From 4f3b3d71000e5c8240647a2c10c081259a68b4c1 Mon Sep 17 00:00:00 2001
From: Jeff Connelly <shellreef+git@gmail.com>
Date: Sun, 25 May 2008 14:36:56 -0700
Subject: [PATCH] Instruction-level CPU simulator: fix SyntaxWarning on
 globals.

The 'global' command needs only to be used in the beginning
of a function, to indicate that the variable refers to a global;
it doesn't need to be used at the global scope.
---
 asm/logicCpu.py | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/asm/logicCpu.py b/asm/logicCpu.py
index 58bb47e..de4aeef 100755
--- a/asm/logicCpu.py
+++ b/asm/logicCpu.py
@@ -15,11 +15,9 @@ import sys, os, threading, time, signal
 # for safe termination
 CONTINUE = 0
 TERMINATE = 1
-global cont_exec
 cont_exec = CONTINUE
 
 # for concurency
-global locked
 locked = False
 
 TRACE = False
@@ -47,6 +45,8 @@ registers = {
 # Thread that gets input from user
 class CPUInput (threading.Thread):
     def run (self):
+        global cont_exec
+
         while True:
             print "Register Status: %s :" % registers,
 
@@ -54,13 +54,11 @@ class CPUInput (threading.Thread):
                 user_input = raw_input('Input value for IN:')
             except EOFError, e:
                 get_lock()
-                global cont_exec
                 cont_exec = TERMINATE
                 release_lock()
                 sys.exit()
 
             get_lock()
-            global cont_exec
             if cont_exec == TERMINATE:
                 sys.exit()
             release_lock()
@@ -80,8 +78,8 @@ def get_lock():
     ''' Busy wait lock to avoid race conditions.
         This function retrieves the lock.
     '''
-
     global locked
+
     while locked:
         a = 1
     locked = True
@@ -90,6 +88,7 @@ def release_lock():
     ''' This function releases the lock.
     '''
     global locked
+
     locked = False
 
 
-- 
2.11.4.GIT