Joel Cunningham d4c8a1ac78 netconn: switch gethostbyname to use tcpip_send_msg_wait_sem (task #14523) ...

This switches netconn_gethostbyname to use tcpip_send_msg_wait_sem to
take advantage of core locking support when enabled.

tcpip_send_msg_wait_sem handles blocking for the non-core locking case,
so we can remove the manual blocking in netconn_gethostbyname. For the
core locking case, we need to block if waiting on DNS callback. To
achieve this, we unlock the core and wait in lwip_netconn_do_gethostbyname.
This is the similar approach that netconn_write takes when it needs to
block to continue the write (see lwip_netconn_do_write)

This improves performance in the core locking case and is no change
for the non-core locking case

2017-06-20 17:52:28 -05:00

172 KiB

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