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Fix some missing logic and inconsistencies in child status logic; Fix a bug introduced into sigaction()

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git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5560 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2013-01-24 23:18:32 +00:00
parent 25e9b8d084
commit a2ec48846f
11 changed files with 324 additions and 108 deletions
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nuttx/sched/task_setup.c
+17 -10
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@@ -150,7 +150,8 @@ static int task_assignpid(FAR _TCB *tcb)
* Name: task_saveparent
*
* Description:
* Save the task ID of the parent task in the child task's TCB.
* Save the task ID of the parent task in the child task's TCB and allocate
* a child status structure to catch the child task's exit status.
*
* Parameters:
* tcb - The TCB of the new, child task.
@@ -177,11 +178,15 @@ static inline void task_saveparent(FAR _TCB *tcb, uint8_t ttype)
tcb->parent = rtcb->pid;
/* Exit status only needs to be retained for the case of tasks, however */
if (ttype == TCB_FLAG_TTYPE_TASK)
{
#ifdef CONFIG_SCHED_CHILD_STATUS
/* Exit status only needs to be retained for the case of tasks, however.
* Tasks can also suppress retention of their child status by applying
* the SA_NOCLDWAIT flag with sigaction()/
*/
if (ttype == TCB_FLAG_TTYPE_TASK &&
(rtcb->flags && TCB_FLAG_NOCLDWAIT) == 0)
{
FAR struct child_status_s *child;
/* Make sure that there is not already a structure for this PID in the
@@ -212,11 +217,11 @@ static inline void task_saveparent(FAR _TCB *tcb, uint8_t ttype)
task_addchild(rtcb, child);
}
#else
DEBUGASSERT(rtcb->nchildren < UINT16_MAX);
rtcb->nchildren++;
#endif
}
#else
DEBUGASSERT(rtcb->nchildren < UINT16_MAX);
rtcb->nchildren++;
#endif
}
#else
# define task_saveparent(tcb,ttype)
@@ -318,7 +323,9 @@ int task_schedsetup(FAR _TCB *tcb, int priority, start_t start, main_t main,
tcb->flags &= ~TCB_FLAG_TTYPE_MASK;
tcb->flags |= ttype;
/* Save the task ID of the parent task in the TCB */
/* Save the task ID of the parent task in the TCB and allocate
* a child status structure.
*/
task_saveparent(tcb, ttype);