modification to fairstrategy

[loba.git] / deployment.cpp

diff --git a/deployment.cpp b/deployment.cpp
index c5a1f9d40decaab7bc73e6f05e50c87bf6ca845a..a28d8d99ab3d75084be9de8a4ddac4e6c4557169 100644 (file)
--- a/deployment.cpp
+++ b/deployment.cpp
@@ -43,7 +43,7 @@ void deployment_generator::set_link(int host1, int host2)
 
 void deployment_generator::deploy()
 {
 
 void deployment_generator::deploy()
 {

-    const char* func = "simulation_main";
+    const char* func = "loba";

     xbt_dynar_t args = xbt_dynar_new(sizeof(const char*), NULL);
     for (unsigned i = 0 ; i < hosts.size() ; ++i) {
         const char* hostname = hostdata::at(i).get_name();
     xbt_dynar_t args = xbt_dynar_new(sizeof(const char*), NULL);
     for (unsigned i = 0 ; i < hosts.size() ; ++i) {
         const char* hostname = hostdata::at(i).get_name();


@@ -122,6 +122,67 @@ void deployment_star::generate()
         set_link(0, i);
 }
 
         set_link(0, i);
 }
 

-// void deployment_torus::generate()
-// {
-// }
+void deployment_torus::generate()
+{
+    unsigned a = 0;
+    unsigned b = size();
+    while (a + 1 < b) {
+        unsigned c = (a + b) / 2;
+        if (c * c < size())
+            a = c;
+        else
+            b = c;
+    }
+    unsigned width = b;
+    // here width == ceil(sqrt(size))
+
+    unsigned first_on_last_line = (size() - 1) - (size() - 1) % width;
+    DEBUG4("torus size = %u ; width = %u ; height = %u ; foll = %u",
+           (unsigned )size(), width,
+           (unsigned )(size() / width + !!(size() % width)),
+           first_on_last_line);
+    for (unsigned i = 0; i < size(); i++) {
+        unsigned next_line;
+        unsigned prev_line;
+        unsigned next_column;
+        unsigned prev_column;
+
+        next_line = i + width;
+        if (next_line >= size())
+            next_line %= width; // rewind
+
+        if (i >= width) {
+            prev_line = i - width;
+        } else {
+            prev_line = first_on_last_line + i; // rewind
+            if (prev_line >= size())
+                prev_line -= width; // need to go at last but one line
+        }
+
+        if (i != size() - 1) {
+            next_column = i + 1;
+            if (next_column % width == 0)
+                next_column -= width; // rewind
+        } else {
+            next_column = first_on_last_line; // special case for last cell
+        }
+
+        if (i % width != 0) {
+            prev_column = i - 1;
+        } else if (i < first_on_last_line) {
+            prev_column = i + width - 1; // rewind
+        } else {
+            prev_column = size() - 1; // special case for 1st cell of last line
+        }
+        if (next_line != i) {
+            set_neighbor(i, next_line);
+            if (prev_line != next_line)
+                set_neighbor(i, prev_line);
+        }
+        if (next_column != i) {
+            set_neighbor(i, next_column);
+            if (prev_column != next_column)
+                set_neighbor(i, prev_column);
+        }
+    }
+}