struct env *env_open(const char *home, uint32_t flags) {
LOG;
struct env *e;
e = xcalloc(1, sizeof(*e));
e->flags = flags;
/* tree */
e->inner_node_fanout = 16;
e->inner_default_node_size = 4 << 20; /* 4MB */
e->leaf_default_node_size = 4 << 20; /* 4MB */
e->leaf_default_basement_size = 128 << 10; /* 128KB */
/* cache */
e->cache_limits_bytes = 1024 << 20;
e->cache_high_watermark = 80; /* 80% */
e->cache_flush_period_ms = 100; /* 0.1s */
e->cache_checkpoint_period_ms = 600000; /* 60s */
/* IO */
e->use_directio = 1;
e->redo_path = "./dbbench";
e->enable_redo_log = 1;
if (!home)
home = ".";
e->dir = xcalloc(1, strlen(home) + 1);
xmemcpy(e->dir, (void*)home, strlen(home));
ness_check_dir(e->dir);
/* compress */
e->compress_method = NESS_SNAPPY_METHOD;
/* callback */
e->bt_compare_func = bt_compare_func_builtin;
/* internal */
e->cache = cache_new(e);
/* e->cache->cf_first->hdr->blocksize */
nassert(e->cache);
e->txnmgr = txnmgr_new();
nassert(e->txnmgr);
e->status = status_new();
nassert(e->status);
return e;
}
struct logw *logw_open(struct options *opts, uint64_t logsn) {
int flag;
mode_t mode;
struct logw *lgw;
char name[FILE_NAME_MAXLEN];
mode = S_IRWXU | S_IRWXG | S_IRWXO;
flag = O_CREAT | O_WRONLY | O_BINARY;
ness_check_dir(opts->redo_path);
memset(name, 0, FILE_NAME_MAXLEN);
snprintf(name, FILE_NAME_MAXLEN, "%s/ness.redo.%" PRIu64,
opts->redo_path, logsn);
lgw = xcalloc(1, sizeof(*lgw));
lgw->base_size = (1 << 20);
lgw->base = xcalloc(lgw->base_size, sizeof(char*));
lgw->fd = ness_os_open(name, flag, mode);
nassert(lgw->fd > -1);
return lgw;
}
