*** sys/time.h.orig	Tue Jun 20 10:49:20 1995
--- sys/time.h	Tue Jul 18 02:04:55 1995
***************
*** 40,45 ****
--- 40,49 ----
  
  #include <sys/types.h>
  
+ #ifdef MRIT_USE_SETCALLOUT
+ #include <sys/callout.h>
+ #endif /* MRIT_USE_SETCALLOUT
+ 
  /*
   * Structure returned by gettimeofday(2) system call,
   * and used in other calls.
***************
*** 111,116 ****
--- 115,121 ----
  #define	ITIMER_REAL	0
  #define	ITIMER_VIRTUAL	1
  #define	ITIMER_PROF	2
+ #define ITIMER_MULTIREAL 3  /* For use with MRITIMER */
  
  struct	itimerval {
  	struct	timeval it_interval;	/* timer interval */
***************
*** 117,122 ****
--- 122,149 ----
  	struct	timeval it_value;	/* current value */
  };
  
+ #ifdef MRITIMER
+ #ifdef _KERNEL
+ struct	mrtimer {
+ 	long usecount;			/* Incremented whenever we're freed. */
+ 	struct itimerval expiretime;	/* Absolute expire time.	     */
+ 	struct proc *p;			/* Process that owns this mrtimer,   */
+ 					/* or NULL if none (in free list).   */
+ 	struct timeval label;		/* User label for this mrtimer.	     */
+ 	struct mrtimer *next;		/* Next mrtimer in list.	     */
+ 	struct mrtimer *prev;		/* Previous mrtimer in list (not     */
+ 					/* used in the free list)	     */
+ #ifdef MRIT_USE_SETCALLOUT
+ 	struct callout_handle callout;	/* Handle for this timer's callout.  */
+ #endif /* MRIT_USE_SETCALLOUT */
+ };
+ 
+ extern int nmrtimer;		/* Size of mrtimer array.	      */
+ extern struct mrtimer *mrtimer; /* The array itself.		      */
+ extern struct mrtimer *mrfree;	/* A list of free mrtimer structures. */
+ #endif /* _KERNEL */
+ #endif /* MRITIMER */
+ 
  /*
   * Getkerninfo clock information structure
   */
***************
*** 132,137 ****
--- 159,168 ----
  int	itimerfix __P((struct timeval *tv));
  int	itimerdecr __P((struct itimerval *itp, int usec));
  void	microtime __P((struct timeval *tv));
+ #ifdef MRITIMER
+ /* Should this be here or in systm.h? */
+ void	mritexit __P((struct proc *p));
+ #endif /* MRITIMER */
  #else /* !_KERNEL */
  #include <time.h>