From: W. Trevor King <wking@tremily.us>
Date: Sat, 21 Jul 2012 11:56:49 +0000 (-0400)
Subject: Avoid expensive pformating in DynamicStructure.unpack_stream unless required.
X-Git-Tag: v0.2~16
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=ffb4b3eb3de75f53a92cbfe16473ab8c1461ea94;p=igor.git

Avoid expensive pformating in DynamicStructure.unpack_stream unless required.

If we're not going to be printing the formatted data in the log, don't
bother calculating it.  On my system, this speeds up the loading of
polar-graphs-demo.pxp by a factor of 10.
---

diff --git a/igor/struct.py b/igor/struct.py
index fce93b5..ea8af34 100644
--- a/igor/struct.py
+++ b/igor/struct.py
@@ -717,7 +717,8 @@ class DynamicStructure (Structure):
         for f in self.fields:
             _LOG.debug('parsing {!r}.{} (count={}, item_count={})'.format(
                     self, f, f.count, f.item_count))
-            _LOG.debug('data:\n{}'.format(_pprint.pformat(data)))
+            if _LOG.level <= _logging.DEBUG:
+                _LOG.debug('data:\n{}'.format(_pprint.pformat(data)))
             if hasattr(f, 'pre_unpack'):
                 _LOG.debug('pre-unpack {}'.format(f))
                 f.pre_unpack(parents=parents, data=data)