| … | |
… | |
| 70 | print <<EOF; |
70 | print <<EOF; |
| 71 | |
71 | |
| 72 | |
72 | |
| 73 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
73 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
| 74 | |
74 | |
| 75 | 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, |
| 76 | 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 |
| 77 | 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. |
| 78 | |
82 | |
| 79 | EOF |
83 | EOF |
| 80 | |
84 | |
| 81 | $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 | } |
| 82 | |
88 | |
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89 | print <<EOF; |
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90 | |
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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 |
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102 | |
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103 | if (prompt ("Enable kqueue backend (y/n)?", (-e "/usr/include/sys/event.h-disabled") ? "y" : "n") =~ /[yY]/) { |
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104 | $DEFINE .= " -DEV_USE_KQUEUE"; |
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105 | } |
| 83 | |
106 | |
| 84 | print <<EOF; |
107 | print <<EOF; |
| 85 | |
108 | |
| 86 | |
109 | |
| 87 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
110 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
| 88 | |
111 | |
| 89 | 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 |
| 90 | 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 |
| 91 | 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 |
|
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115 | default. |
| 92 | |
116 | |
| 93 | EOF |
117 | EOF |
| 94 | |
118 | |
| 95 | 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"; |
| 96 | $DEFINE .= " -DEV_USE_EPOLL"; |
120 | |
| 97 | } |
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| 98 | |
121 | |
| 99 | print <<EOF; |
122 | print <<EOF; |
| 100 | |
123 | |
| 101 | |
124 | |
| 102 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
125 | *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** |
