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Revision 1.15 by root, Fri Nov 9 20:55:09 2007 UTC vs.
Revision 1.27 by root, Sat Nov 17 05:26:09 2007 UTC

… …
33 33
34 ev.h 34 ev.h
35 ev.c 35 ev.c
36 ev_vars.h 36 ev_vars.h
37 ev_wrap.h 37 ev_wrap.h
38 ev_win32.c 38
39 ev_win32.c required on win32 platforms only
39 40
40 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)
41 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)
42 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)
43 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)
44 46
45 "ev.c" includes the backend files directly when enabled. 47 "ev.c" includes the backend files directly when enabled.
46 48
47 LIBEVENT COMPATIBILITY API 49 LIBEVENT COMPATIBILITY API
48 50
… …
59 You need the following additional files for this: 61 You need the following additional files for this:
60 62
61 event.h 63 event.h
62 event.c 64 event.c
63 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
64PREPROCESSOR SYMBOLS 73PREPROCESSOR SYMBOLS
65 74
66 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
67 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
68 and only include the select backend. 77 and only include the select backend.
69 78
70 EV_STANDALONE 79 EV_STANDALONE
71 80
72 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
… …
75 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"
76 that are not directly supported by libev code alone. 85 that are not directly supported by libev code alone.
77 86
78 EV_USE_MONOTONIC 87 EV_USE_MONOTONIC
79 88
80 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
81 availability of the monotonic clock option at both compiletime and 90 of the monotonic clock option at both compiletime and
82 runtime. Otherwise no use of the monotonic clock option will be 91 runtime. Otherwise no use of the monotonic clock option will be
83 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.
84 95
85 EV_USE_REALTIME 96 EV_USE_REALTIME
86 97
87 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
88 of the realtime clock option at compiletime (and assume its 99 of the realtime clock option at compiletime (and assume its
… …
96 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
97 for the select(2) backend. No attempt at autodetection will be 108 for the select(2) backend. No attempt at autodetection will be
98 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
99 the select backend will not be compiled in. 110 the select backend will not be compiled in.
100 111
101 EV_SELECT_USE_WIN32_HANDLES 112 EV_SELECT_USE_FD_SET
102 113
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
103 When defined to 1, the select backend will assume that select 124 When defined to 1, the select backend will assume that
104 doesn't understand file descriptors but wants osf handles on 125 select/socket/connect etc. don't understand file descriptors but
105 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
106 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
107 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,
108 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.
109 131
110 EV_USE_POLL 132 EV_USE_POLL
111 133
112 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)
113 backend. No attempt at autodetection will be done. poll usually 135 backend. Otherwise it will be enabled on non-win32 platforms. It
114 performs worse than select, so its not enabled by default (it is 136 takes precedence over select.
115 also slightly less portable).
116 137
117 EV_USE_EPOLL 138 EV_USE_EPOLL
118 139
119 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
120 epoll backend. Its availability will be detected at runtime, 141 epoll backend. Its availability will be detected at runtime,
… …
124 EV_USE_KQUEUE 145 EV_USE_KQUEUE
125 146
126 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
127 style kqueue backend. Its availability will be detected at runtime, 148 style kqueue backend. Its availability will be detected at runtime,
128 otherwise another method will be used as fallback. This is the 149 otherwise another method will be used as fallback. This is the
129 preferred backend for BSD and BSd-like systems. Darwin brokenness 150 preferred backend for BSD and BSD-like systems. Darwin brokenness
130 will be detected at runtime and routed around by disabling this 151 will be detected at runtime and routed around by disabling this
131 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.
132 164
133 EV_H 165 EV_H
134 166
135 The name of the ev.h header file used to include it. The default 167 The name of the ev.h header file used to include it. The default
136 if undefined is <ev.h> in event.h and "ev.h" in ev.c. This can 168 if undefined is <ev.h> in event.h and "ev.h" in ev.c. This can
… …
139 171
140 EV_EVENT_H 172 EV_EVENT_H
141 173
142 Similarly to EV_H, this macro cna be used to override event.c's idea 174 Similarly to EV_H, this macro cna be used to override event.c's idea
143 of how the event.h header can be found. 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.
144 196
145 EV_COMMON 197 EV_COMMON
146 198
147 By default, all watchers have a "void *data" member. By redefining 199 By default, all watchers have a "void *data" member. By redefining
148 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
… …
153 205
154 #define EV_COMMON \ 206 #define EV_COMMON \
155 SV *self; /* contains this struct */ \ 207 SV *self; /* contains this struct */ \
156 SV *cb_sv, *fh /* note no trailing ";" */ 208 SV *cb_sv, *fh /* note no trailing ";" */
157 209
158 EV_PROTOTYPES
159
160 If defined to be "0", then "ev.h" will not define any function
161 prototypes, but still define all the structs and other
162 symbols. This is occasionally useful.
163
164 EV_MULTIPLICITY
165
166 If undefined or defined to "1", then all event-loop-specific
167 functions will have the "struct ev_loop *" as first argument, and
168 you can create additional independent event loops. Otherwise there
169 will be no support for multiple event loops and there is no first
170 event loop pointer argument. Instead, all functions act on the
171 single default loop.
172
173 EV_CB_DECLARE(type) 210 EV_CB_DECLARE(type)
174 EV_CB_INVOKE(watcher,revents) 211 EV_CB_INVOKE(watcher,revents)
212 ev_set_cb(ev,cb)
175 213
176 Can be used to change the callback member declaration in each 214 Can be used to change the callback member declaration in each
177 watcher, and the way callbacks are invoked. Must expand to a struct 215 watcher, and the way callbacks are invoked and set. Must expand
178 member definition and a statement, respectively. See the ev.v 216 to a struct member definition and a statement, respectively. See
179 header file for their default definitions. 217 the ev.v header file for their default definitions. One possible
218 use for overriding these is to avoid the ev_loop pointer as first
219 argument in all cases, or to use method calls instead of plain
220 function calls in C++.
180 221
181EXAMPLES 222EXAMPLES
182 223
183 For a real-world example of a program the includes libev 224 For a real-world example of a program the includes libev
184 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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