SubmittingPatches: document how to reference previous commits

diff --git a/compat/poll/poll.c b/compat/poll/poll.c
index 7d226ecb293ee3c5f9b17aa3e5e36b7c8701dbae..b10adc780fc334383f2684d21fa1c5a8d92771b9 100644 (file)
--- a/compat/poll/poll.c
+++ b/compat/poll/poll.c
@@ -39,7 +39,7 @@
 
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
 # define WIN32_NATIVE
-# if defined (_MSC_VER)
+# if defined (_MSC_VER) && !defined(_WIN32_WINNT)
 #  define _WIN32_WINNT 0x0502
 # endif
 # include <winsock2.h>
@@ -76,7 +76,7 @@
 
 #ifdef WIN32_NATIVE
 
-#define IsConsoleHandle(h) (((long) (h) & 3) == 3)
+#define IsConsoleHandle(h) (((long) (intptr_t) (h) & 3) == 3)
 
 static BOOL
 IsSocketHandle (HANDLE h)
@@ -446,7 +446,7 @@ poll (struct pollfd *pfd, nfds_t nfd, int timeout)
   static HANDLE hEvent;
   WSANETWORKEVENTS ev;
   HANDLE h, handle_array[FD_SETSIZE + 2];
-  DWORD ret, wait_timeout, nhandles;
+  DWORD ret, wait_timeout, nhandles, start = 0, elapsed, orig_timeout = 0;
   fd_set rfds, wfds, xfds;
   BOOL poll_again;
   MSG msg;
@@ -459,6 +459,12 @@ poll (struct pollfd *pfd, nfds_t nfd, int timeout)
       return -1;
     }
 
+  if (timeout != INFTIM)
+    {
+      orig_timeout = timeout;
+      start = GetTickCount();
+    }
+
   if (!hEvent)
     hEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
 
@@ -576,7 +582,7 @@ poll (struct pollfd *pfd, nfds_t nfd, int timeout)
        {
          /* It's a socket.  */
          WSAEnumNetworkEvents ((SOCKET) h, NULL, &ev);
-         WSAEventSelect ((SOCKET) h, 0, 0);
+         WSAEventSelect ((SOCKET) h, NULL, 0);
 
          /* If we're lucky, WSAEnumNetworkEvents already provided a way
             to distinguish FD_READ and FD_ACCEPT; this saves a recv later.  */
@@ -603,9 +609,15 @@ poll (struct pollfd *pfd, nfds_t nfd, int timeout)
        rc++;
     }
 
-  if (!rc && timeout == INFTIM)
+  if (!rc && orig_timeout && timeout != INFTIM)
+    {
+      elapsed = GetTickCount() - start;
+      timeout = elapsed >= orig_timeout ? 0 : orig_timeout - elapsed;
+    }
+
+  if (!rc && timeout)
     {
-      SwitchToThread();
+      SleepEx (1, TRUE);
       goto restart;
     }