mirror of
https://github.com/azure-rtos/threadx
synced 2025-01-30 08:02:57 +08:00
126 lines
6.0 KiB
C
126 lines
6.0 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** ThreadX Component */
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/** */
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/** Block Pool */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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#define TX_SOURCE_CODE
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/* Include necessary system files. */
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#include "tx_api.h"
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#include "tx_block_pool.h"
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _txe_block_release PORTABLE C */
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/* 6.1 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function checks for errors in the block release function call. */
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/* */
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/* INPUT */
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/* */
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/* block_ptr Pointer to memory block */
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/* */
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/* OUTPUT */
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/* */
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/* TX_PTR_ERROR Invalid memory block pointer */
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/* status Actual completion status */
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/* */
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/* CALLS */
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/* */
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/* _tx_block_release Actual block release function */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */
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/* 09-30-2020 Yuxin Zhou Modified comment(s), */
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/* resulting in version 6.1 */
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/* */
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/**************************************************************************/
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UINT _txe_block_release(VOID *block_ptr)
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{
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UINT status;
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TX_BLOCK_POOL *pool_ptr;
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UCHAR **indirect_ptr;
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UCHAR *work_ptr;
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/* First check the supplied pointer. */
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if (block_ptr == TX_NULL)
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{
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/* The block pointer is invalid, return appropriate status. */
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status = TX_PTR_ERROR;
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}
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else
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{
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/* Pickup the pool pointer which is just previous to the starting
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address of block that the caller sees. */
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work_ptr = TX_VOID_TO_UCHAR_POINTER_CONVERT(block_ptr);
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work_ptr = TX_UCHAR_POINTER_SUB(work_ptr, (sizeof(UCHAR *)));
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indirect_ptr = TX_UCHAR_TO_INDIRECT_UCHAR_POINTER_CONVERT(work_ptr);
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work_ptr = *indirect_ptr;
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pool_ptr = TX_UCHAR_TO_BLOCK_POOL_POINTER_CONVERT(work_ptr);
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/* Check for an invalid pool pointer. */
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if (pool_ptr == TX_NULL)
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{
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/* Pool pointer is invalid, return appropriate error code. */
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status = TX_PTR_ERROR;
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}
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/* Now check for invalid pool ID. */
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else if (pool_ptr -> tx_block_pool_id != TX_BLOCK_POOL_ID)
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{
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/* Pool pointer is invalid, return appropriate error code. */
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status = TX_PTR_ERROR;
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}
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else
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{
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/* Call actual block release function. */
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status = _tx_block_release(block_ptr);
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}
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}
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/* Return completion status. */
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return(status);
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}
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