path: root/ext/socket/rubysocket.h
diff options
authornormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-06-15 19:38:49 +0000
committernormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-06-15 19:38:49 +0000
commitb9a91334c50e5a0b8ea0a4b571cd3011228cba6c (patch)
tree2c2943128de42db8c8eba898a1c402c7d8bf8ca1 /ext/socket/rubysocket.h
parent91af3e00d1bdf7aab0d8f413ebbc5494d017f08c (diff)
socket: allow exception-free nonblocking sendmsg/recvmsg
As documented before, exceptions are expensive and IO::Wait*able are too common in socket applications to be the exceptional case. Datagram sockets deserve the same API which stream sockets are allowed with read_nonblock and write_nonblock. Note: this does not offer a performance advantage under optimal conditions when both ends are equally matched in speed, but it it does make debug output cleaner by avoiding exceptions whenever the receiver slows down. * ext/socket/ancdata.c (bsock_sendmsg_internal, bsock_recvmsg_internal): support "exception: false" kwarg * ext/socket/init.c (rsock_s_recvfrom_nonblock): ditto * ext/socket/init.c (rsock_s_recvfrom_nonblock): use rsock_opt_false_p * ext/socket/socket.c (sock_connect_nonblock): ditto * ext/socket/rubysocket.h (rsock_opt_false_p): new function * ext/socket/basicsocket.c (bsock_recv_nonblock): update rdoc * ext/socket/udpsocket.c (udp_recvfrom_nonblock): ditto * test/socket/test_nonblock.rb: new tests [ruby-core:69542] [Feature #11229] git-svn-id: svn+ssh:// b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/socket/rubysocket.h')
1 files changed, 8 insertions, 0 deletions
diff --git a/ext/socket/rubysocket.h b/ext/socket/rubysocket.h
index 359d28e..d03b1c5 100644
--- a/ext/socket/rubysocket.h
+++ b/ext/socket/rubysocket.h
@@ -423,4 +423,12 @@ static inline void rsock_maybe_wait_fd(int fd) { }
+static inline int
+rsock_opt_false_p(VALUE opt, VALUE sym)
+ if (!NIL_P(opt) && Qfalse == rb_hash_lookup2(opt, sym, Qundef))
+ return 1;
+ return 0;