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Comparing EV/Makefile.PL (file contents):
Revision 1.22 by root, Sat Nov 17 01:41:33 2007 UTC vs.
Revision 1.42 by root, Sun Jul 19 01:36:34 2009 UTC

1use 5.006; 1use 5.006;
2 2
3use strict qw(vars subs);
3use Config; 4use Config;
4use ExtUtils::MakeMaker; 5use ExtUtils::MakeMaker;
5 6
6unless (-e "libev/ev_epoll.c") { 7unless (-e "libev/ev_epoll.c") {
7 print <<EOF; 8 print <<EOF;
… …
38POSIX optionally offers support for a monotonic clock source. EV 39POSIX optionally offers support for a monotonic clock source. EV
39can take advantage of this clock source to detect time jumps 40can take advantage of this clock source to detect time jumps
40reliably. Unfortunately, some systems are bound to be broken, so you can 41reliably. Unfortunately, some systems are bound to be broken, so you can
41disable this here: you can completely disable the detection and use of 42disable this here: you can completely disable the detection and use of
42the monotonic clock by answering 'n' here. Support for this clock type 43the monotonic clock by answering 'n' here. Support for this clock type
43will otherwise be autodetected at both compile- and runtime. 44will otherwise be autodetected at both compile- and runtime. (this setting
45currently affects the use of nanosleep over select as well).
44 46
45EOF 47EOF
46 48
47$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/)); 49my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
48 50
49print <<EOF; 51print <<EOF;
50 52
51*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 53*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
52 54
53 55
54POSIX optionally offers support for a (potentially) high-resolution 56POSIX optionally offers support for a (potentially) high-resolution
55realtime clock interface. In a good implementation, using it is faster 57realtime clock interface. In a good implementation, using it is faster
56than the normal method of using gettimeofday. Unfortunately, this option 58than the normal method of using gettimeofday. Unfortunately, this option
57is also bound to be broken on some systems, so you can disable use and 59is also bound to be broken on some systems, and current EV versions do not
58probing of this feature altogether here. Otherwise support for this clock 60actually call C<gettimeofday> very often, so ti defaults to no.
59type will be autodetected at compiletime.
60 61
61EOF 62EOF
62 63
63$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/)); 64$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[yY]/));
64 65
65print <<EOF; 66print <<EOF;
66 67
67*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 68*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
68 69
… …
116print <<EOF; 117print <<EOF;
117 118
118*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 119*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
119 120
120 121
121EV by default uses select, which makes it hard to write efficient servers, 122Select and poll make it hard to write efficient servers, especially if the
122especially if the number of active connections is much lower than the open 123number of active connections is much lower than the watched ones. GNU/Linux
123ones. GNU/Linux systems have a more scalable method called "epoll", which 124systems have a more scalable method called "epoll", which EV can use. For
124EV can use. For this to work, both your kernel and glibc have to support 125this to work, both your kernel and glibc have to support epoll, but if you
125epoll, but if you can compile it, the detection will be done at runtime, 126can compile it, the detection will be done at runtime, and EV will safely
126and EV will safely fall back to using select when epoll isn't available. 127fall back to using select when epoll isn't available. If unsure, accept
127If unsure, accept the default. 128the default.
128 129
129EOF 130EOF
130 131
132my $can_epoll = -e "/usr/include/sys/epoll.h";
133$can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL};
131$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/)); 134$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/));
132 135
133print <<EOF; 136print <<EOF;
134 137
135*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 138*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
136 139
137 140
138Similarly to the epoll backend above, EV can take advantage of kqueue 141Similarly to the epoll backend above, EV can take advantage of kqueue on
139on many BSD systems (it seems to be broken on Mac OS X though, but what 142many BSD systems. Support for kqueue will be detected at runtime, with a
140isn't broken on that shoddy platform... ah yes, the cash gushing by apple, 143safe fallback to other methods when it cannot be used.
141selling defective software works perfectly there). Support for kqueue will
142be detected at runtime, with a safe fallback to other methods when it
143cannot be used.
144 144
145EOF 145Note that kqueue is broken on most operating systems, so by default it
146won't be used on many platforms, but you can still create your own event
147loop with kqueue backend if you ask specifically for it.
146 148
149Here is what we know:
150
151NetBSD: partially working in at least 3.1. Yeah! :)
152FreeBSD: broken on at least 6.2-STABLE,
153 sockets *likely* work, ptys definitely don't.
