… | |
… | |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
30 | */ |
31 | |
31 | |
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|
32 | #ifndef _WIN32 |
32 | /* for unix systems */ |
33 | /* for unix systems */ |
33 | #if WIN32 |
34 | # include <sys/select.h> |
34 | typedef unsigned int uint32_t; |
35 | # include <inttypes.h> |
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36 | #endif |
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37 | |
35 | # ifndef EV_SELECT_USE_FD_SET |
38 | #ifndef EV_SELECT_USE_FD_SET |
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39 | # ifdef NFDBITS |
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40 | # define EV_SELECT_USE_FD_SET 0 |
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41 | # else |
36 | # define EV_SELECT_USE_FD_SET 1 |
42 | # define EV_SELECT_USE_FD_SET 1 |
37 | # endif |
43 | # endif |
38 | #else |
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39 | # include <sys/select.h> |
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40 | # include <inttypes.h> |
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41 | #endif |
44 | #endif |
42 | |
45 | |
43 | #if EV_SELECT_USE_WIN32_HANDLES |
46 | #if EV_SELECT_IS_WINSOCKET |
44 | # undef EV_SELECT_USE_FD_SET |
47 | # undef EV_SELECT_USE_FD_SET |
45 | # define EV_SELECT_USE_FD_SET 1 |
48 | # define EV_SELECT_USE_FD_SET 1 |
46 | #else |
49 | # undef EINTR |
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50 | # define EINTR WSAEINTR |
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51 | # undef EBADF |
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52 | # define EBADF WSAENOTSOCK |
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53 | # undef ENOMEM |
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54 | # define ENOMEM (errno + 1) |
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55 | #endif |
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56 | |
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57 | #if !EV_SELECT_USE_FD_SET |
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58 | # define NFDBYTES (NFDBITS / 8) |
47 | #endif |
59 | #endif |
48 | |
60 | |
49 | #include <string.h> |
61 | #include <string.h> |
50 | |
62 | |
51 | static void |
63 | static void |
52 | select_modify (EV_P_ int fd, int oev, int nev) |
64 | select_modify (EV_P_ int fd, int oev, int nev) |
53 | { |
65 | { |
54 | if (oev == nev) |
66 | if (oev == nev) |
55 | return; |
67 | return; |
56 | |
68 | |
57 | #if EV_SELECT_USE_FD_SET |
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58 | # if EV_SELECT_USE_WIN32_HANDLES |
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59 | fd = _get_osfhandle (fd); |
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60 | if (fd < 0) |
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61 | return; |
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62 | # endif |
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63 | |
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64 | if (nev & EV_READ) |
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65 | FD_SET (fd, (struct fd_set *)vec_ri); |
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66 | else |
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67 | FD_CLR (fd, (struct fd_set *)vec_ri); |
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68 | |
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69 | if (nev & EV_WRITE) |
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70 | FD_SET (fd, (struct fd_set *)vec_wi); |
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71 | else |
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72 | FD_CLR (fd, (struct fd_set *)vec_wi); |
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73 | #else |
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74 | { |
69 | { |
75 | int offs = fd >> 3; |
70 | #if EV_SELECT_USE_FD_SET |
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71 | |
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72 | #if EV_SELECT_IS_WINSOCKET |
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73 | SOCKET handle = anfds [fd].handle; |
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74 | #else |
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75 | int handle = fd; |
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76 | #endif |
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77 | |
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78 | if (nev & EV_READ) |
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79 | FD_SET (handle, (fd_set *)vec_ri); |
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80 | else |
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81 | FD_CLR (handle, (fd_set *)vec_ri); |
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82 | |
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83 | if (nev & EV_WRITE) |
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84 | FD_SET (handle, (fd_set *)vec_wi); |
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85 | else |
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86 | FD_CLR (handle, (fd_set *)vec_wi); |
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87 | |
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88 | #else |
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89 | |
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90 | int word = fd / NFDBITS; |
76 | int mask = 1 << (fd & 7); |
91 | int mask = 1UL << (fd % NFDBITS); |
77 | |
92 | |
78 | if (vec_max < (fd >> 5) + 1) |
93 | if (expect_false (vec_max < word + 1)) |
79 | { |
94 | { |
80 | int new_max = (fd >> 5) + 1; |
