80 lines
3.0 KiB
C
80 lines
3.0 KiB
C
/****************************************************************************
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* sched/pthread/pthread_get_stacksize_np.c
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*
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* Copyright (C) 2018 Geoff Norton. All rights reserved.
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* Author: Geoff Norton <grompf@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <pthread.h>
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#include <errno.h>
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#include "pthread/pthread.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_get_stacksize_np
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*
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* Description:
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* Get a pointer to the base of the pthread stack
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*
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* Parameters:
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* pthread_t - The pthread being queried
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*
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* Returned Value:
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* A positive, non-zerp pthread stack address is returned on success. A
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* negative value is returned in the case that the 'thread' argument does
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* not refer to a valid thread.
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*
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****************************************************************************/
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ssize_t pthread_get_stacksize_np(pthread_t thread)
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{
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FAR struct pthread_tcb_s *tcb =
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(FAR struct pthread_tcb_s *)sched_gettcb((pid_t)thread);
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if (tcb == NULL)
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{
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return -EINVAL;
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}
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return tcb->cmn.adj_stack_size;
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}
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