semaphore.h

该项目主要是将wingdows程序直接运行在linux上

/*
 * semaphore.h
 *
 * Copyright (C) 2006  Insigme Co., Ltd
 *
 * Authors: 
 * - Liwei Zhou
 *
 * This software has been developed while working on the Linux Unified Kernel
 * project (http://linux.insigma.com.cn) in the Insigma Reaserch Institute,  
 * which is a subdivision of Insigma Co., Ltd (http://www.insigma.com.cn).
 * 
 * The project is sponsored by Insigma Co., Ltd.
 *
 * The authors can be reached at [e-mail].
 *
 * 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.
 *
 * Revision History:
 *   Jan 2006 - Created.
 */
 
/* 
 * semaphore.h: win32 semaphore definition
 * Reference to Kernel-win32 code
 */

#ifndef _SEMAPHORE_H
#define _SEMAPHORE_H

#include <linux/module.h>
#include "object.h"

#ifdef CONFIG_UNIFIED_KERNEL

/*
 * semaphore object definition
 * - do not modify wm_count unless holding wm_lock
 */
struct win32_semaphore {
	spinlock_t	ws_lock;	/* count modification lock */
	long		ws_count;	/* semaphore count */
	long		ws_max;		/* maximum count */
};

struct sema_args {
	PHANDLE			SemaphoreHandle;
	ACCESS_MASK		DesiredAccess;
	POBJECT_ATTRIBUTES	ObjectAttributes;
	LONG			InitialCount;
	LONG			MaximumCount;
};

extern void SemaphoreClassInit(void);

NTSTATUS STDCALL
NtCreateSemaphore(OUT PHANDLE 			SemaphoreHandle,
                  IN  ACCESS_MASK 		DesiredAccess,
                  IN  POBJECT_ATTRIBUTES 	ObjectAttributes  OPTIONAL,
                  IN  LONG 			InitialCount,
                  IN  LONG			MaximumCount);

NTSTATUS STDCALL
NtOpenSemaphore(OUT PHANDLE 		SemaphoreHandle,
                IN  ACCESS_MASK 	DesiredAccess,
                IN  POBJECT_ATTRIBUTES  ObjectAttributes);

NTSTATUS STDCALL
NtReleaseSemaphore(IN  HANDLE SemaphoreHandle,
                   IN  LONG   ReleaseCount,
                   OUT PLONG  PreviousCount  OPTIONAL);

#endif /* CONFIG_UNIFIED_KERNEL */
#endif /* _SEMAPHORE_H */