On Sun, Aug 04, 2002 at 03:20:50PM +1200, Gregory McGarry wrote:

 > Changing ktrace to report the lwpid_t in struct ktr_header would
 > be very useful, and probably the correct way to go.  This will
 > break backward compatibility.  Is this an issue?

Maybe a new ktr_lwp_header could be invented, and single LWP processes
would get the old one, and multi-LWP processes would get the new one.

Maybe like:

struct ktr_lwp_header {
	int	ktr_len;
	short	ktr_type;
	pid_t	ktr_pid;
	lwpid_t	ktr_lwpid;
	char	ktr_comm[MAXCOMLEN+1];
	struct	timeval ktr_time;
	caddr_t	ktr_buf;
};

#define	KTR_TYPE_MASK		0x0fff
#define	KTR_TYPE_LWP		0x1000	/* means "ktr_lwp_header" */

-- 
        -- Jason R. Thorpe <thorpej@wasabisystems.com>