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1 #ifndef __IOLOOP_H
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2 #define __IOLOOP_H
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3
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4 #include <time.h>
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5
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6 #define IO_READ (1 << 0)
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7 #define IO_WRITE (1 << 1)
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8
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9 #define IO_PRIORITY_LOW 100
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10 #define IO_PRIORITY_DEFAULT 0
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11 #define IO_PRIORITY_HIGH -100
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12
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13 typedef void (*IOFunc) (void *user_data, int fd, IO io);
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14 typedef void (*TimeoutFunc) (void *user_data, Timeout timeout);
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15
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16 /* Time when the I/O loop started calling handlers.
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17 Can be used instead of time(NULL). */
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18 extern time_t ioloop_time;
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19 extern struct timeval ioloop_timeval;
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20
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21 /* I/O listeners - you can create different handlers for IO_READ and IO_WRITE,
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22 but make sure you don't create multiple handlers of same type, it's not
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23 checked and removing one will stop the other from working as well. */
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24 IO io_add(int fd, int condition, IOFunc func, void *user_data);
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25 IO io_add_priority(int fd, int priority, int condition,
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26 IOFunc func, void *user_data);
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27 void io_remove(IO io);
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28
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29 /* Timeout handlers */
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30 Timeout timeout_add(int msecs, TimeoutFunc func, void *user_data);
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31 void timeout_remove(Timeout timeout);
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32
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33 void io_loop_run(IOLoop ioloop);
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34 void io_loop_stop(IOLoop ioloop); /* safe to run in signal handler */
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35
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36 /* call these if you wish to run the iteration only once */
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37 void io_loop_set_running(IOLoop ioloop);
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38 void io_loop_handler_run(IOLoop ioloop);
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39
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40 IOLoop io_loop_create(void);
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41 void io_loop_destroy(IOLoop ioloop);
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42
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43 #endif
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