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Revision 1.10 by root, Thu Nov 8 18:52:45 2007 UTC vs.
Revision 1.27 by root, Sat Nov 17 05:26:09 2007 UTC

… …
22 instead and where you can put other configuration options): 22 instead and where you can put other configuration options):
23 23
24 #define EV_STANDALONE 1 24 #define EV_STANDALONE 1
25 #include "ev.h" 25 #include "ev.h"
26 26
27 Both header files and implementation files can be compiled with a C++
28 compiler (at least, thats a stated goal, and breakage will be treated
29 as a bug).
30
27 You need the following files in your source tree, or in a directory 31 You need the following files in your source tree, or in a directory
28 in your include path (e.g. in libev/ when using -Ilibev): 32 in your include path (e.g. in libev/ when using -Ilibev):
29 33
30 ev.h 34 ev.h
31 ev.c 35 ev.c
32 ev_vars.h 36 ev_vars.h
33 ev_wrap.h 37 ev_wrap.h
34 ev_win32.c 38
39 ev_win32.c required on win32 platforms only
35 40
36 ev_select.c only when select backend is enabled (which is is by default) 41 ev_select.c only when select backend is enabled (which is is by default)
37 ev_poll.c only when poll backend is enabled (disabled by default) 42 ev_poll.c only when poll backend is enabled (disabled by default)
38 ev_epoll.c only when the epoll backend is enabled (disabled by default) 43 ev_epoll.c only when the epoll backend is enabled (disabled by default)
39 ev_kqueue.c only when the kqueue backend is enabled (disabled by default) 44 ev_kqueue.c only when the kqueue backend is enabled (disabled by default)
45 ev_port.c only when the solaris port backend is enabled (disabled by default)
40 46
41 "ev.c" includes the backend files directly when enabled. 47 "ev.c" includes the backend files directly when enabled.
42 48
43 LIBEVENT COMPATIBILITY API 49 LIBEVENT COMPATIBILITY API
44 50
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55 You need the following additional files for this: 61 You need the following additional files for this:
56 62
57 event.h 63 event.h
58 event.c 64 event.c
59 65
66AUTOCONF SUPPORT
67
68 Instead of using EV_STANDALONE=1 and providing your config in whatever
69 way you want, you can also m4_include([libev.m4]) in your configure.ac
70 and leave EV_STANDALONE off. ev.c will then include "config.h" and
71 configure itself accordingly.
72
60PREPROCESSOR SYMBOLS 73PREPROCESSOR SYMBOLS
61 74
62 Libev can be configured via a variety of preprocessor symbols you have to define 75 Libev can be configured via a variety of preprocessor symbols you have to define
63 before including any of its files. The default is not to build for mulciplicity 76 before including any of its files. The default is not to build for multiplicity
64 and only include the select backend. 77 and only include the select backend.
65 78
66 EV_STANDALONE 79 EV_STANDALONE
67 80
68 Must always be "1", which keeps libev from including config.h or 81 Must always be "1", which keeps libev from including config.h or
… …
71 will also not define any of the structs usually found in "event.h" 84 will also not define any of the structs usually found in "event.h"
72 that are not directly supported by libev code alone. 85 that are not directly supported by libev code alone.
73 86
74 EV_USE_MONOTONIC 87 EV_USE_MONOTONIC
75 88
76 If undefined or defined to be "1", libev will try to detect the 89 If defined to be "1", libev will try to detect the availability
77 availability of the monotonic clock option at both compiletime and 90 of the monotonic clock option at both compiletime and
78 runtime. Otherwise no use of the monotonic clock option will be 91 runtime. Otherwise no use of the monotonic clock option will be
79 attempted. 92 attempted. If you enable this, you usually have to link against
93 librt or something similar. Enabling it when the functionality
94 isn't available is safe, though.
80 95
81 EV_USE_REALTIME 96 EV_USE_REALTIME
82 97
83 If defined to be "1", libev will try to detect the availability 98 If defined to be "1", libev will try to detect the availability
84 of the realtime clock option at compiletime (and assume its 99 of the realtime clock option at compiletime (and assume its
… …
92 If undefined or defined to be "1", libev will compile in support 107 If undefined or defined to be "1", libev will compile in support
93 for the select(2) backend. No attempt at autodetection will be 108 for the select(2) backend. No attempt at autodetection will be
94 done: if no other method takes over, select will be it. Otherwise 109 done: if no other method takes over, select will be it. Otherwise
95 the select backend will not be compiled in. 110 the select backend will not be compiled in.
96 111
97 EV_SELECT_USE_WIN32_HANDLES 112 EV_SELECT_USE_FD_SET
98 113
114 If defined to 1, then the select backend will use the system fd_set
115 structure. This is useful if libev doesn't compile due to a missing
116 NFDBITS or fd_mask definition or it misguesses the bitset layout on
117 exotic systems. This usually limits the range of file descriptors
118 to some low limit such as 1024 or might have other limitations
119 (winsocket only allows 64 sockets). The FD_SETSIZE macro, set
120 before compilation, might influence the size of the fd_set used.
