Changeset 103939e in mainline

Timestamp:

2019-08-06T20:15:57Z (5 years ago)

Author:

Matthieu Riolo <matthieu.riolo@…>

Children:

0a8f070

Parents:

fb13b44

git-author:

Michal Koutný <xm.koutny+hos@…> (2015-08-10 13:51:22)

git-committer:

Matthieu Riolo <matthieu.riolo@…> (2019-08-06 20:15:57)

Message:

Create EVENT_EXIT for task termination

Conflicts:

kernel/generic/src/proc/task.c
kernel/generic/src/proc/thread.c

Files:

• abi/include/abi/ipc/event.h (modified) (1 diff)
• kernel/generic/src/proc/task.c (modified) (3 diffs)
• kernel/generic/src/proc/thread.c (modified) (1 diff)

abi/include/abi/ipc/event.h

@@ -44 +44 @@
         /** A task/thread has faulted and will be terminated */
         EVENT_FAULT,
+        /** A task terminated (on its own or it was killed) */
+        EVENT_EXIT,
         /** New data available in kernel log */
         EVENT_KLOG,

kernel/generic/src/proc/task.c

@@ -586 +586 @@
 /** Kill the currently running task.
  *
- * @param notify Send out fault notifications.
+ * @param fault Send out fault notifications.
  *
  * @return Zero on success or an error code from errno.h.
  *
  */
-void task_kill_self(bool notify)
+void task_kill_self(bool fault)
 {
         /*
@@ -599 +599 @@
          * that's all you get.
          */
-        if (notify) {
+        if (fault) {
                 /* Notify the subscriber that a fault occurred. */
                 if (event_notify_3(EVENT_FAULT, false, LOWER32(TASK->taskid),
@@ -619 +619 @@
 /** Process syscall to terminate the current task.
  *
- * @param notify Send out fault notifications.
- *
- */
-sys_errno_t sys_task_exit(sysarg_t notify)
-{
-        task_kill_self(notify);
+ * @param fault Send out fault notifications.
+ *
+ */
+sys_errno_t sys_task_exit(sysarg_t fault)
+{
+        task_kill_self(fault);
         unreachable();
 }

kernel/generic/src/proc/thread.c

@@ -522 +522 @@
                         sys_waitq_task_cleanup();
                         LOG("Cleanup of task %" PRIu64 " completed.", TASK->taskid);
+
+                        /*
+                         * Notify about task exit, it is meant to be signalled
+                         * after any IPC cleanup operations. Ignore any errors.
+                         */
+                        (void)event_notify_2(EVENT_EXIT, false,
+                            LOWER32(TASK->taskid), UPPER32(TASK->taskid));
                 }
         }