Add classic barrier.

- Add support for classic barrier object.
- Drop CORE_ from names in supercore

tools/gdb/python/supercore.py

@@ -5,7 +5,7 @@
 import threads
 import helper
 
-class CORE_message_queue:
+class message_queue:
     '''Manage a Supercore message_queue'''
 
     def __init__(self, message_queue):
@@ -16,3 +16,38 @@ class CORE_message_queue:
 
     def show(self):
         helper.tasks_printer_routine(self.wait_queue)
+
+class barrier_attributes:
+    '''supercore bbarrier attribute'''
+
+    def __init__(self,attr):
+        self.attr = attr
+
+    def max_count(self):
+        c = self.attr['maximum_count']
+        return c
+
+    def discipline(self):
+        d = self.attr['discipline']
+        return d
+
+class barrier_control:
+    '''Manage a Supercore barrier'''
+
+    def __init__(self, barrier):
+        self.barrier = barrier
+        self.wait_queue = threads.queue(self.barrier['Wait_queue'])
+        self.attr = barrier_attributes(self.barrier['Attributes'])
+
+    def waiting_threads(self):
+        wt = self.barrier['number_of_waiting_threads']
+        return wt
+
+    def max_count(self):
+        return self.attr.max_count()
+
+    def discipline(self):
+        return self.attr.discipline()
+
+    def tasks(self):
+        return self.wait_queue