Changeset 58fe85a for doc/papers/concurrency/examples/ProdCons.py

Timestamp:

Jan 7, 2021, 3:27:00 PM (5 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, master, new-ast-unique-expr, pthread-emulation, qualifiedEnum, stuck-waitfor-destruct

Children:

2b4daf2, 64aeca0

Parents:

3c64c668 (diff), eef8dfb (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge branch 'master' into park_unpark

File:

• doc/papers/concurrency/examples/ProdCons.py (modified) (1 diff)

doc/papers/concurrency/examples/ProdCons.py

@@ -1 +1 @@
 def Prod( N ):
-        cons = (yield)              # get cons
-        yield                       # resume scheduler
+        cons = yield                            # get cons
+        yield                                           # resume scheduler
         for i in range( N ):
                 print( "prod" )
-                yield cons              # execute next
+                yield cons                              # execute next
         print( "end", "prod" )
 
 def Cons( N ):
-        prod = (yield)              # get prod
-        yield                       # resume scheduler
+        prod = yield                            # get prod
+        yield                                           # resume scheduler
         for i in range( N ):
                 print( "cons" )
-                yield prod              # execute next
+                yield prod                              # execute next
         print( "end", "cons" )
 
 def Scheduler():
-        n = (yield)                 # starting coroutine
-        while True:
-                n = next( n )           # schedule coroutine
+        n = yield                                       # starting coroutine
+        try:
+                while True:
+                        n = next( n )           # schedule coroutine
+        except StopIteration:
+                pass
 
 prod = Prod( 5 )
 cons = Cons( 5 )
-next( prod )                    # prime
-prod.send( cons )               # send cons
-next( cons )                    # prime
-cons.send( prod )               # send prod
+next( prod )                                    # prime
+prod.send( cons )                               # send cons
+next( cons )                                    # prime
+cons.send( prod )                               # send prod
 
 s = Scheduler();
-next( s )                       # prime
+next( s )                                               # prime
 try:
         s.send( prod )                          # start cycle
-except StopIteration:
-        print( "scheduler stop" )
+except StopIteration:                   # scheduler stopped
+        pass
 print( "stop" )
 
 # Local Variables: #
 # tab-width: 4 #
-# compile-command: "python3.5 ProdCons.py" #
+# compile-command: "python3.7 ProdCons.py" #
 # End: #