42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
import cProfile
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import os
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import pstats
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import lnx
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from lnx import log, utils
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if lnx.is_reload(__name__):
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log = lnx.reload_module(log)
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utils = lnx.reload_module(utils)
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else:
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lnx.enable_reload(__name__)
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class Profile:
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"""Context manager for profiling the enclosed code when the given condition is true.
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The output file is stored in the SDK directory and can be opened by tools such as SnakeViz.
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"""
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def __init__(self, filename_out: str, condition: bool):
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self.filename_out = filename_out
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self.condition = condition
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self.pr = cProfile.Profile()
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def __enter__(self):
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if self.condition:
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self.pr.enable()
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log.debug("Profiling started")
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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if self.condition:
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self.pr.disable()
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log.debug("Profiling finished")
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profile_path = os.path.join(utils.get_sdk_path(), self.filename_out)
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with open(profile_path, 'w', encoding="utf-8") as profile_file:
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stats = pstats.Stats(self.pr, stream=profile_file)
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stats.dump_stats(profile_path)
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return False
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