utility/rtos_compatibility_layers/posix/px_pth_attr_init.c


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/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation 
 * 
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 * 
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */ 
/** POSIX wrapper for THREADX                                             */ 
/**                                                                       */
/**                                                                       */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

/* Include necessary system files.  */

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


/**************************************************************************/ 
/*                                                                        */ 
/*  FUNCTION                                               RELEASE        */ 
/*                                                                        */ 
/*    pthread_attr_init                                   PORTABLE C      */ 
/*                                                           6.1.7        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    William E. Lamie, Microsoft Corporation                             */
/*                                                                        */
/*  DESCRIPTION                                                           */ 
/*                                                                        */ 
/*    This function initializes a pthread attributes object to default    */
/*    values,if the object is already created this call will reinitialize */
/*    it else it will create a new attr object and initializes it.        */  
/*                                                                        */
/*                                                                        */
/*  INPUT                                                                 */ 
/*                                                                        */
/*    attr                           Address of the thread attributes     */
/*                                                                        */ 
/*  OUTPUT                                                                */ 
/*                                                                        */ 
/*     0                             if successful                        */ 
/*     Value                         in case of any error                 */ 
/*                                                                        */ 
/*  CALLS                                                                 */ 
/*                                                                        */ 
/*    set_default_pthread_attr       to reset with defualt parameters     */
/*                                                                        */ 
/*  CALLED BY                                                             */ 
/*                                                                        */ 
/*    Application Code                                                    */ 
/*                                                                        */ 
/*  RELEASE HISTORY                                                       */ 
/*                                                                        */ 
/*    DATE              NAME                      DESCRIPTION             */
/*                                                                        */
/*  06-02-2021     William E. Lamie         Initial Version 6.1.7         */
/*                                                                        */
/**************************************************************************/
INT pthread_attr_init(pthread_attr_t *attr)
{

TX_INTERRUPT_SAVE_AREA

    TX_DISABLE
    
    /* Check this attributes object exists ? */
    if (attr->inuse  == TX_FALSE)
        attr->inuse = TX_TRUE;

    set_default_pthread_attr(attr);

    TX_RESTORE
    return(OK);
}