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);
}