runtime/pprof.profileBuilder.havePeriod (field)
4 uses
runtime/pprof (current package)
proto.go#L31: havePeriod bool
proto.go#L273: if !b.havePeriod {
proto.go#L284: b.havePeriod = true
proto.go#L346: if b.havePeriod { // must be CPU profile
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