From 85aea645349ded3e86427ec4f4e0ce2af67b85f6 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Tue, 10 Oct 2006 00:51:08 +0000
Subject: Avoid unnecessary population of the bintree by populating it as late
 as possible.

svn path=/main/trunk/; revision=4643
---
 pym/portage.py | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/pym/portage.py b/pym/portage.py
index c0286ca09..771c30846 100644
--- a/pym/portage.py
+++ b/pym/portage.py
@@ -4127,6 +4127,8 @@ class bindbapi(fakedbapi):
 		return mylist
 
 	def aux_update(self, cpv, values):
+		if not self.bintree.populated:
+			self.bintree.populate()
 		tbz2path = self.bintree.getname(cpv)
 		mylock = portage_locks.lockfile(tbz2path, wantnewlockfile=1)
 		try:
@@ -4139,6 +4141,11 @@ class bindbapi(fakedbapi):
 		finally:
 			portage_locks.unlockfile(mylock)
 
+	def cp_list(self, *pargs, **kwargs):
+		if not self.bintree.populated:
+			self.bintree.populate()
+		return fakedbapi.cp_list(self, *pargs, **kwargs)
+
 cptot=0
 class vardbapi(dbapi):
 	def __init__(self, root, categories=None, settings=None, vartree=None):
@@ -6868,20 +6875,6 @@ def global_updates(mysettings, trees, prev_mtimes):
 			writemsg_stdout("\n")
 
 #continue setting up other trees
-class LazyBintreeItem(object):
-	"""This class implements lazy construction of db[root]["bintree"]."""
-	def __init__(self, myroot, settings):
-		self._myroot = myroot
-		self._bintree = None
-		self._settings = settings
-	def __call__(self):
-		if self._bintree is None:
-			self._bintree = binarytree(self._myroot, self._settings["PKGDIR"],
-				settings=self._settings)
-			# The binarytree likely needs to be populated now, so we
-			# do it now to make sure that all method calls are safe.
-			self._bintree.populate()
-		return self._bintree
 
 class MtimeDB(dict):
 	def __init__(self, filename):
@@ -6963,8 +6956,8 @@ def create_trees(config_root="/", target_root="/", trees=None):
 				settings=mysettings)
 		trees[myroot].addLazySingleton("porttree",
 			portagetree, myroot, settings=mysettings)
-		trees[myroot].addLazyItem("bintree",
-			LazyBintreeItem(myroot, mysettings))
+		trees[myroot].addLazySingleton("bintree",
+			binarytree, myroot, mysettings["PKGDIR"], settings=mysettings)
 	return trees
 
 # Initialization of legacy globals.  No functions/classes below this point
-- 
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