--- cvsroot/EV/Makefile.PL	2007/11/01 09:05:32	1.11
+++ cvsroot/EV/Makefile.PL	2008/04/15 04:41:57	1.33
@@ -3,7 +3,6 @@
 use Config;
 use ExtUtils::MakeMaker;
 
-
 unless (-e "libev/ev_epoll.c") {
    print <<EOF;
 
@@ -19,9 +18,9 @@
 
 print <<EOF;
 
-
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
+
 Welcome to EV configuration. If you are in a hurry, just press return here
 and hope for the best. The defaults should usually do.
 
@@ -33,29 +32,26 @@
 
 print <<EOF;
 
-
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
-POSIX optionally offers support for a monotonic clock source. EV can
-take advantage of this clock source to detect time jumps reliably. This
-will usually slow down EV a tiny amount, but this is usually
-well-invested. Unfortunately, some systems are bound to be broken, so
-you can disable this here. Whatever your reasons, you can completely
-disable the detection and use of this monotonic clock by answering 'n'
-here. Support for this clock type will otherwise be autodetected at both
-compile- and runtime.
+
+POSIX optionally offers support for a monotonic clock source. EV
+can take advantage of this clock source to detect time jumps
+reliably. Unfortunately, some systems are bound to be broken, so you can
+disable this here: you can completely disable the detection and use of
+the monotonic clock by answering 'n' here. Support for this clock type
+will otherwise be autodetected at both compile- and runtime. (this setting
+currently affects the use of nanosleep over select as well).
 
 EOF
 
-if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) {
-   $DEFINE .= " -DEV_USE_MONOTONIC";
-}
+$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
 
 print <<EOF;
 
-
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
+
 POSIX optionally offers support for a (potentially) high-resolution
 realtime clock interface. In a good implementation, using it is faster
 than the normal method of using gettimeofday. Unfortunately, this option
@@ -65,52 +61,172 @@
 
 EOF
 
-if (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") !~ /[yY]/) {
-   $DEFINE .= " -DEV_USE_REALTIME=0";
-}
+$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/));
 
 print <<EOF;
 
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+
+Another useful bit of functionality is the Linux eventfd, which is useful
+for faster signal handling (don't care) and intra-thread communications
+(mostly useful for embedding). Kernel support for this will be probed at
+runtime, but your libc must contain the necessary wrapper. Glibc 2.7 and
+later should have this wrapper.
+
+EOF
+
+$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", (-e "/usr/include/sys/eventfd.h") || $ENV{EV_EVENTFD} ? "y" : "n") =~ /[yY]/));
+
+print <<EOF;
 
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
-EV needs the functions pthread_atfork and clock_gettime. On most systems
-you need some special libraries for this (such as -lrt and -lpthread). You can
-specify additional libraries to provide these calls now, or accept the default.
+
+EV can use various backends with various portability issue. The select
+backend is the most portable and makes for a good fallback, but it can be
+limited to a low number of file descriptors and/or might not compile. If
+you have problems with compiling ev_select.c, you might try to play around
+with disabling it here, or forcing it to use the fd_set provided by your
+OS, via the next question. I highly recommend keeping it in.
 
 EOF
 
-$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt";
+if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_SELECT=1";
+
+   print <<EOF;
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
 
+The select backend can operate in two modes. One uses the system-provided
+fd_set and is usually limited to 1024 file descriptors (64 on windows),
+the other requires your header files to define NFDBITS and declare a
+suitable fd_mask type. If you run into problems compiling ev_select.c, you
+can try forcing the use of the system fd_set here.
+
+EOF
+
+   if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
+      $DEFINE .= " -DEV_SELECT_USE_FD_SET";
+   } 
+} else {
+   $DEFINE .= " -DEV_USE_SELECT=0";
+} 
 
 print <<EOF;
 
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+
+The second very portable backend is poll(2). It does not exist on windows
+and various versions of Mac OS X (and on the other versions it simply
+doesn't work), but works basically everywhere else. It is recommended to use
+the default here unless you run into compile problems in ev_poll.c.
+
+EOF
+
+$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));
+
+print <<EOF;
 
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
-EV needs the functions pthread_atfork and clock_gettime. On most systems
-you need some special libraries for this (such as -lrt and -lpthread). You can
-specify additional libraries to provide these calls now, or accept the default.
+
+Select and poll make it hard to write efficient servers, especially if the
+number of active connections is much lower than the watched ones. GNU/Linux
+systems have a more scalable method called "epoll", which EV can use. For
+this to work, both your kernel and glibc have to support epoll, but if you
+can compile it, the detection will be done at runtime, and EV will safely
+fall back to using select when epoll isn't available. If unsure, accept
+the default.
 
