simplify test2

testApp/test.db

@@ -8,11 +8,13 @@ record(longin, "$(P)li:cnt") {
 record(longin, "$(P)val:a") {
   field(DTYP, "Python Device")
   field(INP , "@test2 AAAA")
+  field(SCAN, "I/O Intr")
 }
 
 record(longin, "$(P)val:b") {
   field(DTYP, "Python Device")
   field(INP , "@test2 AAAA")
+  field(SCAN, "I/O Intr")
 }
 
 record(waveform, "$(P)wf") {

testApp/test2.py

@@ -2,64 +2,49 @@
 import weakref
 import threading, time
 from devsup.hooks import addHook
+from devsup.db import IOScanListThread
+from devsup.util import StoppableThread
 
 insts = {}
 
 def done(obj):
     print obj,'Expires'
 
-class Driver(threading.Thread):
+class Driver(StoppableThread):
     def __init__(self, name):
         super(Driver,self).__init__()
         self.name = name
-        self._lock = threading.Lock()
-        self._recs = set()
-        self._run = True
-        self._stop = threading.Event()
+        self.scan = IOScanListThread()
         self.value = 0
         addHook('AfterIocRunning', self.start)
-        addHook('AtIocExit', self.stop)
-
-    def stop(self):
-        print 'Stopping driver',self.name
-        with self._lock:
-            self._run = False
-        self._stop.wait()
-        print 'Finished with',self.value
-
-    def addrec(self, rec):
-        with self._lock:
-            self._recs.add(rec)
-    def delrec(self, rec):
-        with self._lock:
-            self._recs.remove(rec)
+        addHook('AtIocExit', self.join)
 
     def run(self):
         try:
-            while self._run:
+            while self.shouldRun():
                 time.sleep(1.0)
-                with self._lock:
+                
                 val = self.value
                 self.value += 1
-                    for R in self._recs:
-                        R.record.scan(sync=True, reason=val)
+                self.scan.interrupt(reason=val)
         finally:
-            self._stop.set()
+            self.finish()
 
 def addDrv(name):
     print 'Create driver',name
     insts[name] = Driver(name)
 
 class Device(object):
-    def __init__(self, rec, drv):
-        self.driver, self.record = drv, rec
-        self.driver.addrec(self)
-    def detach(self, rec):
-        self.driver.delrec(self)
-    def process(self, rec, data):
-        if data is not None:
-            self.VAL = data
+    def __init__(self, rec, args):
+        self.driver, self.record = insts[args], rec
+        self.allowScan = self.driver.scan.add
 
-def build(rec, args):
-    drv = insts[args]
-    return Device(rec, drv)
+    def detach(self, rec):
+        print 'detach',rec
+
+    def process(self, rec, data):
+        print 'test2 Update',rec,data
+        if data is not None:
+            rec.VAL = data
+
+build = Device