1 | use 5.008002; |
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2 | |
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3 | use strict qw(vars subs); |
1 | use strict qw(vars subs); |
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2 | use Canary::Stability EV => 1, 5.008002; |
4 | use Config; |
3 | use Config; |
5 | use ExtUtils::MakeMaker; |
4 | use ExtUtils::MakeMaker; |
6 | |
5 | |
7 | sub have_inc($) { |
6 | sub have_inc($) { |
8 | scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth} |
7 | scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth} |
9 | } |
8 | } |
10 | |
9 | |
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10 | my $DEFINE; |
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11 | |
11 | unless (-e "libev/ev_epoll.c") { |
12 | unless (-e "libev/ev_iouring.c") { |
12 | print <<EOF; |
13 | print <<EOF; |
13 | |
14 | |
14 | *** |
15 | *** |
15 | *** 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, |
16 | *** 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 |
… | |
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48 | will otherwise be autodetected at both compile- and runtime. (this setting |
49 | will otherwise be autodetected at both compile- and runtime. (this setting |
49 | currently affects the use of nanosleep over select as well). |
50 | currently affects the use of nanosleep over select as well). |
50 | |
51 | |
51 | EOF |
52 | EOF |
52 | |
53 | |
53 | my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/)); |
54 | unless (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { |
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55 | $DEFINE .= " -DEV_USE_MONOTONIC=0"; |
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56 | } |
54 | |
57 | |
55 | print <<EOF; |
58 | print <<EOF; |
56 | |
59 | |
57 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
60 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
58 | |
61 | |
… | |
… | |
140 | print <<EOF; |
143 | print <<EOF; |
141 | |
144 | |
142 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
145 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
143 | |
146 | |
144 | |
147 | |
145 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
148 | Linux 4.18 introduced another event polling interface, this time using |
146 | many BSD systems. Support for kqueue will be detected at runtime, with a |
149 | the Linux AIO API. While this API is far superior to epoll and almost |
147 | safe fallback to other methods when it cannot be used. |
150 | rivals kqueue, it also suffers from the same issues as kqueue typically |
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151 | does: only a subset of file types are supported (as of 4.19, I have seen |
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152 | eventfd, pipes, sockets files and some devices, but no ttys). It also |
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153 | is subject arbitrary system-wide limits imposed on it. Therefore, this |
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154 | backend is not used by default, even when it is compiled in, and you have |
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155 | to request it explicitly, e.g. with LIBEV_FLAGS=64. If unsure, accept the |
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156 | default. |
148 | |
157 | |
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158 | EOF |
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159 | |
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160 | my $can_linuxaio = have_inc "linux/aio_abi.h"; |
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161 | $can_linuxaio = $ENV{EV_LINUXAIO} if exists $ENV{EV_LINUXAIO}; |
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162 | $can_linuxaio = 0 + (prompt ("Enable linux aio backend (y/n)?", $can_linuxaio ? "y" : "n") =~ /[yY]/); |
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163 | $DEFINE .= " -DEV_USE_LINUXAIO=$can_linuxaio"; |
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164 | |
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165 | if ($can_linuxaio) { |
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166 | print <<EOF; |
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167 | |
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168 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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169 | |
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170 | |
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171 | The previously mentioned Linux AIO backend is experimental and will not |
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172 | be used unless requested explicitly. You can, howeer, choose to make ti a |
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173 | recommended basckend, which means it will be chosen if available even when |
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174 | not explicitly asked for, in preference to epoll on GNU/Linux. This option |
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175 | is likely temporary. When unsure, accept the default. |
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176 | |
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177 | EOF |
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178 | |
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179 | my $recommend_linuxaio = 0; |
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180 | $recommend_linuxaio = $ENV{EV_RECOMMEND_LINUXAIO} if exists $ENV{EV_RECOMMEND_LINUXAIO}; |
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181 | $recommend_linuxaio = 0 + (prompt ("Treat linux aio as a recommended backend (y/n)?", $recommend_linuxaio ? "y" : "n") =~ /[yY]/); |
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182 | $DEFINE .= " -DEV_RECOMMEND_LINUXAIO=$recommend_linuxaio"; |
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183 | } |
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184 | |
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185 | print <<EOF; |
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186 | |
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187 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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188 | |
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189 | |
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190 | Linux 4.19 introduced another event polling interface, "io_uring". While |
