93 lines
5.1 KiB
C
93 lines
5.1 KiB
C
/**************************************************************************/
|
|
/* */
|
|
/* 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. */
|
|
/* */
|
|
/**************************************************************************/
|
|
|
|
|
|
/**************************************************************************/
|
|
/**************************************************************************/
|
|
/** */
|
|
/** 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_mutexattr_init PORTABLE C */
|
|
/* 6.1.7 */
|
|
/* AUTHOR */
|
|
/* */
|
|
/* William E. Lamie, Microsoft Corporation */
|
|
/* */
|
|
/* DESCRIPTION */
|
|
/* */
|
|
/* This function initializes a pthread mutex attributes object to */
|
|
/* default values, if the object is already created this call will */
|
|
/* return an error. */
|
|
/* */
|
|
/* INPUT */
|
|
/* */
|
|
/* attr Pointer to a mutex attributes */
|
|
/* */
|
|
/* OUTPUT */
|
|
/* */
|
|
/* 0 If successful */
|
|
/* Value In case of any error */
|
|
/* */
|
|
/* CALLS */
|
|
/* */
|
|
/* posix_allocate_pthread_mutexattr Get a new mutexattr object */
|
|
/* set_default_mutexattr Set mutexattr with default values */
|
|
/* */
|
|
/* CALLED BY */
|
|
/* */
|
|
/* Application Code */
|
|
/* */
|
|
/* RELEASE HISTORY */
|
|
/* */
|
|
/* DATE NAME DESCRIPTION */
|
|
/* */
|
|
/* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
|
|
/* */
|
|
/**************************************************************************/
|
|
INT pthread_mutexattr_init(pthread_mutexattr_t *attr)
|
|
{
|
|
|
|
TX_INTERRUPT_SAVE_AREA
|
|
|
|
|
|
/* Disable interrupts. */
|
|
TX_DISABLE
|
|
|
|
/* Check this attributes object exists ? */
|
|
if (attr->in_use == TX_TRUE)
|
|
{
|
|
posix_errno = EINVAL;
|
|
posix_set_pthread_errno(EINVAL);
|
|
TX_RESTORE
|
|
return (EINVAL);
|
|
}
|
|
attr->in_use = TX_TRUE;
|
|
set_default_mutexattr(attr);
|
|
TX_RESTORE
|
|
return(OK);
|
|
}
|