… | |
… | |
34 | print <<EOF; |
34 | print <<EOF; |
35 | |
35 | |
36 | |
36 | |
37 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
37 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
38 | |
38 | |
39 | POSIX optionally offers support for a monotonic clock source. EV can |
39 | POSIX optionally offers support for a monotonic clock source. EV |
40 | take advantage of this clock source to detect time jumps reliably. This |
40 | can take advantage of this clock source to detect time jumps |
41 | will usually slow down EV a tiny amount, but this is usually |
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42 | well-invested. Unfortunately, some systems are bound to be broken, so |
41 | reliably. Unfortunately, some systems are bound to be broken, so you can |
43 | you can disable this here. Whatever your reasons, you can completely |
42 | disable this here: you can completely disable the detection and use of |
44 | disable the detection and use of this monotonic clock by answering 'n' |
43 | the monotonic clock by answering 'n' here. Support for this clock type |
45 | here. Support for this clock type will otherwise be autodetected at both |
44 | will otherwise be autodetected at both compile- and runtime. |
46 | compile- and runtime. |
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47 | |
45 | |
48 | EOF |
46 | EOF |
49 | |
47 | |
50 | if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { |
48 | if (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) { |
51 | $DEFINE .= " -DEV_USE_MONOTONIC"; |
49 | $DEFINE .= " -DEV_USE_MONOTONIC"; |
… | |
… | |
72 | print <<EOF; |
70 | print <<EOF; |
73 | |
71 | |
74 | |
72 | |
75 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
73 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
76 | |
74 | |
77 | EV needs the functions pthread_atfork and clock_gettime. On most systems |
75 | EV by default uses select, which makes it hard to write efficient servers, |
78 | you need some special libraries for this (such as -lrt and -lpthread). You can |
76 | especially if the number of active conencitons is much lower than the open |
79 | specify additional libraries to provide these calls now, or accept the default. |
77 | ones. GNU/Linux systems have a more scalable method called "epoll", which |
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78 | EV can use. For this to work, both your kernel and glibc have to support |
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79 | epoll, but if you can compile it, the detection will be done at runtime, |
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80 | and EV will safely fall back to using select when epoll isn't available. |
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81 | If unsure, accept the default. |
80 | |
82 | |
81 | EOF |
83 | EOF |
82 | |
84 | |
83 | $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt"; |
85 | if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) { |
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86 | $DEFINE .= " -DEV_USE_EPOLL"; |
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87 | } |
84 | |
88 | |
|
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89 | print <<EOF; |
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90 | |
|
|
91 | |
|
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92 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
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93 | |
|
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94 | Similarly to the epoll backend above, EV can take advantage of kqueue on |
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95 | many BSD systems (it seems to be broken on Mac OS X though). The kqueue |
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96 | backend has not been tested, however, so it is disabled by default. Please |
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97 | test (and preferably fix) the kqueue backend when you have a machine |
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98 | supporting it. Support for kqueue will be detected at runtime, with a |
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99 | safe fallback to other methods when it cannot be used. |
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100 | |
|
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101 | EOF |
|
|
102 | |
|
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103 | if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h") ? "y" : "n") =~ /[yY]/) { |
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104 | $DEFINE .= " -DEV_USE_KQUEUE"; |
|
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105 | } |
85 | |
106 | |
86 | print <<EOF; |
107 | print <<EOF; |
87 | |
108 | |
88 | |
109 | |
89 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
110 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
90 | |
111 | |
91 | EV needs the functions pthread_atfork and clock_gettime. On most systems |
112 | EV needs the functions pthread_atfork and clock_gettime. On most systems |
92 | you need some special libraries for this (such as -lrt and -lpthread). You can |
113 | you need some special libraries for this (such as -lrt and -lpthread). You |
93 | specify additional libraries to provide these calls now, or accept the default. |
114 | can specify additional libraries to provide these calls now, or accept the |
|
|
115 | default. |
94 | |
116 | |
95 | EOF |
117 | EOF |
96 | |
118 | |
97 | if (prompt ("Enable epoll backend (y/n)?", (-e "/usr/include/sys/epoll.h") ? "y" : "n") =~ /[yY]/) { |
119 | $LIBS = prompt "Extra libraries for pthread_atfork and clock_gettime?", "-lpthread -lrt"; |
98 | $DEFINE .= " -DEV_USE_EPOLL"; |
120 | |
99 | } |
|
|
100 | |
121 | |
101 | print <<EOF; |
122 | print <<EOF; |
102 | |
123 | |
103 | |
124 | |
104 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
125 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |