threadx/utility/rtos_compatibility_layers/posix/px_pth_attr_setstack.c

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/*                                                                        */
/*       Copyright (c) Microsoft Corporation. All rights reserved.        */
/*                                                                        */
/*       This software is licensed under the Microsoft Software License   */
/*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
/*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
/*       and in the root directory of this software.                      */
/*                                                                        */
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/**                                                                       */ 
/** POSIX wrapper for THREADX                                             */ 
/**                                                                       */
/**                                                                       */
/**                                                                       */
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/* Include necessary system files.  */

#include "tx_api.h"    /* Threadx API */
#include "pthread.h"  /* Posix API */
#include "px_int.h"    /* Posix helper functions */


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/*                                                                        */ 
/*  FUNCTION                                               RELEASE        */ 
/*                                                                        */ 
/*    pthread_attr_setstack                               PORTABLE C      */ 
/*                                                           6.1.7        */ 
/*  AUTHOR                                                                */ 
/*                                                                        */ 
/*    William E. Lamie, Microsoft Corporation                             */
/*                                                                        */ 
/*  DESCRIPTION                                                           */ 
/*                                                                        */ 
/*     This function sets the thread creation stack attributes stackaddr  */
/*     and stacksize in the attr object.                                  */
/*     The stack attributes specify the area of storage to be used for the*/
/*     created thread<61>s stack. The base  (lowest addressable byte) of  */
/*     the storage shall be stackaddr , and the size of the storage shall */
/*     be stacksize bytes.                                                */ 
/*                                                                        */
/*  INPUT                                                                 */ 
/*                                                                        */
/*    attr                           Address of the thread attributes     */
/*    stackaddr                      Address of stack                     */
/*    stacksize                      Holds the stack size                 */ 
/*                                                                        */ 
/*  OUTPUT                                                                */ 
/*                                                                        */ 
/*     0                             if successful                        */ 
/*     Value                         in case of any error                 */ 
/*                                                                        */ 
/*  CALLS                                                                 */ 
/*                                                                        */ 
/*    None                                                                */ 
/*                                                                        */ 
/*  CALLED BY                                                             */ 
/*                                                                        */ 
/*    Application Code                                                    */ 
/*                                                                        */ 
/*  RELEASE HISTORY                                                       */ 
/*                                                                        */ 
/*    DATE              NAME                      DESCRIPTION             */ 
/*                                                                        */ 
/*  06-02-2021     William E. Lamie         Initial Version 6.1.7         */
/*                                                                        */ 
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INT pthread_attr_setstack( pthread_attr_t *attr,void *stackaddr,
                         size_t stacksize)
{
    /* First check the attribute object is already destroyed? */
    if (attr->inuse == TX_FALSE)
    {
        posix_errno = EINVAL;
	    posix_set_pthread_errno(EINVAL);
        return(EINVAL);
    }
    else
    {
        attr->stack_address = stackaddr; /* This has got no effect */
        attr->stack_size = stacksize;
        return(OK);
    }      
}