source: svn/trunk/zas_dstar/hal/common/dsthalMemChain.c @ 2

/******************************************************************************
 *_Copyright (c) 2009 Digital Stream Technology Inc. All Rights Reserved.
 *
 * Module: memchain.c
 *
 * Description
 *      Utility for associating allocated memory
 *
 ******************************************************************************/

#include "dsthalcommon.h"
#include "dsthalPsiMemChain.h"

#include <stdlib.h>
#include <string.h>

#ifdef DMALLOC
#include <dmalloc.h>
#endif


#define MAX_FUNC_NAME 32 // Çã¿ëÇÒ ÃÖ´ë ÇÔ¼ö À̸§ ±æÀÌ
#define MAX_COUNT 5000 // °ü¸®ÇÒ °¹¼ö

static struct MEM_LIST 
{
        char func[MAX_FUNC_NAME+1];
        int nLine;
        void *p;
        int nSize;
        unsigned int tick;
} memlist[MAX_COUNT];

void Print_MemChain_MemUnit(void)
{
        int i = 0, nSum = 0, nCount = 0;
        printf("|------------+----------+----------------------------------+------|\n");
        printf("|   Address  |    Size  |             Function             | Line |\n");
        printf("|------------+----------+----------------------------------+------|\n");
        for (i = 0; i < MAX_COUNT; i++)
        {
                if (memlist[i].p == 0) continue;
                printf("| 0x%08X | %8d | %32s | %4d | %4ld |\n", (int)memlist[i].p, memlist[i].nSize, memlist[i].func, memlist[i].nLine, (OS_GetTickCount() - memlist[i].tick)/100 );
                nSum+=memlist[i].nSize;
                nCount++;
        }
        printf("|------------+----------+----------------------------------+------|\n");
        printf("| %10d | %8d |                                         |\n", nCount, nSum);
        printf("|------------+----------+----------------------------------+------|\n");
} 

static void Add_MemUint(char* func, int nLine, void *p, int nSize)
{
        int i = 0;
        for (i = 0; i < MAX_COUNT; i++)
        {
                if (memlist[i].p != 0) continue;
                if (strlen(func) > MAX_FUNC_NAME) 
                {
                        memcpy(memlist[i].func, func, MAX_FUNC_NAME);
                        memlist[i].func[MAX_FUNC_NAME] = 0;
                }
                else
                {
                        strcpy(memlist[i].func, func);
                }
                memlist[i].nLine = nLine;
                memlist[i].p = p;
                memlist[i].nSize = nSize;
                memlist[i].tick = OS_GetTickCount();
                break;
        }
        //Print_MemUnit();
}


static void Del_MemUnit(void *p, const char * func, int nLine)
{
        int i = 0;
        if (p == 0) return;
        for (i = 0; i < MAX_COUNT; i++)
        {
                if (memlist[i].p != p) continue;
                memlist[i].p = 0;
                break;
        }
        if (i >= MAX_COUNT)
        {
#if 0
                printf("\n\n\n\nTry to delete unallocated memory 0x%08X. %s %d\n\n\n", (int)p, func, nLine);
                Print_All_MemUnit();
                OS_Delay(5);
#endif
        }
        //Print_MemUnit();
}


static int nCount = 0;
int print_memchain_malloc()
{
        return nCount;
}
static void *memchain_malloc(unsigned int size, char* func, int nLine)
{
        void *p = 0;
        nCount++;
        p = OS_malloc2(size);
        Add_MemUint(func, nLine, p, size);
        
//      printf("nCount = %d adde = %08X\n", nCount, p);
        return p;
}

static void memchain_free(void *p, const char *func, int nLine)
{
        nCount--;
//      printf("nCount = %d adde = %08X\n", nCount, p);
        Del_MemUnit(p, func, nLine);
        OS_free2(p);
}
/******************************************************************************
 * Global variable declaration
 ******************************************************************************/


/******************************************************************************
 * Imported variable declaration
 ******************************************************************************/


/******************************************************************************
 * Imported function declaration
 ******************************************************************************/


/******************************************************************************
 * Local definitions 
 ******************************************************************************/
#define MEMCHAIN_MAGIC          0x45CBA9D1

/******************************************************************************
 * Local typedefs
 ******************************************************************************/
typedef struct memElement {
        void*                   userData;
        struct memElement       *next;
} memElement_t, *memElementPtr_t;

typedef struct memChainHead {
        DS_U32          magic;
        DS_U32          memLimit;
        myMalloc_f      Malloc;
        myFree_f        Free;
        DS_U32          totalElements;
        DS_U32          totalBytes;
        DS_U32          totalUserBytes;
        memElementPtr_t element;
} memChainHead_t, *memChainHeadPtr_t;

/******************************************************************************
 * Local variables declaration
 ******************************************************************************/


/******************************************************************************
 * Local function prototypes
 ******************************************************************************/
 
/*=========================================================================
ErrCode memChainCreate (memId_t *memId, memChainSetupPtr_t setupPtr)

        *memId:         memId of the newly created memChain.
        setupPtr:               Pointer to the memChain setup information.

