1 |
root |
1.4 |
use 5.006; |
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3 |
root |
1.37 |
use strict qw(vars subs); |
4 |
root |
1.7 |
use Config; |
5 |
root |
1.1 |
use ExtUtils::MakeMaker; |
6 |
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7 |
root |
1.10 |
unless (-e "libev/ev_epoll.c") { |
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print <<EOF; |
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10 |
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*** |
11 |
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*** ERROR: libev is missing or damaged. If you used a CVS check-out of EV, |
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*** you also have to check-out the "libev" module from the same CVS |
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*** repository into the EV dir (i.e. EV/libev from outside). |
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*** |
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16 |
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EOF |
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exit 1; |
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} |
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1.11 |
print <<EOF; |
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22 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
23 |
root |
1.11 |
|
24 |
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Welcome to EV configuration. If you are in a hurry, just press return here |
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and hope for the best. The defaults should usually do. |
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28 |
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EOF |
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if (prompt ("Skip further questions and use defaults (y/n)?", "y") =~ /[yY]/) { |
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$ENV{PERL_MM_USE_DEFAULT} = 1; |
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} |
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34 |
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print <<EOF; |
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36 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
37 |
root |
1.11 |
|
38 |
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39 |
root |
1.14 |
POSIX optionally offers support for a monotonic clock source. EV |
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can take advantage of this clock source to detect time jumps |
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reliably. Unfortunately, some systems are bound to be broken, so you can |
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disable this here: you can completely disable the detection and use of |
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the monotonic clock by answering 'n' here. Support for this clock type |
44 |
root |
1.29 |
will otherwise be autodetected at both compile- and runtime. (this setting |
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currently affects the use of nanosleep over select as well). |
46 |
root |
1.11 |
|
47 |
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EOF |
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49 |
root |
1.37 |
my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/)); |
50 |
root |
1.11 |
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51 |
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print <<EOF; |
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53 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
54 |
root |
1.11 |
|
55 |
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56 |
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POSIX optionally offers support for a (potentially) high-resolution |
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realtime clock interface. In a good implementation, using it is faster |
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than the normal method of using gettimeofday. Unfortunately, this option |
59 |
root |
1.39 |
is also bound to be broken on some systems, and current EV versions do not |
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actually call C<gettimeofday> very often, so ti defaults to no. |
61 |
root |
1.11 |
|
62 |
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EOF |
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64 |
root |
1.39 |
$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "n") =~ /[yY]/)); |
65 |
root |
1.11 |
|
66 |
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print <<EOF; |
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68 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
69 |
root |
1.11 |
|
70 |
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71 |
root |
1.19 |
EV can use various backends with various portability issue. The select |
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backend is the most portable and makes for a good fallback, but it can be |
73 |
root |
1.22 |
limited to a low number of file descriptors and/or might not compile. If |
74 |
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you have problems with compiling ev_select.c, you might try to play around |
75 |
root |
1.19 |
with disabling it here, or forcing it to use the fd_set provided by your |
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OS, via the next question. I highly recommend keeping it in. |
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EOF |
79 |
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if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) { |
81 |
root |
1.22 |
$DEFINE .= " -DEV_USE_SELECT=1"; |
82 |
root |
1.19 |
|
83 |
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print <<EOF; |
84 |
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85 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
86 |
root |
1.19 |
|
87 |
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The select backend can operate in two modes. One uses the system-provided |
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fd_set and is usually limited to 1024 file descriptors (64 on windows), |
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the other requires your header files to define NFDBITS and declare a |
91 |
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suitable fd_mask type. If you run into problems compiling ev_select.c, you |
92 |
