about summary refs log tree commit diff
path: root/bits/poll.h
diff options
context:
space:
mode:
Diffstat (limited to 'bits/poll.h')
-rw-r--r--bits/poll.h38
1 files changed, 38 insertions, 0 deletions
diff --git a/bits/poll.h b/bits/poll.h
new file mode 100644
index 0000000000..55ec70e363
--- /dev/null
+++ b/bits/poll.h
@@ -0,0 +1,38 @@
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+
+/* Event types that can be polled for.  These bits may be set in `events'
+   to indicate the interesting event types; they will appear in `revents'
+   to indicate the status of the file descriptor.  */
+#define POLLIN		01              /* There is data to read.  */
+#define POLLPRI		02              /* There is urgent data to read.  */
+#define POLLOUT		04              /* Writing now will not block.  */
+
+/* Some aliases.  */
+#define POLLWRNORM	POLLOUT
+
+/* Event types always implicitly polled for.  These bits need not be set in
+   `events', but they will appear in `revents' to indicate the status of
+   the file descriptor.  */
+#define POLLERR         010             /* Error condition.  */
+#define POLLHUP         020             /* Hung up.  */
+#define POLLNVAL        040             /* Invalid polling request.  */
+
+/* Canonical number of polling requests to read in at a time in poll.  */
+#define NPOLLFILE	30