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authorMike Frysinger <vapier@gentoo.org>2006-02-22 06:24:39 +0000
committerMike Frysinger <vapier@gentoo.org>2006-02-22 06:24:39 +0000
commitc10a52509ff60f07e366e70748f380f8e0a34504 (patch)
tree521523ccdc067419d113f33c0f5bf502ebef9b8f /libc/sysdeps
parent4afc4d00261ccba61a8fcd2cb0aba246f0029850 (diff)
epoll is linux specific
Diffstat (limited to 'libc/sysdeps')
-rw-r--r--libc/sysdeps/linux/common/sys/epoll.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/sys/epoll.h b/libc/sysdeps/linux/common/sys/epoll.h
new file mode 100644
index 000000000..68f173a04
--- /dev/null
+++ b/libc/sysdeps/linux/common/sys/epoll.h
@@ -0,0 +1,110 @@
+/* Copyright (C) 2002, 2003, 2004, 2005 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 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.
+
+ 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SYS_EPOLL_H
+#define _SYS_EPOLL_H 1
+
+#include <stdint.h>
+#include <sys/types.h>
+
+
+enum EPOLL_EVENTS
+ {
+ EPOLLIN = 0x001,
+#define EPOLLIN EPOLLIN
+ EPOLLPRI = 0x002,
+#define EPOLLPRI EPOLLPRI
+ EPOLLOUT = 0x004,
+#define EPOLLOUT EPOLLOUT
+ EPOLLRDNORM = 0x040,
+#define EPOLLRDNORM EPOLLRDNORM
+ EPOLLRDBAND = 0x080,
+#define EPOLLRDBAND EPOLLRDBAND
+ EPOLLWRNORM = 0x100,
+#define EPOLLWRNORM EPOLLWRNORM
+ EPOLLWRBAND = 0x200,
+#define EPOLLWRBAND EPOLLWRBAND
+ EPOLLMSG = 0x400,
+#define EPOLLMSG EPOLLMSG
+ EPOLLERR = 0x008,
+#define EPOLLERR EPOLLERR
+ EPOLLHUP = 0x010,
+#define EPOLLHUP EPOLLHUP
+ EPOLLONESHOT = (1 << 30),
+#define EPOLLONESHOT EPOLLONESHOT
+ EPOLLET = (1 << 31)
+#define EPOLLET EPOLLET
+ };
+
+
+/* Valid opcodes ( "op" parameter ) to issue to epoll_ctl(). */
+#define EPOLL_CTL_ADD 1 /* Add a file decriptor to the interface. */
+#define EPOLL_CTL_DEL 2 /* Remove a file decriptor from the interface. */
+#define EPOLL_CTL_MOD 3 /* Change file decriptor epoll_event structure. */
+
+
+typedef union epoll_data
+{
+ void *ptr;
+ int fd;
+ uint32_t u32;
+ uint64_t u64;
+} epoll_data_t;
+
+struct epoll_event
+{
+ uint32_t events; /* Epoll events */
+ epoll_data_t data; /* User data variable */
+};
+
+
+__BEGIN_DECLS
+
+/* Creates an epoll instance. Returns an fd for the new instance.
+ The "size" parameter is a hint specifying the number of file
+ descriptors to be associated with the new instance. The fd
+ returned by epoll_create() should be closed with close(). */
+extern int epoll_create (int __size) __THROW;
+
+
+/* Manipulate an epoll instance "epfd". Returns 0 in case of success,
+ -1 in case of error ( the "errno" variable will contain the
+ specific error code ) The "op" parameter is one of the EPOLL_CTL_*
+ constants defined above. The "fd" parameter is the target of the
+ operation. The "event" parameter describes which events the caller
+ is interested in and any associated user data. */
+extern int epoll_ctl (int __epfd, int __op, int __fd,
+ struct epoll_event *__event) __THROW;
+
+
+/* Wait for events on an epoll instance "epfd". Returns the number of
+ triggered events returned in "events" buffer. Or -1 in case of
+ error with the "errno" variable set to the specific error code. The
+ "events" parameter is a buffer that will contain triggered
+ events. The "maxevents" is the maximum number of events to be
+ returned ( usually size of "events" ). The "timeout" parameter
+ specifies the maximum wait time in milliseconds (-1 == infinite).
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int epoll_wait (int __epfd, struct epoll_event *__events,
+ int __maxevents, int __timeout);
+
+__END_DECLS
+
+#endif /* sys/epoll.h */