154OpenBSD: reports indicate that it likely doesn't work
155 (similar problems as on FreeBSD).
156OS X: completely, utterly broken on at least < 10.5.
157
158EOF
159
160my $can_kqueue = -e "/usr/include/sys/event.h";
161$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE};
147$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/)); 162$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
148 163
149print <<EOF; 164print <<EOF;
150 165
151*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 166*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
152 167
153 168
154Similarly to the kqueue backend above, EV can take advantage of the 169Similarly to the kqueue backend above, EV can take advantage of the
155solaris 10 port interface. Support for port will be detected at runtime, 170solaris 10 event port interface. Support for event ports will be detected
156with a safe fallback to other methods when it cannot be used. 171at runtime, with a safe fallback to other methods when it cannot be used.
157 172
158EOF 173EOF
159 174
160$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/)); 175$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
161 176
162print <<EOF; 177print <<EOF;
163 178
164*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 179*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
165 180
166 181
167EV needs the functions pthread_atfork and clock_gettime. On most systems 182EV needs the functions pthread_atfork and clock_gettime. On most systems
168you need some special libraries for this (such as -lrt and -lpthread). You 183you need some special libraries for this (such as -lrt and -lpthread). You
169can specify additional libraries to provide these calls now, or accept the 184can specify additional libraries to provide these calls (and any other
170default. 185required by EV) now, or accept the default.
171 186
172EOF 187EOF
173 188
189my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : "";
190my $librt = $^O =~ /linux/i ? "-lpthread" : "-lpthread -lrt";
174$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt"; 191my $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "$librt $solaris_libs";
175 192
193
194print <<EOF;
195
196*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
197
198
199A backend of a different kind is the Linux inotify(7) interface, which can
200be used to speed up (and reduce resource consumption) of stat watchers. If
201you have the include file and libc support for it, it is usually a good
202idea to enable it, as kernel availability is detected at runtime.
203
204EOF
205
206my $can_inotify = -e "/usr/include/sys/inotify.h";
207$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY};
208$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
209
210print <<EOF;
211
212*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
213
214
215Another useful bit of functionality is the Linux eventfd, which is useful
216for faster signal handling (don't care) and intra-thread communications
217(more relevant). Kernel support for this will be probed at runtime, but
218your libc must contain the necessary wrapper. Glibc 2.7 and later should
219have this wrapper.
220
221EOF
222
223my $can_eventfd = -e "/usr/include/sys/eventfd.h";
224$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD};
225$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/));
226
227print <<EOF;
228
229*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
230
231
232Another sometimes useful bit of functionality is the Linux signalfd, which
233is useful for faster signal handling (don't care). Kernel support for
234this will be probed at runtime, but your libc must contain the necessary
235wrapper and include files. Glibc 2.9 and later should have this wrapper.
236
237EOF
238
239my $can_signalfd = -e "/usr/include/sys/signalfd.h";
240$can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD};
241$DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/));
176 242
177print <<EOF; 243print <<EOF;
178 244
179*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 245*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
180 246
… …
190 SUFFIX => '.gz', 256 SUFFIX => '.gz',
191 }, 257 },
192 depend => { 258 depend => {
193 "EV.c" => "EV/EVAPI.h " 259 "EV.c" => "EV/EVAPI.h "
194 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " 260 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
195 . "libev/event.h libev/event.c evdns.h evdns.c libev/ev_vars.h libev/ev_wrap.h", 261 . "libev/ev_vars.h libev/ev_wrap.h",
196 }, 262 },
197 INC => "-Ilibev", 263 INC => "-Ilibev",
198 DEFINE => "$DEFINE", 264 DEFINE => "$DEFINE",
199 NAME => "EV", 265 NAME => "EV",
200 LIBS => [$LIBS], 266 LIBS => [$LIBS],
201 PREREQ_PM => { 267 PREREQ_PM => {
202 @anyevent, 268 @anyevent,
269 "common::sense" => 0,
203 }, 270 },
204 VERSION_FROM => "EV.pm", 271 VERSION_FROM => "EV.pm",
205 PM => { 272 PM => {
206 'EV.pm' => '$(INST_LIBDIR)/EV.pm', 273 'EV.pm' => '$(INST_LIBDIR)/EV.pm',
207 'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm',
208 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', 274 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
209 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', 275 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
210 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', 276 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
277 'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod',
211 }, 278 },
279 MAN3PODS => {
280 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)',
281 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)',
282 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)',
283 },
212); 284);
213 285
214 286

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