From 2b1ba741d5c813df07feb2c37aab7cb2c5c4f947 Mon Sep 17 00:00:00 2001 From: Christian Pointner Date: Sun, 4 Aug 2013 22:54:56 +0000 Subject: remove old FreeRTOS based MPU files git-svn-id: https://svn.spreadspace.org/mur.sat@824 7de4ea59-55d0-425e-a1af-a3118ea81d4c --- contrib/FreeRTOS_Library/portable/heap_2.c | 278 ----------------------------- 1 file changed, 278 deletions(-) delete mode 100644 contrib/FreeRTOS_Library/portable/heap_2.c (limited to 'contrib/FreeRTOS_Library/portable/heap_2.c') diff --git a/contrib/FreeRTOS_Library/portable/heap_2.c b/contrib/FreeRTOS_Library/portable/heap_2.c deleted file mode 100644 index fbb8755..0000000 --- a/contrib/FreeRTOS_Library/portable/heap_2.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd. - - *************************************************************************** - * * - * If you are: * - * * - * + New to FreeRTOS, * - * + Wanting to learn FreeRTOS or multitasking in general quickly * - * + Looking for basic training, * - * + Wanting to improve your FreeRTOS skills and productivity * - * * - * then take a look at the FreeRTOS books - available as PDF or paperback * - * * - * "Using the FreeRTOS Real Time Kernel - a Practical Guide" * - * http://www.FreeRTOS.org/Documentation * - * * - * A pdf reference manual is also available. Both are usually delivered * - * to your inbox within 20 minutes to two hours when purchased between 8am * - * and 8pm GMT (although please allow up to 24 hours in case of * - * exceptional circumstances). Thank you for your support! * - * * - *************************************************************************** - - This file is part of the FreeRTOS distribution. - - FreeRTOS is free software; you can redistribute it and/or modify it under - the terms of the GNU General Public License (version 2) as published by the - Free Software Foundation AND MODIFIED BY the FreeRTOS exception. - ***NOTE*** The exception to the GPL is included to allow you to distribute - a combined work that includes FreeRTOS without being obliged to provide the - source code for proprietary components outside of the FreeRTOS kernel. - FreeRTOS is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - more details. You should have received a copy of the GNU General Public - License and the FreeRTOS license exception along with FreeRTOS; if not it - can be viewed here: http://www.freertos.org/a00114.html and also obtained - by writing to Richard Barry, contact details for whom are available on the - FreeRTOS WEB site. - - 1 tab == 4 spaces! - - http://www.FreeRTOS.org - Documentation, latest information, license and - contact details. - - http://www.SafeRTOS.com - A version that is certified for use in safety - critical systems. - - http://www.OpenRTOS.com - Commercial support, development, porting, - licensing and training services. -*/ - -/* - * A sample implementation of pvPortMalloc() and vPortFree() that permits - * allocated blocks to be freed, but does not combine adjacent free blocks - * into a single larger block. - * - * See heap_1.c and heap_3.c for alternative implementations, and the memory - * management pages of http://www.FreeRTOS.org for more information. - */ -#include - -/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining -all the API functions to use the MPU wrappers. That should only be done when -task.h is included from an application file. */ -#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE - -#include "FreeRTOS.h" -#include "task.h" - -#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE - -/* Allocate the memory for the heap. The struct is used to force byte -alignment without using any non-portable code. */ -static union xRTOS_HEAP -{ - #if portBYTE_ALIGNMENT == 8 - volatile portDOUBLE dDummy; - #else - volatile unsigned long ulDummy; - #endif - unsigned char ucHeap[ configTOTAL_HEAP_SIZE ]; -} xHeap; - -/* Define the linked list structure. This is used to link free blocks in order -of their size. */ -typedef struct A_BLOCK_LINK -{ - struct A_BLOCK_LINK *pxNextFreeBlock; /*<< The next free block in the list. */ - size_t xBlockSize; /*<< The size of the free block. */ -} xBlockLink; - - -static const unsigned short heapSTRUCT_SIZE = ( sizeof( xBlockLink ) + portBYTE_ALIGNMENT - ( sizeof( xBlockLink ) % portBYTE_ALIGNMENT ) ); -#define heapMINIMUM_BLOCK_SIZE ( ( size_t ) ( heapSTRUCT_SIZE * 2 ) ) - -/* Create a couple of list links to mark the start and end of the list. */ -static xBlockLink xStart, xEnd; - -/* Keeps track of the number of free bytes remaining, but says nothing about -fragmentation. */ -static size_t xFreeBytesRemaining = configTOTAL_HEAP_SIZE; - -/* STATIC FUNCTIONS ARE DEFINED AS MACROS TO MINIMIZE THE FUNCTION CALL DEPTH. */ - -/* - * Insert a block into the list of free blocks - which is ordered by size of - * the block. Small blocks at the start of the list and large blocks at the end - * of the list. - */ -#define prvInsertBlockIntoFreeList( pxBlockToInsert ) \ -{ \ -xBlockLink *pxIterator; \ -size_t xBlockSize; \ - \ - xBlockSize = pxBlockToInsert->xBlockSize; \ - \ - /* Iterate through the list until a block is found that has a larger size */ \ - /* than the block we are inserting. */ \ - for( pxIterator = &xStart; pxIterator->pxNextFreeBlock->xBlockSize < xBlockSize; pxIterator = pxIterator->pxNextFreeBlock ) \ - { \ - /* There is nothing to do here - just iterate to the correct position. */ \ - } \ - \ - /* Update the list to include the block being inserted in the correct */ \ - /* position. */ \ - pxBlockToInsert->pxNextFreeBlock = pxIterator->pxNextFreeBlock; \ - pxIterator->pxNextFreeBlock = pxBlockToInsert; \ -} -/*-----------------------------------------------------------*/ - -#define prvHeapInit() \ -{ \ -xBlockLink *pxFirstFreeBlock; \ - \ - /* xStart is used to hold a pointer to the first item in the list of free */ \ - /* blocks. The void cast is used to prevent compiler warnings. */ \ - xStart.pxNextFreeBlock = ( void * ) xHeap.ucHeap; \ - xStart.xBlockSize = ( size_t ) 0; \ - \ - /* xEnd is used to mark the end of the list of free blocks. */ \ - xEnd.xBlockSize = configTOTAL_HEAP_SIZE; \ - xEnd.pxNextFreeBlock = NULL; \ - \ - /* To start with there is a single free block that is sized to take up the \ - entire heap space. */ \ - pxFirstFreeBlock = ( void * ) xHeap.ucHeap; \ - pxFirstFreeBlock->xBlockSize = configTOTAL_HEAP_SIZE; \ - pxFirstFreeBlock->pxNextFreeBlock = &xEnd; \ -} -/*-----------------------------------------------------------*/ - -void *pvPortMalloc( size_t xWantedSize ) -{ -xBlockLink *pxBlock, *pxPreviousBlock, *pxNewBlockLink; -static portBASE_TYPE xHeapHasBeenInitialised = pdFALSE; -void *pvReturn = NULL; - - vTaskSuspendAll(); - { - /* If this is the first call to malloc then the heap will require - initialisation to setup the list of free blocks. */ - if( xHeapHasBeenInitialised == pdFALSE ) - { - prvHeapInit(); - xHeapHasBeenInitialised = pdTRUE; - } - - /* The wanted size is increased so it can contain a xBlockLink - structure in addition to the requested amount of bytes. */ - if( xWantedSize > 0 ) - { - xWantedSize += heapSTRUCT_SIZE; - - /* Ensure that blocks are always aligned to the required number of bytes. */ - if( xWantedSize & portBYTE_ALIGNMENT_MASK ) - { - /* Byte alignment required. */ - xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) ); - } - } - - if( ( xWantedSize > 0 ) && ( xWantedSize < configTOTAL_HEAP_SIZE ) ) - { - /* Blocks are stored in byte order - traverse the list from the start - (smallest) block until one of adequate size is found. */ - pxPreviousBlock = &xStart; - pxBlock = xStart.pxNextFreeBlock; - while( ( pxBlock->xBlockSize < xWantedSize ) && ( pxBlock->pxNextFreeBlock ) ) - { - pxPreviousBlock = pxBlock; - pxBlock = pxBlock->pxNextFreeBlock; - } - - /* If we found the end marker then a block of adequate size was not found. */ - if( pxBlock != &xEnd ) - { - /* Return the memory space - jumping over the xBlockLink structure - at its start. */ - pvReturn = ( void * ) ( ( ( unsigned char * ) pxPreviousBlock->pxNextFreeBlock ) + heapSTRUCT_SIZE ); - - /* This block is being returned for use so must be taken our of the - list of free blocks. */ - pxPreviousBlock->pxNextFreeBlock = pxBlock->pxNextFreeBlock; - - /* If the block is larger than required it can be split into two. */ - if( ( pxBlock->xBlockSize - xWantedSize ) > heapMINIMUM_BLOCK_SIZE ) - { - /* This block is to be split into two. Create a new block - following the number of bytes requested. The void cast is - used to prevent byte alignment warnings from the compiler. */ - pxNewBlockLink = ( void * ) ( ( ( unsigned char * ) pxBlock ) + xWantedSize ); - - /* Calculate the sizes of two blocks split from the single - block. */ - pxNewBlockLink->xBlockSize = pxBlock->xBlockSize - xWantedSize; - pxBlock->xBlockSize = xWantedSize; - - /* Insert the new block into the list of free blocks. */ - prvInsertBlockIntoFreeList( ( pxNewBlockLink ) ); - } - - xFreeBytesRemaining -= pxBlock->xBlockSize; - } - } - } - xTaskResumeAll(); - - #if( configUSE_MALLOC_FAILED_HOOK == 1 ) - { - if( pvReturn == NULL ) - { - extern void vApplicationMallocFailedHook( void ); - vApplicationMallocFailedHook(); - } - } - #endif - - return pvReturn; -} -/*-----------------------------------------------------------*/ - -void vPortFree( void *pv ) -{ -unsigned char *puc = ( unsigned char * ) pv; -xBlockLink *pxLink; - - if( pv ) - { - /* The memory being freed will have an xBlockLink structure immediately - before it. */ - puc -= heapSTRUCT_SIZE; - - /* This casting is to keep the compiler from issuing warnings. */ - pxLink = ( void * ) puc; - - vTaskSuspendAll(); - { - /* Add this block to the list of free blocks. */ - prvInsertBlockIntoFreeList( ( ( xBlockLink * ) pxLink ) ); - xFreeBytesRemaining += pxLink->xBlockSize; - } - xTaskResumeAll(); - } -} -/*-----------------------------------------------------------*/ - -size_t xPortGetFreeHeapSize( void ) -{ - return xFreeBytesRemaining; -} -/*-----------------------------------------------------------*/ - -void vPortInitialiseBlocks( void ) -{ - /* This just exists to keep the linker quiet. */ -} -- cgit v1.2.3