program10.c

嵌入式系统基础课件

#include "priority.h"
#include <stdlib.h>

#define	LO_CRITICAL_SECS	2
#define	HI_CRITICAL_SECS	2

#define	STACK_SIZE	1000
#define	TOP_OF(stk)	&stk[STACK_SIZE]

typedef struct THREAD
	{
	void	(*function)() ;
	int	priority ;
	char	graphic ;
	char	*title ;
	WINDOW	*window ;
	OS_STK	stack[STACK_SIZE] ;
	} THREAD ;

typedef enum
	{
	SEMA_PENDING	= 0,
	SEMA_ACQUIRED	= 1,
	SEMA_RELEASED	= 2
	} SEMAPHORE ;

#define	DORMANT		'