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Revision d215d914ee388efb0737135d81dcc581e0016f8e authored by Keno Fischer on 15 July 2023, 17:01:26 UTC, committed by GitHub on 15 July 2023, 17:01:26 UTC 
Expand kwcall lowering positional default check to vararg (#50559)
 
Fixes the case from #50518, but we actually have two test cases in the
tests that also hit this (e.g. this one:
```
f40964(xs::Int...=1; k = 2) = (xs, k)
```
), but just happened not to hit the bad codegen path. #50556, once
merged would have complained on those definitions as well, without this
fix.
2 parent s 191256e + c272236
Raw File
threadpool_latency.jl 
# This file is a part of Julia. License is MIT: https://julialang.org/license

using Test
using Base.Threads

# This test has not been added to CI as there can be unexpected delays
# which cause timing-dependent actions to fail.

#=
Test to ensure that the interactive threadpool works as designed.

Task A is a standard task that does a lot of work (~2 seconds) without
yielding. This would prevent ordinarily prevent other tasks from running.

Task B is an interactive task that does a little work (~0.02 seconds) and
yields.

With an interactive threadpool, multiple task Bs should not see notable
delays in execution even when multiple task As are occupying Julia's
default threads.

This test should fail in the absence of an interactive thread.
=#
const N = 263000000 # busywork(N) takes ~1 sec on an i7-9750H @ 2.6GHz
function busywork(n::Int)
    acc = 0
    for i = 1:n
        x = rand(2:10)
        acc += i * x
    end
    return acc
end

function itask()
    h = N รท 50
    for i = 1:100
        t1 = time()
        busywork(h)
        yield()
        t2 = time()
        @test t2 - t1 < 0.15
    end
end

it1 = @spawn :interactive itask()
ti1 = @spawn busywork(N * 2);
it2 = @spawn :interactive itask()
ti2 = @spawn busywork(N * 2);
wait(it1)
wait(it2)
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