. "runtime"
	"testing"
	"time"
	"unsafe"
)

func TestProfBuf(t *testing.T) {
	const hdrSize = 2

	write := func(t *testing.T, b *ProfBuf, tag unsafe.Pointer, now int64, hdr []uint64, stk []uintptr) {
		b.Write(&tag, now, hdr, stk)
	}
	read := func(t *testing.T, b *ProfBuf, data []uint64, tags []unsafe.Pointer) {
		rdata, rtags, eof := b.Read(ProfBufNonBlocking)
		if !reflect.DeepEqual(rdata, data) || !reflect.DeepEqual(rtags, tags) {