95 | int new_max = word + 1; |
81 | |
96 | |
82 | vec_ri = (unsigned char *)ev_realloc (vec_ri, new_max * 4); |
97 | vec_ri = ev_realloc (vec_ri, new_max * NFDBYTES); |
83 | vec_ro = (unsigned char *)ev_realloc (vec_ro, new_max * 4); /* could free/malloc */ |
98 | vec_ro = ev_realloc (vec_ro, new_max * NFDBYTES); /* could free/malloc */ |
84 | vec_wi = (unsigned char *)ev_realloc (vec_wi, new_max * 4); |
99 | vec_wi = ev_realloc (vec_wi, new_max * NFDBYTES); |
85 | vec_wo = (unsigned char *)ev_realloc (vec_wo, new_max * 4); /* could free/malloc */ |
100 | vec_wo = ev_realloc (vec_wo, new_max * NFDBYTES); /* could free/malloc */ |
86 | |
101 | |
87 | for (; vec_max < new_max; ++vec_max) |
102 | for (; vec_max < new_max; ++vec_max) |
88 | ((uint32_t *)vec_ri)[vec_max] = |
103 | ((fd_mask *)vec_ri)[vec_max] = |
89 | ((uint32_t *)vec_wi)[vec_max] = 0; |
104 | ((fd_mask *)vec_wi)[vec_max] = 0; |
90 | } |
105 | } |
91 | |
106 | |
92 | vec_ri [offs] |= mask; |
107 | ((fd_mask *)vec_ri) [word] |= mask; |
93 | if (!(nev & EV_READ)) |
108 | if (!(nev & EV_READ)) |
94 | vec_ri [offs] &= ~mask; |
109 | ((fd_mask *)vec_ri) [word] &= ~mask; |
95 | |
110 | |
96 | vec_wi [offs] |= mask; |
111 | ((fd_mask *)vec_wi) [word] |= mask; |
97 | if (!(nev & EV_WRITE)) |
112 | if (!(nev & EV_WRITE)) |
98 | vec_wi [offs] &= ~mask; |
113 | ((fd_mask *)vec_wi) [word] &= ~mask; |
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114 | #endif |
99 | } |
115 | } |
100 | #endif |
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101 | } |
116 | } |
102 | |
117 | |
103 | static void |
118 | static void |
104 | select_poll (EV_P_ ev_tstamp timeout) |
119 | select_poll (EV_P_ ev_tstamp timeout) |
105 | { |
120 | { |
106 | int word, offs; |
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107 | struct timeval tv; |
121 | struct timeval tv; |
108 | int res; |
122 | int res; |
109 | |
123 | |
110 | #if EV_SELECT_USE_FD_SET |
124 | #if EV_SELECT_USE_FD_SET |
111 | memcpy (vec_ro, vec_ri, sizeof (struct fd_set)); |
125 | memcpy (vec_ro, vec_ri, sizeof (fd_set)); |
112 | memcpy (vec_wo, vec_wi, sizeof (struct fd_set)); |
126 | memcpy (vec_wo, vec_wi, sizeof (fd_set)); |
113 | #else |
127 | #else |
114 | memcpy (vec_ro, vec_ri, vec_max * 4); |
128 | memcpy (vec_ro, vec_ri, vec_max * NFDBYTES); |
115 | memcpy (vec_wo, vec_wi, vec_max * 4); |
129 | memcpy (vec_wo, vec_wi, vec_max * NFDBYTES); |
116 | #endif |
130 | #endif |
117 | |
131 | |
118 | tv.tv_sec = (long)timeout; |
132 | tv.tv_sec = (long)timeout; |
119 | tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6); |
133 | tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6); |
120 | |
134 | |
121 | res = select (vec_max * 32, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv); |
135 | res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv); |
122 | |
136 | |
123 | if (res < 0) |
137 | if (expect_false (res < 0)) |
124 | { |
138 | { |
125 | #ifdef WIN32 |
139 | #if EV_SELECT_IS_WINSOCKET |
126 | if (errno == WSAEINTR ) errno = EINTR; |
140 | errno = WSAGetLastError (); |
127 | if (errno == WSAENOTSOCK) errno = EBADF; |
141 | #endif |
128 | #endif |
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129 | |
142 | |
130 | if (errno == EBADF) |
143 | if (errno == EBADF) |
131 | fd_ebadf (EV_A); |
144 | fd_ebadf (EV_A); |
132 | else if (errno == ENOMEM && !syserr_cb) |
145 | else if (errno == ENOMEM && !syserr_cb) |
133 | fd_enomem (EV_A); |
146 | fd_enomem (EV_A); |
… | |
… | |
136 | |
149 | |
137 | return; |
150 | return; |
138 | } |
151 | } |
139 | |
152 | |
140 | #if EV_SELECT_USE_FD_SET |
153 | #if EV_SELECT_USE_FD_SET |
141 | # if EV_SELECT_USE_WIN32_HANDLES |
154 | |
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155 | { |
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156 | int fd; |
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157 | |
142 | for (word = 0; word < anfdmax; ++word) |
158 | for (fd = 0; fd < anfdmax; ++fd) |
143 | { |
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144 | if (!anfd [word].events) |
159 | if (anfds [fd].events) |
145 | { |
160 | { |
146 | int fd = _get_osfhandle (word); |
161 | int events = 0; |
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162 | #if EV_SELECT_IS_WINSOCKET |
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163 | SOCKET handle = anfds [fd].handle; |
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164 | #else |
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165 | int handle = fd; |
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166 | #endif |
147 | |
167 | |
148 | if (fd >= 0) |
168 | if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ; |
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169 | if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE; |
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170 | |
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171 | if (expect_true (events)) |
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172 | fd_event (EV_A_ fd, events); |
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173 | } |
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174 | } |
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175 | |
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176 | #else |
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177 | |
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178 | { |
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179 | int word, bit; |
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180 | for (word = vec_max; word--; ) |
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181 | { |
