[project @ 1999-11-09 10:46:25 by simonmar]

[ghc-hetmet.git] / ghc / rts / RtsUtils.c

diff --git a/ghc/rts/RtsUtils.c b/ghc/rts/RtsUtils.c
index d3d01cf..7b2ef75 100644 (file)
--- a/ghc/rts/RtsUtils.c
+++ b/ghc/rts/RtsUtils.c
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: RtsUtils.c,v 1.9 1999/08/25 16:11:51 simonmar Exp $
+ * $Id: RtsUtils.c,v 1.10 1999/11/09 10:46:26 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -19,6 +19,10 @@
 #include <time.h>
 #endif
 
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
 #include <stdarg.h>
 
 /* variable-argument error function. */
@@ -184,6 +188,26 @@ time_str(void)
 #endif
 
 /* -----------------------------------------------------------------------------
+ * Reset a file handle to blocking mode.  We do this for the standard
+ * file descriptors before exiting, because the shell doesn't always
+ * clean up for us.
+ * -------------------------------------------------------------------------- */
+
+void
+resetNonBlockingFd(int fd)
+{
+  long fd_flags;
+
+#if !defined(_WIN32) || defined(__CYGWIN__) || defined(__CYGWIN32__)
+  /* clear the non-blocking flag on this file descriptor */
+  fd_flags = fcntl(fd, F_GETFL);
+  if (fd_flags & O_NONBLOCK) {
+    fcntl(fd, F_SETFL, fd_flags & ~O_NONBLOCK);
+  }
+#endif
+}
+
+/* -----------------------------------------------------------------------------
    Print large numbers, with punctuation.
    -------------------------------------------------------------------------- */