--- /dev/null
+package net.jpountz.xxhash;
+
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+final class StreamingXXHash32JNI extends StreamingXXHash32 {
+
+ static class Factory implements StreamingXXHash32.Factory {
+
+ public static final StreamingXXHash32.Factory INSTANCE = new Factory();
+
+ @Override
+ public StreamingXXHash32 newStreamingHash(int seed) {
+ return new StreamingXXHash32JNI(seed);
+ }
+
+ }
+
+ private long state;
+
+ StreamingXXHash32JNI(int seed) {
+ super(seed);
+ state = XXHashJNI.XXH32_init(seed);
+ }
+
+ private void checkState() {
+ if (state == 0) {
+ throw new AssertionError("Already finalized");
+ }
+ }
+
+ @Override
+ public void reset() {
+ checkState();
+ XXHashJNI.XXH32_free(state);
+ state = XXHashJNI.XXH32_init(seed);
+ }
+
+ @Override
+ public int getValue() {
+ checkState();
+ return XXHashJNI.XXH32_digest(state);
+ }
+
+ @Override
+ public void update(byte[] bytes, int off, int len) {
+ checkState();
+ XXHashJNI.XXH32_update(state, bytes, off, len);
+ }
+
+ @Override
+ protected void finalize() throws Throwable {
+ super.finalize();
+ // free memory
+ XXHashJNI.XXH32_free(state);
+ state = 0;
+ }
+
+}