Add ostest vfork test (does not work yet)

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5488 42af7a65-404d-4744-a932-0658087f49c3

3 files changed, 13 insertions, 6 deletions

diff --git a/nuttx/sched/sched_addprioritized.c b/nuttx/sched/sched_addprioritized.c
index 8f19a4731..20178fb9c 100644
--- a/nuttx/sched/sched_addprioritized.c
+++ b/nuttx/sched/sched_addprioritized.c
@@ -114,7 +114,7 @@ bool sched_addprioritized(FAR _TCB *tcb, DSEG dq_queue_t *list)
       (next && sched_priority <= next->sched_priority);
       next = next->flink);
 
-  /* Add the tcb to the spot found in the list.  Check if the tcb 
+  /* Add the tcb to the spot found in the list.  Check if the tcb
    * goes at the end of the list. NOTE:  This could only happen if list
    * is the g_pendingtasks list!
    */
diff --git a/nuttx/sched/sched_addreadytorun.c b/nuttx/sched/sched_addreadytorun.c
index f6117b6ff..1e1829343 100644
--- a/nuttx/sched/sched_addreadytorun.c
+++ b/nuttx/sched/sched_addreadytorun.c
@@ -84,8 +84,8 @@
  *   btcb - Points to the blocked TCB that is ready-to-run
  *
  * Return Value:
- *   true if the currently active task (the head of the 
- *     g_readytorun list) has changed.
+ *   true if the currently active task (the head of the g_readytorun list)
+ *   has changed.
  *
  * Assumptions:
  * - The caller has established a critical section before
@@ -104,7 +104,7 @@ bool sched_addreadytorun(FAR _TCB *btcb)
   bool ret;
 
   /* Check if pre-emption is disabled for the current running task and if
-   * the new ready-to-run task  would cause the current running task to be
+   * the new ready-to-run task would cause the current running task to be
    * preempted.
    */
 
@@ -123,7 +123,7 @@ bool sched_addreadytorun(FAR _TCB *btcb)
 
   else if (sched_addprioritized(btcb, (FAR dq_queue_t*)&g_readytorun))
     {
-      /* Information the instrumentation logic that we are switching tasks */
+      /* Inform the instrumentation logic that we are switching tasks */
 
       sched_note_switch(rtcb, btcb);
 
diff --git a/nuttx/sched/task_vfork.c b/nuttx/sched/task_vfork.c
index 93fcb46da..64f6f0636 100644
--- a/nuttx/sched/task_vfork.c
+++ b/nuttx/sched/task_vfork.c
@@ -43,6 +43,7 @@
 #include <assert.h>
 #include <queue.h>
 #include <errno.h>
+#include <debug.h>
 
 #include <nuttx/sched.h>
 
@@ -151,12 +152,14 @@ FAR _TCB *task_vforksetup(start_t retaddr)
 
   /* Initialize the task control block.  This calls up_initial_state() */
 
+  svdbg("Child priority=%d start=%p\n", priority, retaddr);
   ret = task_schedsetup(child, priority, retaddr, parent->entry.main);
   if (ret != OK)
     {
       goto errout_with_tcb;
     }
 
+  svdbg("parent=%p, returning child=%p\n", parent, child);
   return child;
 
 errout_with_tcb:
@@ -210,10 +213,14 @@ errout_with_tcb:
 
 pid_t task_vforkstart(FAR _TCB *child)
 {
+#if CONFIG_TASK_NAME_SIZE > 0
+  _TCB *parent = (FAR _TCB *)g_readytorun.head;
+#endif
   FAR const char *name;
   pid_t pid;
   int ret;
 
+  svdbg("Starting Child TCB=%p, parent=%p\n", child, g_readytorun.head);
   DEBUGASSERT(child);
 
   /* Setup to pass parameters to the new task */
@@ -221,7 +228,7 @@ pid_t task_vforkstart(FAR _TCB *child)
 #if CONFIG_TASK_NAME_SIZE > 0
   name = parent->name;
 #else
-  name = "<noname>";
+  name = NULL;
 #endif
 
   (void)task_argsetup(child, name, (const char **)NULL);