Changeset 409 for trunk/kernel/kern/scheduler.h

Timestamp:

Dec 20, 2017, 4:51:09 PM (6 years ago)

Author:

alain

Message:

Fix bugs in exec

File:

• trunk/kernel/kern/scheduler.h (modified) (4 diffs)

trunk/kernel/kern/scheduler.h

@@ -49 +49 @@
     struct thread_s * idle;         /*! pointer on idle thread                              */
     struct thread_s * current;      /*! pointer on current running thread                   */
+    bool_t            sig_pending;  /*! signal_handller must be called when true            */
 }
 scheduler_t;
@@ -66 +67 @@
                             struct thread_s * thread );
 
-/********************************************************************************************* 
- *  This function removes a thread from the set of threads attached to a given core.
+/*********************************************************************************************
+ * This function remove a thread from its scheduler.re scheduler.
  *********************************************************************************************
  * @ thread  : local pointer on the thread descriptor.
@@ -87 +88 @@
 /*********************************************************************************************
  * This function scan all threads attached to a given core scheduler, and executes
- * the relevant actions for pending signals, such as the THREAD_SIG_KILL signal.
+ * the relevant actions for pending KILL or EXIT signals.
+ * It is called in by the sched_yield() function, with IRQ disabled. 
  *********************************************************************************************
  * @ core    : local pointer on the core descriptor.
  ********************************************************************************************/
 void sched_handle_signals( struct core_s * core );
-
-/********************************************************************************************* 
- * This function is used by the scheduler of a given core to actually kill a thread that has 
- * the SIG_KILL / SIG_SUICIDE signal set (following a thread_exit() or a thread_kill() event).
- * - It checks that the thread has released all locks => panic otherwise...
- * - It removes the thread from the scheduler.
- * - It reset the SIG_KILL signal to acknoledge the killer.
- * - In case of SIG_SUCIDE, it removes the detached thread from its process, and destroys it.
- *********************************************************************************************
- * @ thread  : local pointer on the thread descriptor.
- ********************************************************************************************/
-void sched_kill_thread( struct thread_s * thread );
 
 /*********************************************************************************************
@@ -123 +113 @@
 
 /********************************************************************************************* 
+ * This function unlink a thread identified by the <thread> pointer from its process. 
+ * It is called by the sched_handle_signals() function when one EXIT or KILL signal is set,
+ * and it implement the first step of a thread destructionebut can also be directly called by a local killer thread signal.
+ * - It detach the thread from the scheduler.
+ * - It detach the thread from the process.
+ * - It detach the thread from the parent thread when the thread is attached.
+ * - It destroys the thread descriptor.
+ * - It acknowledge the killer thread if it's a kill signal
+ *********************************************************************************************
+ * @ thread   : pointer on thread to be killed.
+ ********************************************************************************************/
+void sched_kill_thread( struct thread_s * thread );
+
+/********************************************************************************************* 
  * This function display the internal state of the local core identified by its <lid>.
  *********************************************************************************************