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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup MallocSupport
*
* @brief This header file provides the implementation of
* _Malloc_Initialize_for_one_area().
*/
/*
* Copyright (C) 2012, 2020 embedded brains GmbH (http://www.embedded-brains.de)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _RTEMS_MALLOCINITONE_H
#define _RTEMS_MALLOCINITONE_H
#include <rtems/malloc.h>
#include <rtems/score/assert.h>
#include <rtems/score/heapimpl.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @ingroup MallocSupport
*
* @brief Initializes the separate C Program Heap with support for exactly one
* memory area.
*
* This implementation should be used by BSPs which provide exactly one memory
* area via _Memory_Get() to implement _Workspace_Malloc_initialize_separate().
*/
RTEMS_INLINE_ROUTINE Heap_Control *_Malloc_Initialize_for_one_area(
Heap_Control *heap
)
{
const Memory_Information *mem;
Memory_Area *area;
uintptr_t space_available;
mem = _Memory_Get();
_Assert( _Memory_Get_count( mem ) == 1 );
RTEMS_Malloc_Heap = heap;
area = _Memory_Get_area( mem, 0 );
space_available = _Heap_Initialize(
heap,
_Memory_Get_free_begin( area ),
_Memory_Get_free_size( area ),
CPU_HEAP_ALIGNMENT
);
if ( space_available > 0 ) {
_Memory_Consume( area, _Memory_Get_free_size( area ) );
} else {
_Internal_error( INTERNAL_ERROR_NO_MEMORY_FOR_HEAP );
}
return heap;
}
#ifdef __cplusplus
}
#endif
#endif /* _RTEMS_MALLOCINITONE_H */
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