From: Zac Medico <zmedico@gentoo.org>
Date: Sat, 11 Jun 2011 16:26:47 +0000 (-0700)
Subject: serialize_tasks: debug output for runtime cycles
X-Git-Tag: v2.2.0_alpha40~1
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=3e5b65a93e92a4cdb1c5e32c1ae8cf3c605b8391;p=portage.git

serialize_tasks: debug output for runtime cycles
---

diff --git a/pym/_emerge/depgraph.py b/pym/_emerge/depgraph.py
index 37dde2d81..41924b460 100644
--- a/pym/_emerge/depgraph.py
+++ b/pym/_emerge/depgraph.py
@@ -4698,7 +4698,9 @@ class depgraph(object):
 
 	def _serialize_tasks(self):
 
-		if "--debug" in self._frozen_config.myopts:
+		debug = "--debug" in self._frozen_config.myopts
+
+		if debug:
 			writemsg("\ndigraph:\n\n", noiselevel=-1)
 			self._dynamic_config.digraph.debug_print()
 			writemsg("\n", noiselevel=-1)
@@ -5050,6 +5052,15 @@ class depgraph(object):
 
 					selected_nodes = smallest_cycle
 
+					if selected_nodes and debug:
+						writemsg("\nruntime cycle digraph (%s nodes):\n\n" %
+							(len(selected_nodes),), noiselevel=-1)
+						cycle_digraph = mygraph.copy()
+						cycle_digraph.difference_update([x for x in
+							cycle_digraph if x not in selected_nodes])
+						cycle_digraph.debug_print()
+						writemsg("\n", noiselevel=-1)
+
 					if prefer_asap and asap_nodes and not selected_nodes:
 						# We failed to find any asap nodes to merge, so ignore
 						# them for the next iteration.