[ViewVC] Diff of: cvs/EV/Makefile.PL

Comparing EV/Makefile.PL (file contents):
Revision 1.21 by root, Fri Nov 16 01:46:26 2007 UTC vs.
Revision 1.25 by root, Wed Nov 28 11:15:54 2007 UTC

…		…
16	exit 1;	16	exit 1;
17	}	17	}
18		18
19	print <<EOF;	19	print <<EOF;
20		20
21
22	* * * * * * * * * * * * * * * * * *	21	* * * * * * * * * * * * * * * * * *
		22
23		23
24	Welcome to EV configuration. If you are in a hurry, just press return here	24	Welcome to EV configuration. If you are in a hurry, just press return here
25	and hope for the best. The defaults should usually do.	25	and hope for the best. The defaults should usually do.
26		26
27	EOF	27	EOF
…		…
30	$ENV{PERL_MM_USE_DEFAULT} = 1;	30	$ENV{PERL_MM_USE_DEFAULT} = 1;
31	}	31	}
32		32
33	print <<EOF;	33	print <<EOF;
34		34
35
36	* * * * * * * * * * * * * * * * * *	35	* * * * * * * * * * * * * * * * * *
		36
37		37
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.
44		44
45	EOF	45	EOF
46		46
47	if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) {	47	$DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
48	$DEFINE .= " -DEV_USE_MONOTONIC";
49	}
50		48
51	print <<EOF;	49	print <<EOF;
52		50
53
54	* * * * * * * * * * * * * * * * * *	51	* * * * * * * * * * * * * * * * * *
		52
55		53
56	POSIX optionally offers support for a (potentially) high-resolution	54	POSIX optionally offers support for a (potentially) high-resolution
57	realtime clock interface. In a good implementation, using it is faster	55	realtime clock interface. In a good implementation, using it is faster
58	than the normal method of using gettimeofday. Unfortunately, this option	56	than the normal method of using gettimeofday. Unfortunately, this option
59	is also bound to be broken on some systems, so you can disable use and	57	is also bound to be broken on some systems, so you can disable use and
60	probing of this feature altogether here. Otherwise support for this clock	58	probing of this feature altogether here. Otherwise support for this clock
61	type will be autodetected at compiletime.	59	type will be autodetected at compiletime.
62		60
63	EOF	61	EOF
64		62
65	if (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") !~ /[yY]/) {	63	$DEFINE .= " -DEV_USE_REALTIME=" . (0 + (prompt ("Prefer clock_gettime (CLOCK_REALTIME) over gettimeofday (y/n)?", "y") =~ /[yY]/));
66	$DEFINE .= " -DEV_USE_REALTIME=0";
67	}
68		64
69	print <<EOF;	65	print <<EOF;
70		66
71
72	* * * * * * * * * * * * * * * * * *	67	* * * * * * * * * * * * * * * * * *
		68
73		69
74	EV can use various backends with various portability issue. The select	70	EV can use various backends with various portability issue. The select
75	backend is the most portable and makes for a good fallback, but it can be	71	backend is the most portable and makes for a good fallback, but it can be
76	limited to a low number of file descriptors and/or might not compile. If	72	limited to a low number of file descriptors and/or might not compile. If
77	you have problems with compiling ev_select., you might try to play around	73	you have problems with compiling ev_select.c, you might try to play around
78	with disabling it here, or forcing it to use the fd_set provided by your	74	with disabling it here, or forcing it to use the fd_set provided by your
79	OS, via the next question. I highly recommend keeping it in.	75	OS, via the next question. I highly recommend keeping it in.
80		76
81	EOF	77	EOF
82		78
83	if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {	79	if (prompt ("Enable select backend (y/n)?", "y") =~ /[yY]/) {
84	$DEFINE .= " -DEV_USE_SELECT";	80	$DEFINE .= " -DEV_USE_SELECT=1";
85		81
86	print <<EOF;	82	print <<EOF;
87		83
88
89	* * * * * * * * * * * * * * * * * *	84	* * * * * * * * * * * * * * * * * *
		85
90		86
91	The select backend can operate in two modes. One uses the system-provided	87	The select backend can operate in two modes. One uses the system-provided
