146 lines
6.4 KiB
C
146 lines
6.4 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. */
|
||
|
|
/* */
|
||
|
|
/**************************************************************************/
|
||
|
|
|
||
|
|
|
||
|
|
/**************************************************************************/
|
||
|
|
/**************************************************************************/
|
||
|
|
/** */
|
||
|
|
/** ThreadX Component */
|
||
|
|
/** */
|
||
|
|
/** Semaphore */
|
||
|
|
/** */
|
||
|
|
/**************************************************************************/
|
||
|
|
/**************************************************************************/
|
||
|
|
|
||
|
|
#define TX_SOURCE_CODE
|
||
|
|
|
||
|
|
|
||
|
|
/* Include necessary system files. */
|
||
|
|
|
||
|
|
#include "tx_api.h"
|
||
|
|
#include "tx_thread.h"
|
||
|
|
#include "tx_timer.h"
|
||
|
|
#include "tx_semaphore.h"
|
||
|
|
|
||
|
|
|
||
|
|
/**************************************************************************/
|
||
|
|
/* */
|
||
|
|
/* FUNCTION RELEASE */
|
||
|
|
/* */
|
||
|
|
/* _txe_semaphore_delete PORTABLE C */
|
||
|
|
/* 6.1 */
|
||
|
|
/* AUTHOR */
|
||
|
|
/* */
|
||
|
|
/* William E. Lamie, Microsoft Corporation */
|
||
|
|
/* */
|
||
|
|
/* DESCRIPTION */
|
||
|
|
/* */
|
||
|
|
/* This function checks for errors in the semaphore delete function */
|
||
|
|
/* call. */
|
||
|
|
/* */
|
||
|
|
/* INPUT */
|
||
|
|
/* */
|
||
|
|
/* semaphore_ptr Pointer to semaphore control block*/
|
||
|
|
/* */
|
||
|
|
/* OUTPUT */
|
||
|
|
/* */
|
||
|
|
/* TX_SEMAPHORE_ERROR Invalid semaphore pointer */
|
||
|
|
/* TX_CALLER_ERROR Invalid caller of this function */
|
||
|
|
/* status Actual completion status */
|
||
|
|
/* */
|
||
|
|
/* CALLS */
|
||
|
|
/* */
|
||
|
|
/* _tx_semaphore_delete Actual delete semaphore function */
|
||
|
|
/* */
|
||
|
|
/* CALLED BY */
|
||
|
|
/* */
|
||
|
|
/* Application Code */
|
||
|
|
/* */
|
||
|
|
/* RELEASE HISTORY */
|
||
|
|
/* */
|
||
|
|
/* DATE NAME DESCRIPTION */
|
||
|
|
/* */
|
||
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */
|
||
|
|
/* 09-30-2020 Yuxin Zhou Modified comment(s), */
|
||
|
|
/* resulting in version 6.1 */
|
||
|
|
/* */
|
||
|
|
/**************************************************************************/
|
||
|
|
UINT _txe_semaphore_delete(TX_SEMAPHORE *semaphore_ptr)
|
||
|
|
{
|
||
|
|
|
||
|
|
UINT status;
|
||
|
|
#ifndef TX_TIMER_PROCESS_IN_ISR
|
||
|
|
TX_THREAD *thread_ptr;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/* Default status to success. */
|
||
|
|
status = TX_SUCCESS;
|
||
|
|
|
||
|
|
/* Check for an invalid semaphore pointer. */
|
||
|
|
if (semaphore_ptr == TX_NULL)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Semaphore pointer is invalid, return appropriate error code. */
|
||
|
|
status = TX_SEMAPHORE_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Now check for invalid semaphore ID. */
|
||
|
|
else if (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Semaphore pointer is invalid, return appropriate error code. */
|
||
|
|
status = TX_SEMAPHORE_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Check for invalid caller of this function. */
|
||
|
|
|
||
|
|
/* Is the caller an ISR or Initialization? */
|
||
|
|
if (TX_THREAD_GET_SYSTEM_STATE() != ((ULONG) 0))
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Invalid caller of this function, return appropriate error code. */
|
||
|
|
status = TX_CALLER_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef TX_TIMER_PROCESS_IN_ISR
|
||
|
|
else
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Pickup thread pointer. */
|
||
|
|
TX_THREAD_GET_CURRENT(thread_ptr)
|
||
|
|
|
||
|
|
/* Is the caller the system timer thread? */
|
||
|
|
if (thread_ptr == &_tx_timer_thread)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Invalid caller of this function, return appropriate error code. */
|
||
|
|
status = TX_CALLER_ERROR;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Determine if everything is okay. */
|
||
|
|
if (status == TX_SUCCESS)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* Call actual semaphore delete function. */
|
||
|
|
status = _tx_semaphore_delete(semaphore_ptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Return completion status. */
|
||
|
|
return(status);
|
||
|
|
}
|
||
|
|
|