class MethodProfiler
Public Class Methods
clear()
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# File lib/prometheus_exporter/instrumentation/method_profiler.rb, line 45 def self.clear Thread.current[:_method_profiler] = nil end
patch(klass, methods, name)
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# File lib/prometheus_exporter/instrumentation/method_profiler.rb, line 7 def self.patch(klass, methods, name) patch_source_line = __LINE__ + 3 patches = methods.map do |method_name| <<~RUBY unless defined?(#{method_name}__mp_unpatched) alias_method :#{method_name}__mp_unpatched, :#{method_name} def #{method_name}(*args, &blk) unless prof = Thread.current[:_method_profiler] return #{method_name}__mp_unpatched(*args, &blk) end begin start = Process.clock_gettime(Process::CLOCK_MONOTONIC) #{method_name}__mp_unpatched(*args, &blk) ensure data = (prof[:#{name}] ||= {duration: 0.0, calls: 0}) data[:duration] += Process.clock_gettime(Process::CLOCK_MONOTONIC) - start data[:calls] += 1 end end end RUBY end.join("\n") klass.class_eval patches, __FILE__, patch_source_line end
start(transfer = nil)
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# File lib/prometheus_exporter/instrumentation/method_profiler.rb, line 39 def self.start(transfer = nil) Thread.current[:_method_profiler] = transfer || { __start: Process.clock_gettime(Process::CLOCK_MONOTONIC) } end
stop()
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# File lib/prometheus_exporter/instrumentation/method_profiler.rb, line 49 def self.stop finish = Process.clock_gettime(Process::CLOCK_MONOTONIC) if data = Thread.current[:_method_profiler] Thread.current[:_method_profiler] = nil start = data.delete(:__start) data[:total_duration] = finish - start end data end
transfer()
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# File lib/prometheus_exporter/instrumentation/method_profiler.rb, line 33 def self.transfer result = Thread.current[:_method_profiler] Thread.current[:_method_profiler] = nil result end