import winsup-2000-02-17 snapshot

1 files changed, 56 insertions, 0 deletions

diff --git a/winsup/cygwin/select.h b/winsup/cygwin/select.h
new file mode 100644
index 0000000..286951e
--- /dev/null
+++ b/winsup/cygwin/select.h
@@ -0,0 +1,56 @@
+/* select.h
+
+   Copyright 1998 Cygnus Solutions.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+/* Winsock select() types and macros */
+
+/*
+ * Use this struct to interface to
+ * the system provided select.
+ */
+typedef struct winsock_fd_set
+{
+  unsigned int fd_count;
+  HANDLE fd_array[1024]; /* Dynamically allocated. */
+} winsock_fd_set;
+
+/*
+ * Define the Win32 winsock definitions to have a prefix WINSOCK_
+ * so we can be explicit when we are using them.
+ */
+#define WINSOCK_FD_ISSET(fd, set) __WSAFDIsSet ((SOCKET)fd, (fd_set *)set)
+#define WINSOCK_FD_SET(fd, set) do { \
+	       (set)->fd_array[(set)->fd_count++]=fd;\
+} while(0)
+#define WINSOCK_FD_ZERO(set) ((set)->fd_count = 0)
+#define WINSOCK_FD_CLR(fd, set) do { \
+    u_int __i; \
+    for (__i = 0; __i < (set)->fd_count ; __i++) { \
+	if ((set)->fd_array[__i] == fd) { \
+	    while (__i < (set)->fd_count-1) { \
+		(set)->fd_array[__i] = \
+		    (set)->fd_array[__i+1]; \
+		__i++; \
+	    } \
+	    (set)->fd_count--; \
+	    break; \
+	} \
+    } \
+} while(0)
+
+extern "C" int PASCAL __WSAFDIsSet(SOCKET, fd_set*);
+extern "C" int PASCAL win32_select(int, fd_set*, fd_set*, fd_set*, const struct timeval*);
+
+/*
+ * call to winsock's select() -
+ * type coercion need to appease confused prototypes
+ */
+#define WINSOCK_SELECT(nfd, rd, wr, ex, timeo) \
+    win32_select (nfd, (fd_set *)rd, (fd_set *)wr, (fd_set *)ex, timeo)
+