| 1 | /* |
1 | /* |
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2 | * libev select fd activity backend |
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3 | * |
| 2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
| 3 | * All rights reserved. |
5 | * All rights reserved. |
| 4 | * |
6 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
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| 68 | vec_wi [offs] |= mask; |
70 | vec_wi [offs] |= mask; |
| 69 | if (!(nev & EV_WRITE)) |
71 | if (!(nev & EV_WRITE)) |
| 70 | vec_wi [offs] &= ~mask; |
72 | vec_wi [offs] &= ~mask; |
| 71 | } |
73 | } |
| 72 | |
74 | |
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75 | static void |
| 73 | static void select_poll (ev_tstamp timeout) |
76 | select_poll (ev_tstamp timeout) |
| 74 | { |
77 | { |
| 75 | struct timeval tv; |
78 | struct timeval tv; |
| 76 | int res; |
79 | int res; |
| 77 | |
80 | |
| 78 | memcpy (vec_ro, vec_ri, vec_max * 4); |
81 | memcpy (vec_ro, vec_ri, vec_max * 4); |
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… | |
| 111 | } |
114 | } |
| 112 | } |
115 | } |
| 113 | else if (res < 0) |
116 | else if (res < 0) |
| 114 | { |
117 | { |
| 115 | if (errno == EBADF) |
118 | if (errno == EBADF) |
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119 | fd_ebadf (); |
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120 | else if (errno == ENOMEM) |
| 116 | fd_recheck (); |
121 | fd_enomem (); |
| 117 | } |
122 | } |
| 118 | } |
123 | } |
| 119 | |
124 | |
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125 | static void |
| 120 | void select_init (int flags) |
126 | select_init (int flags) |
| 121 | { |
127 | { |
| 122 | ev_method = EVMETHOD_SELECT; |
128 | ev_method = EVMETHOD_SELECT; |
| 123 | method_fudge = 1e-2; /* needed to compensate for select returning early, very conservative */ |
129 | method_fudge = 1e-2; /* needed to compensate for select returning early, very conservative */ |
| 124 | method_modify = select_modify; |
130 | method_modify = select_modify; |
| 125 | method_poll = select_poll; |
131 | method_poll = select_poll; |
| 126 | } |
132 | } |
| 127 | |
133 | |
| 128 | |
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