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ruby/ext/socket
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normal a02a3f4649 socket: allow explicit buffer for recv and recv_nonblock 
This reduces GC overhead and makes the API more consistent
with IO#read and IO#read_nonblock.

* ext/socket/basicsocket.c (bsock_recv): document outbuf
* ext/socket/unixsocket.c (unix_recvfrom): ditto
* ext/socket/init.c (rsock_strbuf, recvfrom_locktmp): new functions
  (rsock_s_recvfrom): support destination buffer as 3rd arg
  (rsock_s_recvfrom_nonblock): ditto
* string.c (rb_str_locktmp_ensure): export for internal ext
* test/socket/test_nonblock.rb: test recv_nonblock
* test/socket/test_unix.rb: test recv
  [ruby-core:69543] [Feature #11242]

Benchmark results:

             user     system      total        real
alloc    0.130000   0.280000   0.410000 (  0.420656)
extbuf   0.100000   0.220000   0.320000 (  0.318708)

-------------------8<--------------------
require 'socket'
require 'benchmark'
nr = 100000
msg = ' ' * 16384
size = msg.bytesize
buf = ' ' * size
UNIXSocket.pair(:DGRAM) do |a, b|
  Benchmark.bmbm do |x|
    x.report('alloc') do
      nr.times do
        b.send(msg, 0)
        a.recv(size, 0)
      end
    end

    x.report('extbuf') do
      nr.times do
        b.send(msg, 0)
        a.recv(size, 0, buf)
      end
    end
  end
end

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50912 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-06-15 20:02:43 +00:00
..
lib stdlib: use IO#wait_*able instead of IO.select when possible 2015-05-06 20:30:43 +00:00
.document * ext/socket/.document: Add ifaddr.c. 2013-05-14 14:48:00 +00:00
addrinfo.h * ext/**/*.[ch]: removed trailing spaces. 2010-04-22 08:04:13 +00:00
ancdata.c socket: allow exception-free nonblocking sendmsg/recvmsg 2015-06-15 19:38:49 +00:00
basicsocket.c socket: allow explicit buffer for recv and recv_nonblock 2015-06-15 20:02:43 +00:00
constants.c use frozen string of symbols 2015-04-14 03:31:28 +00:00
depend Update dependencies. 2014-12-19 13:34:54 +00:00
extconf.rb * ext/socket/extconf.rb: Solaris 11 has struct tcp_info.tcpi_ca_state, 2015-03-25 08:10:14 +00:00
getaddrinfo.c getaddrinfo.c: GHOST vulnerability check 2015-02-08 04:04:32 +00:00
getnameinfo.c {getaddrinfo,getnameinfo}.c: fix for old platforms 2013-05-03 04:35:37 +00:00
ifaddr.c ifaddr.c: wrapper object before alloc 2015-05-16 12:57:17 +00:00
init.c socket: allow explicit buffer for recv and recv_nonblock 2015-06-15 20:02:43 +00:00
ipsocket.c ipsocket.c: fix merge miss 2015-04-30 07:45:36 +00:00
mkconstants.rb * ext/socket/mkconstants.rb: More constants 2014-05-23 20:54:40 +00:00
option.c * ext/socket/extconf.rb: Solaris 11 has struct tcp_info.tcpi_ca_state, 2015-03-25 08:10:14 +00:00
raddrinfo.c raddrinfo.c: suppress a warning 2015-06-14 23:40:51 +00:00
rubysocket.h socket: allow exception-free nonblocking sendmsg/recvmsg 2015-06-15 19:38:49 +00:00
socket.c socket: allow exception-free nonblocking sendmsg/recvmsg 2015-06-15 19:38:49 +00:00
sockport.h * ext/socket: Bypass getaddrinfo() if node and serv are numeric. 2014-02-19 10:37:43 +00:00
sockssocket.c * ext/socket/basicsocket.c, ext/socket/sockssocket.c: 2014-12-07 10:40:27 +00:00
tcpserver.c accept_nonblock supports "exception: false" 2015-03-12 03:03:04 +00:00
tcpsocket.c socket: ai_addrlen is socklen_t 2013-02-15 07:54:38 +00:00
udpsocket.c socket: allow exception-free nonblocking sendmsg/recvmsg 2015-06-15 19:38:49 +00:00
unixserver.c accept_nonblock supports "exception: false" 2015-03-12 03:03:04 +00:00
unixsocket.c socket: allow explicit buffer for recv and recv_nonblock 2015-06-15 20:02:43 +00:00