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Make Base.disable_library_threading_hooks ephemeral to the process #59232

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Merged
merged 1 commit into from
Aug 18, 2025
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Make Base.disable_library_threading_hooks ephemeral to the process #59232

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11 changes: 7 additions & 4 deletions base/initdefs.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -494,10 +494,13 @@ end
## hook for disabling threaded libraries ##

library_threading_enabled::Bool = true
const disable_library_threading_hooks = []

# Base.OncePerProcess ensures that any registered hooks do not outlive the session.
# (even if they are registered during the sysimage build process by top-level code)
const disable_library_threading_hooks = Base.OncePerProcess(Vector{Any})

function at_disable_library_threading(f)
push!(disable_library_threading_hooks, f)
push!(disable_library_threading_hooks(), f)
if !library_threading_enabled
disable_library_threading()
end
Expand All @@ -506,8 +509,8 @@ end

function disable_library_threading()
global library_threading_enabled = false
while !isempty(disable_library_threading_hooks)
f = pop!(disable_library_threading_hooks)
while !isempty(disable_library_threading_hooks())
f = pop!(disable_library_threading_hooks())
try
f()
catch err
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