Ejemplo n.º 1
0
mf_handle_t mf_open(const char *pathname){
	LOG(INFO, "mf_open called\n");
	assert(pathname);

	int fd = open(pathname, O_RDWR | O_CREAT, 0755);
	if (fd == -1)
		return NULL;
	long int size = fsize(pathname);
	if (size == -1)
		return NULL;
	struct _mf *mf = (struct _mf *) malloc(sizeof(struct _mf));
	mf -> fd = fd;
	mf -> size = size;
	mf -> prev_ch = NULL;
	chunk_manager_init(&mf -> cm, fd, O_RDWR | O_CREAT);

	struct sysinfo info; //I know :)
	if (sysinfo(&info) == 0) {
		int tmp;
		struct chunk *ch = NULL;
		chunk_manager_offset2chunk(&mf -> cm, 0, info.freeram / 2, &ch, &tmp, 0);
		mf -> prev_ch = ch;
	}
	return (mf_handle_t) mf;
}
int local_chunk_manager_init (struct local_chunk_manager *lcm, int fd, int mode){
       int thr;
       int index;
       for (thr = 0; thr < MAX_NUM_THREADS; thr++){
              for (index = 0; index < LOCAL_POOL_SIZE; index++){
                     lcm -> lchunk_pool[thr][index].chunk = NULL;
                     lcm -> lchunk_pool[thr][index].local_ref_cnt = 0;
              }
              lcm -> cur_lchunk_index_free[thr] = 0;
              lcm -> cur_lchunk_index_prev[thr] = 0;
       }

       return chunk_manager_init(&lcm -> cm, fd, mode);
}