If dep calculation time exceeds 20 seconds then automatically

enable "complete" mode since any performance difference is
not as likely to be noticed by the user after this much time
has passed. (trunk r10773)

svn path=/main/branches/2.1.2/; revision=11429

1 files changed, 16 insertions, 5 deletions

diff --git a/bin/emerge b/bin/emerge
index 51bcdcad6..b90501314 100755
--- a/bin/emerge
+++ b/bin/emerge
@@ -2015,7 +2015,14 @@ class depgraph(object):
 
 	_dep_keys = ["DEPEND", "RDEPEND", "PDEPEND"]
 
+	# If dep calculation time exceeds this value then automatically
+	# enable "complete" mode since any performance difference is
+	# not as likely to be noticed by the user after this much time
+	# has passed.
+	_complete_thresold = 20
+
 	def __init__(self, settings, trees, myopts, myparams, spinner):
+		self._creation_time = time.time()
 		self.settings = settings
 		self.target_root = settings["ROOT"]
 		self.myopts = myopts
@@ -3444,16 +3451,20 @@ class depgraph(object):
 		intially satisfied.
 
 		Since this method can consume enough time to disturb users, it is
-		currently only enabled by the --complete-graph option.
+		currently only enabled by the --complete-graph option, or when
+		dep calculation time exceeds self._complete_thresold.
 		"""
-		if "complete" not in self.myparams:
-			# Skip this to avoid consuming enough time to disturb users.
-			return 1
-
 		if "--buildpkgonly" in self.myopts or \
 			"recurse" not in self.myparams:
 			return 1
 
+		if "complete" not in self.myparams:
+			if time.time() - self._creation_time > self._complete_thresold:
+				self.myparams.add("complete")
+			else:
+				# Skip this to avoid consuming enough time to disturb users.
+				return 1
+
 		# Put the depgraph into a mode that causes it to only
 		# select packages that have already been added to the
 		# graph or those that are installed and have not been