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Use a monotonic clock for calibration #301

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Use a monotonic clock for calibration #301

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4 changes: 2 additions & 2 deletions lib/bcrypt/engine.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -118,9 +118,9 @@ def self.valid_secret?(secret)
# BCrypt::Password.create("woo", :cost => 12)
def self.calibrate(upper_time_limit_in_ms)
(BCrypt::Engine::MIN_COST..BCrypt::Engine::MAX_COST-1).each do |i|
start_time = Time.now
start_time = Process.clock_gettime(Process::CLOCK_MONOTONIC)
Password.create("testing testing", :cost => i+1)
end_time = Time.now - start_time
end_time = Process.clock_gettime(Process::CLOCK_MONOTONIC) - start_time
return i if end_time * 1_000 > upper_time_limit_in_ms
end
end
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