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can try forcing the use of the system fd_set here. |
93 |
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94 |
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EOF |
95 |
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96 |
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if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) { |
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$DEFINE .= " -DEV_SELECT_USE_FD_SET"; |
98 |
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} |
99 |
root |
1.22 |
} else { |
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$DEFINE .= " -DEV_USE_SELECT=0"; |
101 |
root |
1.19 |
} |
102 |
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103 |
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print <<EOF; |
104 |
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105 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
106 |
root |
1.19 |
|
107 |
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108 |
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The second very portable backend is poll(2). It does not exist on windows |
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and various versions of Mac OS X (and on the other versions it simply |
110 |
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doesn't work), but works basically everywhere else. It is recommended to use |
111 |
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the default here unless you run into compile problems in ev_poll.c. |
112 |
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113 |
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EOF |
114 |
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115 |
root |
1.22 |
$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/)); |
116 |
root |
1.19 |
|
117 |
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print <<EOF; |
118 |
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119 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
120 |
root |
1.19 |
|
121 |
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122 |
root |
1.24 |
Select and poll make it hard to write efficient servers, especially if the |
123 |
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number of active connections is much lower than the watched ones. GNU/Linux |
124 |
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systems have a more scalable method called "epoll", which EV can use. For |
125 |
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this to work, both your kernel and glibc have to support epoll, but if you |
126 |
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can compile it, the detection will be done at runtime, and EV will safely |
127 |
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fall back to using select when epoll isn't available. If unsure, accept |
128 |
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the default. |
129 |
root |
1.11 |
|
130 |
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EOF |
131 |
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132 |
root |
1.37 |
my $can_epoll = -e "/usr/include/sys/epoll.h"; |
133 |
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$can_epoll = $ENV{EV_EPOLL} if exists $ENV{EV_EPOLL}; |
134 |
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$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", $can_epoll ? "y" : "n") =~ /[yY]/)); |
135 |
root |
1.15 |
|
136 |
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print <<EOF; |
137 |
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138 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
139 |
root |
1.15 |
|
140 |
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141 |
root |
1.23 |
Similarly to the epoll backend above, EV can take advantage of kqueue on |
142 |
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many BSD systems. Support for kqueue will be detected at runtime, with a |
143 |
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safe fallback to other methods when it cannot be used. |
144 |
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145 |
root |
1.31 |
Note that kqueue is broken on most operating systems, so by default it |
146 |
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won't be used on many platforms, but you can still create your own event |
147 |
root |
1.40 |
loop with kqueue backend if you ask specifically for it. |
148 |
root |
1.31 |
|
149 |
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Here is what we know: |
150 |
root |
1.23 |
|
151 |
root |
1.28 |
NetBSD: partially working in at least 3.1. Yeah! :) |
152 |
root |
1.24 |
FreeBSD: broken on at least 6.2-STABLE, |
153 |
root |
1.28 |
sockets *likely* work, ptys definitely don't. |
154 |
root |
1.23 |
OpenBSD: reports indicate that it likely doesn't work |
155 |
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(similar problems as on FreeBSD). |
156 |
root |
1.28 |
OS X: completely, utterly broken on at least < 10.5. |
157 |
root |
1.11 |
|
158 |
root |
1.15 |
EOF |
159 |
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160 |
root |
1.28 |
my $can_kqueue = -e "/usr/include/sys/event.h"; |
161 |
root |
1.37 |
$can_kqueue = $ENV{EV_KQUEUE} if exists $ENV{EV_KQUEUE}; |
162 |
root |
1.23 |
$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/)); |
163 |
root |
1.11 |
|
164 |
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print <<EOF; |
165 |
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166 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
167 |
root |
1.11 |
|
168 |
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169 |
root |
1.21 |
Similarly to the kqueue backend above, EV can take advantage of the |
170 |
root |
1.26 |
solaris 10 event port interface. Support for event ports will be detected |
171 |
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at runtime, with a safe fallback to other methods when it cannot be used. |
172 |
root |
1.21 |
|
173 |
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EOF |
174 |
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175 |
root |
1.26 |
$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable event port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/)); |
176 |
root |
1.21 |
|
177 |
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print <<EOF; |
178 |
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|
179 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
