Golang C.DBClose类(方法)实例源码

func (r *rocksDBBatch) Commit() error {
	if r.batch == nil {
		panic("this batch was already committed")
	}

	r.distinctOpen = false
	if r.flushes > 0 {
		// We've previously flushed mutations to the C++ batch, so we have to flush
		// any remaining mutations as well and then commit the batch.
		r.flushMutations()
		if err := statusToError(C.DBCommitBatch(r.batch)); err != nil {
			return err
		}
	} else if r.builder.count > 0 {
		// Fast-path which avoids flushing mutations to the C++ batch. Instead, we
		// directly apply the mutations to the database.
		if err := r.parent.ApplyBatchRepr(r.builder.Finish()); err != nil {
			return err
		}
	}

	C.DBClose(r.batch)
	r.batch = nil

	return nil
}

func (r *rocksDBBatch) Close() {
	if i := &r.prefixIter.rocksDBIterator; i.iter != nil {
		i.destroy()
	}
	if i := &r.normalIter.rocksDBIterator; i.iter != nil {
		i.destroy()
	}
	if r.batch != nil {
		C.DBClose(r.batch)
	}
}

func (r *rocksDBBatch) Close() {
	r.distinct.close()
	if i := &r.prefixIter.iter; i.iter != nil {
		i.destroy()
	}
	if i := &r.normalIter.iter; i.iter != nil {
		i.destroy()
	}
	if r.batch != nil {
		C.DBClose(r.batch)
	}
}

// Close closes the database by deallocating the underlying handle.
func (r *RocksDB) Close() {
	if atomic.AddInt32(&r.refcount, -1) > 0 {
		return
	}
	if len(r.dir) == 0 {
		log.Infof("closing in-memory rocksdb instance")
	} else {
		log.Infof("closing rocksdb instance at %q", r.dir)
	}
	if r.rdb != nil {
		C.DBClose(r.rdb)
		r.rdb = nil
	}
}

// Close closes the database by deallocating the underlying handle.
func (r *RocksDB) Close() {
	if r.rdb == nil {
		log.Errorf("closing unopened rocksdb instance")
		return
	}
	if len(r.dir) == 0 {
		log.Infof("closing in-memory rocksdb instance")
	} else {
		log.Infof("closing rocksdb instance at %q", r.dir)
	}
	if r.rdb != nil {
		C.DBClose(r.rdb)
		r.rdb = nil
	}
	close(r.deallocated)
}

func (r *rocksDBBatch) Commit() error {
	if r.batch == nil {
		panic("this batch was already committed")
	}
	if err := statusToError(C.DBWriteBatch(r.batch)); err != nil {
		return err
	}
	C.DBClose(r.batch)
	r.batch = nil

	// On success, run the deferred functions in reverse order.
	for i := len(r.defers) - 1; i >= 0; i-- {
		r.defers[i]()
	}
	r.defers = nil

	return nil
}

func (r *rocksDBBatch) Close() {
	if r.batch != nil {
		C.DBClose(r.batch)
	}
}