Creates a memChain object which links related memory into a 'chain'.  All
memory associated with this chain can then be easily freed.
=========================================================================*/
DHL_RESULT _memChainCreate (memId_t *memId, memChainSetupPtr_t setupPtr, const char *func, int nLine)
{
        myMalloc_f                      Malloc;
        memChainHeadPtr_t               memChainHeadPtr;
        DHL_RESULT                      err = DHL_OK;

        if ((memId == NULL) || setupPtr == NULL) {
                err = DHL_FAIL_INVALID_PARAM;
                goto memChainCreateEnd;
        }

        if (setupPtr->Malloc == NULL) {
                Malloc = (myMalloc_f)memchain_malloc;
        }
        else {
                Malloc = (myMalloc_f)(setupPtr->Malloc);
        }
        memChainHeadPtr = (memChainHeadPtr_t)Malloc(sizeof(memChainHead_t), func, nLine);
        if (memChainHeadPtr == NULL) {
                err = DHL_FAIL_OUT_OF_RESOURCE;
                goto memChainCreateEnd;
        }
        memset(memChainHeadPtr,0x00,sizeof(memChainHead_t));

        /* initialize */
        memChainHeadPtr->memLimit = setupPtr->memLimit;
        memChainHeadPtr->Malloc = Malloc;
        if (setupPtr->Free == NULL) {
                memChainHeadPtr->Free = memchain_free;
        }
        else {
                memChainHeadPtr->Free = setupPtr->Free;
        }
        memChainHeadPtr->magic = MEMCHAIN_MAGIC;
        memChainHeadPtr->totalElements = 0;
        memChainHeadPtr->totalBytes = sizeof(memChainHead_t);
        memChainHeadPtr->totalUserBytes = 0;
        memChainHeadPtr->element = NULL;

        /* set instance */
        *memId = memChainHeadPtr;

memChainCreateEnd:
        return (err);
}


/*=========================================================================
DHL_RESULT memChainDestroy (memId_t memId)

        memId:          memId of the memChain.

Destroys the memChain, freeing all associated memory.
=========================================================================*/
DHL_RESULT _memChainDestroy (memId_t memId, const char *func, int nLine)
{
        memChainHeadPtr_t               memChainHeadPtr = (memChainHeadPtr_t)memId;
        memElementPtr_t         currElem, prevElem;

        memChainHeadPtr->magic = 0;

        /* free the memElements */
        currElem = memChainHeadPtr->element;
        while (currElem != NULL) {
                prevElem = currElem;
                currElem = currElem->next;
                memChainHeadPtr->Free(prevElem , func, nLine);
        }

        /* lastly, free the memChainHead */
        memChainHeadPtr->Free(memChainHeadPtr , func, nLine);

        return (DHL_OK);                
}


/*=========================================================================
void* memChainAlloc (memId_t memId, DS_U32 size)

        memId:          memId of the memChain.
        size:                   The size of the requested memory chunk.

Allocates a memory block of the requested size and associates it with the
specified memChain.  Returns NULL if the OS_Calloc() fails or if memLimit
will be exceeded.
=========================================================================*/
void* _memChainAlloc (memId_t memId, DS_U32 size, const char *func, int nLine)
{
        memChainHeadPtr_t               memChainHeadPtr = (memChainHeadPtr_t)memId;
        memElementPtr_t         memElementPtr;
        DS_U32                  allocSize;
        void                            *rptr, *p;

        /* check the memLimit (memLimit = 0 means no limit) */
        if (memChainHeadPtr->memLimit > 0) {
                if (memChainHeadPtr->totalUserBytes + size > memChainHeadPtr->memLimit) {
                    if ( memChainHeadPtr->memLimit > 0x10000 )
                    {
                        printf("%s:%d->| memLimit exceeded.  memId=0x%08lX, totalUserBytes=%ld (+%ld), memLimit = %ld\n", func, nLine, (DS_U32)memId, memChainHeadPtr->totalUserBytes, size, memChainHeadPtr->memLimit);
                        Print_MemChain_MemUnit();
                        rptr = NULL;
                        goto memChainAllocEnd;
                }
                else
            {
                memChainHeadPtr->memLimit *= 2;
            }
                }
        }

        /* allocate the memory - add 8 bytes to guarantee 64-bit alignment of user data */
        allocSize = sizeof(memElement_t) + size + 8;

        memElementPtr = (memElementPtr_t)memChainHeadPtr->Malloc(allocSize,func,nLine);
        if (memElementPtr == NULL) {
                rptr = NULL;
                goto memChainAllocEnd;
        }
        memset(memElementPtr,0x00,allocSize);

        p = (void *)(((DS_U8 *)(memElementPtr) + sizeof(memElement_t)));

        /* align on 64-bit boundary */
        memElementPtr->userData = (void *)((DS_U32)(((DS_U8 *)p)+8) & ((~0) << 3));
        rptr = memElementPtr->userData;

        /* insert element in list */
        memElementPtr->next = memChainHeadPtr->element;
        memChainHeadPtr->element = memElementPtr;

        /* update tracking statistics */
        memChainHeadPtr->totalElements++;
        memChainHeadPtr->totalBytes += allocSize;
        memChainHeadPtr->totalUserBytes += size;

memChainAllocEnd:
        return (rptr);
}