Squashed 'src/rocksdb/' content from commit 78b8a7d

git-subtree-dir: src/rocksdb
git-subtree-split: 78b8a7d908d7e67cc6664398e39560b76c965773

java/org/rocksdb/Statistics.java

@@ -0,0 +1,38 @@
+// Copyright (c) 2014, Facebook, Inc.  All rights reserved.
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree. An additional grant
+// of patent rights can be found in the PATENTS file in the same directory.
+
+package org.rocksdb;
+
+/**
+ * Statistics to analyze the performance of a db. Pointer for statistics object
+ * is managed by Options class.
+ */
+public class Statistics {
+
+  private final long statsHandle_;
+
+  public Statistics(long statsHandle) {
+    statsHandle_ = statsHandle;
+  }
+
+  public long getTickerCount(TickerType tickerType) {
+    assert(isInitialized());
+    return getTickerCount0(tickerType.getValue(), statsHandle_);
+  }
+
+  public HistogramData geHistogramData(HistogramType histogramType) {
+    assert(isInitialized());
+    HistogramData hist = geHistogramData0(
+        histogramType.getValue(), statsHandle_);
+    return hist;
+  }
+
+  private boolean isInitialized() {
+    return (statsHandle_ != 0);
+  }
+
+  private native long getTickerCount0(int tickerType, long handle);
+  private native HistogramData geHistogramData0(int histogramType, long handle);
+}