1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/android/animation_frame_time_histogram.h"
6
7 #include "base/android/jni_string.h"
8 #include "base/metrics/histogram_macros.h"
9 #include "jni/AnimationFrameTimeHistogram_jni.h"
10
11 // static
SaveHistogram(JNIEnv * env,const JavaParamRef<jobject> & jcaller,const JavaParamRef<jstring> & j_histogram_name,const JavaParamRef<jlongArray> & j_frame_times_ms,jint j_count)12 void SaveHistogram(JNIEnv* env,
13 const JavaParamRef<jobject>& jcaller,
14 const JavaParamRef<jstring>& j_histogram_name,
15 const JavaParamRef<jlongArray>& j_frame_times_ms,
16 jint j_count) {
17 jlong *frame_times_ms = env->GetLongArrayElements(j_frame_times_ms, NULL);
18 std::string histogram_name = base::android::ConvertJavaStringToUTF8(
19 env, j_histogram_name);
20
21 for (int i = 0; i < j_count; ++i) {
22 UMA_HISTOGRAM_TIMES(histogram_name.c_str(),
23 base::TimeDelta::FromMilliseconds(frame_times_ms[i]));
24 }
25 }
26
27 namespace base {
28 namespace android {
29
30 // static
RegisterAnimationFrameTimeHistogram(JNIEnv * env)31 bool RegisterAnimationFrameTimeHistogram(JNIEnv* env) {
32 return RegisterNativesImpl(env);
33 }
34
35 } // namespace android
36 } // namespace base
37