static void make_meta(lua_State* L)
{
static const luaL_Reg conn_methods[] =
{
{ "__gc", conn_gc },
{ "__tostring", conn_tostring },
{ "setCharset", conn_set_charset },
{ "setReconnect", conn_set_reconnect },
{ "setConnectTimeout", conn_set_connect_timeout },
{ "setWriteTimeout", conn_set_write_timeout },
{ "setReadTimeout", conn_set_read_timeout },
{ "setProtocol", conn_set_protocol },
{ "setCompress", conn_set_compress },
{ "escape", conn_escape_string },
{ "connect", conn_connect },
{ "ping", conn_ping },
{ "close", conn_close },
{ "execute", conn_execute },
{ "commit", conn_commit },
{ "rollback", conn_rollback },
{ NULL, NULL },
};
static const luaL_Reg cursor_methods[] =
{
{ "__gc", cursor_gc },
{ "fetch", cursor_fetch },
{ "fetchAll", cursor_fetch_all },
{ "numrows", cursor_numrows },
{ NULL, NULL },
};
create_meta(L, LUAMYSQL_CONN, conn_methods);
create_meta(L, LUAMYSQL_CURSOR, cursor_methods);
}
/*
* Open an output GIF file.
*/
int
GIFmoOpen(WS_STATE_PTR ws)
{
/* Output file not opened or written to until flushed */
Gint status = 1;
initLogFlag();
assert(ws != NULL);
assert(ws->wscolour <= gdMaxColors);
if ((ws->mf.cgmo = (mf_cgmo*)umalloc(sizeof(mf_cgmo))) != NULL) {
mf_cgmo *cgmo = ws->mf.cgmo;
cgmo->ws = ws;
if (find_meta(cgmo) != 0){
msgWarn("GIFmoOpen:metafile already open\n");
} else {
create_meta(cgmo, DefaultSize, DefaultSize);
cgmo->ws = ws;
cgmo->type = MF_GIF;
unlink(ws->conn);
status = OK;
}
}
return status;
}
//Add a <key,value> pair to the cache
//If key already exists, overwrite the old value
//If maxmem capacity is exceeded, values will be removed
void cache_set(cache_t cache, _key_t key, val_t val, uint32_t val_size)
{
cache_real_obj *c = cache->cache;
//Delete the value if it's already in the cache.
meta_t old = get_key_loc(cache,key);
if (old != NULL) cache_delete(cache, key);
uint64_t available_memory = cache->cache->size - cache_space_used(cache);
printf("Trying to add a value of size %"PRIu32", with available memory %"PRIu64"\n",val_size,available_memory);
if (available_memory < val_size)
{
printf(" Increasing size.\n");
defrag(cache, 1); //This doubles the cache size (defragmenting at the same time).
}
bucket_timer_up(cache);
//Create a new meta object and pair it to a slab address, and copy the value over
meta_t next_meta = create_meta(cache,key,val_size);
next_meta->address = get_address(c->slab_manager,val_size);
//enact eviction policy if we need space
if (next_meta->address == NULL){
uint32_t val_slab_class = get_slab_class(c->slab_manager, val_size);
cache_evict(cache, val_slab_class);
next_meta->address = get_address(c->slab_manager,val_size);
if (next_meta->address == NULL){
uint32_t slab_class = get_slab_class(c->slab_manager, val_size);
printf("Couldn't add a %u-%u byte value because there are no slabs of that range, and no free slabs to be allocated\n",slab_class>>1, slab_class);
free(next_meta);
return;
}
/*
* Read metadata block from disk, possibly create it if it does not exist and
* and open flags allow
*/
static int read_meta(TEE_Result *errno, struct sql_fs_fd *fdp)
{
size_t msize = meta_size();
size_t out_size = sizeof(fdp->meta);
uint8_t *meta = NULL;
int rc = -1;
*errno = TEE_ERROR_GENERIC;
meta = malloc(msize);
if (!meta) {
*errno = TEE_ERROR_OUT_OF_MEMORY;
goto exit;
}
rc = tee_fs_rpc_lseek(OPTEE_MSG_RPC_CMD_SQL_FS, fdp->fd, 0,
TEE_FS_SEEK_SET);
if (rc < 0)
goto exit;
rc = sql_fs_read_rpc(fdp->fd, meta, msize);
if (rc < 0) {
/* Read error */
goto exit;
} else if (rc == 0) {
/* No meta data on disk yet */
if (!(fdp->flags & TEE_FS_O_CREATE))
goto exit;
rc = create_meta(errno, fdp);
} else if (rc == (int)msize) {
#ifdef CFG_ENC_FS
TEE_Result res;
res = tee_fs_decrypt_file(META_FILE, meta, msize,
(uint8_t *)&fdp->meta, &out_size,
fdp->encrypted_fek);
if (res != TEE_SUCCESS) {
*errno = res;
rc = -1;
goto exit;
}
#else
memcpy((uint8_t *)&fdp->meta,
meta + tee_fs_get_header_size(META_FILE),
out_size);
#endif
rc = 0;
} else {
/* Unexpected data length */
rc = -1;
}
exit:
free(meta);
return rc;
}
