- removed Scheduler-initiated events

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@604 3ecf2c5c-341e-0410-92b4-d18e462d057c

plugins/pyloader/Policy.py

@@ -36,13 +36,10 @@ class Policy:
     #
     # Should be implemented with signature:
     # @code
-    # def sort_queue(self, event, queue):
+    # def sort_queue(self, queue):
     #      # function body
     # @endcode
     #
-    # @param event Enumeration value of type Scheduler::Event,
-    # needed by some policies to know the reason of
-    # the call
     # @param queue The sgpem::SchedulableQueue to be sorted.
     # Only some methods of it are implemented,
     # notably get_item_at(position),

plugins/pyloader/ScriptAdapter.py

@@ -19,9 +19,6 @@ class ScriptAdapter :
     ## @var The policy this ScriptAdapter will use for calls
     _policy = None
 
-    ## @var The event to pass to Policy.sort_queue() after the asynchronous call
-    _event = None
-    
     ## @var Synchronized return value you can read from C++
     # when a threaded function returns
     _ret_val = None
@@ -59,19 +56,16 @@ class ScriptAdapter :
     # singleton, via SWIG
     #
     # @param self The caller object
-    # @param event The event to pass to sort_queue
-    def async_sort_queue(self, event):
-        self._event = event
+    def async_sort_queue(self):
         self._g_mutex.lock(ScriptAdapter._wrap_sort_queue, self)
 
     def _wrap_sort_queue(self):
-        thread.start_new_thread(ScriptAdapter._wrap_sort_queue_callback,
-                                (self,self._event))
+        thread.start_new_thread(ScriptAdapter._wrap_sort_queue_callback, (self,))
 
-    def _wrap_sort_queue_callback(self, event):
+    def _wrap_sort_queue_callback(self):
         # here we retrieve and pass the ready queue
         queue = sgpem.Scheduler.get_instance().get_ready_queue()
-        self._policy.sort_queue(event, queue)
+        self._policy.sort_queue(queue)
         self._g_mutex.unlock()
 
 

plugins/pyloader/builtin-policies/fcfs.py

@@ -35,7 +35,7 @@ class fcfs(Policy) :
     def get_time_slice(self):
         return -2
 
-    def sort_queue(self, event, queue):
+    def sort_queue(self, queue):
         cmpf = lambda a, b: \
             a.get_schedulable().get_arrival_time() < \
             b.get_schedulable().get_arrival_time()

plugins/pyloader/builtin-policies/sjf.py

@@ -35,7 +35,7 @@ class sjf(Policy) :
     def get_time_slice(self):
         return -1
 
-    def sort_queue(self, event, queue):
+    def sort_queue(self, queue):
         cmpf = lambda a, b: \
             a.get_cpu_time_left() < \
             b.get_cpu_time_left()

plugins/pyloader/python_policy.cc

@@ -98,19 +98,17 @@ PythonPolicy::configure() throw(UserInterruptException)
 
 
 void
-PythonPolicy::sort_queue(Scheduler::event event) const throw(UserInterruptException)
+PythonPolicy::sort_queue() const throw(UserInterruptException)
 {
-  PyObject* pEvent = PyInt_FromLong(event);
   PyObject* pMethodName = PyString_FromString("async_sort_queue");
-  PyObject* retval = PyObject_CallMethodObjArgs(_adapter, pMethodName, pEvent, NULL);
+  PyObject* retval = PyObject_CallMethodObjArgs(_adapter, pMethodName, NULL, NULL);
   
   // Do minimal debugging
   if(!retval) PyErr_Print();
   else Py_DECREF(retval);
   
   Py_DECREF(pMethodName);
-  Py_DECREF(pEvent);
-
+  
   wait_unlock();
 }
 

plugins/pyloader/python_policy.hh

@@ -56,7 +56,7 @@ namespace sgpem
     /**
     	Calls the method \c async_sort_queue
     */
-    void 			sort_queue(Scheduler::event) const throw(UserInterruptException);
+    void 			sort_queue() const throw(UserInterruptException);
 
     /**
     	\returns A textual description of this policy.

plugins/pyloader/testsuite/python_loader_configure.py

@@ -16,5 +16,5 @@ class python_loader_configure(Policy) :
     def get_time_slice(self):
         return -1
 
-    def sort_queue(self, event, queue):
+    def sort_queue(self, queue):
         pass

plugins/pyloader/testsuite/python_loader_get_time_slice.py

@@ -17,5 +17,5 @@ class python_loader_get_time_slice(Policy) :
             pass
         return -1
 
