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/jni_string.h"
6 #include "base/metrics/histogram_macros.h"
7 #include "jni/AnimationFrameTimeHistogram_jni.h"
8
9 using base::android::JavaParamRef;
10
11 // static
JNI_AnimationFrameTimeHistogram_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 JNI_AnimationFrameTimeHistogram_SaveHistogram(
13 JNIEnv* env,
14 const JavaParamRef<jobject>& jcaller,
15 const JavaParamRef<jstring>& j_histogram_name,
16 const JavaParamRef<jlongArray>& j_frame_times_ms,
17 jint j_count) {
18 jlong *frame_times_ms = env->GetLongArrayElements(j_frame_times_ms, NULL);
19 std::string histogram_name = base::android::ConvertJavaStringToUTF8(
20 env, j_histogram_name);
21
22 for (int i = 0; i < j_count; ++i) {
23 UMA_HISTOGRAM_TIMES(histogram_name.c_str(),
24 base::TimeDelta::FromMilliseconds(frame_times_ms[i]));
25 }
26 }
27