Merge "Add Google benchmark JSON parser"
diff --git a/utils/python/performance/__init__.py b/utils/python/performance/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/utils/python/performance/__init__.py
diff --git a/utils/python/performance/benchmark_parser.py b/utils/python/performance/benchmark_parser.py
new file mode 100644
index 0000000..1803a5e
--- /dev/null
+++ b/utils/python/performance/benchmark_parser.py
@@ -0,0 +1,79 @@
+#
+# Copyright (C) 2017 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.
+#
+
+import json
+
+
+class GoogleBenchmarkJsonParser(object):
+ """This class parses the JSON output of Google benchmark.
+
+ Example
+ {
+ "context": {
+ "date": "2017-05-16 11:57:21",
+ "num_cpus": 4,
+ "mhz_per_cpu": 19,
+ "cpu_scaling_enabled": true,
+ "library_build_type": "release"
+ },
+ "benchmarks": [
+ {
+ "name": "BM_sendVec_binder/4",
+ "iterations": 27744,
+ "real_time": 51485,
+ "cpu_time": 23655,
+ "time_unit": "ns"
+ },
+ ...
+ ]
+ }
+
+ Attributes:
+ _benchmarks: The "benchmarks" property of the JSON object.
+ """
+
+ _BENCHMARKS = "benchmarks"
+ _NAME = "name"
+ _REAL_TIME = "real_time"
+
+ def __init__(self, json_string):
+ """Converts the JSON string to internal data structure.
+
+ Args:
+ json_string: The output of Google benchmark in JSON format.
+ """
+ json_obj = json.loads(json_string)
+ self._benchmarks = json_obj[self._BENCHMARKS]
+
+ def getArguments(self):
+ """Returns the "name" properties with function names stripped.
+
+ Returns:
+ A list of strings.
+ """
+ args = []
+ for bm in self._benchmarks:
+ name = bm[self._NAME].split("/", 1)
+ args.append(name[1].encode("utf-8") if len(name) >= 2 else "")
+ return args
+
+ def getRealTime(self):
+ """Returns the "real_time" properties.
+
+ Returns:
+ A list of integers.
+ """
+ return [x[self._REAL_TIME] for x in self._benchmarks]
