96 lines
3.8 KiB
C
96 lines
3.8 KiB
C
/************************************************************************
|
|
* sched/sched_lockcount.c
|
|
*
|
|
* Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Included Files
|
|
************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "os_internal.h"
|
|
|
|
/************************************************************************
|
|
* Definitions
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Private Type Declarations
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Global Variables
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Private Variables
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Private Function Prototypes
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Private Functionss
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Public Functions
|
|
************************************************************************/
|
|
|
|
/************************************************************************
|
|
* Name: sched_lockcount
|
|
*
|
|
* Description:
|
|
* This function returns the current value of the lockcount.
|
|
* If zero, preemption is enabled; if non-zero, this value
|
|
* indicates the number of times that osTask() has been
|
|
* called on this thread of execution.
|
|
*
|
|
* Inputs:
|
|
* None
|
|
*
|
|
* Return Value:
|
|
* lockcount
|
|
*
|
|
************************************************************************/
|
|
|
|
int32_t sched_lockcount(void)
|
|
{
|
|
_TCB *rtcb = (_TCB*)g_readytorun.head;
|
|
return (int32_t)rtcb->lockcount;
|
|
}
|