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leveldb: use writebatch for chunk saving (faster I/O)

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i don't know why this wasn't already using a writebatch, but it should have been.
This commit is contained in:
Dylan K. Taylor 2019-03-15 15:27:33 +00:00
parent 9205bbaa42
commit 7d72b8e756
1 changed files with 19 additions and 14 deletions
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33
src/pocketmine/level/format/io/leveldb/LevelDB.php
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@ -356,13 +356,15 @@ class LevelDB extends BaseLevelProvider implements WritableLevelProvider{
$idMap = array_flip(json_decode(file_get_contents(\pocketmine\RESOURCE_PATH . '/legacy_id_map.json'), true));
}
$index = LevelDB::chunkIndex($chunk->getX(), $chunk->getZ());
$this->db->put($index . self::TAG_VERSION, chr(self::CURRENT_LEVEL_CHUNK_VERSION));
$write = new \LevelDBWriteBatch();
$write->put($index . self::TAG_VERSION, chr(self::CURRENT_LEVEL_CHUNK_VERSION));
$subChunks = $chunk->getSubChunks();
foreach($subChunks as $y => $subChunk){
$key = $index . self::TAG_SUBCHUNK_PREFIX . chr($y);
if($subChunk->isEmpty(false)){ //MCPE doesn't save light anymore as of 1.1
$this->db->delete($key);
$write->delete($key);
}else{
$subStream = new BinaryStream();
$subStream->putByte(self::CURRENT_LEVEL_SUBCHUNK_VERSION);
@ -387,32 +389,35 @@ class LevelDB extends BaseLevelProvider implements WritableLevelProvider{
$subStream->put((new LittleEndianNbtSerializer())->writeMultiple($tags));
}
$this->db->put($key, $subStream->getBuffer());
$write->put($key, $subStream->getBuffer());
}
}
$this->db->put($index . self::TAG_DATA_2D, str_repeat("\x00", 512) . $chunk->getBiomeIdArray());
$write->put($index . self::TAG_DATA_2D, str_repeat("\x00", 512) . $chunk->getBiomeIdArray());
//TODO: use this properly
$this->db->put($index . self::TAG_STATE_FINALISATION, chr(self::FINALISATION_DONE));
$write->put($index . self::TAG_STATE_FINALISATION, chr(self::FINALISATION_DONE));
$this->writeTags($chunk->getNBTtiles(), $index . self::TAG_BLOCK_ENTITY);
$this->writeTags($chunk->getNBTentities(), $index . self::TAG_ENTITY);
$this->writeTags($chunk->getNBTtiles(), $index . self::TAG_BLOCK_ENTITY, $write);
$this->writeTags($chunk->getNBTentities(), $index . self::TAG_ENTITY, $write);
$this->db->delete($index . self::TAG_DATA_2D_LEGACY);
$this->db->delete($index . self::TAG_LEGACY_TERRAIN);
$write->delete($index . self::TAG_DATA_2D_LEGACY);
$write->delete($index . self::TAG_LEGACY_TERRAIN);
$this->db->write($write);
}
/**
* @param CompoundTag[] $targets
* @param string $index
* @param CompoundTag[] $targets
* @param string $index
* @param \LevelDBWriteBatch $write
*/
private function writeTags(array $targets, string $index) : void{
private function writeTags(array $targets, string $index, \LevelDBWriteBatch $write) : void{
if(!empty($targets)){
$nbt = new LittleEndianNbtSerializer();
$this->db->put($index, $nbt->writeMultiple($targets));
$write->put($index, $nbt->writeMultiple($targets));
}else{
$this->db->delete($index);
$write->delete($index);
}
}