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Gracefully handle a call to ensure_timeout_thread_created in a signal handler #64

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Jun 24, 2025
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Gracefully handle a call to ensure_timeout_thread_created in a signal handler #64

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3 changes: 3 additions & 0 deletions lib/timeout.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -123,6 +123,9 @@ def self.create_timeout_thread

def self.ensure_timeout_thread_created
unless @timeout_thread and @timeout_thread.alive?
# If the Mutex is already owned we are in a signal handler.
# In that case, just return and let the main thread create the @timeout_thread.
return if TIMEOUT_THREAD_MUTEX.owned?
TIMEOUT_THREAD_MUTEX.synchronize do
unless @timeout_thread and @timeout_thread.alive?
@timeout_thread = create_timeout_thread
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