File: histogram_manager.cc

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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/cronet/android/histogram_manager.h"

#include <string>
#include <vector>

#include "base/android/jni_array.h"
#include "components/metrics/histogram_manager.h"

#include "jni/HistogramManager_jni.h"

namespace cronet {

// Explicitly register static JNI functions.
bool HistogramManagerRegisterJni(JNIEnv* env) {
  return RegisterNativesImpl(env);
}

static jbyteArray GetHistogramDeltas(JNIEnv* env, jobject jcaller) {
  std::vector<uint8> data;
  if (!metrics::HistogramManager::GetInstance()->GetDeltas(&data))
    return NULL;
  return base::android::ToJavaByteArray(env, &data[0], data.size()).Release();
}

}  // namespace cronet