/*
- * (c) The GRASP/AQUA Project, Glasgow University, 1994-1998
+ * (c) The GRASP/AQUA Project, Glasgow University, 1994-2002
*
- * $Id: inputReady.c,v 1.1 2001/06/28 14:15:04 simonmar Exp $
- *
- * hReady Runtime Support
+ * hWaitForInput Runtime Support
*/
-/* select and supporting types is not */
-#ifndef _AIX
-#define NON_POSIX_SOURCE
-#endif
-
-#include "HsCore.h"
+/* select and supporting types is not Posix */
+/* #include "PosixSource.h" */
+#include "HsBase.h"
/*
* inputReady(fd) checks to see whether input is available on the file
* *character* from this file object without blocking?'
*/
int
-inputReady(int fd, int msecs)
+inputReady(int fd, int msecs, int isSock)
{
- int maxfd, ready;
+ if
#ifndef mingw32_TARGET_OS
- fd_set rfd;
- struct timeval tv;
+ ( 1 ) {
+#else
+ ( isSock ) {
#endif
-
+ int maxfd, ready;
+ fd_set rfd;
+ struct timeval tv;
+
+ FD_ZERO(&rfd);
+ FD_SET(fd, &rfd);
+
+ /* select() will consider the descriptor set in the range of 0 to
+ * (maxfd-1)
+ */
+ maxfd = fd + 1;
+ tv.tv_sec = msecs / 1000;
+ tv.tv_usec = msecs % 1000;
+
+ while ((ready = select(maxfd, &rfd, NULL, NULL, &tv)) < 0 ) {
+ if (errno != EINTR ) {
+ return -1;
+ }
+ }
+
+ /* 1 => Input ready, 0 => not ready, -1 => error */
+ return (ready);
+ }
#ifdef mingw32_TARGET_OS
- return 1;
-#else
- FD_ZERO(&rfd);
- FD_SET(fd, &rfd);
-
- /* select() will consider the descriptor set in the range of 0 to
- * (maxfd-1)
- */
- maxfd = fd + 1;
- tv.tv_sec = msecs / 1000;
- tv.tv_usec = msecs % 1000;
-
- while ((ready = select(maxfd, &rfd, NULL, NULL, &tv)) < 0 ) {
- if (errno != EINTR ) {
- return -1;
- }
- }
-
- /* 1 => Input ready, 0 => not ready, -1 => error */
- return (ready);
-
+ else {
+ DWORD rc;
+ HANDLE hFile = (HANDLE)_get_osfhandle(fd);
+
+ rc = WaitForMultipleObjects( 1,
+ &hFile,
+ TRUE, /* wait all */
+ msecs); /*millisecs*/
+
+ /* 1 => Input ready, 0 => not ready, -1 => error */
+ switch (rc) {
+ case WAIT_TIMEOUT: return 0;
+ case WAIT_OBJECT_0: return 1;
+ default: return -1;
+ }
+ }
#endif
-}
+}