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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 | |
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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) |
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59 | You need the following additional files for this: |
60 | You need the following additional files for this: |
60 | |
61 | |
61 | event.h |
62 | event.h |
62 | event.c |
63 | event.c |
63 | |
64 | |
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65 | AUTOCONF SUPPORT |
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66 | |
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67 | Instead of using EV_STANDALONE=1 and providing your config in whatever |
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68 | way you want, you can also m4_include([libev.m4]) in your configure.ac |
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69 | and leave EV_STANDALONE off. ev.c will then include "config.h" and |
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70 | configure itself accordingly. |
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71 | |
64 | PREPROCESSOR SYMBOLS |
72 | PREPROCESSOR SYMBOLS |
65 | |
73 | |
66 | Libev can be configured via a variety of preprocessor symbols you have to define |
74 | 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 |
75 | before including any of its files. The default is not to build for multiplicity |
68 | and only include the select backend. |
76 | and only include the select backend. |
69 | |
77 | |
70 | EV_STANDALONE |
78 | EV_STANDALONE |
71 | |
79 | |
72 | Must always be "1", which keeps libev from including config.h or |
80 | Must always be "1", which keeps libev from including config.h or |
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96 | If undefined or defined to be "1", libev will compile in support |
104 | If undefined or defined to be "1", libev will compile in support |
97 | for the select(2) backend. No attempt at autodetection will be |
105 | for the select(2) backend. No attempt at autodetection will be |
98 | done: if no other method takes over, select will be it. Otherwise |
106 | done: if no other method takes over, select will be it. Otherwise |
99 | the select backend will not be compiled in. |
107 | the select backend will not be compiled in. |
100 | |
108 | |
101 | EV_SELECT_USE_WIN32_HANDLES |
109 | EV_SELECT_USE_FD_SET |
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110 | |
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111 | If defined to 1, then the select backend will use the system fd_set |
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112 | structure. This is useful if libev doesn't compile due to a missing |
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113 | NFDBITS or fd_mask definition or it misguesses the bitset layout on |
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114 | exotic systems. This usually limits the range of file descriptors |
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115 | to some low limit such as 1024 or might have other limitations |
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116 | (winsocket only allows 64 sockets). The FD_SETSIZE macro, set |
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117 | before compilation, might influence the size of the fd_set used. |
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118 | |
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119 | EV_SELECT_IS_WINSOCKET |
102 | |
120 | |
103 | When defined to 1, the select backend will assume that select |
121 | When defined to 1, the select backend will assume that select |
104 | doesn't understand file descriptors but wants osf handles on |
122 | doesn't understand file descriptors but wants osf handles on |
105 | win32 (this is the case when the select to be used is the winsock |
123 | win32 (this is the case when the select to be used is the winsock |
106 | select). This means that it will call _get_osfhandle on the fd to |
124 | select). This means that it will call _get_osfhandle on the fd to |
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108 | platforms. |
126 | platforms. |
109 | |
127 | |
110 | EV_USE_POLL |
128 | EV_USE_POLL |
111 | |
129 | |
112 | If defined to be "1", libev will compile in support for the poll(2) |
130 | 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 |
131 | backend. Otherwise it will be enabled on non-win32 platforms. It |
114 | performs worse than select, so its not enabled by default (it is |
132 | takes precedence over select. |
115 | also slightly less portable). |
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116 | |
133 | |
117 | EV_USE_EPOLL |
134 | EV_USE_EPOLL |
118 | |
135 | |
119 | If defined to be "1", libev will compile in support for the Linux |
136 | If defined to be "1", libev will compile in support for the Linux |
120 | epoll backend. Its availability will be detected at runtime, |
137 | epoll backend. Its availability will be detected at runtime, |
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124 | EV_USE_KQUEUE |
141 | EV_USE_KQUEUE |
125 | |
142 | |
126 | If defined to be "1", libev will compile in support for the BSD |
143 | If defined to be "1", libev will compile in support for the BSD |
127 | style kqueue backend. Its availability will be detected at runtime, |
144 | style kqueue backend. Its availability will be detected at runtime, |
128 | otherwise another method will be used as fallback. This is the |
145 | otherwise another method will be used as fallback. This is the |
129 | preferred backend for BSD and BSd-like systems. Darwin brokenness |
146 | preferred backend for BSD and BSD-like systems. Darwin brokenness |
130 | will be detected at runtime and routed around by disabling this |
147 | will be detected at runtime and routed around by disabling this |
131 | backend. |
148 | backend. |
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149 | |
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150 | EV_USE_PORT |
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151 | |
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152 | If defined to be "1", libev will compile in support for the Solaris |
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153 | 10 port style backend. Its availability will be detected at runtime, |
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154 | otherwise another method will be used as fallback. This is the |
