FreeRTOS_on_mbed_v1 - Please see my note book http://mbed.org/users/ken…

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Please see my note book http://mbed.org/users/kenjiArai/notebook/freertos-on-mbed-board-with-mbed-cloud-ide--never-/

This is too old.
Below is another FreeRTOS on mbed.
http://developer.mbed.org/users/rgrover1/code/FreeRTOS/
I don't know it works well or not.
I have not evaluated it.

FreeRTOS/Source/portable/MemMang/heap_1.c@0:d4960fcea8ff, 2011-01-01 (annotated)

Committer:: kenjiArai
Date:: Sat Jan 01 11:17:45 2011 +0000
Revision:: 0:d4960fcea8ff

Who changed what in which revision?

User	Revision	Line number	New contents of line
kenjiArai	0:d4960fcea8ff	1	/*
kenjiArai	0:d4960fcea8ff	2	FreeRTOS V6.0.3 - Copyright (C) 2010 Real Time Engineers Ltd.
kenjiArai	0:d4960fcea8ff	3
kenjiArai	0:d4960fcea8ff	4	***************************************************************************
kenjiArai	0:d4960fcea8ff	5	* *
kenjiArai	0:d4960fcea8ff	6	* If you are: *
kenjiArai	0:d4960fcea8ff	7	* *
kenjiArai	0:d4960fcea8ff	8	* + New to FreeRTOS, *
kenjiArai	0:d4960fcea8ff	9	* + Wanting to learn FreeRTOS or multitasking in general quickly *
kenjiArai	0:d4960fcea8ff	10	* + Looking for basic training, *
kenjiArai	0:d4960fcea8ff	11	* + Wanting to improve your FreeRTOS skills and productivity *
kenjiArai	0:d4960fcea8ff	12	* *
kenjiArai	0:d4960fcea8ff	13	* then take a look at the FreeRTOS eBook *
kenjiArai	0:d4960fcea8ff	14	* *
kenjiArai	0:d4960fcea8ff	15	* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
kenjiArai	0:d4960fcea8ff	16	* http://www.FreeRTOS.org/Documentation *
kenjiArai	0:d4960fcea8ff	17	* *
kenjiArai	0:d4960fcea8ff	18	* A pdf reference manual is also available. Both are usually delivered *
kenjiArai	0:d4960fcea8ff	19	* to your inbox within 20 minutes to two hours when purchased between 8am *
kenjiArai	0:d4960fcea8ff	20	* and 8pm GMT (although please allow up to 24 hours in case of *
kenjiArai	0:d4960fcea8ff	21	* exceptional circumstances). Thank you for your support! *
kenjiArai	0:d4960fcea8ff	22	* *
kenjiArai	0:d4960fcea8ff	23	***************************************************************************
kenjiArai	0:d4960fcea8ff	24
kenjiArai	0:d4960fcea8ff	25	This file is part of the FreeRTOS distribution.
kenjiArai	0:d4960fcea8ff	26
kenjiArai	0:d4960fcea8ff	27	FreeRTOS is free software; you can redistribute it and/or modify it under
kenjiArai	0:d4960fcea8ff	28	the terms of the GNU General Public License (version 2) as published by the
kenjiArai	0:d4960fcea8ff	29	Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
kenjiArai	0:d4960fcea8ff	30	*NOTE* The exception to the GPL is included to allow you to distribute
kenjiArai	0:d4960fcea8ff	31	a combined work that includes FreeRTOS without being obliged to provide the
kenjiArai	0:d4960fcea8ff	32	source code for proprietary components outside of the FreeRTOS kernel.
kenjiArai	0:d4960fcea8ff	33	FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
kenjiArai	0:d4960fcea8ff	34	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
kenjiArai	0:d4960fcea8ff	35	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
kenjiArai	0:d4960fcea8ff	36	more details. You should have received a copy of the GNU General Public
kenjiArai	0:d4960fcea8ff	37	License and the FreeRTOS license exception along with FreeRTOS; if not it
