Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtscreen/usleep.c

@@ -0,0 +1,49 @@
+/* $TOG: usleep.c /main/6 1998/04/06 13:32:38 mgreess $ */
+/*
+ */
+/*                                                                      *
+ * (c) Copyright 1993, 1994 Hewlett-Packard Company                     *
+ * (c) Copyright 1993, 1994 International Business Machines Corp.       *
+ * (c) Copyright 1993, 1994 Sun Microsystems, Inc.                      *
+ * (c) Copyright 1993, 1994 Novell, Inc.                                *
+ */
+/*-
+ * usleep.c - OS dependant implementation of usleep().
+ *
+ * Copyright (c) 1991 by Patrick J. Naughton.
+ *
+ * Revision History:
+ * 30-Aug-90: written.
+ *
+ */
+
+#include "dtscreen.h"
+
+#if !defined(_AIX) && !defined(hpV4) && !defined(linux)
+int
+usleep(unsigned long usec)
+{
+#ifdef SYSV
+    poll((struct poll *) 0, (size_t) 0, usec / 1000);	/* ms resolution */
+#else
+    struct timeval timeout;
+    timeout.tv_usec = usec % (unsigned long) 1000000;
+    timeout.tv_sec = usec / (unsigned long) 1000000;
+    select(0, (void *) 0, (void *) 0, (void *) 0, &timeout);
+#endif
+    return 0;
+}
+#endif /* !_AIX && !hpV4*/
+
+/*
+ * returns the number of seconds since 01-Jan-70.
+ * This is used to control rate and timeout in many of the animations.
+ */
+long
+seconds()
+{
+    struct timeval now;
+
+    gettimeofday(&now, (struct timezone *) 0);
+    return now.tv_sec;
+}