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- Use accept4 to speed up incoming TCP (and TLS) connections,

Browse source 
available on Linux and FreeBSD.


git-svn-id: file:///svn/unbound/trunk@4686 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2018-05-23 13:55:09 +00:00
parent 50b6dc4b81
commit 261bf354b7
5 changed files with 16 additions and 2 deletions
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3
config.h.in
View file

@ -30,6 +30,9 @@
internal symbols */
#undef EXPORT_ALL_SYMBOLS
/* Define to 1 if you have the `accept4' function. */
#undef HAVE_ACCEPT4
/* Define to 1 if you have the `arc4random' function. */
#undef HAVE_ARC4RANDOM

2
configure vendored
View file

@ -19702,7 +19702,7 @@ if test "$ac_res" != no; then :
fi
for ac_func in tzset sigprocmask fcntl getpwnam endpwent getrlimit setrlimit setsid chroot kill chown sleep usleep random srandom recvmsg sendmsg writev socketpair glob initgroups strftime localtime_r setusercontext _beginthreadex endservent endprotoent fsync shmget
for ac_func in tzset sigprocmask fcntl getpwnam endpwent getrlimit setrlimit setsid chroot kill chown sleep usleep random srandom recvmsg sendmsg writev socketpair glob initgroups strftime localtime_r setusercontext _beginthreadex endservent endprotoent fsync shmget accept4
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

2
configure.ac
View file

@ -1319,7 +1319,7 @@ AC_INCLUDES_DEFAULT
#endif
])
AC_SEARCH_LIBS([setusercontext], [util])
AC_CHECK_FUNCS([tzset sigprocmask fcntl getpwnam endpwent getrlimit setrlimit setsid chroot kill chown sleep usleep random srandom recvmsg sendmsg writev socketpair glob initgroups strftime localtime_r setusercontext _beginthreadex endservent endprotoent fsync shmget])
AC_CHECK_FUNCS([tzset sigprocmask fcntl getpwnam endpwent getrlimit setrlimit setsid chroot kill chown sleep usleep random srandom recvmsg sendmsg writev socketpair glob initgroups strftime localtime_r setusercontext _beginthreadex endservent endprotoent fsync shmget accept4])
AC_CHECK_FUNCS([setresuid],,[AC_CHECK_FUNCS([setreuid])])
AC_CHECK_FUNCS([setresgid],,[AC_CHECK_FUNCS([setregid])])

4
doc/Changelog
View file

@ -1,3 +1,7 @@
23 May 2018: Wouter
- Use accept4 to speed up incoming TCP (and TLS) connections,
available on Linux and FreeBSD.
17 May 2018: Ralph
- Qname minimisation default changed to yes.

7
util/netevent.c
View file

@ -764,7 +764,12 @@ int comm_point_perform_accept(struct comm_point* c,
{
int new_fd;
*addrlen = (socklen_t)sizeof(*addr);
#ifndef HAVE_ACCEPT4
new_fd = accept(c->fd, (struct sockaddr*)addr, addrlen);
#else
/* SOCK_NONBLOCK saves extra calls to fcntl for the same result */
new_fd = accept4(c->fd, (struct sockaddr*)addr, addrlen, SOCK_NONBLOCK);
#endif
if(new_fd == -1) {
#ifndef USE_WINSOCK
/* EINTR is signal interrupt. others are closed connection. */
@ -827,7 +832,9 @@ int comm_point_perform_accept(struct comm_point* c,
#endif
return -1;
}
#ifndef HAVE_ACCEPT4
fd_set_nonblock(new_fd);
#endif
return new_fd;
}