Add a simple multiprocessing wrapper to catch exceptions

Signed-off-by: Ansgar Burchardt <ansgar@debian.org>

diff --git a/daklib/dakmultiprocessing.py b/daklib/dakmultiprocessing.py
new file mode 100644 (file)
index 0000000..681755c
--- /dev/null
+++ b/daklib/dakmultiprocessing.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+# vim:set et sw=4:
+
+"""
+multiprocessing for DAK
+
+@contact: Debian FTP Master <ftpmaster@debian.org>
+@copyright: 2011  Ansgar Burchardt <ansgar@debian.org>
+@license: GNU General Public License version 2 or later
+"""
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+###############################################################################
+
+import multiprocessing
+
+class Pool():
+    def __init__(self, *args, **kwds):
+        self.pool = multiprocessing.Pool(*args, **kwds)
+        self.results = []
+
+    def apply_async(self, func, args=(), kwds={}, callback=None):
+        self.results.append(self.pool.apply_async(func, args, kwds, callback))
+
+    def close(self):
+        self.pool.close()
+
+    def join(self):
+        self.pool.join()
+        for r in self.results:
+            r.get()