diff options
Diffstat (limited to 'pym')
| -rw-r--r-- | pym/emerge/__init__.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/pym/emerge/__init__.py b/pym/emerge/__init__.py index 6c1043937..2ce384d46 100644 --- a/pym/emerge/__init__.py +++ b/pym/emerge/__init__.py @@ -1971,6 +1971,16 @@ class depgraph: break return acceptable + def _merge_order_bias(self, nodes): + """Order nodes from highest to lowest overall reference count for + optimal leaf node selection.""" + node_info = {} + for node in self._parent_child_digraph.order: + node_info[node] = len(self.digraph.parent_nodes(node)) + def cmp_merge_preference(node1, node2): + return node_info[node2] - node_info[node1] + nodes.sort(cmp_merge_preference) + def altlist(self, reversed=False): if reversed in self._altlist_cache: return self._altlist_cache[reversed][:] @@ -1980,6 +1990,7 @@ class depgraph: self._altlist_cache[reversed] = retlist[:] return retlist mygraph=self.digraph.copy() + self._merge_order_bias(mygraph.order) myblockers = self.blocker_digraph.copy() retlist=[] circular_blocks = False |