Does task_info support the TASK_EVENTS_INFO type of information?

[Da Zheng]

Hi,

I tried the code below:
 struct task_events_info taskevents;
 size_t tkcount = TASK_EVENTS_INFO_COUNT;
 error_t err;

 err = task_info (mach_task_self (), TASK_EVENTS_INFO,
                          (task_info_t) &taskevents, &tkcount);
 assert_perror (err);

and I always get the error:
Unexpected error: (os/kern) invalid argument.

It seems to me that the Mach doesn't support TASK_EVENTS_INFO.
I read Mach 3 Kernel Interfaces and it seems that the original Mach only 
supports TASK_BASIC_INFO and TASK_THREAD_TIMES_INFO, but The GNU Mach 
Reference Manual mentions TASK_EVENTS_INFO. I assume that this feature 
is added in GNU Mach.

I use Debian/Hurd, and the version of Mach is GNU Mach 1.3.99. I wonder 
which version of GNU Mach supports TASK_EVENTS_INFO.

Best regards,
Zheng Da