X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/4ee0973144c5b6c7cf136b1256e7ce9cb802e682..4b05fe94e44407cd62092863e204337c521e7d8a:/ev_select.c

diff --git a/ev_select.c b/ev_select.c
index 60cc084..d9fdf92 100644
--- a/ev_select.c
+++ b/ev_select.c
@@ -32,6 +32,7 @@
 /* for unix systems */
 #ifdef WIN32
 typedef unsigned int uint32_t;
+# define EV_SELECT_USE_FD_SET 1
 #else
 # include <sys/select.h>
 # include <inttypes.h>
@@ -42,33 +43,47 @@ typedef unsigned int uint32_t;
 static void
 select_modify (EV_P_ int fd, int oev, int nev)
 {
-  int offs = fd >> 3;
-  int mask = 1 << (fd & 7);
-
   if (oev == nev)
     return;
 
-  if (vec_max < (fd >> 5) + 1)
-    {
-      int new_max = (fd >> 5) + 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 */
-
-      for (; vec_max < new_max; ++vec_max)
-        ((uint32_t *)vec_ri)[vec_max] =
-        ((uint32_t *)vec_wi)[vec_max] = 0;
-    }
-
-  vec_ri [offs] |= mask;
-  if (!(nev & EV_READ))
-    vec_ri [offs] &= ~mask;
+#if EV_SELECT_USE_FD_SET
+  if (nev & EV_READ)
+    FD_SET (fd, (struct fd_set *)vec_ri);
+  else
+    FD_CLR (fd, (struct fd_set *)vec_ri);
 
-  vec_wi [offs] |= mask;
-  if (!(nev & EV_WRITE))
-    vec_wi [offs] &= ~mask;
+  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 new_max = (fd >> 5) + 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 */
+
+        for (; vec_max < new_max; ++vec_max)
+          ((uint32_t *)vec_ri)[vec_max] =
+          ((uint32_t *)vec_wi)[vec_max] = 0;
+      }
+
+    vec_ri [offs] |= mask;
+    if (!(nev & EV_READ))
+      vec_ri [offs] &= ~mask;
+
+    vec_wi [offs] |= mask;
+    if (!(nev & EV_WRITE))
+      vec_wi [offs] &= ~mask;
+  }
+#endif
 }
 
 static void
@@ -78,8 +93,13 @@ select_poll (EV_P_ ev_tstamp timeout)
   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));
+#else
   memcpy (vec_ro, vec_ri, vec_max * 4);
   memcpy (vec_wo, vec_wi, vec_max * 4);
+#endif
 
   tv.tv_sec  = (long)timeout;
   tv.tv_usec = (long)((timeout - (ev_tstamp)tv.tv_sec) * 1e6);
@@ -88,6 +108,11 @@ select_poll (EV_P_ ev_tstamp timeout)
 
   if (res < 0)
     {
+#ifdef WIN32
+      if (errno == WSAEINTR   ) errno = EINTR;
+      if (errno == WSAENOTSOCK) errno = EBADF;
+#endif
+
       if (errno == EBADF)
         fd_ebadf (EV_A);
       else if (errno == ENOMEM && !syserr_cb)
@@ -98,6 +123,17 @@ select_poll (EV_P_ ev_tstamp timeout)
       return;
     }
 
+#if EV_SELECT_USE_FD_SET
+  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);
+    }
+#else
   for (word = vec_max; word--; )
     {
       if (((uint32_t *)vec_ro) [word] | ((uint32_t *)vec_wo) [word])
@@ -120,6 +156,7 @@ select_poll (EV_P_ ev_tstamp timeout)
                 }
           }
     }
+#endif
 }
 
 static int
@@ -129,11 +166,19 @@ select_init (EV_P_ int flags)
   method_modify = select_modify;
   method_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));
+#else
   vec_max = 0;
   vec_ri  = 0; 
   vec_ri  = 0;   
   vec_wo  = 0; 
   vec_wo  = 0; 
+#endif
 
   return EVMETHOD_SELECT;
 }