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C++ GET_ALLOC函数代码示例

本文整理汇总了C++中GET_ALLOC函数的典型用法代码示例。如果您正苦于以下问题：C++ GET_ALLOC函数的具体用法？C++ GET_ALLOC怎么用？C++ GET_ALLOC使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了GET_ALLOC函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: 

static inline void *find_fit(size_t asize)
{
  void *bp;
  for (bp = heap_listp; GET_SIZE(HDRP(bp))>0; bp = NEXT_BLKP(bp)) {
    if (!GET_ALLOC(HDRP(bp)) && (asize <= GET_SIZE(HDRP(bp))))
      return bp;
  }
  return NULL;
}
开发者ID:alexmadjar，项目名称:213malloc，代码行数:9，代码来源:mm-implicit.c

示例2: GET_ALLOC

static void *coalesce(void *bp)
{
    size_t prev_alloc = GET_ALLOC(FTRP(PREV_BLKP(bp)));
    size_t next_alloc = GET_ALLOC(HDRP(NEXT_BLKP(bp)));
    size_t size = GET_SIZE(HDRP(bp));

    if(prev_alloc && next_alloc) //101
    {
        add_free(bp);
        //return bp;
    }

    else if(prev_alloc && !next_alloc) //100
    {
        rm_free(NEXT_BLKP(bp));

        size += GET_SIZE(HDRP(NEXT_BLKP(bp)));
        PUT(HDRP(bp), PACK(size, 0));
        PUT(FTRP(bp), PACK(size, 0));

        add_free(bp);
    }

    else if(!prev_alloc && next_alloc) //001
    {
        size += GET_SIZE(HDRP(PREV_BLKP(bp)));
        PUT(FTRP(bp), PACK(size, 0));
        PUT(HDRP(PREV_BLKP(bp)), PACK(size, 0));
        bp = PREV_BLKP(bp);
    }

    else //000
    {
        rm_free(NEXT_BLKP(bp));

        size += GET_SIZE(HDRP(NEXT_BLKP(bp))) + 
                GET_SIZE(HDRP(PREV_BLKP(bp)));
        PUT(HDRP(PREV_BLKP(bp)), PACK(size, 0));
        PUT(FTRP(NEXT_BLKP(bp)), PACK(size, 0));
        bp = PREV_BLKP(bp);
    }

    return bp;
}
开发者ID:YeXiaoRain，项目名称:ICS_LAB，代码行数:44，代码来源:exp_mm（显式链表）.c

示例3: GET_ALLOC

/*
 * coalesce - Coalesce adjacent free blocks. Sort the new free block into the
 *            appropriate list.
 */
static void *coalesce(void *ptr)
{
  size_t prev_alloc = GET_ALLOC(HEAD(PREV(ptr)));
  size_t next_alloc = GET_ALLOC(HEAD(NEXT(ptr)));
  size_t size = GET_SIZE(HEAD(ptr));

  /* Return if previous and next blocks are allocated */
  if (prev_alloc && next_alloc) {
    return ptr;
  }

  /* Do not coalesce with previous block if it is tagged */
  if (GET_TAG(HEAD(PREV(ptr))))
    prev_alloc = 1;

  /* Remove old block from list */
  delete_node(ptr);

  /* Detect free blocks and merge, if possible */
  if (prev_alloc && !next_alloc) {
    delete_node(NEXT(ptr));
    size += GET_SIZE(HEAD(NEXT(ptr)));
    PUT(HEAD(ptr), PACK(size, 0));
    PUT(FOOT(ptr), PACK(size, 0));
  } else if (!prev_alloc && next_alloc) {
    delete_node(PREV(ptr));
    size += GET_SIZE(HEAD(PREV(ptr)));
    PUT(FOOT(ptr), PACK(size, 0));
    PUT(HEAD(PREV(ptr)), PACK(size, 0));
    ptr = PREV(ptr);
  } else {
    delete_node(PREV(ptr));
    delete_node(NEXT(ptr));
    size += GET_SIZE(HEAD(PREV(ptr))) + GET_SIZE(HEAD(NEXT(ptr)));
    PUT(HEAD(PREV(ptr)), PACK(size, 0));
    PUT(FOOT(NEXT(ptr)), PACK(size, 0));
    ptr = PREV(ptr);
  }

