current configure.in,1.197,1.198

Update of /cvsroot/ijbswa/current
In directory sfp-cvs-1.v30.ch3.sourceforge.com:/tmp/cvs-serv15232

Modified Files:
	configure.in 
Log Message:
Add configure argument to optimistically redefine FD_SETSIZE

... with the intent to change the maximum number of client
connections Privoxy can handle. Only works with some libcs.

Sponsored by: Robert Klemme


Index: configure.in
===================================================================
RCS file: /cvsroot/ijbswa/current/configure.in,v
retrieving revision 1.197
retrieving revision 1.198
diff -C2 -d -r1.197 -r1.198
*** configure.in	8 May 2016 10:44:39 -0000	1.197
--- configure.in	22 May 2016 12:42:49 -0000	1.198
***************
*** 466,469 ****
--- 466,489 ----
  
  dnl =================================================================
+ dnl On most platforms select() does not support fd numbers above
+ dnl FD_SETSIZE, as a result Privoxy can't handle more than
+ dnl approximately FD_SETSIZE/2 client connections.
+ dnl On some platforms the value can be changed at compile time,
+ dnl on others it's hardcoded and requires recompilation of the OS.
+ dnl =================================================================
+ AC_ARG_WITH(fdsetsize,
+  [  --with-fdsetsize=n  Optimistically redefine FD_SETSIZE with the intend to change the number of connections Privoxy can handle. Dangerous if the platform doesn't support this.],
+  [
+    if test "x$withval" != "xyes"; then
+      AC_DEFINE_UNQUOTED(FD_SETSIZE,$with_fdsetsize,[Relevant for select(). Not honoured by all OS.])
+      echo "Redefining FD_SETSIZE to $with_fdsetsize."
+      AC_MSG_WARN(On platforms that don't support FD_SETSIZE redefinition it may cause memory corruption.)
+    else
+      AC_MSG_ERROR(--with-fdsetsize used without value)
+    fi
+    ]
+ )
+ 
+ dnl =================================================================
  dnl Support for thread-safe versions of gethostbyaddr, gethostbyname,
  dnl gmtime and localtime


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