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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 | |
… | |
… | |
59 | type will be autodetected at compiletime. |
60 | type will be autodetected at compiletime. |
60 | |
61 | |
61 | EOF |
62 | EOF |
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)?", "y") =~ /[yY]/)); |
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65 | |
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66 | print <<EOF; |
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67 | |
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68 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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69 | |
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70 | |
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71 | Another useful bit of functionality is the Linux eventfd, which is useful |
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72 | for faster signal handling (don't care) and intra-thread communications |
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73 | (mostly useful for embedding). Kernel support for this will be probed at |
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74 | runtime, but your libc must contain the necessary wrapper. Glibc 2.7 and |
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75 | later should have this wrapper. |
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76 | |
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77 | EOF |
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78 | |
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79 | $DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", (-e "/usr/include/sys/eventfd.h") || $ENV{EV_EVENTFD} ? "y" : "n") =~ /[yY]/)); |
64 | |
80 | |
65 | print <<EOF; |
81 | print <<EOF; |
66 | |
82 | |
67 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
83 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
68 | |
84 | |
… | |
… | |
137 | |
153 | |
138 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
154 | 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 |
155 | many BSD systems. Support for kqueue will be detected at runtime, with a |
140 | safe fallback to other methods when it cannot be used. |
156 | safe fallback to other methods when it cannot be used. |
141 | |
157 | |
142 | Note that kqueue is broken on most operating systems, so it defaults to |
158 | Note that kqueue is broken on most operating systems, so by default it |
143 | 'n' on everything but netbsd. Here is what we know: |
159 | won't be used on many platforms, but you can still create your own event |
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160 | loop with qkueue backend. |
144 | |
161 | |
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162 | Here is what we know: |
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163 | |
145 | NetBSD: working in at least 3.1. Yeah! :) |
164 | NetBSD: partially working in at least 3.1. Yeah! :) |
146 | FreeBSD: broken on at least 6.2-STABLE, |
165 | FreeBSD: broken on at least 6.2-STABLE, |
147 | sockets and pipes *might* work, ptys definitely don't. |
166 | sockets *likely* work, ptys definitely don't. |
148 | OpenBSD: reports indicate that it likely doesn't work |
167 | OpenBSD: reports indicate that it likely doesn't work |
149 | (similar problems as on FreeBSD). |
168 | (similar problems as on FreeBSD). |
150 | OS X: completely, utterly broken on at least <= 10.5. |
169 | OS X: completely, utterly broken on at least < 10.5. |
151 | |
170 | |
152 | EOF |
171 | EOF |
153 | |
172 | |
154 | my $can_kqueue = $^O =~ /netbsd/i && -e "/usr/include/sys/event.h"; |
173 | my $can_kqueue = -e "/usr/include/sys/event.h"; |
155 | |
174 | |
156 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
175 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
157 | |
176 | |
158 | print <<EOF; |
177 | print <<EOF; |
159 | |
178 | |
… | |
… | |
216 | SUFFIX => '.gz', |
235 | SUFFIX => '.gz', |
217 | }, |
236 | }, |
218 | depend => { |
237 | depend => { |
219 | "EV.c" => "EV/EVAPI.h " |
238 | "EV.c" => "EV/EVAPI.h " |
220 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
239 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
221 | . "libev/event.h libev/event.c evdns.h evdns.c libev/ev_vars.h libev/ev_wrap.h", |
240 | . "libev/ev_vars.h libev/ev_wrap.h", |
222 | }, |
241 | }, |
223 | INC => "-Ilibev", |
242 | INC => "-Ilibev", |
224 | DEFINE => "$DEFINE", |
243 | DEFINE => "$DEFINE", |
225 | NAME => "EV", |
244 | NAME => "EV", |
226 | LIBS => [$LIBS], |
245 | LIBS => [$LIBS], |
… | |
… | |
228 | @anyevent, |
247 | @anyevent, |
229 | }, |
248 | }, |
230 | VERSION_FROM => "EV.pm", |
249 | VERSION_FROM => "EV.pm", |
231 | PM => { |
250 | PM => { |
232 | 'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
251 | 'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
233 | 'EV/DNS.pm' => '$(INST_LIBDIR)/EV/DNS.pm', |
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234 | 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
252 | 'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
235 | 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
253 | 'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
236 | 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
254 | 'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
237 | }, |
255 | }, |
238 | ); |
256 | ); |