180 |
root |
1.21 |
|
181 |
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|
182 |
root |
1.11 |
EV needs the functions pthread_atfork and clock_gettime. On most systems |
183 |
root |
1.15 |
you need some special libraries for this (such as -lrt and -lpthread). You |
184 |
root |
1.23 |
can specify additional libraries to provide these calls (and any other |
185 |
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required by EV) now, or accept the default. |
186 |
root |
1.11 |
|
187 |
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EOF |
188 |
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189 |
root |
1.38 |
my $solaris_libs = $^O =~ /solaris/i ? "-lsocket -lnsl" : ""; |
190 |
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my $librt = $^O =~ /linux/i ? "-lpthread" : "-lpthread -lrt"; |
191 |
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my $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "$librt $solaris_libs"; |
192 |
root |
1.15 |
|
193 |
root |
1.11 |
|
194 |
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print <<EOF; |
195 |
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|
196 |
root |
1.22 |
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
197 |
root |
1.11 |
|
198 |
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|
199 |
root |
1.25 |
A backend of a different kind is the Linux inotify(7) interface, which can |
200 |
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be used to speed up (and reduce resource consumption) of stat watchers. If |
201 |
root |
1.40 |
you have the include file and libc support for it, it is usually a good |
202 |
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idea to enable it, as kernel availability is detected at runtime. |
203 |
root |
1.25 |
|
204 |
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EOF |
205 |
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206 |
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my $can_inotify = -e "/usr/include/sys/inotify.h"; |
207 |
root |
1.37 |
$can_inotify = $ENV{EV_INOTIFY} if exists $ENV{EV_INOTIFY}; |
208 |
root |
1.25 |
$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/)); |
209 |
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210 |
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print <<EOF; |
211 |
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212 |
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*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
213 |
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214 |
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|
215 |
root |
1.36 |
Another useful bit of functionality is the Linux eventfd, which is useful |
216 |
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for faster signal handling (don't care) and intra-thread communications |
217 |
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(more relevant). Kernel support for this will be probed at runtime, but |
218 |
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your libc must contain the necessary wrapper. Glibc 2.7 and later should |
219 |
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have this wrapper. |
220 |
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|
221 |
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EOF |
222 |
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|
223 |
root |
1.37 |
my $can_eventfd = -e "/usr/include/sys/eventfd.h"; |
224 |
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$can_eventfd = $ENV{EV_EVENTFD} if exists $ENV{EV_EVENTFD}; |
225 |
|
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$DEFINE .= " -DEV_USE_EVENTFD=" . (0 + (prompt ("Enable linux eventfd support (y/n)?", $can_eventfd ? "y" : "n") =~ /[yY]/)); |
226 |
root |
1.36 |
|
227 |
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print <<EOF; |
228 |
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|
229 |
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*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
230 |
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231 |
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|
232 |
root |
1.11 |
EOF |
233 |
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|
234 |
root |
1.20 |
my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : (); |
235 |
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|
236 |
root |
1.1 |
WriteMakefile( |
237 |
|
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dist => { |
238 |
root |
1.2 |
PREOP => 'pod2text EV.pm | tee README >$(DISTVNAME)/README; chmod -R u=rwX,go=rX . ;', |
239 |
root |
1.1 |
COMPRESS => 'gzip -9v', |
240 |
|
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SUFFIX => '.gz', |
241 |
|
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}, |
242 |
root |
1.10 |
depend => { |
243 |
root |
1.13 |
"EV.c" => "EV/EVAPI.h " |
244 |
root |
1.17 |
. "libev/ev.c libev/ev.h libev/ev_epoll.c libev/ev_select.c libev/ev_kqueue.c libev/ev_poll.c " |
245 |
root |
1.30 |
. "libev/ev_vars.h libev/ev_wrap.h", |
246 |
root |
1.10 |
}, |
247 |
root |
1.8 |
INC => "-Ilibev", |
248 |
root |
1.11 |
DEFINE => "$DEFINE", |
249 |
root |
1.2 |
NAME => "EV", |
250 |
root |
1.11 |
LIBS => [$LIBS], |
251 |
root |
1.20 |
PREREQ_PM => { |
252 |
|
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@anyevent, |
253 |
root |
1.41 |
"common::sense" => 0, |
254 |
root |
1.20 |
}, |
255 |
root |
1.2 |
VERSION_FROM => "EV.pm", |
256 |
root |
1.5 |
PM => { |
257 |
|
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'EV.pm' => '$(INST_LIBDIR)/EV.pm', |
258 |
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'EV/EVAPI.h' => '$(INST_LIBDIR)/EV/EVAPI.h', |
259 |
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'EV/MakeMaker.pm' => '$(INST_LIBDIR)/EV/MakeMaker.pm', |
260 |
root |
1.8 |
'libev/ev.h' => '$(INST_LIBDIR)/EV/ev.h', |
261 |
root |
1.35 |
'libev/ev.pod' => '$(INST_LIBDIR)/EV/libev.pod', |
262 |
root |
1.5 |
}, |
263 |
root |
1.34 |
MAN3PODS => { |
264 |
|
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'EV.pm' => '$(INST_MAN3DIR)/EV.$(MAN3EXT)', |
265 |
|
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'EV/MakeMaker.pm' => '$(INST_MAN3DIR)/EV::MakeMaker.$(MAN3EXT)', |
266 |
root |
1.35 |
'libev/ev.pod' => '$(INST_MAN3DIR)/EV::libev.$(MAN3EXT)', |
267 |
root |
1.34 |
}, |
268 |
root |
1.1 |
); |
269 |
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|
270 |
root |
1.6 |
|