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@ -32,6 +32,7 @@ |
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/* for unix systems */ |
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#ifdef WIN32 |
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typedef unsigned int uint32_t; |
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# define EV_SELECT_USE_FD_SET 1 |
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#else |
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# include <sys/select.h> |
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# include <inttypes.h> |
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@ -42,33 +43,47 @@ typedef unsigned int uint32_t; |
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static void |
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select_modify (EV_P_ int fd, int oev, int nev) |
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{ |
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int offs = fd >> 3; |
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int mask = 1 << (fd & 7); |
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if (oev == nev) |
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return; |
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if (vec_max < (fd >> 5) + 1) |
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{ |
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int new_max = (fd >> 5) + 1; |
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vec_ri = (unsigned char *)ev_realloc (vec_ri, new_max * 4); |
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vec_ro = (unsigned char *)ev_realloc (vec_ro, new_max * 4); /* could free/malloc */ |
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vec_wi = (unsigned char *)ev_realloc (vec_wi, new_max * 4); |
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vec_wo = (unsigned char *)ev_realloc (vec_wo, new_max * 4); /* could free/malloc */ |
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for (; vec_max < new_max; ++vec_max) |
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((uint32_t *)vec_ri)[vec_max] = |
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((uint32_t *)vec_wi)[vec_max] = 0; |
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} |
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vec_ri [offs] |= mask; |
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if (!(nev & EV_READ)) |
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vec_ri [offs] &= ~mask; |
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#if EV_SELECT_USE_FD_SET |
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if (nev & EV_READ) |
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FD_SET (fd, (struct fd_set *)vec_ri); |
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else |
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FD_CLR (fd, (struct fd_set *)vec_ri); |
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vec_wi [offs] |= mask; |
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if (!(nev & EV_WRITE)) |
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vec_wi [offs] &= ~mask; |
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if (nev & EV_WRITE) |
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FD_SET (fd, (struct fd_set *)vec_wi); |
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else |
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FD_CLR (fd, (struct fd_set *)vec_wi); |
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#else |
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{ |
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int offs = fd >> 3; |
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int mask = 1 << (fd & 7); |
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if (vec_max < (fd >> 5) + 1) |
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{ |
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int new_max = (fd >> 5) + 1; |
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vec_ri = (unsigned char *)ev_realloc (vec_ri, new_max * 4); |
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vec_ro = (unsigned char *)ev_realloc (vec_ro, new_max * 4); /* could free/malloc */ |
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vec_wi = (unsigned char *)ev_realloc (vec_wi, new_max * 4); |
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vec_wo = (unsigned char *)ev_realloc (vec_wo, new_max * 4); /* could free/malloc */ |
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for (; vec_max < new_max; ++vec_max) |
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((uint32_t *)vec_ri)[vec_max] = |
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((uint32_t *)vec_wi)[vec_max] = 0; |
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} |
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vec_ri [offs] |= mask; |
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if (!(nev & EV_READ)) |
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vec_ri [offs] &= ~mask; |
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vec_wi [offs] |= mask; |
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if (!(nev & EV_WRITE)) |
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vec_wi [offs] &= ~mask; |
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} |
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#endif |
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} |
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static void |
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@ -78,8 +93,13 @@ select_poll (EV_P_ ev_tstamp timeout) |
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struct timeval tv; |
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int res; |
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#if EV_SELECT_USE_FD_SET |
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memcpy (vec_ro, vec_ri, sizeof (struct fd_set)); |
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memcpy (vec_wo, vec_wi, sizeof (struct fd_set)); |
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#else |
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memcpy (vec_ro, vec_ri, vec_max * 4); |
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memcpy (vec_wo, vec_wi, vec_max * 4); |
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#endif |
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tv.tv_sec = (long)timeout; |
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tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6); |
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@ -88,6 +108,11 @@ select_poll (EV_P_ ev_tstamp timeout) |
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if (res < 0) |
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{ |
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#ifdef WIN32 |
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if (errno == WSAEINTR ) errno = EINTR; |
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if (errno == WSAENOTSOCK) errno = EBADF; |
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#endif |
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if (errno == EBADF) |
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fd_ebadf (EV_A); |
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else if (errno == ENOMEM && !syserr_cb) |
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@ -98,6 +123,17 @@ select_poll (EV_P_ ev_tstamp timeout) |
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return; |
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} |
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#if EV_SELECT_USE_FD_SET |
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for (word = 0; word < FD_SETSIZE; ++word) |
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{ |
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int events = 0; |
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if (FD_ISSET (word, (struct fd_set *)vec_ro)) events |= EV_READ; |
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if (FD_ISSET (word, (struct fd_set *)vec_wo)) events |= EV_WRITE; |
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if (events) |
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fd_event (EV_A_ word, events); |
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} |
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#else |
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for (word = vec_max; word--; ) |
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{ |
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if (((uint32_t *)vec_ro) [word] | ((uint32_t *)vec_wo) [word]) |
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@ -120,6 +156,7 @@ select_poll (EV_P_ ev_tstamp timeout) |
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} |
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} |
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} |
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#endif |
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} |
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static int |
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@ -129,11 +166,19 @@ select_init (EV_P_ int flags) |
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method_modify = select_modify; |
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method_poll = select_poll; |
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#if EV_SELECT_USE_FD_SET |
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vec_max = FD_SETSIZE / 32; |
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vec_ri = ev_malloc (sizeof (struct fd_set)); FD_ZERO ((struct fd_set *)vec_ri); |
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vec_ro = ev_malloc (sizeof (struct fd_set)); |
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vec_wi = ev_malloc (sizeof (struct fd_set)); FD_ZERO ((struct fd_set *)vec_wi); |
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vec_wo = ev_malloc (sizeof (struct fd_set)); |
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#else |
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vec_max = 0; |
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vec_ri = 0; |
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vec_ri = 0; |
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vec_wo = 0; |
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vec_wo = 0; |
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#endif |
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return EVMETHOD_SELECT; |
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} |
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