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51 lines
1.4 KiB
51 lines
1.4 KiB
# DExTer : Debugging Experience Tester
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# ~~~~~~ ~ ~~ ~ ~~
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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"""RAII-style timer class to be used with a 'with' statement to get wall clock
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time for the contained code.
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"""
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import sys
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import time
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def _indent(indent):
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return '| ' * indent
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class Timer(object):
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fn = sys.stdout.write
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display = False
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indent = 0
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def __init__(self, name=None):
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self.name = name
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self.start = self.now
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def __enter__(self):
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Timer.indent += 1
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if Timer.display and self.name:
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indent = _indent(Timer.indent - 1) + ' _'
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Timer.fn('{}\n'.format(_indent(Timer.indent - 1)))
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Timer.fn('{} start {}\n'.format(indent, self.name))
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return self
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def __exit__(self, *args):
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if Timer.display and self.name:
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indent = _indent(Timer.indent - 1) + '|_'
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Timer.fn('{} {} time taken: {:0.1f}s\n'.format(
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indent, self.name, self.elapsed))
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Timer.fn('{}\n'.format(_indent(Timer.indent - 1)))
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Timer.indent -= 1
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@property
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def elapsed(self):
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return self.now - self.start
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@property
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def now(self):
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return time.time()
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