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Comparing EV/Makefile.PL (file contents):
Revision 1.23 by root, Thu Nov 22 04:52:24 2007 UTC vs.
Revision 1.29 by root, Sat Dec 22 05:47:52 2007 UTC

… …
38POSIX optionally offers support for a monotonic clock source. EV 38POSIX optionally offers support for a monotonic clock source. EV
39can take advantage of this clock source to detect time jumps 39can take advantage of this clock source to detect time jumps
40reliably. Unfortunately, some systems are bound to be broken, so you can 40reliably. Unfortunately, some systems are bound to be broken, so you can
41disable this here: you can completely disable the detection and use of 41disable this here: you can completely disable the detection and use of
42the monotonic clock by answering 'n' here. Support for this clock type 42the monotonic clock by answering 'n' here. Support for this clock type
43will otherwise be autodetected at both compile- and runtime. 43will otherwise be autodetected at both compile- and runtime. (this setting
44currently affects the use of nanosleep over select as well).
44 45
45EOF 46EOF
46 47
47$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/)); 48$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
48 49
… …
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
131$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/)); 132$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/));
132 133
… …
138Similarly to the epoll backend above, EV can take advantage of kqueue on 139Similarly to the epoll backend above, EV can take advantage of kqueue on
139many BSD systems. Support for kqueue will be detected at runtime, with a 140many BSD systems. Support for kqueue will be detected at runtime, with a
140safe fallback to other methods when it cannot be used. 141safe fallback to other methods when it cannot be used.
141 142
142Note that kqueue is broken on most operating systems, so it defaults to 143Note that kqueue is broken on most operating systems, so it defaults to
143'n' on most platforms that claim to support it. Here is what we know: 144'n' on everything but netbsd. Here is what we know:
144 145
145OS X: completely, utterly broken on at least <= 10.5. 146NetBSD: partially working in at least 3.1. Yeah! :)
146FreeBSD: broken on at least <= 6.2-STABLE, 147FreeBSD: broken on at least 6.2-STABLE,
147 sockets and pipes *might* work, ptys definitely don't. 148 sockets *likely* work, ptys definitely don't.
148NetBSD: reports indicate that it likely WORKS. Yeah! :)
149OpenBSD: reports indicate that it likely doesn't work 149OpenBSD: reports indicate that it likely doesn't work
150 (similar problems as on FreeBSD). 150 (similar problems as on FreeBSD).
151OS X: completely, utterly broken on at least < 10.5.
151 152
152EOF 153EOF
153 154
154my $can_kqueue = $^O =~ /netbsd/i && -e "/usr/include/sys/event.h"; 155my $can_kqueue = -e "/usr/include/sys/event.h";
155 156
156$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); 157$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
157 158
158print <<EOF; 159print <<EOF;
159 160
160*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 161*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
161 162
162 163
163Similarly to the kqueue backend above, EV can take advantage of the 164Similarly to the kqueue backend above, EV can take advantage of the
164solaris 10 port interface. Support for port will be detected at runtime, 165solaris 10 event port interface. Support for event ports will be detected
165with a safe fallback to other methods when it cannot be used. 166at runtime, with a safe fallback to other methods when it cannot be used.
166 167
167EOF 168EOF
168 169
169$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/)); 170$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
170 171
171print <<EOF; 172print <<EOF;
172 173
173*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 174*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
174 175
… …
182 183
183$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : ""; 184$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";
184 185
185$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS"; 186$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";
186 187
188
189print <<EOF;
190
191*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
192
193
194A backend of a different kind is the Linux inotify(7) interface, which can
195be used to speed up (and reduce resource consumption) of stat watchers. If
196you have it, it is usually a good idea to enable it.
197
198EOF
199
200my $can_inotify = -e "/usr/include/sys/inotify.h";
201
202$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
187 203
188print <<EOF; 204print <<EOF;
189 205
190*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 206*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
191 207
… …
201 SUFFIX => '.gz', 217 SUFFIX => '.gz',
202 }, 218 },
203 depend => { 219 depend => {
204 "EV.c" => "EV/EVAPI.h " 220 "EV.c" => "EV/EVAPI.h "
205 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " 221 . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c "
206 . "libev/event.h libev/event.c evdns.h evdns.c libev/ev_vars.h libev/ev_wrap.h", 222 . "libev/event.h libev/event.c libev/ev_vars.h libev/ev_wrap.h",
207 }, 223 },
208 INC => "-Ilibev", 224 INC => "-Ilibev",
209 DEFINE => "$DEFINE", 225 DEFINE => "$DEFINE",
210 NAME => "EV", 226 NAME => "EV",
211 LIBS => [$LIBS], 227 LIBS => [$LIBS],
… …
213 @anyevent, 229 @anyevent,
214 }, 230 },
215 VERSION_FROM => "EV.pm", 231 VERSION_FROM => "EV.pm",
216 PM => { 232 PM => {
217 'EV.pm' => '$(INST_LIBDIR)/EV.pm', 233 'EV.pm' => '$(INST_LIBDIR)/EV.pm',
218 'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm',
219 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', 234 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h',
220 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', 235 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm',
221 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', 236 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h',
222 }, 237 },
223); 238);

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