CE_SEND_FLAG_GATHER
if (flags & CE_SEND_FLAG_GATHER)
if (!(flags & CE_SEND_FLAG_GATHER))
if (flags & CE_SEND_FLAG_GATHER)
if (flags & CE_SEND_FLAG_GATHER)
if (!(flags & CE_SEND_FLAG_GATHER)) {
CE_SEND_FLAG_GATHER);
CE_SEND_FLAG_GATHER);