ruby: reset and dump stats along with reset of the system

This patch adds support to ruby so that the statistics maintained by ruby
are reset/dumped when the statistics for the rest of the system are
reset/dumped. For resetting the statistics, ruby now provides the
resetStats() function that a sim object can provide. As a consequence, the
clearStats() function has been removed from RubySystem. For dumping stats,
Ruby now adds a callback event to the dumpStatsQueue. The exit callback that
ruby used to add earlier is being removed.

Created by: Hamid Reza Khaleghzadeh.
Improved by: Lluc Alvarez, Nilay Vaish
Committed by: Nilay Vaish

1 files changed, 8 insertions, 6 deletions

diff --git a/src/mem/ruby/system/System.hh b/src/mem/ruby/system/System.hh
index 245fa677e..24ec02111 100644
--- a/src/mem/ruby/system/System.hh
+++ b/src/mem/ruby/system/System.hh
@@ -36,6 +36,7 @@
 #define __MEM_RUBY_SYSTEM_SYSTEM_HH__
 
 #include "base/callback.hh"
+#include "base/output.hh"
 #include "mem/packet.hh"
 #include "mem/ruby/common/Global.hh"
 #include "mem/ruby/recorder/CacheRecorder.hh"
@@ -103,7 +104,7 @@ class RubySystem : public ClockedObject
     }
 
     void printStats(std::ostream& out);
-    void clearStats() const;
+    void resetStats();
 
     uint64 getInstructionCount(int thread) { return 1; }
 
@@ -172,18 +173,19 @@ operator<<(std::ostream& out, const RubySystem& obj)
     return out;
 }
 
-class RubyExitCallback : public Callback
+class RubyDumpStatsCallback : public Callback
 {
   private:
-    std::string stats_filename;
+    std::ostream *os;
     RubySystem *ruby_system;
 
   public:
-    virtual ~RubyExitCallback() {}
+    virtual ~RubyDumpStatsCallback() {}
 
-    RubyExitCallback(const std::string& _stats_filename, RubySystem *system)
+    RubyDumpStatsCallback(const std::string& _stats_filename,
+                          RubySystem *system)
     {
-        stats_filename = _stats_filename;
+        os = simout.create(_stats_filename);
         ruby_system = system;
     }