* Added experimental code to set the socket limit at runtime.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@12803 54d463be-8e91-2dee-dedb-b68131a5f0ec

Changelog-Trunk.txt

@@ -3,6 +3,8 @@ Date	Added
 AS OF SVN REV. 5091, WE ARE NOW USING TRUNK.  ALL UNTESTED BUGFIXES/FEATURES GO INTO TRUNK.
 IF YOU HAVE A WORKING AND TESTED BUGFIX PUT IT INTO STABLE AS WELL AS TRUNK.
 
+2008/06/10
+	* Added experimental code to set the socket limit at runtime. [FlavioJS]
 2008/06/09
 	* Fixed SN_SHARPSHOOTING doing 100% atk less damage than it should, bugreport:1654
 	* Fixed Active Guild skills not working when WoE is OFF, follow up on r12770, bugreport:1653 and bugreport:1637

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 12729 .
+# From configure.in Revision: 12803 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61.
 #
@@ -3986,6 +3986,97 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 #
 
 
+#
+# setrlimit - used to set the socket limit
+#
+{ echo "$as_me:$LINENO: checking for setrlimit" >&5
+echo $ECHO_N "checking for setrlimit... $ECHO_C" >&6; }
+if test "${ac_cv_func_setrlimit+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define setrlimit to an innocuous variant, in case <limits.h> declares setrlimit.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define setrlimit innocuous_setrlimit
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char setrlimit (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef setrlimit
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char setrlimit ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_setrlimit || defined __stub___setrlimit
+choke me
+#endif
+
+int
+main ()
+{
+return setrlimit ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  ac_cv_func_setrlimit=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_cv_func_setrlimit=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_func_setrlimit" >&5
+echo "${ECHO_T}$ac_cv_func_setrlimit" >&6; }
+if test $ac_cv_func_setrlimit = yes; then
+  CFLAGS="$CFLAGS -DHAVE_SETRLIMIT"
+fi
+
+
+
+
 #
 # Memory manager
 #

configure.in

@@ -291,6 +291,13 @@ AC_COMPILE_IFELSE(
 #
 
 
+#
+# setrlimit - used to set the socket limit
+#
+AC_CHECK_FUNC([setrlimit],[CFLAGS="$CFLAGS -DHAVE_SETRLIMIT"])
+
+
+
 #
 # Memory manager
 #

src/common/socket.c

@@ -32,6 +32,10 @@
 	#ifndef SIOCGIFCONF
 	#include <sys/sockio.h> // SIOCGIFCONF on Solaris, maybe others? [Shinomori]
 	#endif
+
+	#ifdef HAVE_SETRLIMIT
+	#include <sys/resource.h>
+	#endif
 #endif
 
 /////////////////////////////////////////////////////////////////////
@@ -1200,6 +1204,23 @@ void socket_init(void)
 			return;
 		}
 	}
+#elif defined(HAVE_SETRLIMIT)
+	{// set socket limit to FD_SETSIZE
+		struct rlimit rlp;
+		if( 0 == getrlimit(RLIMIT_NOFILE, &rlp) )
+		{
+			rlp.rlim_cur = FD_SETSIZE;
+			if( 0 != setrlimit(RLIMIT_NOFILE, &rlp) )
+			{// failed, try setting the maximum too (permission to change system limits is required)
+				rlp.rlim_max = FD_SETSIZE;
+				if( 0 != setrlimit(RLIMIT_NOFILE, &rlp) )
+				{// failed
+					getrlimit(RLIMIT_NOFILE, &rlp);
+					ShowWarning("socket_init: %s - failed to set socket limit to %d (current limit %d).\n", strerror(errno), FD_SETSIZE, (int)rlp.rlim_cur);
+				}
+			}
+		}
+	}
 #endif
 
 	// Get initial local ips