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33 | #include <sys/time.h> |
33 | #include <sys/time.h> |
34 | #include <sys/types.h> |
34 | #include <sys/types.h> |
35 | #include <unistd.h> |
35 | #include <unistd.h> |
36 | |
36 | |
37 | /* for unix systems */ |
37 | /* for unix systems */ |
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38 | #ifndef WIN32 |
38 | #include <sys/select.h> |
39 | # include <sys/select.h> |
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40 | #endif |
39 | |
41 | |
40 | #include <string.h> |
42 | #include <string.h> |
41 | #include <inttypes.h> |
43 | #include <inttypes.h> |
42 | |
44 | |
43 | static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo; |
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44 | static int vec_max; |
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45 | |
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46 | static void |
45 | static void |
47 | select_modify (int fd, int oev, int nev) |
46 | select_modify (EV_P_ int fd, int oev, int nev) |
48 | { |
47 | { |
49 | int offs = fd >> 3; |
48 | int offs = fd >> 3; |
50 | int mask = 1 << (fd & 7); |
49 | int mask = 1 << (fd & 7); |
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50 | |
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51 | if (oev == nev) |
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52 | return; |
51 | |
53 | |
52 | if (vec_max < (fd >> 5) + 1) |
54 | if (vec_max < (fd >> 5) + 1) |
53 | { |
55 | { |
54 | int new_max = (fd >> 5) + 1; |
56 | int new_max = (fd >> 5) + 1; |
55 | |
57 | |
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71 | if (!(nev & EV_WRITE)) |
73 | if (!(nev & EV_WRITE)) |
72 | vec_wi [offs] &= ~mask; |
74 | vec_wi [offs] &= ~mask; |
73 | } |
75 | } |
74 | |
76 | |
75 | static void |
77 | static void |
76 | select_poll (ev_tstamp timeout) |
78 | select_poll (EV_P_ ev_tstamp timeout) |
77 | { |
79 | { |
78 | struct timeval tv; |
80 | struct timeval tv; |
79 | int res; |
81 | int res; |
80 | |
82 | |
81 | memcpy (vec_ro, vec_ri, vec_max * 4); |
83 | memcpy (vec_ro, vec_ri, vec_max * 4); |
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106 | int events = 0; |
108 | int events = 0; |
107 | events |= byte_r & (1 << bit) ? EV_READ : 0; |
109 | events |= byte_r & (1 << bit) ? EV_READ : 0; |
108 | events |= byte_w & (1 << bit) ? EV_WRITE : 0; |
110 | events |= byte_w & (1 << bit) ? EV_WRITE : 0; |
109 | |
111 | |
110 | if (events) |
112 | if (events) |
111 | fd_event (idx * 8 + bit, events); |
113 | fd_event (EV_A_ idx * 8 + bit, events); |
112 | } |
114 | } |
113 | } |
115 | } |
114 | } |
116 | } |
115 | } |
117 | } |
116 | else if (res < 0) |
118 | else if (res < 0) |
117 | { |
119 | { |
118 | if (errno == EBADF) |
120 | if (errno == EBADF) |
119 | fd_recheck (); |
121 | fd_ebadf (EV_A); |
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122 | else if (errno == ENOMEM) |
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123 | fd_enomem (EV_A); |
120 | } |
124 | } |
121 | } |
125 | } |
122 | |
126 | |
123 | static void |
127 | static int |
124 | select_init (int flags) |
128 | select_init (EV_P_ int flags) |
125 | { |
129 | { |
126 | ev_method = EVMETHOD_SELECT; |
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127 | method_fudge = 1e-2; /* needed to compensate for select returning early, very conservative */ |
130 | method_fudge = 1e-2; /* needed to compensate for select returning early, very conservative */ |
128 | method_modify = select_modify; |
131 | method_modify = select_modify; |
129 | method_poll = select_poll; |
132 | method_poll = select_poll; |
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133 | |
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134 | vec_max = 0; |
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135 | vec_ri = 0; |
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136 | vec_ri = 0; |
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137 | vec_wo = 0; |
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138 | vec_wo = 0; |
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139 | |
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140 | return EVMETHOD_SELECT; |
130 | } |
141 | } |
131 | |
142 | |
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143 | static void |
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144 | select_destroy (EV_P) |
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145 | { |
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146 | free (vec_ri); |
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147 | free (vec_ro); |
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148 | free (vec_wi); |
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149 | free (vec_wo); |
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150 | } |
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151 | |
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152 | |