traceRelease(trace)
}

func traceSpanTypeAndClass(s *mspan) traceArg {
	if s.state.get() == mSpanInUse {
		return traceArg(s.spanclass) << 1
	}
	return traceArg(1)
}

// SpanExists records an event indicating that the span exists.
func (tl traceLocker) SpanExists(s *mspan) {
	tl.eventWriter(traceGoRunning, traceProcRunning).commit(traceEvSpan, traceSpanID(s), traceArg(s.npages), traceSpanTypeAndClass(s))
}

import (
	"internal/abi"
	"internal/goarch"
	"unsafe"
)

// traceTypeTable maps stack traces (arrays of PC's) to unique uint32 ids.
// It is lock-free for reading.
type traceTypeTable struct {
	tab traceMap
}

// put returns a unique id for the type typ and caches it in the table,
// if it's seeing it for the first time.
//
// N.B. typ must be kept alive forever for this to work correctly.