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155 | preferred backend for Solaris 10 systems. |
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156 | |
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157 | EV_USE_DEVPOLL |
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158 | |
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159 | reserved for future expansion, works like the USE symbols above. |
132 | |
160 | |
133 | EV_H |
161 | EV_H |
134 | |
162 | |
135 | The name of the ev.h header file used to include it. The default |
163 | 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 |
164 | if undefined is <ev.h> in event.h and "ev.h" in ev.c. This can |
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139 | |
167 | |
140 | EV_EVENT_H |
168 | EV_EVENT_H |
141 | |
169 | |
142 | Similarly to EV_H, this macro cna be used to override event.c's idea |
170 | 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. |
171 | of how the event.h header can be found. |
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172 | |
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173 | EV_PROTOTYPES |
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174 | |
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175 | If defined to be "0", then "ev.h" will not define any function |
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176 | prototypes, but still define all the structs and other |
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177 | symbols. This is occasionally useful. |
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178 | |
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179 | EV_MULTIPLICITY |
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180 | |
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181 | If undefined or defined to "1", then all event-loop-specific |
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182 | functions will have the "struct ev_loop *" as first argument, and |
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183 | you can create additional independent event loops. Otherwise there |
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184 | will be no support for multiple event loops and there is no first |
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185 | event loop pointer argument. Instead, all functions act on the |
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186 | single default loop. |
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187 | |
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188 | EV_PERIODICS |
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189 | |
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190 | If undefined or defined to be "1", then periodic timers are |
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191 | supported, otherwise not. This saves a few kb of code. |
144 | |
192 | |
145 | EV_COMMON |
193 | EV_COMMON |
146 | |
194 | |
147 | By default, all watchers have a "void *data" member. By redefining |
195 | 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 |
196 | this macro to a something else you can include more and other types |
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153 | |
201 | |
154 | #define EV_COMMON \ |
202 | #define EV_COMMON \ |
155 | SV *self; /* contains this struct */ \ |
203 | SV *self; /* contains this struct */ \ |
156 | SV *cb_sv, *fh /* note no trailing ";" */ |
204 | SV *cb_sv, *fh /* note no trailing ";" */ |
157 | |
205 | |
158 | EV_PROTOTYPES |
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159 | |
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160 | If defined to be "0", then "ev.h" will not define any function |
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161 | prototypes, but still define all the structs and other |
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162 | symbols. This is occasionally useful. |
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163 | |
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164 | EV_MULTIPLICITY |
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165 | |
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166 | If undefined or defined to "1", then all event-loop-specific |
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167 | functions will have the "struct ev_loop *" as first argument, and |
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168 | you can create additional independent event loops. Otherwise there |
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169 | will be no support for multiple event loops and there is no first |
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170 | event loop pointer argument. Instead, all functions act on the |
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171 | single default loop. |
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172 | |
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173 | EV_CB_DECLARE(type) |
206 | EV_CB_DECLARE(type) |
174 | EV_CB_INVOKE(watcher,revents) |
207 | EV_CB_INVOKE(watcher,revents) |
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208 | ev_set_cb(ev,cb) |
175 | |
209 | |
176 | Can be used to change the callback member declaration in each |
210 | Can be used to change the callback member declaration in each |
177 | watcher, and the way callbacks are invoked. Must expand to a struct |
211 | watcher, and the way callbacks are invoked and set. Must expand |
178 | member definition and a statement, respectively. See the ev.v |
212 | to a struct member definition and a statement, respectively. See |
179 | header file for their default definitions. One possible use for overriding |
213 | the ev.v header file for their default definitions. One possible |
180 | these is to avoid the ev_loop pointer as first argument in all cases, or |
214 | use for overriding these is to avoid the ev_loop pointer as first |
181 | to use method calls instead of plain function calls in C++. |
215 | argument in all cases, or to use method calls instead of plain |
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216 | function calls in C++. |
182 | |
217 | |
183 | EXAMPLES |
218 | EXAMPLES |
184 | |
219 | |
185 | For a real-world example of a program the includes libev |
220 | For a real-world example of a program the includes libev |
186 | verbatim, you can have a look at the EV perl module |
221 | verbatim, you can have a look at the EV perl module |