-    def sort_queue(self, event, queue):
+    def sort_queue(self, queue):
         pass

plugins/pyloader/testsuite/python_loader_is_preemptive.py

@@ -17,5 +17,5 @@ class python_loader_is_preemptive(Policy) :
     def get_time_slice(self):
         return -1
 
-    def sort_queue(self, event, queue):
+    def sort_queue(self, queue):
         pass

plugins/pyloader/testsuite/python_loader_sort_queue.py

@@ -14,7 +14,7 @@ class python_loader_sort_queue(Policy) :
     def get_time_slice(self):
         return -1
 
-    def sort_queue(self, event, queue):
+    def sort_queue(self, queue):
         print "[II] Entering willingly an endless loop."
         while True:
             pass

plugins/pyloader/testsuite/test-python_loader.cc

@@ -106,7 +106,7 @@ main(int argc, char** argv) {
     {
 	SchedulableQueue sl;
 	polman.test_init("python_loader_sort_queue");
-	polman.get_policy().sort_queue(Scheduler::event_schedulable_arrival);
+	polman.get_policy().sort_queue();
     }
     catch(UserInterruptException e)
     {

src/backend/policy.hh

@@ -60,9 +60,8 @@ namespace sgpem
 
 		  Because it's a pure virtual method, must be re-implemented 
 		  in concrete derived classes.
-		  \param event Call reason. Needed only by some scheduling policies.
 		 */
-		virtual void sort_queue(Scheduler::event event) const throw(UserInterruptException) = 0;
+		virtual void sort_queue() const throw(UserInterruptException) = 0;
 
 		/**
 		  Gets the unique identifier (id) of this Policy.
@@ -81,9 +80,6 @@ namespace sgpem
 
 		/**
 		  Tell if this policy is preemptible.
-		  If true, for the \ref Scheduler::SCHEDULABLE_ARRIVAL event, the 
-		  ready queue will contain also the running \ref Schedulable;
-		  else the running Schedulable will not be in the queue.
 
 		  Because it's a pure virtual method, must be re-implemented 
 		  in concrete derived classes.

src/backend/scheduler.cc

@@ -126,7 +126,7 @@ Scheduler::step_forward() throw(UserInterruptException)
 	    initial->get_item_at(i)->set_state(SchedulableStatus::state_ready);
 			
 	    // Sort the queue
-	    policy.sort_queue(event_schedulable_arrival);
+	    policy.sort_queue();
 		
 	    //restore the old running schedulable
 	    if (policy.is_pre_emptive() == false && running_ptr)
@@ -153,14 +153,14 @@ Scheduler::step_forward() throw(UserInterruptException)
 	  running_ptr = NULL;
 		
 	  //IF _ready_queue.size() == 0 sort_queue(...) is called but has no effect!!
-	  policy.sort_queue(event_schedulable_termination);
+	  policy.sort_queue();
 	}
 	
       //*****************
       // Check for time slice
       //*****************
       if (policy.get_time_slice() != numeric_limits<int>::max())	//time-slice
-	policy.sort_queue(event_end_time_slice);
+	policy.sort_queue();
 	
       //******************
       // Create the final list of schedulable

src/backend/scheduler.hh

@@ -55,25 +55,6 @@ namespace sgpem
 	class SG_DLLEXPORT Scheduler
 	{
 	public:
-		/**	The events that may cause the need for updating the scheduling queue
-		 and/or the running process.
-		 */
-		enum event
-		{
-			/** 
-			The arrival of a newly-created process.
-			*/
-			event_schedulable_arrival,
-			/** 
-			The termination of the executing process.
-			*/
-			event_schedulable_termination,
-			/**
-			The end of the executing process' time quantum.
-			*/
-			event_end_time_slice
-		};
-		
 		/** \brief Returns the unique instance of this class, conforming to the Singleton pattern.
 		 * 
 		 * If Scheduler isn't initialized, creates it. Should be called at least once before

src/testsuite/test-stepforward.cc

@@ -80,7 +80,7 @@ namespace sgpem
         {
         }
 
-        virtual void sort_queue(Scheduler::event event) const throw(UserInterruptException)
+        virtual void sort_queue() const throw(UserInterruptException)
         { // here a lot of fun, exactly O(n^2) fun!
             SchedulableQueue sl = History.get_instance().get_simulation_status_at(get_current_time());
             for (int i = 0; i < sl.size(); i++)