mirror of
https://github.com/darlinghq/darling.git
synced 2026-05-02 16:59:20 -05:00
Lubos Dolezel
111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/*
|
|
* Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
|
|
*
|
|
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
|
|
*
|
|
* This file contains Original Code and/or Modifications of Original Code
|
|
* as defined in and that are subject to the Apple Public Source License
|
|
* Version 2.0 (the 'License'). You may not use this file except in
|
|
* compliance with the License. The rights granted to you under the License
|
|
* may not be used to create, or enable the creation or redistribution of,
|
|
* unlawful or unlicensed copies of an Apple operating system, or to
|
|
* circumvent, violate, or enable the circumvention or violation of, any
|
|
* terms of an Apple operating system software license agreement.
|
|
*
|
|
* Please obtain a copy of the License at
|
|
* http://www.opensource.apple.com/apsl/ and read it before using this file.
|
|
*
|
|
* The Original Code and all software distributed under the License are
|
|
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
|
|
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
|
|
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
|
|
* Please see the License for the specific language governing rights and
|
|
* limitations under the License.
|
|
*
|
|
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
|
|
*/
|
|
/*
|
|
* File: sys/aio_kern.h
|
|
* Author: Jerry Cottingham [jerryc@apple.com]
|
|
*
|
|
* Header file for kernel only portion of POSIX Asynchronous IO APIs
|
|
*
|
|
*/
|
|
|
|
#include <sys/aio.h>
|
|
|
|
#ifndef _SYS_AIO_KERN_H_
|
|
#define _SYS_AIO_KERN_H_
|
|
|
|
#ifdef KERNEL
|
|
|
|
struct aio_workq_entry
|
|
{
|
|
TAILQ_ENTRY( aio_workq_entry ) aio_workq_link; /* Protected by queue lock */
|
|
TAILQ_ENTRY( aio_workq_entry ) aio_proc_link; /* Proteced by proc's aio lock */
|
|
|
|
/* Proc lock */
|
|
void *group_tag; /* identifier used to group IO requests */
|
|
|
|
/* Initialized and never changed, safe to access */
|
|
struct proc *procp; /* user proc that queued this request */
|
|
user_addr_t uaiocbp; /* pointer passed in from user land */
|
|
struct user_aiocb aiocb; /* copy of aiocb from user land */
|
|
vm_map_t aio_map; /* user land map we have a reference to */
|
|
|
|
/* Entry lock */
|
|
int aio_refcount;
|
|
user_ssize_t returnval; /* return value from read / write request */
|
|
int errorval; /* error value from read / write request */
|
|
int flags;
|
|
};
|
|
typedef struct aio_workq_entry aio_workq_entry;
|
|
|
|
/*
|
|
* definitions for aio_workq_entry.flags
|
|
*/
|
|
#define AIO_READ 0x00000001 /* a read */
|
|
#define AIO_WRITE 0x00000002 /* a write */
|
|
#define AIO_FSYNC 0x00000004 /* aio_fsync with op = O_SYNC */
|
|
#define AIO_DSYNC 0x00000008 /* aio_fsync with op = O_DSYNC (not supported yet) */
|
|
#define AIO_LIO 0x00000010 /* lio_listio generated IO */
|
|
#define AIO_DO_FREE 0x00000800 /* entry should be freed when last reference is dropped. */
|
|
/* set by aio_return() and _aio_exit() */
|
|
#define AIO_DISABLE 0x00002000 /* process is trying to exit or exec and we need */
|
|
/* to not try to send a signal from do_aio_completion() */
|
|
#define AIO_CLOSE_WAIT 0x00004000 /* process is trying to close and is */
|
|
/* waiting for one or more active IO requests to */
|
|
/* complete */
|
|
#define AIO_EXIT_WAIT 0x00008000 /* process is trying to exit or exec and is */
|
|
/* waiting for one or more active IO requests to */
|
|
/* complete */
|
|
|
|
#define AIO_LIO_NOTIFY 0x00010000 /* wait for list complete */
|
|
|
|
/*
|
|
* Prototypes
|
|
*/
|
|
|
|
__private_extern__ void
|
|
_aio_close(struct proc *p, int fd);
|
|
|
|
__private_extern__ void
|
|
_aio_exit(struct proc *p);
|
|
|
|
__private_extern__ void
|
|
_aio_exec(struct proc *p);
|
|
|
|
__private_extern__ void
|
|
_aio_create_worker_threads(int num);
|
|
|
|
__private_extern__ void
|
|
aio_init(void) __attribute__((section("__TEXT, initcode")));
|
|
|
|
task_t
|
|
get_aiotask(void);
|
|
|
|
#endif /* KERNEL */
|
|
|
|
#endif /* _SYS_AIO_KERN_H_ */
|