sim-se: Add default to SyscallDesc constructor

[gem5.git] / src / sim / eventq.hh

diff --git a/src/sim/eventq.hh b/src/sim/eventq.hh
index 9d3c5c36a3d52d3e5eb4e9af196de60e09ff3159..0a0405fefb9d673419565a528e44ecde9eeaca05 100644 (file)
--- a/src/sim/eventq.hh
+++ b/src/sim/eventq.hh
@@ -542,28 +542,36 @@ class EventQueue
      * example, be useful when performing IO across thread event
      * queues when timing is not crucial (e.g., during fast
      * forwarding).
+     *
+     * ScopedMigration does nothing if both eqs are the same
      */
     class ScopedMigration
     {
       public:
-        ScopedMigration(EventQueue *_new_eq)
-            :  new_eq(*_new_eq), old_eq(*curEventQueue())
+        ScopedMigration(EventQueue *_new_eq, bool _doMigrate = true)
+            :new_eq(*_new_eq), old_eq(*curEventQueue()),
+             doMigrate((&new_eq != &old_eq)&&_doMigrate)
         {
-            old_eq.unlock();
-            new_eq.lock();
-            curEventQueue(&new_eq);
+            if (doMigrate){
+                old_eq.unlock();
+                new_eq.lock();
+                curEventQueue(&new_eq);
+            }
         }
 
         ~ScopedMigration()
         {
-            new_eq.unlock();
-            old_eq.lock();
-            curEventQueue(&old_eq);
+            if (doMigrate){
+                new_eq.unlock();
+                old_eq.lock();
+                curEventQueue(&old_eq);
+            }
         }
 
       private:
         EventQueue &new_eq;
         EventQueue &old_eq;
+        bool doMigrate;
     };
 
     /**
@@ -800,4 +808,32 @@ class EventWrapper : public Event
     const char *description() const { return "EventWrapped"; }
 };
 
+class EventFunctionWrapper : public Event
+{
+  private:
+      std::function<void(void)> callback;
+      std::string _name;
+
+  public:
+    EventFunctionWrapper(const std::function<void(void)> &callback,
+                         const std::string &name,
+                         bool del = false,
+                         Priority p = Default_Pri)
+        : Event(p), callback(callback), _name(name)
+    {
+        if (del)
+            setFlags(AutoDelete);
+    }
+
+    void process() { callback(); }
+
+    const std::string
+    name() const
+    {
+        return _name + ".wrapped_function_event";
+    }
+
+    const char *description() const { return "EventFunctionWrapped"; }
+};
+
 #endif // __SIM_EVENTQ_HH__