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182 | fd_mask word_r = ((fd_mask *)vec_ro) [word]; |
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183 | fd_mask word_w = ((fd_mask *)vec_wo) [word]; |
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184 | |
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185 | if (word_r || word_w) |
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186 | for (bit = NFDBITS; bit--; ) |
149 | { |
187 | { |
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188 | fd_mask mask = 1UL << bit; |
150 | int events = 0; |
189 | int events = 0; |
151 | |
190 | |
152 | if (FD_ISSET (fd, (struct fd_set *)vec_ro)) events |= EV_READ; |
191 | events |= word_r & mask ? EV_READ : 0; |
153 | if (FD_ISSET (fd, (struct fd_set *)vec_wo)) events |= EV_WRITE; |
192 | events |= word_w & mask ? EV_WRITE : 0; |
154 | |
193 | |
155 | if (events) |
194 | if (expect_true (events)) |
156 | fd_event (EV_A_ word, events); |
195 | fd_event (EV_A_ word * NFDBITS + bit, events); |
157 | } |
196 | } |
158 | } |
197 | } |
159 | } |
198 | } |
160 | # else |
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161 | for (word = 0; word < FD_SETSIZE; ++word) |
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162 | { |
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163 | int events = 0; |
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164 | if (FD_ISSET (word, (struct fd_set *)vec_ro)) events |= EV_READ; |
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165 | if (FD_ISSET (word, (struct fd_set *)vec_wo)) events |= EV_WRITE; |
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166 | |
199 | |
167 | if (events) |
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168 | fd_event (EV_A_ word, events); |
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169 | } |
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170 | # endif |
200 | #endif |
171 | #else |
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172 | for (word = vec_max; word--; ) |
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173 | { |
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174 | if (((uint32_t *)vec_ro) [word] | ((uint32_t *)vec_wo) [word]) |
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175 | for (offs = 4; offs--; ) |
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176 | { |
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177 | int idx = word * 4 + offs; |
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178 | unsigned char byte_r = vec_ro [idx]; |
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179 | unsigned char byte_w = vec_wo [idx]; |
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180 | int bit; |
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181 | |
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182 | if (byte_r | byte_w) |
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183 | for (bit = 8; bit--; ) |
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184 | { |
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185 | int events = 0; |
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186 | events |= byte_r & (1 << bit) ? EV_READ : 0; |
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187 | events |= byte_w & (1 << bit) ? EV_WRITE : 0; |
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188 | |
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189 | if (events) |
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190 | fd_event (EV_A_ idx * 8 + bit, events); |
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191 | } |
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192 | } |
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193 | } |
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194 | #endif |
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195 | } |
201 | } |
196 | |
202 | |
197 | static int |
203 | int inline_size |
198 | select_init (EV_P_ int flags) |
204 | select_init (EV_P_ int flags) |
199 | { |
205 | { |
200 | method_fudge = 1e-2; /* needed to compensate for select returning early, very conservative */ |
206 | backend_fudge = 1e-2; /* needed to compensate for select returning early, very conservative */ |
201 | method_modify = select_modify; |
207 | backend_modify = select_modify; |
202 | method_poll = select_poll; |
208 | backend_poll = select_poll; |
203 | |
209 | |
204 | #if EV_SELECT_USE_FD_SET |
210 | #if EV_SELECT_USE_FD_SET |
205 | vec_max = FD_SETSIZE / 32; |
211 | vec_max = FD_SETSIZE / 32; |
206 | vec_ri = ev_malloc (sizeof (struct fd_set)); FD_ZERO ((struct fd_set *)vec_ri); |
212 | vec_ri = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_ri); |
207 | vec_ro = ev_malloc (sizeof (struct fd_set)); |
213 | vec_ro = ev_malloc (sizeof (fd_set)); |
208 | vec_wi = ev_malloc (sizeof (struct fd_set)); FD_ZERO ((struct fd_set *)vec_wi); |
214 | vec_wi = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_wi); |
209 | vec_wo = ev_malloc (sizeof (struct fd_set)); |
215 | vec_wo = ev_malloc (sizeof (fd_set)); |
210 | #else |
216 | #else |
211 | vec_max = 0; |
217 | vec_max = 0; |
212 | vec_ri = 0; |
218 | vec_ri = 0; |
213 | vec_ri = 0; |
219 | vec_ri = 0; |
214 | vec_wo = 0; |
220 | vec_wo = 0; |
215 | vec_wo = 0; |
221 | vec_wo = 0; |
216 | #endif |
222 | #endif |
217 | |
223 | |
218 | return EVMETHOD_SELECT; |
224 | return EVBACKEND_SELECT; |
219 | } |
225 | } |
220 | |
226 | |
221 | static void |
227 | void inline_size |
222 | select_destroy (EV_P) |
228 | select_destroy (EV_P) |
223 | { |
229 | { |
224 | ev_free (vec_ri); |
230 | ev_free (vec_ri); |
225 | ev_free (vec_ro); |
231 | ev_free (vec_ro); |
226 | ev_free (vec_wi); |
232 | ev_free (vec_wi); |