92	fd_set and is usually limited to 1024 file descriptors (64 on windows),	88	fd_set and is usually limited to 1024 file descriptors (64 on windows),
93	the other requires your header files to define NFDBITS and declare a	89	the other requires your header files to define NFDBITS and declare a
94	suitable fd_mask type. If you run into problems compiling ev_select.c, you	90	suitable fd_mask type. If you run into problems compiling ev_select.c, you
…		…
97	EOF	93	EOF
98		94
99	if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {	95	if (prompt ("Force use of system fd_set for select backend (y/n)?", "n") =~ /[yY]/) {
100	$DEFINE .= " -DEV_SELECT_USE_FD_SET";	96	$DEFINE .= " -DEV_SELECT_USE_FD_SET";
101	}	97	}
		98	} else {
		99	$DEFINE .= " -DEV_USE_SELECT=0";
102	}	100	}
103		101
104	print <<EOF;	102	print <<EOF;
105		103
106
107	* * * * * * * * * * * * * * * * * *	104	* * * * * * * * * * * * * * * * * *
		105
108		106
109	The second very portable backend is poll(2). It does not exist on windows	107	The second very portable backend is poll(2). It does not exist on windows
110	and various versions of Mac OS X (and on the other versions it simply	108	and various versions of Mac OS X (and on the other versions it simply
111	doesn't work), but works basically everywhere else. It is recommended to use	109	doesn't work), but works basically everywhere else. It is recommended to use
112	the default here unless you run into compile problems in ev_poll.c.	110	the default here unless you run into compile problems in ev_poll.c.
113		111
114	EOF	112	EOF
115		113
116	if (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/) {	114	$DEFINE .= " -DEV_USE_POLL=" . (0 + (prompt ("Enable poll backend (y/n)?", (-e "/usr/include/poll.h") ? "y" : "n") =~ /[yY]/));
117	$DEFINE .= " -DEV_USE_POLL";
118	}
119		115
120	print <<EOF;	116	print <<EOF;
121		117
122
123	* * * * * * * * * * * * * * * * * *	118	* * * * * * * * * * * * * * * * * *
124		119
125	EV by default uses select, which makes it hard to write efficient servers,	120
126	especially if the number of active conencitons is much lower than the open	121	Select and poll make it hard to write efficient servers, especially if the
		122	number of active connections is much lower than the watched ones. GNU/Linux
127	ones. GNU/Linux systems have a more scalable method called "epoll", which	123	systems have a more scalable method called "epoll", which EV can use. For
128	EV can use. For this to work, both your kernel and glibc have to support	124	this to work, both your kernel and glibc have to support epoll, but if you
129	epoll, but if you can compile it, the detection will be done at runtime,	125	can compile it, the detection will be done at runtime, and EV will safely
130	and EV will safely fall back to using select when epoll isn't available.	126	fall back to using select when epoll isn't available. If unsure, accept
131	If unsure, accept the default.	127	the default.
132		128
133	EOF	129	EOF
134		130
135	if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) {	131	$DEFINE .= " -DEV_USE_EPOLL=" . (0 + (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/));
136	$DEFINE .= " -DEV_USE_EPOLL";
137	}
138		132
139	print <<EOF;	133	print <<EOF;
140		134
141
142	* * * * * * * * * * * * * * * * * *	135	* * * * * * * * * * * * * * * * * *
143		136
		137
144	Similarly to the epoll backend above, EV can take advantage of kqueue	138	Similarly to the epoll backend above, EV can take advantage of kqueue on
145	on many BSD systems (it seems to be broken on Mac OS X though, but what	139	many BSD systems. Support for kqueue will be detected at runtime, with a
146	isn't broken on that shoddy platform... ah yes, the cash gushing by apple,	140	safe fallback to other methods when it cannot be used.
147	selling defective software works perfectly there). Support for kqueue will
