std.Io.Threaded: optimize batchAwaitConcurrent for net_receive
Eagerly receive messages with MSG_DONTWAIT before polling. This makes
the DNS resolution use case end up doing:
recvmsg (EAGAIN)
poll
recvmsg (success)
recvmsg (success)
rather than:
poll
recvmsg (success)
poll
recvmsg (success)
ebb2752c07Andrew Kelley committed on 3/6/2026, 12:34:16 AMparenta14d5e1