Re: [PATCH] Add last processor to process stat

[Almudena Garcia]

Attached Hurd patch

El dom., 27 oct. 2019 a las 20:13, Almudena Garcia (<liberamenso10000@gmail.com>) escribió:

> Please really add it to thread_sched_info_t.

Fixed. Now working in Hurd patch

El dom., 27 oct. 2019 a las 19:56, Samuel Thibault (<samuel.thibault@gnu.org>) escribió:

Almudena Garcia, le dim. 27 oct. 2019 19:44:23 +0100, a ecrit:
>     > + #if THREAD_BASIC_INFO_COUNT > 10
>
>     That will be always true. What you want to check is *thread_info_count.
>
> --- gnumach/kern/thread.c     2019-09-03 01:22:10.932747830 +0200
> +++ GNUMach_SMP/kern/thread.c 2019-10-27 19:42:15.360761959 +0100
> @@ -1500,11 +1500,11 @@
>       if (flavor == THREAD_BASIC_INFO) {
>           thread_basic_info_t basic_info;
> 
> -         /* Allow *thread_info_count to be one smaller than the
> -            usual amount, because creation_time is a new member
> -            that some callers might not know about. */
> +         /* Allow *thread_info_count to be two smaller than the
> +            usual amount, because creation_time and last_processor
> +                are new members that some callers might not know about. */
> 
> -         if (*thread_info_count < THREAD_BASIC_INFO_COUNT - 1) {
> +         if (*thread_info_count < THREAD_BASIC_INFO_COUNT - 2) {
[...]
> +             /* Check if the basic_info includes all new members (including last_processor) */
> +             if (*thread_info_count == THREAD_BASIC_INFO_COUNT) {

Yes, that's the idea (though you want a >= instead of ==, so that it
will work after adding another field).

That being said I now realize you added the field to the
thread_basic_info_t, while the information really belongs to the
thread_sched_info_t. Please really add it to thread_sched_info_t. You
have access to it from procfs's process_file_gc_stat by adding

thread_basic_info_t thsi = proc_stat_thread_sched_info (ps);

Samuel

add_lastprocessor_v4.patch
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