kenjiArai	0:d4960fcea8ff	38	can be viewed here: http://www.freertos.org/a00114.html and also obtained
kenjiArai	0:d4960fcea8ff	39	by writing to Richard Barry, contact details for whom are available on the
kenjiArai	0:d4960fcea8ff	40	FreeRTOS WEB site.
kenjiArai	0:d4960fcea8ff	41
kenjiArai	0:d4960fcea8ff	42	1 tab == 4 spaces!
kenjiArai	0:d4960fcea8ff	43
kenjiArai	0:d4960fcea8ff	44	http://www.FreeRTOS.org - Documentation, latest information, license and
kenjiArai	0:d4960fcea8ff	45	contact details.
kenjiArai	0:d4960fcea8ff	46
kenjiArai	0:d4960fcea8ff	47	http://www.SafeRTOS.com - A version that is certified for use in safety
kenjiArai	0:d4960fcea8ff	48	critical systems.
kenjiArai	0:d4960fcea8ff	49
kenjiArai	0:d4960fcea8ff	50	http://www.OpenRTOS.com - Commercial support, development, porting,
kenjiArai	0:d4960fcea8ff	51	licensing and training services.
kenjiArai	0:d4960fcea8ff	52	*/
kenjiArai	0:d4960fcea8ff	53
kenjiArai	0:d4960fcea8ff	54
kenjiArai	0:d4960fcea8ff	55	/*
kenjiArai	0:d4960fcea8ff	56	* The simplest possible implementation of pvPortMalloc(). Note that this
kenjiArai	0:d4960fcea8ff	57	* implementation does NOT allow allocated memory to be freed again.
kenjiArai	0:d4960fcea8ff	58	*
kenjiArai	0:d4960fcea8ff	59	* See heap_2.c and heap_3.c for alternative implementations, and the memory
kenjiArai	0:d4960fcea8ff	60	* management pages of http://www.FreeRTOS.org for more information.
kenjiArai	0:d4960fcea8ff	61	*/
kenjiArai	0:d4960fcea8ff	62
kenjiArai	0:d4960fcea8ff	63	#include <stdlib.h>
kenjiArai	0:d4960fcea8ff	64
kenjiArai	0:d4960fcea8ff	65	/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
kenjiArai	0:d4960fcea8ff	66	all the API functions to use the MPU wrappers. That should only be done when
kenjiArai	0:d4960fcea8ff	67	task.h is included from an application file. */
kenjiArai	0:d4960fcea8ff	68	#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
kenjiArai	0:d4960fcea8ff	69
kenjiArai	0:d4960fcea8ff	70	#include "FreeRTOS.h"
kenjiArai	0:d4960fcea8ff	71	#include "task.h"
kenjiArai	0:d4960fcea8ff	72
kenjiArai	0:d4960fcea8ff	73	#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
kenjiArai	0:d4960fcea8ff	74
kenjiArai	0:d4960fcea8ff	75	/* Allocate the memory for the heap. The struct is used to force byte
kenjiArai	0:d4960fcea8ff	76	alignment without using any non-portable code. */
kenjiArai	0:d4960fcea8ff	77	static union xRTOS_HEAP
kenjiArai	0:d4960fcea8ff	78	{
kenjiArai	0:d4960fcea8ff	79	#if portBYTE_ALIGNMENT == 8
kenjiArai	0:d4960fcea8ff	80	volatile portDOUBLE dDummy;
kenjiArai	0:d4960fcea8ff	81	#else
kenjiArai	0:d4960fcea8ff	82	volatile unsigned long ulDummy;
kenjiArai	0:d4960fcea8ff	83	#endif
kenjiArai	0:d4960fcea8ff	84	unsigned char ucHeap[ configTOTAL_HEAP_SIZE ];
kenjiArai	0:d4960fcea8ff	85	} xHeap;
kenjiArai	0:d4960fcea8ff	86
kenjiArai	0:d4960fcea8ff	87	static size_t xNextFreeByte = ( size_t ) 0;
kenjiArai	0:d4960fcea8ff	88	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	89
kenjiArai	0:d4960fcea8ff	90	void *pvPortMalloc( size_t xWantedSize )
kenjiArai	0:d4960fcea8ff	91	{
kenjiArai	0:d4960fcea8ff	92	void *pvReturn = NULL;
kenjiArai	0:d4960fcea8ff	93
kenjiArai	0:d4960fcea8ff	94	/* Ensure that blocks are always aligned to the required number of bytes. */
