* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#ifndef _WIN32
/* for unix systems */
-#if WIN32
-typedef unsigned int uint32_t;
-# ifndef EV_SELECT_USE_FD_SET
-# define EV_SELECT_USE_FD_SET 1
-# endif
-#else
# include <sys/select.h>
# include <inttypes.h>
#endif
-#if EV_SELECT_USE_WIN32_HANDLES
+#ifndef EV_SELECT_USE_FD_SET
+# ifdef NFDBITS
+# define EV_SELECT_USE_FD_SET 0
+# else
+# define EV_SELECT_USE_FD_SET 1
+# endif
+#endif
+
+#if EV_SELECT_IS_WINSOCKET
# undef EV_SELECT_USE_FD_SET
# define EV_SELECT_USE_FD_SET 1
-#else
+# undef EINTR
+# define EINTR WSAEINTR
+# undef EBADF
+# define EBADF WSAENOTSOCK
+# undef ENOMEM
+# define ENOMEM (errno + 1)
+#endif
+
+#if !EV_SELECT_USE_FD_SET
+# define NFDBYTES (NFDBITS / 8)
#endif
#include <string.h>
if (oev == nev)
return;
+ {
#if EV_SELECT_USE_FD_SET
-# if EV_SELECT_USE_WIN32_HANDLES
- fd = _get_osfhandle (fd);
- if (fd < 0)
- return;
-# endif
- if (nev & EV_READ)
- FD_SET (fd, (struct fd_set *)vec_ri);
- else
- FD_CLR (fd, (struct fd_set *)vec_ri);
+ #if EV_SELECT_IS_WINSOCKET
+ SOCKET handle = anfds [fd].handle;
+ #else
+ int handle = fd;
+ #endif
+
+ if (nev & EV_READ)
+ FD_SET (handle, (fd_set *)vec_ri);
+ else
+ FD_CLR (handle, (fd_set *)vec_ri);
+
+ if (nev & EV_WRITE)
+ FD_SET (handle, (fd_set *)vec_wi);
+ else
+ FD_CLR (handle, (fd_set *)vec_wi);
- if (nev & EV_WRITE)
- FD_SET (fd, (struct fd_set *)vec_wi);
- else
- FD_CLR (fd, (struct fd_set *)vec_wi);
#else
- {
- int offs = fd >> 3;
- int mask = 1 << (fd & 7);
- if (vec_max < (fd >> 5) + 1)
+ int word = fd / NFDBITS;
+ int mask = 1UL << (fd % NFDBITS);
+
+ if (expect_false (vec_max < word + 1))
{
- int new_max = (fd >> 5) + 1;
+ int new_max = word + 1;
- vec_ri = (unsigned char *)ev_realloc (vec_ri, new_max * 4);
- vec_ro = (unsigned char *)ev_realloc (vec_ro, new_max * 4); /* could free/malloc */
- vec_wi = (unsigned char *)ev_realloc (vec_wi, new_max * 4);
- vec_wo = (unsigned char *)ev_realloc (vec_wo, new_max * 4); /* could free/malloc */
+ vec_ri = ev_realloc (vec_ri, new_max * NFDBYTES);
+ vec_ro = ev_realloc (vec_ro, new_max * NFDBYTES); /* could free/malloc */
+ vec_wi = ev_realloc (vec_wi, new_max * NFDBYTES);
+ vec_wo = ev_realloc (vec_wo, new_max * NFDBYTES); /* could free/malloc */
for (; vec_max < new_max; ++vec_max)
- ((uint32_t *)vec_ri)[vec_max] =
- ((uint32_t *)vec_wi)[vec_max] = 0;
+ ((fd_mask *)vec_ri)[vec_max] =
+ ((fd_mask *)vec_wi)[vec_max] = 0;
}
- vec_ri [offs] |= mask;
+ ((fd_mask *)vec_ri) [word] |= mask;
if (!(nev & EV_READ))
- vec_ri [offs] &= ~mask;
+ ((fd_mask *)vec_ri) [word] &= ~mask;
- vec_wi [offs] |= mask;
+ ((fd_mask *)vec_wi) [word] |= mask;
if (!(nev & EV_WRITE))
- vec_wi [offs] &= ~mask;
- }
+ ((fd_mask *)vec_wi) [word] &= ~mask;
#endif
+ }
}
static void
select_poll (EV_P_ ev_tstamp timeout)
{
- int word, offs;
struct timeval tv;
int res;
#if EV_SELECT_USE_FD_SET
- memcpy (vec_ro, vec_ri, sizeof (struct fd_set));
- memcpy (vec_wo, vec_wi, sizeof (struct fd_set));
+ memcpy (vec_ro, vec_ri, sizeof (fd_set));
+ memcpy (vec_wo, vec_wi, sizeof (fd_set));
#else
- memcpy (vec_ro, vec_ri, vec_max * 4);
- memcpy (vec_wo, vec_wi, vec_max * 4);
+ memcpy (vec_ro, vec_ri, vec_max * NFDBYTES);
+ memcpy (vec_wo, vec_wi, vec_max * NFDBYTES);
#endif
tv.tv_sec = (long)timeout;
tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6);
- res = select (vec_max * 32, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
