… | |
… | |
7 | scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth} |
7 | scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth} |
8 | } |
8 | } |
9 | |
9 | |
10 | my $DEFINE; |
10 | my $DEFINE; |
11 | |
11 | |
12 | unless (-e "libev/ev_epoll.c") { |
12 | unless (-e "libev/ev_iouring.c") { |
13 | print <<EOF; |
13 | print <<EOF; |
14 | |
14 | |
15 | *** |
15 | *** |
16 | *** ERROR: libev is missing or damaged. If you used a CVS check-out of EV, |
16 | *** ERROR: libev is missing or damaged. If you used a CVS check-out of EV, |
17 | *** you also have to check-out the "libev" module from the same CVS |
17 | *** you also have to check-out the "libev" module from the same CVS |
… | |
… | |
185 | print <<EOF; |
185 | print <<EOF; |
186 | |
186 | |
187 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
187 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
188 | |
188 | |
189 | |
189 | |
190 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
190 | Linux 4.19 introduced another event polling interface, "io_uring". While |
191 | many BSD systems. Support for kqueue will be detected at runtime, with a |
191 | this API is far superior to epoll and almost rivals linuxaio, it also |
192 | safe fallback to other methods when it cannot be used. |
192 | suffers from the same issues as kqueue typically does: only a subset of |
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193 | file types are supported (as of 5.2). It is also very buggy still, and |
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194 | most importantly, very very slow for most workloads. Therefore, this |
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195 | backend is not used by default, even when it is compiled in, and you have |
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196 | to request it explicitly, e.g. with LIBEV_FLAGS=128. If unsure, accept the |
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197 | default. |
193 | |
198 | |
|
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199 | EOF |
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200 | |
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201 | my $can_iouring = have_inc "linux/fs.h"; |
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202 | $can_iouring = $ENV{EV_IOURING} if exists $ENV{EV_IOURING}; |
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203 | $can_iouring = 0 + (prompt ("Enable linux io_uring backend (y/n)?", $can_iouring ? "y" : "n") =~ /[yY]/); |
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204 | $DEFINE .= " -DEV_USE_IOURING=$can_iouring"; |
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205 | |
|
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206 | if ($can_iouring) { |
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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 | The previously mentioned Linux io_uring is experimental and will not be |
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213 | used unless requested explicitly. You can, howeer, choose to make ti a |
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214 | recommended basckend, which means it will be chosen if available even when |
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215 | not explicitly asked for, in preference to epoll on GNU/Linux. This option |
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216 | is likely temporary. When unsure, accept the default. |
|
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217 | |
|
|
218 | EOF |
|
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219 | |
|
|
220 | my $recommend_iouring = 0; |
|
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221 | $recommend_iouring = $ENV{EV_RECOMMEND_IOURING} if exists $ENV{EV_RECOMMEND_IOURING}; |
|
|
222 | $recommend_iouring = 0 + (prompt ("Treat io_uring as a recommended backend (y/n)?", $recommend_iouring ? "y" : "n") =~ /[yY]/); |
|
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223 | $DEFINE .= " -DEV_RECOMMEND_IOURING=$recommend_iouring"; |
|
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224 | } |
|
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225 | |
|
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226 | print <<EOF; |
|
|
227 | |
|
|
228 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
|
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229 | |
|
|
230 | |
|
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231 | EV can take advantage of kqueue on many BSD systems. Support for kqueue |
|
|
232 | will be detected at runtime, with a safe fallback to other methods when it |
|
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233 | cannot be used. |
|
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234 | |