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191 | this API is far superior to epoll and almost rivals linuxaio, it also |
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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. |
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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 | |
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218 | EOF |
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219 | |
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220 | my $recommend_iouring = 0; |
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221 | $recommend_iouring = $ENV{EV_RECOMMEND_IOURING} if exists $ENV{EV_RECOMMEND_IOURING}; |
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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; |
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227 | |
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228 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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229 | |
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230 | |
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231 | EV can take advantage of kqueue on many BSD systems. Support for kqueue |
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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 | |
149 | 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 |
150 | 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 |
151 | loop with kqueue backend if you ask specifically for it. |
237 | event loop with kqueue backend if you ask specifically for it. |
152 | |
238 | |
153 | Here is what we know: |
239 | Here is what we know: |
154 | |
240 | |
155 | NetBSD: partially working in at least 3.1 and later. Yeah! :) |
241 | NetBSD: partially working in at least 3.1 and later. Yeah! :) |
156 | 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, |
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159 | (similar problems as on FreeBSD). |
245 | (similar problems as on FreeBSD). |
160 | OS X: completely, utterly broken on at least <= 10.6. |
246 | OS X: completely, utterly broken on at least <= 10.6. |
161 | |
247 | |
162 | EOF |
248 | EOF |
163 | |
249 | |
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250 | # minix has all the header files, but no implementation. won-der-ful. |
164 | my $can_kqueue = have_inc "sys/event.h"; |
251 | my $can_kqueue = have_inc "sys/event.h" && $^O ne "minix"; |
165 | $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; |
252 | $can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; |
166 | $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]/)); |
167 | |
254 | |
168 | print <<EOF; |
255 | print <<EOF; |
169 | |
256 | |
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246 | EOF |
333 | EOF |
247 | |
334 | |
248 | my $can_signalfd = have_inc "sys/signalfd.h"; |
335 | my $can_signalfd = have_inc "sys/signalfd.h"; |
249 | $can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD}; |
336 | $can_signalfd = $ENV{EV_SIGNALFD} if exists $ENV{EV_SIGNALFD}; |
250 | $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 | |
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339 | print <<EOF; |
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340 | |
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341 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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342 | |
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343 | |
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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 |
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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 | |
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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. |
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354 | |
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355 | EOF |
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356 | |
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357 | my $enable_assertions = 0; |
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358 | $enable_assertions = 0 + (prompt ("Make sure assertions are enabled? (y/n)?", $enable_assertions ? "y" : "n") =~ /[yY]/); |
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359 | $DEFINE .= " -DEV_ENABLE_ASERTIONS=1" if $enable_assertions; |
251 | |
360 | |
252 | print <<EOF; |
361 | print <<EOF; |
253 | |
362 | |
254 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
363 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
255 | |
364 | |
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283 | COMPRESS => 'gzip -9v', |
392 | COMPRESS => 'gzip -9v', |
284 | SUFFIX => '.gz', |
393 | SUFFIX => '.gz', |
285 | }, |
394 | }, |
286 | depend => { |
395 | depend => { |
287 | "EV.c" => "EV/EVAPI.h " |
396 | "EV.c" => "EV/EVAPI.h " |
288 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
397 | . "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c libev/ev_linuxaio.c " |
289 | . "libev/ev_vars.h libev/ev_wrap.h", |
398 | . "libev/ev_vars.h libev/ev_wrap.h", |
290 | }, |
399 | }, |
291 | INC => "-Ilibev", |
400 | INC => "-Ilibev", |
292 | DEFINE => "$DEFINE", |
401 | DEFINE => "$DEFINE", |
293 | NAME => "EV", |
402 | NAME => "EV", |
294 | LIBS => [$LIBS], |
403 | LIBS => [$LIBS], |
295 | PREREQ_PM => { |
404 | PREREQ_PM => { |
296 | @anyevent, |
405 | @anyevent, |
297 | "common::sense" => 0, |
406 | "common::sense" => 0, |
298 | }, |
407 | }, |
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408 | CONFIGURE_REQUIRES => { "ExtUtils::MakeMaker" => 6.52, "Canary::Stability" => 0 }, |
299 | VERSION_FROM => "EV.pm", |
409 | VERSION_FROM => "EV.pm", |
300 | PM => { |
410 | PM => { |
301 | 'EV.pm' => '$(INST_LIB)/EV.pm', |
411 | 'EV.pm' => '$(INST_LIB)/EV.pm', |
302 | 'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h', |
412 | 'EV/EVAPI.h' => '$(INST_LIB)/EV/EVAPI.h', |
303 | 'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm', |
413 | 'EV/MakeMaker.pm' => '$(INST_LIB)/EV/MakeMaker.pm', |
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309 | 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
419 | 'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
310 | 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
420 | 'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
311 | }, |
421 | }, |
312 | ); |
422 | ); |
313 | |
423 | |
314 | |
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