+ res = select (vec_max * NFDBITS, (fd_set *)vec_ro, (fd_set *)vec_wo, 0, &tv);
- if (res < 0)
+ if (expect_false (res < 0))
{
-#ifdef WIN32
- if (errno == WSAEINTR ) errno = EINTR;
- if (errno == WSAENOTSOCK) errno = EBADF;
-#endif
+ #if EV_SELECT_IS_WINSOCKET
+ errno = WSAGetLastError ();
+ #endif
if (errno == EBADF)
fd_ebadf (EV_A);
}
#if EV_SELECT_USE_FD_SET
-# if EV_SELECT_USE_WIN32_HANDLES
- for (word = 0; word < anfdmax; ++word)
- {
- if (!anfd [word].events)
+
+ {
+ int fd;
+
+ for (fd = 0; fd < anfdmax; ++fd)
+ if (anfds [fd].events)
{
- int fd = _get_osfhandle (word);
+ int events = 0;
+ #if EV_SELECT_IS_WINSOCKET
+ SOCKET handle = anfds [fd].handle;
+ #else
+ int handle = fd;
+ #endif
+
+ if (FD_ISSET (handle, (fd_set *)vec_ro)) events |= EV_READ;
+ if (FD_ISSET (handle, (fd_set *)vec_wo)) events |= EV_WRITE;
+
+ if (expect_true (events))
+ fd_event (EV_A_ fd, events);
+ }
+ }
- if (fd >= 0)
+#else
+
+ {
+ int word, bit;
+ for (word = vec_max; word--; )
+ {
+ fd_mask word_r = ((fd_mask *)vec_ro) [word];
+ fd_mask word_w = ((fd_mask *)vec_wo) [word];
+
+ if (word_r || word_w)
+ for (bit = NFDBITS; bit--; )
{
+ fd_mask mask = 1UL << bit;
int events = 0;
- if (FD_ISSET (fd, (struct fd_set *)vec_ro)) events |= EV_READ;
- if (FD_ISSET (fd, (struct fd_set *)vec_wo)) events |= EV_WRITE;
+ events |= word_r & mask ? EV_READ : 0;
+ events |= word_w & mask ? EV_WRITE : 0;
- if (events)
- fd_event (EV_A_ word, events);
+ if (expect_true (events))
+ fd_event (EV_A_ word * NFDBITS + bit, events);
}
- }
- }
-# else
- for (word = 0; word < FD_SETSIZE; ++word)
- {
- int events = 0;
- if (FD_ISSET (word, (struct fd_set *)vec_ro)) events |= EV_READ;
- if (FD_ISSET (word, (struct fd_set *)vec_wo)) events |= EV_WRITE;
+ }
+ }
- if (events)
- fd_event (EV_A_ word, events);
- }
-# endif
-#else
- for (word = vec_max; word--; )
- {
- if (((uint32_t *)vec_ro) [word] | ((uint32_t *)vec_wo) [word])
- for (offs = 4; offs--; )
- {
- int idx = word * 4 + offs;
- unsigned char byte_r = vec_ro [idx];
- unsigned char byte_w = vec_wo [idx];
- int bit;
-
- if (byte_r | byte_w)
- for (bit = 8; bit--; )
- {
- int events = 0;
- events |= byte_r & (1 << bit) ? EV_READ : 0;
- events |= byte_w & (1 << bit) ? EV_WRITE : 0;
-
- if (events)
- fd_event (EV_A_ idx * 8 + bit, events);
- }
- }
- }
#endif
}
-static int
+int inline_size
select_init (EV_P_ int flags)
{
- method_fudge = 1e-2; /* needed to compensate for select returning early, very conservative */
- method_modify = select_modify;
- method_poll = select_poll;
+ backend_fudge = 0.; /* posix says this is zero */
+ backend_modify = select_modify;
+ backend_poll = select_poll;
#if EV_SELECT_USE_FD_SET
vec_max = FD_SETSIZE / 32;
- vec_ri = ev_malloc (sizeof (struct fd_set)); FD_ZERO ((struct fd_set *)vec_ri);
- vec_ro = ev_malloc (sizeof (struct fd_set));
- vec_wi = ev_malloc (sizeof (struct fd_set)); FD_ZERO ((struct fd_set *)vec_wi);
- vec_wo = ev_malloc (sizeof (struct fd_set));
+ vec_ri = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_ri);
+ vec_ro = ev_malloc (sizeof (fd_set));
+ vec_wi = ev_malloc (sizeof (fd_set)); FD_ZERO ((fd_set *)vec_wi);
+ vec_wo = ev_malloc (sizeof (fd_set));
#else
vec_max = 0;
vec_ri = 0;
vec_wo = 0;
#endif
- return EVMETHOD_SELECT;
+ return EVBACKEND_SELECT;
}
-static void
+void inline_size
select_destroy (EV_P)
{
ev_free (vec_ri);
projects / software / libev.git / blobdiff