heap_3.c

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/*
 * FreeRTOS Kernel V10.0.0
 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software. If you wish to use our Amazon
 * FreeRTOS name, please do so in a fair use way that does not cause confusion.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * http://www.FreeRTOS.org
 * http://aws.amazon.com/freertos
 *
 * 1 tab == 4 spaces!
 */


/*
 * Implementation of pvPortMalloc() and vPortFree() that relies on the
 * compilers own malloc() and free() implementations.
 *
 * This file can only be used if the linker is configured to to generate
 * a heap memory area.
 *
 * See heap_1.c, heap_2.c and heap_4.c for alternative implementations, and the
 * memory management pages of http://www.FreeRTOS.org for more information.
 */

#if 0

#include <stdlib.h>

/* 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

#if( configSUPPORT_DYNAMIC_ALLOCATION == 0 )
        #error This file must not be used if configSUPPORT_DYNAMIC_ALLOCATION is 0
#endif

/*-----------------------------------------------------------*/

extern void vApplicationMallocFailedHook( void );
void *pvPortMalloc( size_t xWantedSize )
{
void *pvReturn;

        vTaskSuspendAll();
        {
                pvReturn = malloc( xWantedSize );
                traceMALLOC( pvReturn, xWantedSize );
        }
        ( void ) xTaskResumeAll();

        #if( configUSE_MALLOC_FAILED_HOOK == 1 )
        {
                if( pvReturn == NULL )
                {
                        vApplicationMallocFailedHook();
                }
        }
        #endif

        return pvReturn;
}
/*-----------------------------------------------------------*/

void vPortFree( void *pv )
{
        if( pv )
        {
                vTaskSuspendAll();
                {
                        free( pv );
                        traceFREE( pv, 0 );
                }
                ( void ) xTaskResumeAll();
        }
}

#endif