If `nthreads / 2` (rounded up) DNS calls are outstanding,
queue more work of that kind instead of letting it take over
more positions in the thread pool, blocking other work
such as the (usually much faster) file system I/O or
user-scheduled work.
Fixes: https://github.com/nodejs/node/issues/8436
PR-URL: https://github.com/libuv/libuv/pull/1845
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Using -errno, -E**, and -pthread_function() can be
error prone, and breaks compatibility with some operating
systems that already negate errno's (e.g. Haiku).
This commit adds a UV__ERR() macro that ensures libuv
errors are negative.
Fixes: https://github.com/libuv/help/issues/39
PR-URL: https://github.com/libuv/libuv/pull/1687
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
