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38 | POSIX optionally offers support for a monotonic clock source. EV |
38 | POSIX optionally offers support for a monotonic clock source. EV |
39 | can take advantage of this clock source to detect time jumps |
39 | can take advantage of this clock source to detect time jumps |
40 | reliably. Unfortunately, some systems are bound to be broken, so you can |
40 | reliably. Unfortunately, some systems are bound to be broken, so you can |
41 | disable this here: you can completely disable the detection and use of |
41 | disable this here: you can completely disable the detection and use of |
42 | the monotonic clock by answering 'n' here. Support for this clock type |
42 | the monotonic clock by answering 'n' here. Support for this clock type |
43 | will otherwise be autodetected at both compile- and runtime. |
43 | will otherwise be autodetected at both compile- and runtime. (this setting |
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44 | currently affects the use of nanosleep over select as well). |
44 | |
45 | |
45 | EOF |
46 | EOF |
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 | |
… | |
… | |
137 | |
138 | |
138 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
139 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
139 | many BSD systems. Support for kqueue will be detected at runtime, with a |
140 | many BSD systems. Support for kqueue will be detected at runtime, with a |
140 | safe fallback to other methods when it cannot be used. |
141 | safe fallback to other methods when it cannot be used. |
141 | |
142 | |
142 | Note that kqueue is broken on most operating systems, so it defaults to |
143 | Note that kqueue is broken on most operating systems, so by default it |
143 | 'n' on everything but netbsd. Here is what we know: |
144 | won't be used on many platforms, but you can still create your own event |
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145 | loop with qkueue backend. |
144 | |
146 | |
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147 | Here is what we know: |
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148 | |
145 | NetBSD: working in at least 3.1. Yeah! :) |
149 | NetBSD: partially working in at least 3.1. Yeah! :) |
146 | FreeBSD: broken on at least 6.2-STABLE, |
150 | FreeBSD: broken on at least 6.2-STABLE, |
147 | sockets and pipes *might* work, ptys definitely don't. |
151 | sockets *likely* work, ptys definitely don't. |
148 | OpenBSD: reports indicate that it likely doesn't work |
152 | OpenBSD: reports indicate that it likely doesn't work |
149 | (similar problems as on FreeBSD). |
153 | (similar problems as on FreeBSD). |
150 | OS X: completely, utterly broken on at least <= 10.5. |
154 | OS X: completely, utterly broken on at least < 10.5. |
151 | |
155 | |
152 | EOF |
156 | EOF |
153 | |
157 | |
154 | my $can_kqueue = $^O =~ /netbsd/i && -e "/usr/include/sys/event.h"; |
158 | my $can_kqueue = -e "/usr/include/sys/event.h"; |
155 | |
159 | |
156 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
160 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
157 | |
161 | |
158 | print <<EOF; |
162 | print <<EOF; |
159 | |
163 | |
… | |
… | |
197 | EOF |
201 | EOF |
198 | |
202 | |
199 | my $can_inotify = -e "/usr/include/sys/inotify.h"; |
203 | my $can_inotify = -e "/usr/include/sys/inotify.h"; |
200 | |
204 | |
201 | $DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/)); |
205 | $DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/)); |
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206 | |
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207 | print <<EOF; |
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208 | |
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209 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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210 | |
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211 | |
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212 | Another useful bit of functionality is the Linux eventfd, which is useful |
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213 | for faster signal handling (don't care) and intra-thread communications |
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214 | (more relevant). Kernel support for this will be probed at runtime, but |
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215 | your libc must contain the necessary wrapper. Glibc 2.7 and later should |
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216 | have this wrapper. |
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217 | |
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218 | EOF |
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219 | |
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220 | $DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", (-e "/usr/include/sys/eventfd.h") || $ENV{EV_EVENTFD} ? "y" : "n") =~ /[yY]/)); |
202 | |
221 | |
203 | print <<EOF; |
222 | print <<EOF; |
204 | |
223 | |
205 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
224 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
206 | |
225 | |
… | |
… | |
216 | SUFFIX => '.gz', |
235 | SUFFIX => '.gz', |
217 | }, |
236 | }, |
218 | depend => { |
237 | depend => { |
219 | "EV.c" => "EV/EVAPI.h " |
238 | "EV.c" => "EV/EVAPI.h " |
220 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
239 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
221 | . "libev/event.h libev/event.c libev/ev_vars.h libev/ev_wrap.h", |
240 | . "libev/ev_vars.h libev/ev_wrap.h", |
222 | }, |
241 | }, |
223 | INC => "-Ilibev", |
242 | INC => "-Ilibev", |
224 | DEFINE => "$DEFINE", |
243 | DEFINE => "$DEFINE", |
225 | NAME => "EV", |
244 | NAME => "EV", |
226 | LIBS => [$LIBS], |
245 | LIBS => [$LIBS], |
… | |
… | |
231 | PM => { |
250 | PM => { |
232 | 'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
251 | 'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
233 | 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
252 | 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
234 | 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
253 | 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
235 | 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
254 | 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
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255 | 'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod', |
236 | }, |
256 | }, |
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257 | MAN3PODS => { |
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258 | 'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)', |
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259 | 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
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260 | 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
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261 | }, |
237 | ); |
262 | ); |
238 | |
263 | |
239 | |
264 | |