Changeset 296 for trunk/kernel/kern/scheduler.h

Timestamp:

Jul 31, 2017, 1:59:52 PM (7 years ago)

Author:

alain

Message:

Several modifs in the generic scheduler and in the hal_context to
fix the context switch mechanism.

File:

• trunk/kernel/kern/scheduler.h (modified) (3 diffs)

trunk/kernel/kern/scheduler.h

@@ -36 +36 @@
 /*********************************************************************************************
  * This structure define the scheduler associated to a given core.
- * WARNING : the idle thread is executed when there is no runable thread in the list 
- * of attached threads, but is NOT part of the list of attached threads.
  ********************************************************************************************/
 
@@ -78 +76 @@
  * This function handles pending signals for all registered threads, and tries to make 
  * a context switch for the core running the calling thread.
- * - If there is a runable thread (other than the current thread or the idle thread),
- *   the calling thread is descheduled, but its state is not modified.
+ * - If the <next> argument is not NULL, this next thread starts execution.
+ * - If <next> is NULL, it calls the sched_select() function. If there is a runable thread
+ *   (other than current thread or idle thread), this selected thread starts execution.
  * - If there is no other runable thread, the calling thread continues execution.
  * - If there is no runable thread, the idle thread is executed.
+ *********************************************************************************************
+ * @ next  : local pointer on next thread to run / call sched_select() if NULL.
  ********************************************************************************************/
-void sched_yield();
-
-/********************************************************************************************* 
- * This function handles pending signals for all registered threads, and make 
- * a context switch to the thread defined by the <thread> argument.
- * If the selected thread is not attached to the same core as the calling thread,
- * or is blocked, it causes a kernel panic.
- *********************************************************************************************
- * @ new   : local pointer on the thread to run.
- ********************************************************************************************/
-void sched_switch_to( struct thread_s * new );
+void sched_yield( struct thread_s * next );
 
 /*********************************************************************************************
@@ -130 +121 @@
 
 /********************************************************************************************* 
- * This function scan the list of kernel threads to find an idle (blocked) RPC thread.
- *********************************************************************************************
- * @ core    : local pointer on the core descriptor.
- * @ returns pointer on RPC thread descriptor / returns NULL if no idle RPC thread.
+ * This function display the internal state of the calling core scheduler.
  ********************************************************************************************/
-struct thread_s * sched_get_rpc_thead( struct core_s * core );
-
+void sched_display();