[riot-notifications] [RIOT-OS/RIOT] core: refactor thread info (#15506)

Kaspar Schleiser notifications at github.com
Wed Nov 25 14:51:34 CET 2020


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### Contribution description

This PR untangles core and ps a bit, by turning some of ps' direct accesses to thread_t fields to core API calls.
There are some left (mostly regarding stack defines), will do those in a later PR.

I consider this a minor refactor, so IMO no need for two ACKs.
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### Testing procedure

ps output is widely tested on CI, so a successful run should suffice.
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You can view, comment on, or merge this pull request online at:

  https://github.com/RIOT-OS/RIOT/pull/15506

-- Commit Summary --

  * core: thread: move thread_state_to_string() from ps.c
  * core/thread: add thread_get_status()
  * sys/ps: make use of thread_get_status()
  * core/thread: add thread_is_active()
  * sys/ps: make use of thread_is_active()

-- File Changes --

    M core/include/thread.h (28)
    M core/thread.c (28)
    M sys/ps/ps.c (46)

-- Patch Links --

https://github.com/RIOT-OS/RIOT/pull/15506.patch
https://github.com/RIOT-OS/RIOT/pull/15506.diff

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