194 | Note that kqueue is broken on most operating systems, so by default it |
235 | Note that kqueue is subtly broken on most operating systems, so by default |
195 | won't be used on many platforms, but you can still create your own event |
236 | it won't be used on many platforms, but you can still create your own |
196 | loop with kqueue backend if you ask specifically for it. |
237 | event loop with kqueue backend if you ask specifically for it. |
197 | |
238 | |
198 | Here is what we know: |
239 | Here is what we know: |
199 | |
240 | |
200 | NetBSD: partially working in at least 3.1 and later. Yeah! :) |
241 | NetBSD: partially working in at least 3.1 and later. Yeah! :) |
201 | FreeBSD: broken on at least 6.2-STABLE, spotty in later versions, |
242 | FreeBSD: broken on at least 6.2-STABLE, spotty in later versions, |
… | |
… | |
204 | (similar problems as on FreeBSD). |
245 | (similar problems as on FreeBSD). |
205 | OS X: completely, utterly broken on at least <= 10.6. |
246 | OS X: completely, utterly broken on at least <= 10.6. |
206 | |
247 | |
207 | EOF |
248 | EOF |
208 | |
249 | |
|
|
250 | # minix has all the header files, but no implementation. won-der-ful. |
209 | my $can_kqueue = have_inc "sys/event.h"; |
251 | my $can_kqueue = have_inc "sys/event.h" && $^O ne "minix"; |
210 | $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; |
252 | $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; |
211 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
253 | $DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
212 | |
254 | |
213 | print <<EOF; |
255 | print <<EOF; |
214 | |
256 | |
… | |
… | |
291 | EOF |
333 | EOF |
292 | |
334 | |
293 | my $can_signalfd = have_inc "sys/signalfd.h"; |
335 | my $can_signalfd = have_inc "sys/signalfd.h"; |
294 | $can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD}; |
336 | $can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD}; |
295 | $DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/)); |
337 | $DEFINE .= " -DEV_USE_SIGNALFD=" . (0 + (prompt ("Enable linux signalfd support (y/n)?", $can_signalfd ? "y" : "n") =~ /[yY]/)); |
|
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338 | |
|
|
339 | print <<EOF; |
|
|
340 | |
|
|
341 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
|
|
342 | |
|
|
343 | |
|
|
344 | Libev contains numerous internal assert() invocations to check for |
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|
345 | consistency and user errors. These are normally enabled, but most |
|
|
346 | perl builds disable this error reporting mechanism by default. You |
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|
347 | can re-enable these asserts here. Enabling them might help you catch |
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348 | programming bugs earlier, but might cause a small slowdown. Also, failures |
|
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349 | will be reported by aboritng your program, instead of throwing a perl |
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350 | exception. |
|
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351 | |
|
|
352 | If unsure, enable this if you only use this perl installation for |
|
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353 | development, and leave it off for use in production environments. |
|
|
354 | |
|
|
355 | EOF |
|
|
356 | |
|
|
357 | my $enable_assertions = 0; |
|
|
358 | $enable_assertions = 0 + (prompt ("Make sure assertions are enabled? (y/n)?", $enable_assertions ? "y" : "n") =~ /[yY]/); |
|
|
359 | $DEFINE .= " -DEV_ENABLE_ASERTIONS=1" if $enable_assertions; |
296 | |
360 | |
297 | print <<EOF; |
361 | print <<EOF; |
298 | |
362 | |
299 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
363 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
300 | |
364 | |
… | |
… | |
328 | COMPRESS => 'gzip -9v', |
392 | COMPRESS => 'gzip -9v', |
329 | SUFFIX => '.gz', |
393 | SUFFIX => '.gz', |
330 | }, |
394 | }, |
331 | depend => { |
395 | depend => { |
332 | "EV.c" => "EV/EVAPI.h " |
396 | "EV.c" => "EV/EVAPI.h " |
333 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
397 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c libev/ev_linuxaio.c " |
334 | . "libev/ev_vars.h libev/ev_wrap.h", |
398 | . "libev/ev_vars.h libev/ev_wrap.h", |
335 | }, |
399 | }, |
336 | INC => "-Ilibev", |
400 | INC => "-Ilibev", |
337 | DEFINE => "$DEFINE", |
401 | DEFINE => "$DEFINE", |
338 | NAME => "EV", |
402 | NAME => "EV", |
… | |
… | |
355 | 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
419 | 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
356 | 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
420 | 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
357 | }, |
421 | }, |
358 | ); |
422 | ); |
359 | |
423 | |
360 | |
|
|