add lock option to open to disable locking
#35426
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JeffBezanson
added
performance
| @@ -16,8 +16,9 @@ mutable struct IOStream <: IO | |||
| name::AbstractString | |||
| mark::Int64 | |||
| lock::ReentrantLock | |||
| _dolock::Bool | |||
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Why the underscore? Is this field somehow more private than others?
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It's just me getting increasingly paranoid :)
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It's almost as if we need a way to actually prevent people from messing with private internals 😁
This was referenced Jan 28, 2021
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For #34195.
Tried reading a 240mb file a byte at a time:
julia 1.0: 1.82 sec
julia 1.4: 19 sec
this PR, lock=false: 2.6 sec