monitors.py (1957B)
1 # Copyright 2024 The Chromium Authors 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 """ The module to provide measurements when it's supported. """ 5 6 import os 7 import sys 8 9 from contextlib import AbstractContextManager 10 11 from common import DIR_SRC_ROOT 12 13 PROTO_DIR = os.path.abspath( 14 os.path.join(DIR_SRC_ROOT, 'build', 'util', 'lib', 'proto')) 15 if os.path.isdir(PROTO_DIR): 16 sys.path.append(PROTO_DIR) 17 # pylint: disable=import-error, unused-import 18 from measures import average, clear, count, data_points, dump, tag, \ 19 time_consumption 20 else: 21 22 class Dummy(AbstractContextManager): 23 """Dummy implementation when measures components do not exist.""" 24 25 # pylint: disable=no-self-use 26 def record(self, *_) -> None: 27 """Dummy implementation of Measure.record.""" 28 29 # pylint: disable=no-self-use 30 def dump(self) -> None: 31 """Dummy implementation of Measure.dump.""" 32 # Shouldn't be called. 33 assert False 34 35 # pylint: disable=no-self-use 36 def __enter__(self) -> None: 37 pass 38 39 # pylint: disable=no-self-use 40 def __exit__(self, *_) -> bool: 41 return False 42 43 def average(*_) -> Dummy: 44 """Dummy implementation of measures.average.""" 45 return Dummy() 46 47 def count(*_) -> Dummy: 48 """Dummy implementation of measures.count.""" 49 return Dummy() 50 51 def clear(*_) -> None: 52 """Dummy implementation of measures.clear.""" 53 54 def data_points(*_) -> Dummy: 55 """Dummy implementation of measures.data_points.""" 56 return Dummy() 57 58 def time_consumption(*_) -> Dummy: 59 """Dummy implementation of measures.time_consumption.""" 60 return Dummy() 61 62 def dump(*_) -> None: 63 """Dummy implementation of measures.dump.""" 64 65 def tag(*_) -> None: 66 """Dummy implementation of measures.tag."""