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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2024-06-24 07:14:26 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-24 07:14:26 (GMT) |
| commit | 544a47212b92f52ceffbd50275c6b0c57a446a98 (patch) | |
| tree | 7ad39158391255a0639226e83790b8877fd018b4 /Lib/logging/__init__.py | |
| parent | b7240ed3f09ffb4bb8bffac3a1ff88b1e99afa26 (diff) | |
| download | cpython-544a47212b92f52ceffbd50275c6b0c57a446a98.zip cpython-544a47212b92f52ceffbd50275c6b0c57a446a98.tar.gz cpython-544a47212b92f52ceffbd50275c6b0c57a446a98.tar.bz2 | |
[3.13] gh-120683: Fix an error in logging.LogRecord timestamp (GH-120709) (GH-120933)
The integer part of the timestamp can be rounded up, while the millisecond
calculation truncates, causing the log timestamp to be wrong by up to 999 ms
(affected roughly 1 in 8 million timestamps).
(cherry picked from commit 1500a23f33f5a6d052ff1ef6383d9839928b8ff1)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Diffstat (limited to 'Lib/logging/__init__.py')
| -rw-r--r-- | Lib/logging/__init__.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py index 174b37c..3f41442 100644 --- a/Lib/logging/__init__.py +++ b/Lib/logging/__init__.py @@ -340,11 +340,14 @@ class LogRecord(object): self.lineno = lineno self.funcName = func self.created = ct / 1e9 # ns to float seconds - # Get the number of whole milliseconds (0-999) in the fractional part of seconds. # Eg: 1_677_903_920_999_998_503 ns --> 999_998_503 ns--> 999 ms # Convert to float by adding 0.0 for historical reasons. See gh-89047 self.msecs = (ct % 1_000_000_000) // 1_000_000 + 0.0 + if self.msecs == 999.0 and int(self.created) != ct // 1_000_000_000: + # ns -> sec conversion can round up, e.g: + # 1_677_903_920_999_999_900 ns --> 1_677_903_921.0 sec + self.msecs = 0.0 self.relativeCreated = (ct - _startTime) / 1e6 if logThreads: |