148	be detected at runtime, with a safe fallback to other methods when it
149	cannot be used.
150		141
151	EOF	142	Note that kqueue is broken on most operating systems, so it defaults to
		143	'n' on everything but netbsd. Here is what we know:
152		144
153	if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/) {	145	NetBSD: working in at least 3.1. Yeah! :)
154	$DEFINE .= " -DEV_USE_KQUEUE";	146	FreeBSD: broken on at least 6.2-STABLE,
155	}	147	sockets and pipes might work, ptys definitely don't.
		148	OpenBSD: reports indicate that it likely doesn't work
		149	(similar problems as on FreeBSD).
		150	OS X: completely, utterly broken on at least <= 10.5.
156		151
157	print <<EOF;	152	EOF
158		153
		154	my $can_kqueue = $^O =~ /netbsd/i && -e "/usr/include/sys/event.h";
159		155
		156	$DEFINE .= " -DEV_USE_KQUEUE=" . (0 + (prompt ("Enable kqueue backend (y/n)?", $can_kqueue ? "y" : "n") =~ /[yY]/));
		157
		158	print <<EOF;
		159
160	* * * * * * * * * * * * * * * * * *	160	* * * * * * * * * * * * * * * * * *
		161
161		162
162	Similarly to the kqueue backend above, EV can take advantage of the	163	Similarly to the kqueue backend above, EV can take advantage of the
163	solaris 10 port interface. Support for port will be detected at runtime,	164	solaris 10 port interface. Support for port will be detected at runtime,
164	with a safe fallback to other methods when it cannot be used.	165	with a safe fallback to other methods when it cannot be used.
165		166
166	EOF	167	EOF
167		168
168	if (prompt ("Enable port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/) {	169	$DEFINE .= " -DEV_USE_PORT=" . (0 + (prompt ("Enable port backend (y/n)?", (-e "/usr/include/sys/port.h") ? "y" : "n") =~ /[yY]/));
169	$DEFINE .= " -DEV_USE_PORT";
170	}
171		170
172	print <<EOF;	171	print <<EOF;
173		172
174
175	* * * * * * * * * * * * * * * * * *	173	* * * * * * * * * * * * * * * * * *
		174
176		175
177	EV needs the functions pthread_atfork and clock_gettime. On most systems	176	EV needs the functions pthread_atfork and clock_gettime. On most systems
178	you need some special libraries for this (such as -lrt and -lpthread). You	177	you need some special libraries for this (such as -lrt and -lpthread). You
179	can specify additional libraries to provide these calls now, or accept the	178	can specify additional libraries to provide these calls (and any other
180	default.	179	required by EV) now, or accept the default.
181		180
182	EOF	181	EOF
183		182
		183	$SOLARIS_LIBS = $^O =~ /solaris/ ? " -lsocket -lnsl" : "";
		184
184	$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt";	185	$LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt$SOLARIS_LIBS";
185		186
186		187
187	print <<EOF;	188	print <<EOF;
188		189
189
190	* * * * * * * * * * * * * * * * * *	190	* * * * * * * * * * * * * * * * * *
		191
		192
		193	A backend of a different kind is the Linux inotify(7) interface, which can
		194	be used to speed up (and reduce resource consumption) of stat watchers. If
		195	you have it, it is usually a good idea to enable it.
		196
		197	EOF
		198
		199	my $can_inotify = -e "/usr/include/sys/inotify.h";
		200
		201	$DEFINE .= " -DEV_USE_INOTIFY=" . (0 + (prompt ("Enable inotify support (y/n)?", $can_inotify ? "y" : "n") =~ /[yY]/));
		202
		203	print <<EOF;
		204
		205	* * * * * * * * * * * * * * * * * *
		206
191		207
192	EOF	208	EOF
193		209
194	my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();	210	my @anyevent = eval { require AnyEvent; $AnyEvent::VERSION < 2.6 } ? (AnyEvent => 2.6) : ();
195		211

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Comparing EV/Makefile.PL (file contents): Revision 1.21 by root, Fri Nov 16 01:46:26 2007 UTC vs. Revision 1.25 by root, Wed Nov 28 11:15:54 2007 UTC

Diff Legend

Comparing EV/Makefile.PL (file contents):
Revision 1.21 by root, Fri Nov 16 01:46:26 2007 UTC vs.
Revision 1.25 by root, Wed Nov 28 11:15:54 2007 UTC