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errno was clobbered by mm_trysemaphore when task exists

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@591 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2008-01-30 18:49:31 +00:00
parent c773c4e139
commit 9654e2d4b4
16 changed files with 396 additions and 427 deletions
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sched/task_delete.c
+31 -34
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@@ -1,7 +1,7 @@
/************************************************************
* task_delete.c
/****************************************************************************
* sched/task_delete.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
@@ -31,11 +31,11 @@
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Included Files
************************************************************/
****************************************************************************/
#include <nuttx/config.h>
@@ -46,41 +46,40 @@
# include "sig_internal.h"
#endif
/************************************************************
/****************************************************************************
* Definitions
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Private Type Declarations
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Global Variables
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Private Variables
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Private Function Prototypes
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Private Functions
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Public Functions
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Name: task_delete
*
* Description:
* This function causes a specified task to cease to exist.
* Its stack and TCB will be deallocated. This function
* is the companion to task_create().
* This function causes a specified task to cease to exist. Its stack and
* TCB will be deallocated. This function is the companion to task_create().
*
* Inputs:
* pid - The task ID of the task to delete. A pid of zero
@@ -89,10 +88,10 @@
* Return Value:
* OK on success; or ERROR on failure
*
* This function can fail if the provided pid does not
* correspond to a task (errno is not set)
* This function can fail if the provided pid does not correspond to a
* task (errno is not set)
*
************************************************************/
****************************************************************************/
STATUS task_delete(pid_t pid)
{
@@ -106,17 +105,15 @@ STATUS task_delete(pid_t pid)
rtcb = (FAR _TCB*)g_readytorun.head;
if (pid == 0 || pid == rtcb->pid)
{
/* If it is, then what we really wanted to do was exit.
* Note that we don't bother to unlock the TCB since
* it will be going away.
/* If it is, then what we really wanted to do was exit. Note that we
* don't bother to unlock the TCB since it will be going away.
*/
exit(EXIT_SUCCESS);
}
/* Make sure the task does not become ready-to-run while
* we are futzing with its TCB by locking ourselves as the
* executing task.
/* Make sure the task does not become ready-to-run while we are futzing with
* its TCB by locking ourselves as the executing task.
*/
sched_lock();