kernel: Add new k_thread_abort()/k_thread_join()
Add a newer, much smaller and simpler implementation of abort and
join. No need to involve the idle thread. No need for a special code
path for self-abort. Joining a thread and waiting for an aborting one
to terminate elsewhere share an implementation. All work in both
calls happens under a single locked path with no unexpected
synchronization points.
This fixes a bug with the current implementation where the action of
z_sched_single_abort() was nonatomic, releasing the lock internally at
a point where the thread to be aborted could self-abort and confuse
the state such that it failed to abort at all.
Note that the arm32 and native_posix architectures, which have their
own thread abort implementations, now see a much simplified
"z_thread_abort()" internal API.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
diff --git a/kernel/include/kernel_internal.h b/kernel/include/kernel_internal.h
index 7ca6c9f..8ced654 100644
--- a/kernel/include/kernel_internal.h
+++ b/kernel/include/kernel_internal.h
@@ -151,7 +151,7 @@
/* Memory domain setup hook, called from z_setup_new_thread() */
void z_mem_domain_init_thread(struct k_thread *thread);
-/* Memory domain teardown hook, called from z_thread_single_abort() */
+/* Memory domain teardown hook, called from z_thread_abort() */
void z_mem_domain_exit_thread(struct k_thread *thread);
/* This spinlock:
