Merge zizzer.eecs.umich.edu:/z/m5/Bitkeeper/newmem

into  zizzer.eecs.umich.edu:/z/stever/bk/newmem-py

--HG--
extra : convert_revision : 36640569d33c4410320b8444bb572f408bf5edde

1 files changed, 27 insertions, 1 deletions

diff --git a/src/mem/bus.cc b/src/mem/bus.cc
index cfc99a64f..aec3ef2f6 100644
--- a/src/mem/bus.cc
+++ b/src/mem/bus.cc
@@ -72,9 +72,35 @@ Bus::recvTiming(Packet *pkt)
         assert(dest != pkt->getSrc()); // catch infinite loops
         port = interfaces[dest];
     }
-    return port->sendTiming(pkt);
+    if (port->sendTiming(pkt))  {
+        // packet was successfully sent, just return true.
+        return true;
+    }
+
+    // packet not successfully sent
+    retryList.push_back(interfaces[pkt->getSrc()]);
+    return false;
+}
+
+void
+Bus::recvRetry(int id)
+{
+    // Go through all the elements on the list calling sendRetry on each
+    // This is not very efficient at all but it works. Ultimately we should end
+    // up with something that is more intelligent.
+    int initialSize = retryList.size();
+    int i;
+    Port *p;
+
+    for (i = 0; i < initialSize; i++) {
+        assert(retryList.size() > 0);
+        p = retryList.front();
+        retryList.pop_front();
+        p->sendRetry();
+    }
 }
 
+
 Port *
 Bus::findPort(Addr addr, int id)
 {