Import guile-1.8 as multiple upstream tarball component

[lilypond.git] / guile18 / libguile / iselect.h

diff --git a/guile18/libguile/iselect.h b/guile18/libguile/iselect.h
new file mode 100644 (file)
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+++ b/guile18/libguile/iselect.h
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+/* classes: h_files */
+
+#ifndef SCM_ISELECT_H
+#define SCM_ISELECT_H
+
+/* Copyright (C) 1997,1998,2000,2001, 2002, 2006 Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+\f
+
+#include "libguile/__scm.h"
+
+/* Needed for FD_SET on some systems.  */
+#include <sys/types.h>
+
+#if SCM_HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+
+#if SCM_HAVE_WINSOCK2_H
+# include <winsock2.h>
+#endif
+
+#ifdef FD_SET
+
+#define SELECT_TYPE fd_set
+#if defined(__INTERIX) && FD_SETSIZE == 4096
+/* Interix defines FD_SETSIZE 4096 but select rejects that. */
+#define SELECT_SET_SIZE 1024
+#else
+#define SELECT_SET_SIZE FD_SETSIZE
+#endif
+
+#else /* no FD_SET */
+
+/* Define the macros to access a single-int bitmap of descriptors.  */
+#define SELECT_SET_SIZE 32
+#define SELECT_TYPE int
+#define FD_SET(n, p) (*(p) |= (1 << (n)))
+#define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
+#define FD_ISSET(n, p) (*(p) & (1 << (n)))
+#define FD_ZERO(p) (*(p) = 0)
+
+#endif /* no FD_SET */
+
+SCM_API int scm_std_select (int fds,
+                           SELECT_TYPE *rfds,
+                           SELECT_TYPE *wfds,
+                           SELECT_TYPE *efds,
+                           struct timeval *timeout);
+
+#endif  /* SCM_ISELECT_H */
+
+/*
+  Local Variables:
+  c-file-style: "gnu"
+  End:
+*/