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/*
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* mem.c
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*
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* Copyright(c) 1998 - 2010 Texas Instruments. All rights reserved.
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* All rights reserved.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v1.0 or BSD License which accompanies
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* this distribution. The Eclipse Public License is available at
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* http://www.eclipse.org/legal/epl-v10.html and the BSD License is as below.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Texas Instruments nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define __FILE_ID__ FILE_ID_129
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#include "tidef.h"
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#include "osApi.h"
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#define MEM_BLOCK_START (('m'<<24) | ('e'<<16) | ('m'<<8) | 's')
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#define MEM_BLOCK_END (('m'<<24) | ('e'<<16) | ('m'<<8) | 'e')
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typedef struct
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{
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TI_HANDLE hOs;
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TI_UINT32 uMaxAllocated;
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TI_UINT32 uCurAllocated;
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} TMemMng;
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typedef struct
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{
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TI_UINT32 size;
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TI_UINT32 signature;
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} TMemBlock;
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/****************************************************************************************
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* *
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* OS Memory API *
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* *
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****************************************************************************************/
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TI_HANDLE mem_Create (TI_HANDLE hOs)
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{
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TMemMng *pMemMng = (TMemMng *)os_memoryAlloc (hOs, sizeof(TMemMng),MemoryNormal);
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if (pMemMng != NULL)
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{
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pMemMng->hOs = hOs;
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pMemMng->uCurAllocated = 0;
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pMemMng->uMaxAllocated = 0;
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}
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return (TI_HANDLE)pMemMng;
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}
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TI_STATUS mem_Destroy (TI_HANDLE hMem)
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{
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TMemMng *pMemMng = (TMemMng *)hMem;
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if (pMemMng != NULL)
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{
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os_memoryFree (pMemMng->hOs, (void *)pMemMng, sizeof(TMemMng));
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}
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return TI_OK;
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}
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/****************************************************************************************
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* os_memoryAlloc()
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****************************************************************************************
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DESCRIPTION: Allocates resident (nonpaged) system-space memory.
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ARGUMENTS: OsContext - our adapter context.
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Size - Specifies the size, in bytes, to be allocated.
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RETURN: Pointer to the allocated memory.
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NULL if there is insufficient memory available.
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NOTES: With the call to vmalloc it is assumed that this function will
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never be called in an interrupt context. vmalloc has the potential to
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sleep the caller while waiting for memory to become available.
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*****************************************************************************************/
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void* mem_Alloc (TI_HANDLE hMem, TI_UINT32 size)
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{
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TMemMng *pMemMng = (TMemMng *)hMem;
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TMemBlock *pMemBlock;
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TI_UINT32 total = size + sizeof(TMemBlock) + sizeof(TI_UINT32);
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#ifdef TI_MEM_ALLOC_TRACE
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os_printf ("mem_Alloc(0x%p, %lu) : %u\n", hMem, size, uTotalSize);
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#endif
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pMemBlock = (TMemBlock *) os_memoryAlloc (pMemMng->hOs, total,MemoryNormal);
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pMemBlock->size = size;
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pMemBlock->signature = MEM_BLOCK_START;
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*(TI_UINT32 *)((TI_UINT8 *)pMemBlock + total - sizeof(TI_UINT32)) = MEM_BLOCK_END;
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pMemMng->uCurAllocated += total;
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if (pMemMng->uMaxAllocated < pMemMng->uCurAllocated)
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{
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pMemMng->uMaxAllocated = pMemMng->uCurAllocated;
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}
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return (void*)((TI_UINT8 *)pMemBlock + sizeof(TMemBlock));
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}
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/****************************************************************************************
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* os_memoryCAlloc()
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****************************************************************************************
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DESCRIPTION: Allocates an array in memory with elements initialized to 0.
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ARGUMENTS: OsContext - our adapter context.
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Number - Number of elements
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Size - Length in bytes of each element
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RETURN: None
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NOTES:
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*****************************************************************************************/
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void* mem_Calloc (TI_HANDLE hMem, TI_UINT32 number, TI_UINT32 size)
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{
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TMemMng *pMemMng = (TMemMng *)hMem;
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void *ptr;
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TI_UINT32 total;
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total = number * size;
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#ifdef TI_MEM_ALLOC_TRACE
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os_printf ("os_memoryCAlloc(%u, %u) : %u\n", number, size, total);
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#endif
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ptr = mem_Alloc (hMem, total);
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if (ptr != NULL)
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{
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os_memorySet (pMemMng->hOs, ptr, 0, total);
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}
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return ptr;
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}
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/****************************************************************************************
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* os_memoryFree()
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****************************************************************************************
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DESCRIPTION: This function releases a block of memory previously allocated with the
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os_memoryAlloc function.
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ARGUMENTS: OsContext - our adapter context.
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pMemPtr - Pointer to the base virtual address of the allocated memory.
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This address was returned by the os_memoryAlloc function.
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Size - Specifies the size, in bytes, of the memory block to be released.
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This parameter must be identical to the Length that was passed to
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os_memoryAlloc.
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RETURN: None
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NOTES:
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*****************************************************************************************/
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void mem_Free (TI_HANDLE hMem, void* ptr, TI_UINT32 size)
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{
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TMemMng *pMemMng = (TMemMng *)hMem;
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TMemBlock *pMemBlock = (TMemBlock *)((TI_UINT8 *)ptr - sizeof(TMemBlock));
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#ifdef TI_MEM_ALLOC_TRACE
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os_printf ("os_memoryFree(%p, %u)\n", ptr, size);
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#endif
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if (pMemBlock->signature != MEM_BLOCK_START)
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{
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#ifdef TI_MEM_ALLOC_TRACE
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os_printf ("os_memoryFree: memory block signature is incorrect - 0x%x\n", pMemBlock->signature);
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#endif
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}
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else
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{
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*(TI_UINT8 *)(&pMemBlock->signature) = '~';
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if (*(TI_UINT32 *)((TI_UINT8 *)pMemBlock + pMemBlock->size + sizeof(TMemBlock)) != MEM_BLOCK_END)
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{
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#ifdef TI_MEM_ALLOC_TRACE
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os_printf ("os_memoryFree: memory block corruption, size - %u\n", pMemBlock->size);
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#endif
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}
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os_memoryFree (pMemMng->hOs, pMemBlock, pMemBlock->signature + sizeof(TMemBlock) + sizeof(TI_UINT32));
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pMemMng->uCurAllocated -= size + sizeof(TMemBlock) + sizeof(TI_UINT32);
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if ((int)pMemMng->uCurAllocated < 0)
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{
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#ifdef TI_MEM_ALLOC_TRACE
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os_printf ("os_memoryFree: memory heap allocation calculation corrupted, size=%u, current=%u\n",
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size, drv->cur_heap_bytes_allocated);
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#endif
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pMemMng->uCurAllocated = 0;
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}
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}
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}
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