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Update docs for Fiber::ExecutionContext.default_workers_count #15664

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straight-shoota merged 1 commit into from
Apr 15, 2025
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Update docs for Fiber::ExecutionContext.default_workers_count #15664

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8 changes: 7 additions & 1 deletion src/fiber/execution_context.cr
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,13 @@ module Fiber::ExecutionContext
@@monitor = Monitor.new
end

# Returns the default number of workers to start in the execution context.
# Returns the number of threads to start in the default multi threaded
# execution context. Respects the `CRYSTAL_WORKERS` environment variable
# and otherwise returns the potential parallelism of the CPU (number of
# hardware threads).
#
# Currently unused because the default context is single threaded for
# now (this might change later with compilation flags).
def self.default_workers_count : Int32
ENV["CRYSTAL_WORKERS"]?.try(&.to_i?) || Math.min(System.cpu_count.to_i, 32)
end
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