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1 # Copyright 2013 The Chromium Authors. All rights reserved. | 1 # Copyright 2013 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 | 5 |
6 """A helper module for parsing JSON objects from perf tests results.""" | 6 """A helper module for parsing JSON objects from perf tests results.""" |
7 | 7 |
8 import json | 8 import json |
9 | 9 |
10 | 10 |
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118 if result['min'] == -1 or result['min'] > delta: | 118 if result['min'] == -1 or result['min'] > delta: |
119 result['min'] = delta | 119 result['min'] = delta |
120 if result['max'] == -1 or result['max'] < delta: | 120 if result['max'] == -1 or result['max'] < delta: |
121 result['max'] = delta | 121 result['max'] = delta |
122 total_sum += delta | 122 total_sum += delta |
123 result['count'] += 1 | 123 result['count'] += 1 |
124 result['data_points'].append(delta) | 124 result['data_points'].append(delta) |
125 if entry['ph'] == 'I': | 125 if entry['ph'] == 'I': |
126 result['type'] = 'Instant' | 126 result['type'] = 'Instant' |
127 last_val = val | 127 last_val = val |
128 if result['count'] > 0: | 128 if result['count'] > 0: result['average'] = total_sum / result['count'] |
129 result['average'] = total_sum / result['count'] | |
130 | 129 |
131 return result | 130 return result |
132 | 131 |
133 | 132 |
134 def GetAverageRunInfoFromJSONString(json_string, name): | 133 def GetAverageRunInfoFromJSONString(json_string, name): |
135 """Returns the results from GetAverageRunInfo using a JSON string. | 134 """Returns the results from GetAverageRunInfo using a JSON string. |
136 | 135 |
137 Args: | 136 Args: |
138 json_string: The string containing JSON. | 137 json_string: The string containing JSON. |
139 name: The 'name' tag to filter on in the JSON file. | 138 name: The 'name' tag to filter on in the JSON file. |
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152 name: The 'name' tag to filter on in the JSON file. | 151 name: The 'name' tag to filter on in the JSON file. |
153 | 152 |
154 Returns: | 153 Returns: |
155 See GetAverageRunInfo Returns section. | 154 See GetAverageRunInfo Returns section. |
156 """ | 155 """ |
157 with open(json_file, 'r') as f: | 156 with open(json_file, 'r') as f: |
158 data = f.read() | 157 data = f.read() |
159 perf = json.loads(data) | 158 perf = json.loads(data) |
160 | 159 |
161 return GetAverageRunInfo(perf, name) | 160 return GetAverageRunInfo(perf, name) |
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