From db0da5c2732387f9e935d0603efd01b51267470e Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Wed, 25 Jun 2008 10:06:42 +0000
Subject: After the depgraph caches the vardb state in a FakeVartree, to make
 some room on the heap, clear the vardbapi caches.

svn path=/main/trunk/; revision=10782
---
 pym/_emerge/__init__.py      |  8 ++++++++
 pym/portage/dbapi/vartree.py | 12 +++++++++---
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/pym/_emerge/__init__.py b/pym/_emerge/__init__.py
index 7b6dc6e40..b5b726151 100644
--- a/pym/_emerge/__init__.py
+++ b/pym/_emerge/__init__.py
@@ -2025,6 +2025,14 @@ class depgraph(object):
 					# This triggers metadata updates via FakeVartree.
 					vardb.aux_get(pkg.cpv, [])
 					fakedb.cpv_inject(pkg)
+
+			# Now that the vardb state is cached in our FakeVartree,
+			# we won't be needing the real vartree cache for awhile.
+			# To make some room on the heap, clear the vardbapi
+			# caches.
+			trees[myroot]["vartree"].dbapi._clear_cache()
+			gc.collect()
+
 			self.mydbapi[myroot] = fakedb
 			def graph_tree():
 				pass
diff --git a/pym/portage/dbapi/vartree.py b/pym/portage/dbapi/vartree.py
index 80738662f..38fa50c4a 100644
--- a/pym/portage/dbapi/vartree.py
+++ b/pym/portage/dbapi/vartree.py
@@ -551,13 +551,19 @@ class vardbapi(dbapi):
 	def checkblockers(self, origdep):
 		pass
 
+	def _clear_cache(self):
+		self.mtdircache.clear()
+		self.matchcache.clear()
+		self.cpcache.clear()
+		self._aux_cache_obj = None
+
 	def _add(self, pkg_dblink):
-		self._clear_cache(pkg_dblink)
+		self._clear_pkg_cache(pkg_dblink)
 
 	def _remove(self, pkg_dblink):
-		self._clear_cache(pkg_dblink)
+		self._clear_pkg_cache(pkg_dblink)
 
-	def _clear_cache(self, pkg_dblink):
+	def _clear_pkg_cache(self, pkg_dblink):
 		# Due to 1 second mtime granularity in <python-2.5, mtime checks
 		# are not always sufficient to invalidate vardbapi caches. Therefore,
 		# the caches need to be actively invalidated here.
-- 
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