socket: avoid arg parsing in bsock_sendmsg_internal

* ext/socket/ancdata.c (bsock_sendmsg_internal): avoid arg parsing
  [ruby-core:71439] [Feature #11339]
  (rsock_bsock_sendmsg): make private, adjust for above
  (rsock_bsock_sendmsg_nonblock): ditto
* ext/socket/rubysocket.h: adjust prototypes
  (rsock_opt_false_p): remove
* ext/socket/basicsocket.c (rsock_init_basicsocket):
  define private methods
* ext/socket/lib/socket.rb (BasicSocket#sendmsg): new wrapper
  (BasicSocket#sendmsg_nonblock): ditto

target 0: a (ruby 2.3.0dev (2015-11-12 trunk 52550) [x86_64-linux])
target 1: b (ruby 2.3.0dev (2015-11-12 avoid-kwarg-capi 52550) [x86_64-linux]

-----------------------------------------------------------
sendmsg_nonblock

require 'socket'
nr = 1_000_000
i = 0
msg = '.'
buf = '.'
begin
  r, w = UNIXSocket.pair(:SEQPACKET)
  while i < nr
    i += 1
    w.sendmsg_nonblock(msg, exception: false)
    r.recv(1, 0, buf)
  end
ensure
  r.close
  w.close
end

-----------------------------------------------------------
raw data:

[["sendmsg_nonblock",
  [[1.875997293740511,
    1.8452614955604076,
    1.8449317328631878,
    1.8418389447033405,
    1.869386937469244],
   [1.5175109766423702,
    1.4987873211503029,
    1.4989623799920082,
    1.47918451577425,
    1.5017359890043736]]]]

Elapsed time: 16.775453245 (sec)
-----------------------------------------------------------
benchmark results:
minimum results in each 5 measurements.
Execution time (sec)
name             a       b
sendmsg_nonblock   1.842   1.479

Speedup ratio: compare with the result of `a' (greater is better)
name             b
sendmsg_nonblock   1.245

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52603 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 10 deletions

diff --git a/ext/socket/rubysocket.h b/ext/socket/rubysocket.h
index 652876cc89..2135ea4a0b 100644
--- a/ext/socket/rubysocket.h
+++ b/ext/socket/rubysocket.h
@@ -361,8 +361,10 @@ VALUE rsock_sock_listen(VALUE sock, VALUE log);
 VALUE rsock_sockopt_new(int family, int level, int optname, VALUE data);
 
 #if defined(HAVE_SENDMSG)
-VALUE rsock_bsock_sendmsg(int argc, VALUE *argv, VALUE sock);
-VALUE rsock_bsock_sendmsg_nonblock(int argc, VALUE *argv, VALUE sock);
+VALUE rsock_bsock_sendmsg(VALUE sock, VALUE data, VALUE flags,
+			  VALUE dest_sockaddr, VALUE controls);
+VALUE rsock_bsock_sendmsg_nonblock(VALUE sock, VALUE data, VALUE flags,
+			     VALUE dest_sockaddr, VALUE controls, VALUE ex);
 #else
 #define rsock_bsock_sendmsg rb_f_notimplement
 #define rsock_bsock_sendmsg_nonblock rb_f_notimplement
@@ -437,12 +439,4 @@ static inline void rsock_maybe_wait_fd(int fd) { }
 #  define MSG_DONTWAIT_RELIABLE 0
 #endif
 
-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;
-}
-
 #endif