  /* Adjust segregated linked lists */
  insert_node(ptr, size);

  return ptr;
}
开发者ID:bloveless，项目名称:malloclab，代码行数:48，代码来源:mm_ref0.c

示例4: coalesce

static void* coalesce(void* bp) {
 size_t prev_alloc = GET_ALLOC(FTRP(PREV_BLKP(bp)));
 size_t next_alloc = GET_ALLOC(HDRP(NEXT_BLKP(bp)));

 size_t size = GET_SIZE(HDRP(bp));

    /* if previous and next are allocated do nothing */
    if (prev_alloc && next_alloc)

    {
    return bp;
    }


/* if next is not allocated */
 else if (prev_alloc && !next_alloc) {
    size += GET_SIZE(HDRP(NEXT_BLKP(bp)));
    PUT(HDRP(bp), PACK(size, 0));
    PUT(FTRP(bp), PACK(size ,0));
    /* this node's successor is the next node's */
    size_t oldSucc = SCRP(NEXT_BLKP(bp));
    PUT(SCRP(bp), oldSucc);

    return(bp);
 }

 else if (!prev_alloc && next_alloc) {
    size += GET_SIZE(HDRP(PREV_BLKP(bp)));
    PUT(FTRP(bp), PACK(size, 0));
    PUT(HDRP(PREV_BLKP(bp)), PACK(size, 0));

    size_t oldSucc = SCRP(PREV_BLKP(bp));
    PUT(SCRP(PREV_BLKP(bp)), oldSucc);

    return(PREV_BLKP(bp));
 }
 else {
    size += GET_SIZE(HDRP(PREV_BLKP(bp))) +
    GET_SIZE(FTRP(NEXT_BLKP(bp)));
    PUT(HDRP(PREV_BLKP(bp)), PACK(size, 0));
    PUT(FTRP(NEXT_BLKP(bp)), PACK(size, 0));
    return(PREV_BLKP(bp));
 }
}
开发者ID:hshelton，项目名称:cs4400，代码行数:44，代码来源:mm.c

示例5: GET_ALLOC

static void *coalesce(void *bp)
{
	size_t prev_alloc = GET_ALLOC(FTRP(PREV_BLKP(bp))) || (PREV_BLKP(bp) == bp);
	size_t next_alloc = GET_ALLOC(HDRP(NEXT_BLKP(bp)));
	size_t size = GET_SIZE(HDRP(bp));

	if (prev_alloc && next_alloc)
	{
		// Do nothing
	}

	else if (prev_alloc && !next_alloc)
	{
		size += GET_SIZE(HDRP(NEXT_BLKP(bp)));
		remove_block(NEXT_BLKP(bp),GET_SIZE(HDRP(NEXT_BLKP(bp))));
		PUT(HDRP(bp), PACK(size, 0));
		PUT(FTRP(bp), PACK(size,0));
	}

	else if (!prev_alloc && next_alloc)
	{
		size += GET_SIZE(HDRP(PREV_BLKP(bp)));
		bp = PREV_BLKP(bp);
		remove_block(bp,GET_SIZE(HDRP(bp)));
		PUT(HDRP(bp), PACK(size, 0));
		PUT(FTRP(bp), PACK(size, 0));

	}

	else
	{
		size += GET_SIZE(HDRP(PREV_BLKP(bp))) + GET_SIZE(HDRP(NEXT_BLKP(bp)));
		void *pbp = PREV_BLKP(bp);
		remove_block(pbp, GET_SIZE(HDRP(pbp)));
		void *nbp = NEXT_BLKP(bp);
		remove_block(nbp, GET_SIZE(HDRP(nbp)));
		bp = PREV_BLKP(bp);
		PUT(HDRP(bp), PACK(size, 0));
		PUT(FTRP(bp), PACK(size, 0));
	}

	insert_free_list(bp,size);
	return bp;
}
开发者ID:niloygupta，项目名称:malloclab，代码行数:44，代码来源:mm.c

