ruby: Use the const serialize interface in RubySystem

The new serialization code (kudos to Tim Jones) moves all of the state
mangling in RubySystem to memWriteback. This makes it possible to use
the new const serialization interface.

This changeset moves the cache recorder cleanup from the checkpoint()
method to drainResume() to make checkpointing truly constant and
updates the checkpointing code to use the new interface.

1 files changed, 7 insertions, 6 deletions

diff --git a/src/mem/ruby/system/System.hh b/src/mem/ruby/system/System.hh
index 787e4f4ae..a7afac45c 100644
--- a/src/mem/ruby/system/System.hh
+++ b/src/mem/ruby/system/System.hh
@@ -95,8 +95,9 @@ class RubySystem : public ClockedObject
     void resetStats();
 
     void memWriteback();
-    void serializeOld(CheckpointOut &cp) M5_ATTR_OVERRIDE;
+    void serialize(CheckpointOut &cp) const M5_ATTR_OVERRIDE;
     void unserialize(CheckpointIn &cp) M5_ATTR_OVERRIDE;
+    void drainResume() M5_ATTR_OVERRIDE;
     void process();
     void startup();
     bool functionalRead(Packet *ptr);
@@ -121,11 +122,11 @@ class RubySystem : public ClockedObject
                            uint64 cache_trace_size,
                            uint64 block_size_bytes);
 
-    void readCompressedTrace(std::string filename,
-                             uint8_t *&raw_data,
-                             uint64& uncompressed_trace_size);
-    void writeCompressedTrace(uint8_t *raw_data, std::string file,
-                              uint64 uncompressed_trace_size);
+    static void readCompressedTrace(std::string filename,
+                                    uint8_t *&raw_data,
+                                    uint64& uncompressed_trace_size);
+    static void writeCompressedTrace(uint8_t *raw_data, std::string file,
+                                     uint64 uncompressed_trace_size);
 
   private:
     // configuration parameters