| #!/usr/bin/env python3 |
| # |
| # Copyright 2020 - The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from datetime import datetime |
| |
| |
| class PerformanceTestLogger(object): |
| """ |
| A helper class to log time points and intervals |
| """ |
| |
| def __init__(self): |
| self.base_timepoint = datetime.now() |
| # We use a dictionary of a list of timepoints |
| self.start_interval_points = {} |
| self.end_interval_points = {} |
| self.single_points = {} |
| |
| def log_single_point(self, label=""): |
| if label not in self.single_points: |
| self.single_points[label] = [] |
| self.single_points[label].append(datetime.now()) |
| |
| def start_interval(self, label=""): |
| if label not in self.start_interval_points: |
| self.start_interval_points[label] = [] |
| self.start_interval_points[label].append(datetime.now()) |
| |
| def end_interval(self, label=""): |
| if label not in self.end_interval_points: |
| self.end_interval_points[label] = [] |
| self.end_interval_points[label].append(datetime.now()) |
| |
| def _check_interval_label(self, label): |
| if label not in self.start_interval_points or label not in self.end_interval_points: |
| raise KeyError("label %s doesn't exist" % label) |
| if len(self.start_interval_points[label]) != len(self.end_interval_points[label]): |
| raise KeyError("label %s doesn't have correct start and end log" % label) |
| |
| def get_duration_of_intervals(self, label): |
| """ |
| Return the list of duration of the intervals with specified label. |
| """ |
| self._check_interval_label(label) |
| intervals = [] |
| for i in range(len(self.start_interval_points[label])): |
| interval = self.end_interval_points[label][i] - self.start_interval_points[label][i] |
| intervals.append(interval) |
| return intervals |
| |
| def dump_intervals(self): |
| """ |
| Gives an iterator of (iterator of label, start, end) over all labels |
| """ |
| for label in self.start_interval_points: |
| self._check_interval_label(label) |
| yield ((label, self.start_interval_points[label][i], self.end_interval_points[label][i]) |
| for i in range(len(self.start_interval_points[label]))) |
