// Called during function prolog when more stack is needed.
//
// The traceback routines see morestack on a g0 as being
// the top of a stack (for example, morestack calling newstack
// calling the scheduler calling newm calling gc), so we must
// record an argument size. For that purpose, it has no arguments.
TEXT runtime·morestack(SB),NOSPLIT|NOFRAME,$0-0
	// Cannot grow scheduler stack (m->g0).
	get_tls(CX)

var http2dataChunkPools = [...]sync.Pool{
	{New: func() interface{} { return new([1 << 10]byte) }},
	{New: func() interface{} { return new([2 << 10]byte) }},
	{New: func() interface{} { return new([4 << 10]byte) }},
	{New: func() interface{} { return new([8 << 10]byte) }},
	{New: func() interface{} { return new([16 << 10]byte) }},
}

func http2getDataBufferChunk(size int64) []byte {