 EOF
 
-if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) {
-   $DEFINE .= " -DEV_USE_EPOLL";
-} 
+$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/));
 
 print <<EOF;
 
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+
+Similarly to the epoll backend above, EV can take advantage of kqueue on
+many BSD systems. Support for kqueue will be detected at runtime, with a
+safe fallback to other methods when it cannot be used.
+
+Note that kqueue is broken on most operating systems, so by default it
+won't be used on many platforms, but you can still create your own event
+loop with qkueue backend.
+
+Here is what we know:
+
+NetBSD:  partially working in at least 3.1. Yeah! :)
+FreeBSD: broken on at least 6.2-STABLE,
+         sockets *likely* work, ptys definitely don't.
+OpenBSD: reports indicate that it likely doesn't work
+         (similar problems as on FreeBSD).
+OS X:    completely, utterly broken on at least < 10.5.
+
+EOF
+
+my $can_kqueue = -e "/usr/include/sys/event.h";
+
+$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
+
+print <<EOF;
 
 *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
 
+
+Similarly to the kqueue backend above, EV can take advantage of the
+solaris 10 event port interface. Support for event ports will be detected
+at runtime, with a safe fallback to other methods when it cannot be used.
+
+EOF
+
+$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
+
+print <<EOF;
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+
+EV needs the functions pthread_atfork and clock_gettime. On most systems
+you need some special libraries for this (such as -lrt and -lpthread). You
+can specify additional libraries to provide these calls (and any other
+required by EV) now, or accept the default.
+
 EOF
 
-#$ENV{CC} = $Config{cc};
-#$ENV{CFLAGS} = join " ", map $Config{$_}, qw(inc optimize ccflags cccdlflags);
-#system "cd libevent && ./configure --disable-shared --enable-static --disable-maintainer-mode"
-#   and die "configure failed.";
+$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";
 
-#$LIBS = qx<cd libevent && make printlibs>;
+$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";
+
+
+print <<EOF;
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+
+A backend of a different kind is the Linux inotify(7) interface, which can
+be used to speed up (and reduce resource consumption) of stat watchers. If
+you have it, it is usually a good idea to enable it.
+
+EOF
+
+my $can_inotify = -e "/usr/include/sys/inotify.h";
+
+$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
+
+print <<EOF;
+
+*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
+
+
+EOF
+
+my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
 
 WriteMakefile(
     dist	=> {
@@ -119,17 +235,20 @@
 	            SUFFIX	=> '.gz',
 	           },
     depend => {
-       "EV.c" => "EV/EVAPI.h libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c",
+       "EV.c" => "EV/EVAPI.h "
+               . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
+               . "libev/ev_vars.h libev/ev_wrap.h",
     },
     INC       => "-Ilibev",
     DEFINE    => "$DEFINE",
     NAME => "EV",
     LIBS => [$LIBS],
+    PREREQ_PM => {
+       @anyevent,
+    },
     VERSION_FROM => "EV.pm",
     PM           => {
     		    'EV.pm'		=> '$(INST_LIBDIR)/EV.pm',
-    		    'EV/AnyEvent.pm'	=> '$(INST_LIBDIR)/EV/AnyEvent.pm',
-                    #'EV/DNS.pm'		=> '$(INST_LIBDIR)/EV/DNS.pm',
     		    'EV/EVAPI.h'	=> '$(INST_LIBDIR)/EV/EVAPI.h',
     		    'EV/MakeMaker.pm'	=> '$(INST_LIBDIR)/EV/MakeMaker.pm',
     		    'libev/ev.h'	=> '$(INST_LIBDIR)/EV/ev.h',