131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/*!
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*******************************************************************************
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**
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** \file rtos_memory.h
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**
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** \version 1.0
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**
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** \date March 20, 2003
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**
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** \author Wolfgang Larisch
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**
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** \brief A generic OS adaptation layer library
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**
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** This header file defines RTOS internal functions which are implemented
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** either in the uC/OS or the Nucleus port (maybe others OSes will follow in
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** the future).
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**
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** \attention THIS SAMPLE CODE IS PROVIDED AS IS. GOKE MICROELECTRONICS
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** ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR
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** OMMISSIONS.
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**
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** (C) Copyright 2002 - 2007 by Goke Microelectronics China
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**
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*******************************************************************************
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*/
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#ifndef RTOS_MEMORY_H
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#define RTOS_MEMORY_H
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#include "gtypes.h"
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#include "rtos_lib.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*!
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*******************************************************************************
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**
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** \brief Allocate a bunch of memory from the system heap
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**
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** This function allocates the given size of memory from the available
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** OS controlled SDRAM heap space.
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**
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** \param size size of memory in bytes to allocate.
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** \param shared a boolean value which decides whether to allocate a
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** memory block as shared (GTRUE) or as private (GFALSE)
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** memory. Private memory can only be de-allocated by
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** the thread that has allocated the memory, shared
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** memory can be de-allocated by any thread.
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**
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** \return memory a pointer to the start address of the allocated memory
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** block, or \b NULL if the required size of memory was not
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** available.
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**
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** \sa rtos_types
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**
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*******************************************************************************
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*/
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RTOS_Memory RTOS_SysMemoryAllocate( RTOS_Size size, RTOS_Flag shared );
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/*!
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*******************************************************************************
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**
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** \brief Release (de-allocate) a bunch of system heap memory
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**
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** This function de-allocates a previoulsy allocated bunch of memory.
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**
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** \param memory a pointer to the start of the memory block to release.
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**
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** \return status the result status, either \b RTOS_OK,
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** \b RTOS_MEMORY_FAILURE if the given memory pointer does not
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** point to dynamic allocated memory or \b RTOS_THREAD_FAILURE
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** if the allocated memory space is owned by a different
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** thread.
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**
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** \sa rtos_types
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** \sa rtos_status
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**
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*******************************************************************************
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*/
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RTOS_Status RTOS_SysMemoryRelease( RTOS_Memory memory );
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/*
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*******************************************************************************
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**
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** This function allocates the given size of memory from the available
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** OS controlled user heap.
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** For better performace, we control all the available OS handled RAM by
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** segments of a min. size of RTOS_HeapMinAllocSize bytes.
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**
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*******************************************************************************
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*/
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RTOS_Memory RTOS_MemoryAllocate( RTOS_Size bytes, RTOS_Flag shared );
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RTOS_Memory RTOS_Malloc( RTOS_Size bytes);
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RTOS_Memory RTOS_Realloc( RTOS_Memory addr, RTOS_Size bytes );
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/*
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*******************************************************************************
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**
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** This function de-allocates a previoulsy allocated bunch of memory
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** within the user heap.
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**
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*******************************************************************************
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*/
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RTOS_Status RTOS_MemoryRelease( RTOS_Memory memory );
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/*
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*******************************************************************************
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**
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** This function sets the given amount of bytes in the given source address
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** the the specified byte value.
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**
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*******************************************************************************
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*/
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RTOS_Memory RTOS_MemorySet( RTOS_Memory mem, U8 value, RTOS_Size bytes );
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#ifdef __cplusplus
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}
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#endif
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/*
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*******************************************************************************
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**
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** end
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**
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*******************************************************************************
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*/
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#endif /* RTOS_MEMORY_H */
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