示例6: GET_ALLOC

/*
 * coalesce - Boundary tag coalescing. Return ptr to coalesced block
 */
static void *coalesce(void *bp){

  size_t NEXT_ALLOC = GET_ALLOC(  HDRP(NEXT_BLK(bp))  );
  size_t PREV_ALLOC = GET_ALLOC(  HDRP(PREV_BLK(bp))  );
  //size_t PREV_ALLOC = GET_ALLOC(  FTRP(PREV_BLK(bp))  ) || PREV_BLK(bp) == bp;
  size_t size = GET_SIZE(HDRP(bp));
  
  /*return if the previous and next blocks are both allocated */
  if (PREV_ALLOC && NEXT_ALLOC)
  {
	return bp;
  }
  
  /*Remove old block from list*/
  delete_node(bp);
  
  if (PREV_ALLOC && !NEXT_ALLOC)
  {
	delete_node(NEXT_BLK(bp));
	size += GET_SIZE(HDRP(NEXT_BLK(bp)));
	PUT(HDRP(bp), PACK(size, 0));
	PUT(FTRP(bp), PACK(size, 0));
  }
  else if (!PREV_ALLOC && NEXT_ALLOC)
  {
	delete_node(PREV_BLK(bp));
	size += GET_SIZE(HDRP(PREV_BLK(bp)));
	PUT(FTRP(bp), PACK(size, 0));
	PUT(HDRP(PREV_BLK(bp)), PACK(size, 0));
	bp = PREV(bp);
  }
  else
  {
	delete_node(PREV_BLK(bp));
	delete_node(NEXT_BLK(bp));
	size += GET_SIZE(HDRP(PREV_BLK(bp))) + GET_SIZE(HDRP(NEXT_BLK(bp)));
	PUT(HDRP(PREV_BLK(bp)), PACK(size, 0));
	PUT(FTRP(NEXT_BLK(bp)), PACK(size, 0));
	bp = PREV_BLK(bp);
  }
  
  insert_node(bp, size);
  return bp;
}
开发者ID:peterhad313，项目名称:malloc-lab，代码行数:47，代码来源:mm.c

示例7: GET_ALLOC

static void *coalesce(void *ptr)
{
    size_t prev_alloc = GET_ALLOC(FTRP(PREV_BLKP(ptr)));
    size_t next_alloc = GET_ALLOC(HDRP(NEXT_BLKP(ptr)));
    size_t size = GET_SIZE(HDRP(ptr));

    if (prev_alloc && next_alloc) {                 /* Case 1 */
        printf("Go into case 1\n");
        add_lst(ptr);
        return ptr;
    }

    else if (prev_alloc && !next_alloc) {           /* Case 2 */
        size += GET_SIZE(HDRP(NEXT_BLKP(ptr)));
        printf("Go into case 2\n");
        remove_lst(NEXT_BLKP(ptr));
        PUT(HDRP(ptr), PACK(size, 0));
        PUT(FTRP(ptr), PACK(size,0));
        add_lst(ptr);
    }

    else if (!prev_alloc && next_alloc) {           /* Case 3 */
        printf("Go into case 3\n");
        size += GET_SIZE(HDRP(PREV_BLKP(ptr)));
        PUT(FTRP(ptr), PACK(size, 0));
        PUT(HDRP(PREV_BLKP(ptr)), PACK(size, 0));
        ptr = PREV_BLKP(ptr);
        remove_lst(ptr);
        add_lst(ptr);
    }

    else {                                          /* Case 4 */
        printf("Go into case 4\n");
        size += GET_SIZE(HDRP(PREV_BLKP(ptr))) +
        GET_SIZE(FTRP(NEXT_BLKP(ptr)));
        remove_lst(NEXT_BLKP(ptr));
        PUT(HDRP(PREV_BLKP(ptr)), PACK(size, 0));
        PUT(FTRP(NEXT_BLKP(ptr)), PACK(size, 0));
        ptr = PREV_BLKP(ptr);
        remove_lst(ptr);
        add_lst(ptr);
    }
    return ptr;
}
开发者ID:karn806，项目名称:MallocLab_H-K，代码行数:44，代码来源:mm_explict.c

