class Flamegraph::Sampler
Public Class Methods
collect(fidelity=0.5) { || ... }
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# File lib/flamegraph/sampler.rb, line 2 def self.collect(fidelity=0.5) backtraces = [] done = false t = Thread.current thread = Thread.new do until done backtraces << t.backtrace_locations # On my machine using Ruby 2.0 this give me excellent fidelity of stack trace per 1.2ms # with this fidelity analysis becomes very powerful sleep (fidelity / 1000.0) end end begin yield ensure done = true thread.join end backtraces end