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Prefer xrange over range for small performance gain.

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range() allocates an actual list when called.  xrange() is just an iterator
and creates the next range item on demand.  This provides a slight
performance increase.

In python 3, range will do what xrange does currently, but the upgrade will
be handled by the 2to3 tool.

(Bitbake rev: 73b40f06444cb877a5960b2aa66abf7dacbd88f0)

Signed-off-by: Bob Foerster <robert@erafx.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Bob Foerster
2010-11-20 04:39:22 +08:00
committed by Richard Purdie
parent e81fc749f3
commit c6328564de
4 changed files with 37 additions and 37 deletions
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bitbake/lib/bb/taskdata.py
+4 -4
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@@ -493,7 +493,7 @@ class TaskData:
dependees = self.get_dependees(targetid)
for fnid in dependees:
self.fail_fnid(fnid, missing_list)
for taskid in range(len(self.tasks_idepends)):
for taskid in xrange(len(self.tasks_idepends)):
idepends = self.tasks_idepends[taskid]
for (idependid, idependtask) in idepends:
if idependid == targetid:
@@ -558,7 +558,7 @@ class TaskData:
logger.debug(3, ", ".join(self.run_names_index))
logger.debug(3, "build_targets:")
for buildid in range(len(self.build_names_index)):
for buildid in xrange(len(self.build_names_index)):
target = self.build_names_index[buildid]
targets = "None"
if buildid in self.build_targets:
@@ -566,7 +566,7 @@ class TaskData:
logger.debug(3, " (%s)%s: %s", buildid, target, targets)
logger.debug(3, "run_targets:")
for runid in range(len(self.run_names_index)):
for runid in xrange(len(self.run_names_index)):
target = self.run_names_index[runid]
targets = "None"
if runid in self.run_targets:
@@ -574,7 +574,7 @@ class TaskData:
logger.debug(3, " (%s)%s: %s", runid, target, targets)
logger.debug(3, "tasks:")
for task in range(len(self.tasks_name)):
for task in xrange(len(self.tasks_name)):
logger.debug(3, " (%s)%s - %s: %s",
task,
self.fn_index[self.tasks_fnid[task]],