Initializing a pointer of a structure within a structure

Hi I'm trying to intialize a struct for my cache simulator.

The problem is one of the elements I need to initialize is another structure called cache_line which is a linked list and I wanna initialize the pointers to head and last.

I thought it would do it like

Code:

cache wk_cache = {
	my_cache.LRU_head = (Pcache_line*)malloc(sizeof(Pcache_line)*my_cache.n_sets); 
        my_cache.LRU_tail = my_cache.LRU_head;
	};

Does that look right to anyone? Or am I way off...I haven't used a struct within a struct in awhile

It's too hard to say without seeing your structures. Is 'n_sets' a pointer? Also, I don't think it's going to let you call a function as an initializer there.
You'll need to split that up to something like:

Code:

cache wk_cache;
wk_cache.LRU_head = malloc( my_cache.nsets * sizeof * my_cache.LRU_head );
wk_cache.LRU_tail = my_cache.LRU_head;

Quzah.

Here are my structs:

Code:

typedef struct cache_ {
  int size;			/* cache size */
  int associativity;		/* cache associativity */
  int n_sets;			/* number of cache sets */
  unsigned index_mask;		/* mask to find cache index */
  int index_mask_offset;	/* number of zero bits in mask */
  Pcache_line *LRU_head;	/* head of LRU list for each set */
  Pcache_line *LRU_tail;	/* tail of LRU list for each set */
  int *set_contents;		/* number of valid entries in set */
  int contents;			/* number of valid entries in cache */
} cache, *Pcache;

typedef struct cache_stat_ {
  int accesses;			/* number of memory references */
  int misses;			/* number of cache misses */
  int replacements;		/* number of misses that cause replacments */
  int demand_fetches;		/* number of fetches */
  int copies_back;		/* number of write backs */
} cache_stat, *Pcache_stat;

Obviously I omitted some stuff for ease of reading...