1 | /* |
1 | /* |
2 | * libevent compatibility layer |
2 | * libevent compatibility layer |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2012 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
61 | int dummy; |
61 | int dummy; |
62 | }; |
62 | }; |
63 | |
63 | |
64 | static struct event_base *ev_x_cur; |
64 | static struct event_base *ev_x_cur; |
65 | |
65 | |
66 | static void |
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67 | ev_tv_set (struct timeval *tv, ev_tstamp at) |
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68 | { |
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69 | tv->tv_sec = (long)at; |
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70 | tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6); |
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71 | } |
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72 | |
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73 | static ev_tstamp |
66 | static ev_tstamp |
74 | ev_tv_get (struct timeval *tv) |
67 | ev_tv_get (struct timeval *tv) |
75 | { |
68 | { |
76 | if (tv) |
69 | if (tv) |
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70 | { |
77 | return tv->tv_sec + tv->tv_usec * 1e-6; |
71 | ev_tstamp after = tv->tv_sec + tv->tv_usec * 1e-6; |
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72 | return after ? after : 1e-6; |
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73 | } |
78 | else |
74 | else |
79 | return -1.; |
75 | return -1.; |
80 | } |
76 | } |
81 | |
77 | |
82 | #define EVENT_VERSION(a,b) # a "." # b |
78 | #define EVENT_STRINGIFY(s) # s |
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79 | #define EVENT_VERSION(a,b) EVENT_STRINGIFY (a) "." EVENT_STRINGIFY (b) |
83 | |
80 | |
84 | const char *event_get_version (void) |
81 | const char *event_get_version (void) |
85 | { |
82 | { |
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83 | /* returns ABI, not API or library, version */ |
86 | return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR); |
84 | return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR); |
87 | } |
85 | } |
88 | |
86 | |
89 | const char *event_get_method (void) |
87 | const char *event_get_method (void) |
90 | { |
88 | { |
… | |
… | |
97 | if (ev_x_cur) |
95 | if (ev_x_cur) |
98 | ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO); |
96 | ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO); |
99 | else |
97 | else |
100 | ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO); |
98 | ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO); |
101 | #else |
99 | #else |
102 | assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur)); |
100 | assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur)); |
103 | |
101 | |
104 | ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO); |
102 | ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO); |
105 | #endif |
103 | #endif |
106 | |
104 | |
107 | return ev_x_cur; |
105 | return ev_x_cur; |
… | |
… | |
110 | void event_base_free (struct event_base *base) |
108 | void event_base_free (struct event_base *base) |
111 | { |
109 | { |
112 | dLOOPbase; |
110 | dLOOPbase; |
113 | |
111 | |
114 | #if EV_MULTIPLICITY |
112 | #if EV_MULTIPLICITY |
115 | if (ev_default_loop (EVFLAG_AUTO) != loop) |
113 | if (!ev_is_default_loop (loop)) |
116 | ev_loop_destroy (loop); |
114 | ev_loop_destroy (loop); |
117 | #endif |
115 | #endif |
118 | } |
116 | } |
119 | |
117 | |
120 | int event_dispatch (void) |
118 | int event_dispatch (void) |
… | |
… | |
140 | } |
138 | } |
141 | |
139 | |
142 | static void |
140 | static void |
143 | ev_x_cb (struct event *ev, int revents) |
141 | ev_x_cb (struct event *ev, int revents) |
144 | { |
142 | { |
145 | revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL; |
143 | revents &= EV_READ | EV_WRITE | EV_TIMER | EV_SIGNAL; |
146 | |
144 | |
147 | ev->ev_res = revents; |
145 | ev->ev_res = revents; |
148 | ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg); |
146 | ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg); |
149 | } |
147 | } |
150 | |
148 | |
… | |
… | |
298 | if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to)) |
296 | if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to)) |
299 | { |
297 | { |
300 | revents |= EV_TIMEOUT; |
298 | revents |= EV_TIMEOUT; |
301 | |
299 | |
302 | if (tv) |
300 | if (tv) |
303 | ev_tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */ |
301 | { |
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302 | ev_tstamp at = ev_now (EV_A); |
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303 | |
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304 | tv->tv_sec = (long)at; |
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305 | tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6); |
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306 | } |
304 | } |
307 | } |
305 | |
308 | |
306 | return events & revents; |
309 | return events & revents; |
307 | } |
310 | } |
308 | |
311 | |
… | |
… | |
327 | |
330 | |
328 | int event_base_loop (struct event_base *base, int flags) |
331 | int event_base_loop (struct event_base *base, int flags) |
329 | { |
332 | { |
330 | dLOOPbase; |
333 | dLOOPbase; |
331 | |
334 | |
332 | ev_loop (EV_A_ flags); |
335 | ev_run (EV_A_ flags); |
333 | |
336 | |
334 | return 0; |
337 | return 0; |
335 | } |
338 | } |
336 | |
339 | |
337 | int event_base_dispatch (struct event_base *base) |
340 | int event_base_dispatch (struct event_base *base) |
… | |
… | |
342 | static void |
345 | static void |
343 | ev_x_loopexit_cb (int revents, void *base) |
346 | ev_x_loopexit_cb (int revents, void *base) |
344 | { |
347 | { |
345 | dLOOPbase; |
348 | dLOOPbase; |
346 | |
349 | |
347 | ev_unloop (EV_A_ EVUNLOOP_ONE); |
350 | ev_break (EV_A_ EVBREAK_ONE); |
348 | } |
351 | } |
349 | |
352 | |
350 | int event_base_loopexit (struct event_base *base, struct timeval *tv) |
353 | int event_base_loopexit (struct event_base *base, struct timeval *tv) |
351 | { |
354 | { |
352 | ev_tstamp after = ev_tv_get (tv); |
355 | ev_tstamp after = ev_tv_get (tv); |