for mp := first; mp != nil; mp = mp.alllink {
		n++
	}
	if n <= size {
		ok = true
		for mp := first; mp != nil; mp = mp.alllink {
			r := profilerecord.StackRecord{Stack: mp.createstack[:]}
			copyFn(r)
		}
	}
	return
}

//go:linkname pprof_threadCreateInternal
func pprof_threadCreateInternal(p []profilerecord.StackRecord) (n int, ok bool) {