示例8: printblock

static void printblock(void *bp) 
{
    size_t hsize, halloc, fsize, falloc;

    checkheap(0);
    hsize = GET_SIZE(HDRP(bp));
    halloc = GET_ALLOC(HDRP(bp));  
    fsize = GET_SIZE(FTRP(bp));
    falloc = GET_ALLOC(FTRP(bp));  

    if (hsize == 0) {
        printf("%p: EOL\n", bp);
        return;
    }

    /*  printf("%p: header: [%p:%c] footer: [%p:%c]\n", bp, 
	hsize, (halloc ? 'a' : 'f'), 
	fsize, (falloc ? 'a' : 'f')); */
}
开发者ID:illucination3782，项目名称:6-malloc，代码行数:19，代码来源:mm.c

示例9: printblock

static void printblock(void *bp) 
{
    size_t hsize, halloc, fsize, falloc;

   // checkheap(0);
    hsize = GET_SIZE(HDRP(bp));
    halloc = GET_ALLOC(HDRP(bp));  
    fsize = GET_SIZE(FTRP(bp));
    falloc = GET_ALLOC(FTRP(bp));  

    if (hsize == 0) {
		dbg_printf("%p: EOL\n", bp);
	return;
    }

     dbg_printf("%p: header: [%u:%c] footer: [%u:%c]\n", bp, 
	(uint32_t)	hsize, (halloc ? 'a' : 'f'), 
	(uint32_t)fsize, (falloc ? 'a' : 'f')); 
}
开发者ID:hailunz，项目名称:Computer_System_labs，代码行数:19，代码来源:mm-segok.c

示例10: GET_ALLOC

/* $begin coalesce */
static void *coalesce(void *bp) //bp point to header
{
	void *prev_block=prev_blkp(bp);
	void *next_block=next_blkp(bp);

    uint32_t prev_alloc = GET_ALLOC(prev_block);
    uint32_t next_alloc = GET_ALLOC(next_block);
    uint32_t size = GET_SIZE(bp);

    if (prev_alloc && next_alloc) {            /* Case 1 */
		return bp;
    }

    else if (prev_alloc && !next_alloc) {      /* Case 2 */
	size += GET_SIZE(next_block);
	delete_free_block(next_block);
	PUT(bp, PACK(size, 0));
	PUT(FTRP1(bp), PACK(size,0));
    }

    else if (!prev_alloc && next_alloc) {      /* Case 3 */
	size += GET_SIZE(prev_block);
	delete_free_block(prev_block);
	PUT(FTRP1(bp), PACK(size, 0));
	PUT(prev_block, PACK(size, 0));
	bp = prev_block;
    }

    else {                                     /* Case 4 */
	size += GET_SIZE(prev_block) + 
	    GET_SIZE(next_block);
	delete_free_block(prev_block);
	delete_free_block(next_block);

	PUT(prev_block, PACK(size, 0));
	PUT(FTRP1(next_block), PACK(size, 0));
	bp = prev_block;
    }

	add_free_block(bp);
	return bp;
	
}
开发者ID:hailunz，项目名称:Computer_System_labs，代码行数:44，代码来源:mm4.c

示例11: printblock

static void printblock(void *bp) 
{
  size_t hsize, halloc, fsize, falloc;

  hsize = GET_SIZE(HDRP(bp));
  halloc = GET_ALLOC(HDRP(bp));  
  fsize = GET_SIZE(FTRP(bp));
  falloc = GET_ALLOC(FTRP(bp));  
    
  if (hsize == 0) {
    printf("%p: EOL\n", bp);
    return;
  }

  printf("%p: header: [%d:%c] footer: [%d:%c]\n",
	 bp, 
	 (int) hsize, (halloc ? 'a' : 'f'), 
	 (int) fsize, (falloc ? 'a' : 'f')); 
}
开发者ID:CSUChico-CSCI540，项目名称:CSCI540-MallocLab，代码行数:19，代码来源:mm.c

