From 3dc72516fe915b5ba3722b11e07fb70211169509 Mon Sep 17 00:00:00 2001
From: Michael Vogt <michael.vogt@ubuntu.com>
Date: Fri, 23 Nov 2007 13:40:03 +0100
Subject: * python/progress.cc:   - fix refcount problem in OpProgress   - fix
 refcount problem in FetchProgress   - fix refcount problem in CdromProgress

---
 debian/changelog   |  4 ++++
 python/progress.cc | 11 +++++++++--
 tests/refcount.py  | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 48 insertions(+), 2 deletions(-)
 create mode 100755 tests/refcount.py

diff --git a/debian/changelog b/debian/changelog
index ef68c616..ca3308c8 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -17,6 +17,10 @@ python-apt (0.7.4) UNRELEASED; urgency=low
   * python/sourceslist.cc:
     - support new "List" attribute that returns the list of
       metaIndex source entries
+  * python/progress.cc:
+    - fix refcount problem in OpProgress
+    - fix refcount problem in FetchProgress
+    - fix refcount problem in CdromProgress
 
  -- Michael Vogt <michael.vogt@ubuntu.com>  Mon, 30 Jul 2007 22:33:59 +0200
 
diff --git a/python/progress.cc b/python/progress.cc
index df9c2ec1..793265db 100644
--- a/python/progress.cc
+++ b/python/progress.cc
@@ -65,10 +65,11 @@ void PyOpProgress::Update()
    Py_XDECREF(o);
 
    // Build up the argument list... 
-   PyObject *arglist = Py_BuildValue("(f)", Percent);
    if(CheckChange(0.05))
+   {
+      PyObject *arglist = Py_BuildValue("(f)", Percent);
       RunSimpleCallback("update", arglist);
-   Py_XDECREF(arglist);
+   }
 };
 
 void PyOpProgress::Done()
@@ -163,14 +164,19 @@ bool PyFetchProgress::Pulse(pkgAcquire * Owner)
    PyObject *o;
    o = Py_BuildValue("f", CurrentCPS);
    PyObject_SetAttrString(callbackInst, "currentCPS", o);
+   Py_XDECREF(o);
    o = Py_BuildValue("f", CurrentBytes);
    PyObject_SetAttrString(callbackInst, "currentBytes", o);
+   Py_XDECREF(o);
    o = Py_BuildValue("i", CurrentItems);
    PyObject_SetAttrString(callbackInst, "currentItems", o);
+   Py_XDECREF(o);
    o = Py_BuildValue("i", TotalItems);
    PyObject_SetAttrString(callbackInst, "totalItems", o);
+   Py_XDECREF(o);
    o = Py_BuildValue("f", TotalBytes);
    PyObject_SetAttrString(callbackInst, "totalBytes", o);
+   Py_XDECREF(o);
 
    PyObject *arglist = Py_BuildValue("()");
    PyObject *result;   
@@ -306,6 +312,7 @@ void PyCdromProgress::Update(string text, int current)
 
    PyObject *o = Py_BuildValue("i", totalSteps);
    PyObject_SetAttrString(callbackInst, "totalSteps", o);
+   Py_XDECREF(o);
 
    RunSimpleCallback("update", arglist);
 }
diff --git a/tests/refcount.py b/tests/refcount.py
new file mode 100755
index 00000000..e8bd9c6d
--- /dev/null
+++ b/tests/refcount.py
@@ -0,0 +1,35 @@
+#!/usr/bin/python-dbg
+
+from pprint import pprint,pformat
+import apt
+import sys
+import gc
+import difflib
+
+# get initial cache
+print sys.gettotalrefcount()
+progress= apt.progress.OpTextProgress()
+c = apt.Cache(progress)
+print "refcount after first cache instance: ", sys.gettotalrefcount()
+
+# test open()
+c.open(progress)
+print "refcount after cache open: ", sys.gettotalrefcount()
+#pprint(sys.getobjects(10))
+
+c.open(apt.progress.OpProgress())
+print "refcount after seconf cache open: ", sys.gettotalrefcount()
+#pprint(sys.getobjects(10))
+
+# FIXME: find a way to get a efficient diff
+#before = gc.get_objects()
+#c.open(apt.progress.OpProgress())
+#after = gc.get_objects()
+
+
+# test update()
+print "refcount before cache.update(): ", sys.gettotalrefcount()
+c.update()
+gc.collect()
+print "refcount after cache.update(): ", sys.gettotalrefcount()
+pprint(sys.getobjects(20))
-- 
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