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module: gem5stats: enhance match() with regex support

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The current implementation of match() in the gem5stats module returns
records matching exactly the specified keys. This commit changes this
behaviour by matching keys over regular expressions, hence resulting in
a much more powerful match() implementation.
This commit is contained in:
Quentin Perret 2017-08-16 12:40:16 +01:00
parent 66a50a2f49
commit 64c865de59
1 changed files with 7 additions and 2 deletions
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9
devlib/module/gem5stats.py
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@ -12,6 +12,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import re
import sys
import logging
import os.path
@ -139,6 +140,10 @@ class Gem5StatsModule(Module):
self.logger.warning('Trying to match records in statistics file'
' while ROI {} is running'.format(label))
# Construct one large regex that concatenates all keys because
# matching one large expression is more efficient than several smaller
all_keys_re = re.compile('|'.join(keys))
def roi_active(roi_label, dump):
roi = self.rois[roi_label]
return (roi.field in dump) and (int(dump[roi.field]) == 1)
@ -148,8 +153,8 @@ class Gem5StatsModule(Module):
for dump in iter_statistics_dump(stats_file):
active_rois = [l for l in rois_labels if roi_active(l, dump)]
if active_rois:
record = {k: dump[k] for k in keys}
yield (record, active_rois)
rec = {k: dump[k] for k in dump if all_keys_re.search(k)}
yield (rec, active_rois)
def next_dump_no(self):
'''