kenjiArai	0:d4960fcea8ff	95	#if portBYTE_ALIGNMENT != 1
kenjiArai	0:d4960fcea8ff	96	if( xWantedSize & portBYTE_ALIGNMENT_MASK )
kenjiArai	0:d4960fcea8ff	97	{
kenjiArai	0:d4960fcea8ff	98	/* Byte alignment required. */
kenjiArai	0:d4960fcea8ff	99	xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) );
kenjiArai	0:d4960fcea8ff	100	}
kenjiArai	0:d4960fcea8ff	101	#endif
kenjiArai	0:d4960fcea8ff	102
kenjiArai	0:d4960fcea8ff	103	vTaskSuspendAll();
kenjiArai	0:d4960fcea8ff	104	{
kenjiArai	0:d4960fcea8ff	105	/* Check there is enough room left for the allocation. */
kenjiArai	0:d4960fcea8ff	106	if( ( ( xNextFreeByte + xWantedSize ) < configTOTAL_HEAP_SIZE ) &&
kenjiArai	0:d4960fcea8ff	107	( ( xNextFreeByte + xWantedSize ) > xNextFreeByte ) )/* Check for overflow. */
kenjiArai	0:d4960fcea8ff	108	{
kenjiArai	0:d4960fcea8ff	109	/* Return the next free byte then increment the index past this
kenjiArai	0:d4960fcea8ff	110	block. */
kenjiArai	0:d4960fcea8ff	111	pvReturn = &( xHeap.ucHeap[ xNextFreeByte ] );
kenjiArai	0:d4960fcea8ff	112	xNextFreeByte += xWantedSize;
kenjiArai	0:d4960fcea8ff	113	}
kenjiArai	0:d4960fcea8ff	114	}
kenjiArai	0:d4960fcea8ff	115	xTaskResumeAll();
kenjiArai	0:d4960fcea8ff	116
kenjiArai	0:d4960fcea8ff	117	#if( configUSE_MALLOC_FAILED_HOOK == 1 )
kenjiArai	0:d4960fcea8ff	118	{
kenjiArai	0:d4960fcea8ff	119	if( pvReturn == NULL )
kenjiArai	0:d4960fcea8ff	120	{
kenjiArai	0:d4960fcea8ff	121	extern void vApplicationMallocFailedHook( void );
kenjiArai	0:d4960fcea8ff	122	vApplicationMallocFailedHook();
kenjiArai	0:d4960fcea8ff	123	}
kenjiArai	0:d4960fcea8ff	124	}
kenjiArai	0:d4960fcea8ff	125	#endif
kenjiArai	0:d4960fcea8ff	126
kenjiArai	0:d4960fcea8ff	127	return pvReturn;
kenjiArai	0:d4960fcea8ff	128	}
kenjiArai	0:d4960fcea8ff	129	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	130
kenjiArai	0:d4960fcea8ff	131	void vPortFree( void *pv )
kenjiArai	0:d4960fcea8ff	132	{
kenjiArai	0:d4960fcea8ff	133	/* Memory cannot be freed using this scheme. See heap_2.c and heap_3.c
kenjiArai	0:d4960fcea8ff	134	for alternative implementations, and the memory management pages of
kenjiArai	0:d4960fcea8ff	135	http://www.FreeRTOS.org for more information. */
kenjiArai	0:d4960fcea8ff	136	( void ) pv;
kenjiArai	0:d4960fcea8ff	137	}
kenjiArai	0:d4960fcea8ff	138	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	139
kenjiArai	0:d4960fcea8ff	140	void vPortInitialiseBlocks( void )
kenjiArai	0:d4960fcea8ff	141	{
kenjiArai	0:d4960fcea8ff	142	/* Only required when static memory is not cleared. */
kenjiArai	0:d4960fcea8ff	143	xNextFreeByte = ( size_t ) 0;
kenjiArai	0:d4960fcea8ff	144	}
kenjiArai	0:d4960fcea8ff	145	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	146
kenjiArai	0:d4960fcea8ff	147	size_t xPortGetFreeHeapSize( void )
kenjiArai	0:d4960fcea8ff	148	{
kenjiArai	0:d4960fcea8ff	149	return ( configTOTAL_HEAP_SIZE - xNextFreeByte );
kenjiArai	0:d4960fcea8ff	150	}
kenjiArai	0:d4960fcea8ff	151
kenjiArai	0:d4960fcea8ff	152
kenjiArai	0:d4960fcea8ff	153

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Type:	Program
Created:	01 Jan 2011
Imports:	289
Forks:	1
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	14

FreeRTOS/Source/portable/MemMang/heap_1.c@0:d4960fcea8ff, 2011-01-01 (annotated)

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