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fix: race condition when creating standard logger #68

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merged 1 commit into from
Aug 1, 2023
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@aymanbagabas aymanbagabas commented Jul 28, 2023

Before, StandardLog used to copy the internal buffer causing two or
more loggers to share the same buffer triggering a race.

Don't copy the internal buffer and reduce the mutex critical section
scope.

Fixes: #67

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codecov bot commented Jul 28, 2023

Codecov Report

Merging #68 (8254a5d) into main (280c4e3) will increase coverage by 0.64%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #68      +/-   ##
==========================================
+ Coverage   76.85%   77.49%   +0.64%     
==========================================
  Files          10       10              
  Lines         635      631       -4     
==========================================
+ Hits          488      489       +1     
+ Misses        132      128       -4     
+ Partials       15       14       -1     
Files Changed Coverage Δ
logger.go 85.07% <100.00%> (+2.31%) ⬆️
stdlog.go 75.00% <100.00%> (-1.20%) ⬇️

@aymanbagabas aymanbagabas changed the title fix: lock buffer during write before read fix: race condition when creating standard logger Aug 1, 2023
@aymanbagabas aymanbagabas requested a review from caarlos0 August 1, 2023 18:41
Before, `StandardLog` used to _copy_ the internal buffer causing two or
more loggers to share the same buffer triggering a race.

Don't copy the internal buffer and reduce the mutex critical section
scope.
@aymanbagabas aymanbagabas merged commit 97dd8c9 into main Aug 1, 2023
@aymanbagabas aymanbagabas deleted the write-race branch August 1, 2023 18:57
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Data race
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