28 lines
601 B
Ruby
28 lines
601 B
Ruby
# Copyright (c) HashiCorp, Inc.
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# SPDX-License-Identifier: BUSL-1.1
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require 'thread'
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module Vagrant
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module Util
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# Atomic counter implementation. This is useful for incrementing
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# a counter which is guaranteed to only be used once in its class.
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module Counter
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def get_and_update_counter(name=nil)
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name ||= :global
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mutex.synchronize do
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@__counter ||= Hash.new(1)
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result = @__counter[name]
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@__counter[name] += 1
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result
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end
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end
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def mutex
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@__counter_mutex ||= Mutex.new
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end
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end
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end
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end
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