_more) {
-        bool close_received;
         ++iter;
 
         if (opt::log_rate && iter % opt::log_rate == 0) {
@@ -64,13 +73,15 @@ int process::run()
         }
 
         compute();
-        close_received = !receive(false);
 
-        /*
-         *    compute load balancing;
-         *    send tasks to neighbors;
-         */
+        bool close_received = !receive(false);
+
+        if (opt::bookkeeping)
+            expected_load -= load_balance(expected_load);
+        else
+            load -= load_balance(load);
 
+        send();
         comm.flush(false);
 
         if (opt::exit_on_close && close_received)
@@ -106,6 +117,61 @@ void process::compute()
     MSG_task_destroy(task);
 }
 
+double process::load_balance(double /*my_load*/)
+{
+    return 0.0;
+}
+
+void process::send1_no_bookkeeping(neighbor& nb)
+{
+    comm.send(nb.get_ctrl_mbox(), new message(message::INFO, load));
+    double load_to_send = nb.get_to_send();
+    if (load_to_send > 0.0) {
+        comm.send(nb.get_data_mbox(), new message(message::LOAD, load_to_send));
+        nb.set_to_send(0.0);
+    }
+}
+
+void process::send1_bookkeeping(neighbor& nb)
+{
+    comm.send(nb.get_ctrl_mbox(), new message(message::INFO, expected_load));
+    double load_to_send;
+    double new_debt;
+    double debt_to_send = nb.get_to_send();
+    if (debt_to_send > 0.0) {
+        comm.send(nb.get_ctrl_mbox(),
+                  new message(message::CREDIT, debt_to_send));
+        nb.set_to_send(0.0);
+        new_debt = nb.get_debt() + debt_to_send;
+    } else {
+        new_debt = nb.get_debt();
+    }
+    if (load <= new_debt) {
+        load_to_send = load;
+        nb.set_debt(new_debt - load_to_send);
+        load = 0.0;
+    } else {
+        load_to_send = new_debt;
+        nb.set_debt(0.0);
+        load -= load_to_send;
+    }
+    if (load_to_send > 0.0)
+        comm.send(nb.get_data_mbox(), new message(message::LOAD, load_to_send));
+}
+
+void process::send()
+{
+    // fixme: shall we send data at all iterations?
+    if (opt::bookkeeping) {
+        std::for_each(neigh.begin(), neigh.end(),
+                      std::tr1::bind(&process::send1_bookkeeping,
+                                     this, std::tr1::placeholders::_1));
+    } else {
+        std::for_each(neigh.begin(), neigh.end(),
+                      std::tr1::bind(&process::send1_no_bookkeeping,
+                                     this, std::tr1::placeholders::_1));
+    }
+}
 
 // Returns false if a CLOSE message was received. 
 bool process::receive(bool wait_for_close)
@@ -118,10 +184,11 @@ bool process::receive(bool wait_for_close)
         DEBUG2("received %s from %s",
                msg->to_string().c_str(), MSG_host_get_name(from));
         switch (msg->get_type()) {
-        case message::INFO:
-            // fixme: update neighbor
-            // need a map m_host_t -> neighbor&
+        case message::INFO: {
+            neighbor* n = rev_neigh[from];
+            n->set_load(msg->get_amount());
             break;
+        }
         case message::CREDIT:
             expected_load += msg->get_amount();
             break;
@@ -146,15 +213,19 @@ bool process::receive(bool wait_for_close)
     return result;
 }
 
+void process::finalize1(neighbor& nb)
+{
+    comm.send(nb.get_ctrl_mbox(), new message(message::CTRL_CLOSE, 0.0));
+    comm.send(nb.get_data_mbox(), new message(message::DATA_CLOSE, 0.0));    
+}
+
 void process::finalize()
 {
     DEBUG2("send CLOSE to %d neighbor%s.",
            (int )neigh.size(), ESSE(neigh.size()));
-    std::vector<neighbor>::iterator n;
-    for (n = neigh.begin() ; n != neigh.end() ; ++n) {
-        comm.send(n->get_ctrl_mbox(), new message(message::CTRL_CLOSE, 0.0));
-        comm.send(n->get_data_mbox(), new message(message::DATA_CLOSE, 0.0));
-    }
+    std::for_each(neigh.begin(), neigh.end(),
+                  std::tr1::bind(&process::finalize1,
+                                 this, std::tr1::placeholders::_1));
 
     DEBUG2("wait for CLOSE from %d neighbor%s.",
            (int )neigh.size(), ESSE(neigh.size()));
@@ -180,6 +251,13 @@ void process::print_loads(e_xbt_log_priority_t logp)
     LOG1(logp, "Neighbor loads: %s", oss.str().c_str());
 }
 
+void process::insert_neighbor_in_map(neighbor& nb)
+{
+    neighbor* nbp = &nb;
+    m_host_t host = MSG_get_host_by_name(nb.get_name());
+    rev_neigh.insert(std::make_pair(host, nbp));
+}
+
 // Local variables:
 // mode: c++
 // End: