From: Arnaud Giersch <arnaud.giersch@iut-bm.univ-fcomte.fr>
Date: Tue, 18 Jan 2011 21:51:47 +0000 (+0100)
Subject: There is a bug...
X-Git-Tag: v0.1~188^2~29
X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/commitdiff_plain/23529d55ccbfd0a851fdc86708320811ddda8ec4?ds=inline;hp=52cf3df3d9c14e871452621545b4ba7b8259bf0c

There is a bug...
---

diff --git a/TODO b/TODO
index 30586a5..3152ad9 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,16 @@
 * segfault with ./loba cluster1000.xml -N64 -a fairstrategy
 
+    this is a deadlock occuring when:
+    - a process is in the finalize stage;
+    - all processes  but one are blocked on receive;
+    - the process that is still running owns all the remaining load,
+      and sends it all to the finalizing process, and then goes in
+      blocking receive.
+    The finalizing process receives the load, and blocks again,
+    waiting for a close message.
+    All processes are then blocked, and non-one is able to see that
+    there is no more load in the system!
+
 * verify bookkeeping version.
 
 * add several metrics
diff --git a/process.cpp b/process.cpp
index 95ba1f9..0544b21 100644
--- a/process.cpp
+++ b/process.cpp
@@ -145,6 +145,8 @@ int process::run()
             opt::load_ratio_threshold) {
             VERB0("No more load to balance in system.");
             break;
+        } else {
+            DEBUG1("still %g load to balance, continuing...", total_load_running);
         }
     }
     VERB0("Going to finalize...");
@@ -264,6 +266,7 @@ void process::receive(bool wait)
     message* msg;
     m_host_t from;
 
+    DEBUG1("%sblocking receive", "\0non-" + !wait);
     while (may_receive() && comm.recv(msg, from, wait)) {
         switch (msg->get_type()) {
         case message::INFO: {