121
122 EV_SELECT_IS_WINSOCKET
123
99 When defined to 1, the select backend will assume that select 124 When defined to 1, the select backend will assume that
100 doesn't understand file descriptors but wants osf handles on 125 select/socket/connect etc. don't understand file descriptors but
101 win32 (this is the case when the select to be used is the winsock 126 wants osf handles on win32 (this is the case when the select to
102 select). This means that it will call _get_osfhandle on the fd to 127 be used is the winsock select). This means that it will call
103 convert it to an OS handle. Should not be defined on non-win32 128 _get_osfhandle on the fd to convert it to an OS handle. Otherwise,
104 platforms. 129 it is assumed that all these functions actually work on fds, even
130 on win32. Should not be defined on non-win32 platforms.
105 131
106 EV_USE_POLL 132 EV_USE_POLL
107 133
108 If defined to be "1", libev will compile in support for the poll(2) 134 If defined to be "1", libev will compile in support for the poll(2)
109 backend. No attempt at autodetection will be done. poll usually 135 backend. Otherwise it will be enabled on non-win32 platforms. It
110 performs worse than select, so its not enabled by default (it is 136 takes precedence over select.
111 also slightly less portable).
112 137
113 EV_USE_EPOLL 138 EV_USE_EPOLL
114 139
115 If defined to be "1", libev will compile in support for the Linux 140 If defined to be "1", libev will compile in support for the Linux
116 epoll backend. Its availability will be detected at runtime, 141 epoll backend. Its availability will be detected at runtime,
… …
120 EV_USE_KQUEUE 145 EV_USE_KQUEUE
121 146
122 If defined to be "1", libev will compile in support for the BSD 147 If defined to be "1", libev will compile in support for the BSD
123 style kqueue backend. Its availability will be detected at runtime, 148 style kqueue backend. Its availability will be detected at runtime,
124 otherwise another method will be used as fallback. This is the 149 otherwise another method will be used as fallback. This is the
125 preferred backend for BSD and BSd-like systems. Darwin brokenness 150 preferred backend for BSD and BSD-like systems. Darwin brokenness
126 will be detected at runtime and routed around by disabling this 151 will be detected at runtime and routed around by disabling this
127 backend. 152 backend.
153
154 EV_USE_PORT
155
156 If defined to be "1", libev will compile in support for the Solaris
157 10 port style backend. Its availability will be detected at runtime,
158 otherwise another method will be used as fallback. This is the
159 preferred backend for Solaris 10 systems.
160
161 EV_USE_DEVPOLL
162
163 reserved for future expansion, works like the USE symbols above.
164
165 EV_H
166
167 The name of the ev.h header file used to include it. The default
168 if undefined is <ev.h> in event.h and "ev.h" in ev.c. This can
169 be used to virtually rename the ev.h header file in case of
170 conflicts.
171
172 EV_EVENT_H
173
174 Similarly to EV_H, this macro cna be used to override event.c's idea
175 of how the event.h header can be found.
176
177 EV_PROTOTYPES
178
179 If defined to be "0", then "ev.h" will not define any function
180 prototypes, but still define all the structs and other
181 symbols. This is occasionally useful.
182
183 EV_MULTIPLICITY
184
185 If undefined or defined to "1", then all event-loop-specific
186 functions will have the "struct ev_loop *" as first argument, and
187 you can create additional independent event loops. Otherwise there
188 will be no support for multiple event loops and there is no first
189 event loop pointer argument. Instead, all functions act on the
190 single default loop.
191
192 EV_PERIODICS
193
194 If undefined or defined to be "1", then periodic timers are
195 supported, otherwise not. This saves a few kb of code.
128 196
129 EV_COMMON 197 EV_COMMON
130 198
131 By default, all watchers have a "void *data" member. By redefining 199 By default, all watchers have a "void *data" member. By redefining
132 this macro to a something else you can include more and other types 200 this macro to a something else you can include more and other types
… …
137 205
138 #define EV_COMMON \ 206 #define EV_COMMON \
139 SV *self; /* contains this struct */ \ 207 SV *self; /* contains this struct */ \
140 SV *cb_sv, *fh /* note no trailing ";" */ 208 SV *cb_sv, *fh /* note no trailing ";" */
141 209
142 EV_PROTOTYPES 210 EV_CB_DECLARE(type)
211 EV_CB_INVOKE(watcher,revents)
212 ev_set_cb(ev,cb)
143 213
144 If defined to be "0", then "ev.h" will not define any function 214 Can be used to change the callback member declaration in each
145 prototypes, but still define all the structs and other 215 watcher, and the way callbacks are invoked and set. Must expand
146 symbols. This is occasionally useful. 216 to a struct member definition and a statement, respectively. See
147 217 the ev.v header file for their default definitions. One possible
148 EV_MULTIPLICITY 218 use for overriding these is to avoid the ev_loop pointer as first
149 219 argument in all cases, or to use method calls instead of plain
150 If undefined or defined to "1", then all event-loop-specific 220 function calls in C++.
151 functions will have the "struct ev_loop *" as first argument, and
152 you can create additional independent event loops. Otherwise there
153 will be no support for multiple event loops and there is no first
154 event loop pointer argument. Instead, all functions act on the
155 single default loop.
156 221
157EXAMPLES 222EXAMPLES
158 223
159 For a real-world example of a program the includes libev 224 For a real-world example of a program the includes libev
160 verbatim, you can have a look at the EV perl module 225 verbatim, you can have a look at the EV perl module

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