}
}

// ReadTrace returns the next chunk of binary tracing data, blocking until data
// is available. If tracing is turned off and all the data accumulated while it
// was on has been returned, ReadTrace returns nil. The caller must copy the
// returned data before calling ReadTrace again.
// ReadTrace must be called from one goroutine at a time.
func ReadTrace() []byte {
top:
	var buf []byte

	// The ordering of CPU profile sample events in the data stream is based on
	// when each run of the signal handler was able to acquire the spinlock,
	// with original timestamps corresponding to when ReadTrace pulled the data
	// off of the profBuf queue. Re-sort them by the timestamp we captured
	// inside the signal handler.
	slices.SortFunc(p.cpuSamples, func(a, b Event) int {
		return cmp.Compare(a.Ts, b.Ts)
	})