( )⚙ D4348 util: make timedcm context manager also emit trace events

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Differential D4348

util: make timedcm context manager also emit trace events
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Authored by durin42 on Aug 21 2018, 5:39 PM.

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rHG497effb0a04a: util: make timedcm context manager also emit trace events
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rHG Mercurial
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Unit
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Mmercurial/util.py (6 lines)

Diff 10498

mercurial/util.py

import socket import socket
import stat import stat
import sys import sys
import time import time
import traceback import traceback
import warnings import warnings
import zlib import zlib
from hgdemandimport import tracing
from .thirdparty import ( from .thirdparty import (
attr, attr,
) )
from . import ( from . import (
encoding, encoding,
error, error,
i18n, i18n,
node as nodemod, node as nodemod,
level = attr.ib(default=1) level = attr.ib(default=1)
def __bytes__(self): def __bytes__(self):
return timecount(self.elapsed) if self.elapsed else '<unknown>' return timecount(self.elapsed) if self.elapsed else '<unknown>'
__str__ = encoding.strmethod(__bytes__) __str__ = encoding.strmethod(__bytes__)
@contextlib.contextmanager @contextlib.contextmanager
def timedcm(): def timedcm(whencefmt='unknown timedcm', *whenceargs):
"""A context manager that produces timing information for a given context. """A context manager that produces timing information for a given context.
On entering a timedcmstats instance is produced. On entering a timedcmstats instance is produced.
This context manager is reentrant. This context manager is reentrant.
""" """
# track nested context managers # track nested context managers
timedcm._nested += 1 timedcm._nested += 1
timing_stats = timedcmstats(level=timedcm._nested) timing_stats = timedcmstats(level=timedcm._nested)
try: try:
with tracing.log(whencefmt, *whenceargs):
yield timing_stats yield timing_stats
finally: finally:
timing_stats.elapsed = timer() - timing_stats.start timing_stats.elapsed = timer() - timing_stats.start
timedcm._nested -= 1 timedcm._nested -= 1
timedcm._nested = 0 timedcm._nested = 0
def timed(func): def timed(func):
'''Report the execution time of a function call to stderr. '''Report the execution time of a function call to stderr.