示例12: coalesce

static void* coalesce(void *bp) //bp point to header
{
	//dbg_printf("coalesce %p\n",bp);
	void *prev_blk=PREV_BLKP(bp);
	void *next_blk=NEXT_BLKP(bp);
	size_t prev_alloc = GET_ALLOC(FTRP(prev_blk));
    size_t next_alloc = GET_ALLOC(HDRP(next_blk));
    size_t size = GET_SIZE(HDRP(bp));
	
    if (prev_alloc && next_alloc) {            /* Case 1 */
		add_free_block(bp);
		return bp;
    }

    else if (prev_alloc && !next_alloc) {      /* Case 2 */
		size += GET_SIZE(HDRP(next_blk));
		delete_free_block(next_blk);
		PUT(HDRP(bp), PACK(size, 0));
		PUT(FTRP(bp), PACK(size,0));
    }

    else if (!prev_alloc && next_alloc) {      /* Case 3 */
		size += GET_SIZE(HDRP(prev_blk));
		delete_free_block(prev_blk);
		PUT(FTRP(bp), PACK(size, 0));
		PUT(HDRP(prev_blk), PACK(size, 0));
		bp = prev_blk;
    }

    else {                                     /* Case 4 */
		size += GET_SIZE(HDRP(prev_blk)) + 
	    GET_SIZE(FTRP(next_blk));
		delete_free_block(prev_blk);
		delete_free_block(next_blk);
		PUT(HDRP(prev_blk), PACK(size, 0));
		PUT(FTRP(next_blk), PACK(size, 0));
		bp = prev_blk;
   }

	add_free_block(bp);
    return bp;
	
}
开发者ID:hailunz，项目名称:Computer_System_labs，代码行数:43，代码来源:mm-efree.c

示例13: while

static void *find_fit(size_t size) {
  char *bp = heap_listp;
  while (GET_SIZE(HDRP(bp))) {
    if (!GET_ALLOC(HDRP(bp)) && GET_SIZE(HDRP(bp)) >= size) {
      return bp;
    }
    bp = NEXT_BLKP(bp);
  }
  return NULL;
}
开发者ID:gigi13164269，项目名称:blog-1，代码行数:10，代码来源:mm.c

示例14: find_fit

void* find_fit(size_t size){

    void* temp = heap_ptr;
    while(*NEXT_BLKP(temp) > 0){    //Keep on going while not footer block
        if(GET_ALLOC(temp) && (GET_SIZE(temp) > size))
            return temp;
        temp = NEXT_BLKP(temp);
    }
    return NULL; //Didn't find a block so returning NULL
}
开发者ID:jboullianne，项目名称:csc252，代码行数:10，代码来源:mm.c

示例15: GET_ALLOC

void *coalesce(void *bp){

    size_t prev_alloc = GET_ALLOC(FTRP(PREV_BLKP(bp)));
    size_t next_alloc = GET_ALLOC(HDRP(NEXT_BLKP(bp)));
    size_t size = GET_SIZE(HDRP(bp));

    if (prev_alloc && next_alloc) {
    	add_freelist(bp);      /* Case:1 Both previous block and next block are allocated*/
        return bp;
    }
    else if (!prev_alloc && next_alloc) {
   	void *prev = PREV_BLKP(bp);   /* Case:2  Previous is free and next block is allocated*/
        delete_freelist(prev);
        size += GET_SIZE(HDRP(PREV_BLKP(bp)));
        PUT(FTRP(bp), PACK(size, 0));
        PUT(HDRP(PREV_BLKP(bp)), PACK(size, 0));
    	add_freelist(PREV_BLKP(bp));
        
	return (PREV_BLKP(bp));
    }
    else if (prev_alloc && !next_alloc) {
  	void *next = NEXT_BLKP(bp);        /* Case:3 Previous is allocated and next block is free  */
        delete_freelist(next);
        size += GET_SIZE(HDRP(NEXT_BLKP(bp)));
        PUT(HDRP(bp), PACK(size, 0));
        PUT(FTRP(bp), PACK(size, 0));
   	add_freelist(bp);
       
	return (bp);
    }
    else {           
    	void *prev = PREV_BLKP(bp); /* Case:4 Both previous and next block are free*/
        void *next = NEXT_BLKP(bp);
        delete_freelist(prev);
        delete_freelist(next);
        size += GET_SIZE(HDRP(PREV_BLKP(bp)))  + GET_SIZE(FTRP(NEXT_BLKP(bp)))  ;
        PUT(HDRP(PREV_BLKP(bp)), PACK(size,0));
        PUT(FTRP(NEXT_BLKP(bp)), PACK(size,0));
	add_freelist(PREV_BLKP(bp));

        return (PREV_BLKP(bp));
    }
}
开发者ID:Frequently，项目名称:Malloc，代码行数:43，代码来源:malloc.c


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