Improved forced shutdown on Unix and Windows. Unix uses SIGKILL now, Windows os.abort().

git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@3852 e7d03fd6-7b0d-0410-9947-9c21f3af8025

ChangeLog.txt

@@ -67,6 +67,10 @@
     Changed: linkcheck/cookies.py
     Closes: SF bug #2016451
 
+  * Improved double Ctrl-C abort on Unix and Windows platforms.
+    Type: feature
+    Changed: linkcheck/director/__init__.py
+
 4.9 "Michael Clayton" (released 25.4.2008)
 
   * Parse Shockwave Flash (SWF) for URLs to check

linkcheck/director/__init__.py

@@ -100,8 +100,21 @@ def abort (aggregate):
             break
         except KeyboardInterrupt:
             log.warn(LOG_CHECK, _("keyboard interrupt; force shutdown"))
-            # forced exit without cleanup
-            os._exit(1)
+            abort_now()
+
+
+def abort_now ():
+    """Force exit of current process without cleanup."""
+    if os.name == 'posix':
+        # Unix systems can use sigkill
+        import signal
+        os.kill(os.getpid(), signal.SIGKILL)
+    elif os.name == 'nt':
+        # NT as os.abort()
+        os.abort()
+    else:
+        # All other systems have os._exit() as best shot.
+        os._exit(3)
 
 
 def get_aggregate (config):