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[/] [hf-risc/] [trunk/] [tools/] [riscv-gnu-toolchain-master/] [linux-headers/] [include/] [linux/] [eventpoll.h] - Blame information for rev 13

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/*
 *  include/linux/eventpoll.h ( Efficient event polling implementation )
 *  Copyright (C) 2001,...,2006  Davide Libenzi
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Davide Libenzi <davidel@xmailserver.org>
 *
 */
 
#ifndef _LINUX_EVENTPOLL_H
#define _LINUX_EVENTPOLL_H
 
/* For O_CLOEXEC */
#include <linux/fcntl.h>
#include <linux/types.h>
 
/* Flags for epoll_create1.  */
#define EPOLL_CLOEXEC O_CLOEXEC
 
/* Valid opcodes to issue to sys_epoll_ctl() */
#define EPOLL_CTL_ADD 1
#define EPOLL_CTL_DEL 2
#define EPOLL_CTL_MOD 3
 
/*
 * Request the handling of system wakeup events so as to prevent system suspends
 * from happening while those events are being processed.
 *
 * Assuming neither EPOLLET nor EPOLLONESHOT is set, system suspends will not be
 * re-allowed until epoll_wait is called again after consuming the wakeup
 * event(s).
 *
 * Requires CAP_BLOCK_SUSPEND
 */
#define EPOLLWAKEUP (1 << 29)
 
/* Set the One Shot behaviour for the target file descriptor */
#define EPOLLONESHOT (1 << 30)
 
/* Set the Edge Triggered behaviour for the target file descriptor */
#define EPOLLET (1 << 31)
 
/*
 * On x86-64 make the 64bit structure have the same alignment as the
 * 32bit structure. This makes 32bit emulation easier.
 *
 * UML/x86_64 needs the same packing as x86_64
 */
#ifdef __x86_64__
#define EPOLL_PACKED __attribute__((packed))
#else
#define EPOLL_PACKED
#endif
 
struct epoll_event {
        __u32 events;
        __u64 data;
} EPOLL_PACKED;
 
#ifdef CONFIG_PM_SLEEP
static __inline__ void ep_take_care_of_epollwakeup(struct epoll_event *epev)
{
        if ((epev->events & EPOLLWAKEUP) && !capable(CAP_BLOCK_SUSPEND))
                epev->events &= ~EPOLLWAKEUP;
}
#else
static __inline__ void ep_take_care_of_epollwakeup(struct epoll_event *epev)
{
        epev->events &= ~EPOLLWAKEUP;
}
#endif
#endif /* _LINUX_EVENTPOLL_H */

Line No.	Rev	Author	Line
1	13	serginhofr	`/*`
2			`* include/linux/eventpoll.h ( Efficient event polling implementation )`
3			`* Copyright (C) 2001,...,2006 Davide Libenzi`
4			`*`
5			`* This program is free software; you can redistribute it and/or modify`
6			`* it under the terms of the GNU General Public License as published by`
7			`* the Free Software Foundation; either version 2 of the License, or`
8			`* (at your option) any later version.`
9			`*`
10			`* Davide Libenzi <davidel@xmailserver.org>`
11			`*`
12			`*/`
13
14			`#ifndef _LINUX_EVENTPOLL_H`
15			`#define _LINUX_EVENTPOLL_H`
16
17			`/* For O_CLOEXEC */`
18			`#include <linux/fcntl.h>`
19			`#include <linux/types.h>`
20
21			`/* Flags for epoll_create1. */`
22			`#define EPOLL_CLOEXEC O_CLOEXEC`
23
24			`/* Valid opcodes to issue to sys_epoll_ctl() */`
25			`#define EPOLL_CTL_ADD 1`
26			`#define EPOLL_CTL_DEL 2`
27			`#define EPOLL_CTL_MOD 3`
28
29			`/*`
30			`* Request the handling of system wakeup events so as to prevent system suspends`
31			`* from happening while those events are being processed.`
32			`*`
33			`* Assuming neither EPOLLET nor EPOLLONESHOT is set, system suspends will not be`
34			`* re-allowed until epoll_wait is called again after consuming the wakeup`
35			`* event(s).`
36			`*`
37			`* Requires CAP_BLOCK_SUSPEND`
38			`*/`
39			`#define EPOLLWAKEUP (1 << 29)`
40
41			`/* Set the One Shot behaviour for the target file descriptor */`
42			`#define EPOLLONESHOT (1 << 30)`
43
44			`/* Set the Edge Triggered behaviour for the target file descriptor */`
45			`#define EPOLLET (1 << 31)`
46
47			`/*`
48			`* On x86-64 make the 64bit structure have the same alignment as the`
49			`* 32bit structure. This makes 32bit emulation easier.`
50			`*`
51			`* UML/x86_64 needs the same packing as x86_64`
52			`*/`
53			`#ifdef __x86_64__`
54			`#define EPOLL_PACKED __attribute__((packed))`
55			`#else`
56			`#define EPOLL_PACKED`
57			`#endif`
58
59			`struct epoll_event {`
60			`__u32 events;`
61			`__u64 data;`
62			`} EPOLL_PACKED;`
63
64			`#ifdef CONFIG_PM_SLEEP`
65			`static __inline__ void ep_take_care_of_epollwakeup(struct epoll_event *epev)`
66			`{`
67			`if ((epev->events & EPOLLWAKEUP) && !capable(CAP_BLOCK_SUSPEND))`
68			`epev->events &= ~EPOLLWAKEUP;`
69			`}`
70			`#else`
71			`static __inline__ void ep_take_care_of_epollwakeup(struct epoll_event *epev)`
72			`{`
73			`epev->events &= ~EPOLLWAKEUP;`
74			`}`
75			`#endif`
76			`#endif /* _LINUX_EVENTPOLL_H */`

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[/] [hf-risc/] [trunk/] [tools/] [riscv-gnu-toolchain-master/] [linux-headers/] [include/] [linux/] [eventpoll.h] - Blame information for rev 13