| /* |
| * Copyright 2016 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <map> |
| #include <memory> |
| |
| #include "webrtc/sdk/android/src/jni/classreferenceholder.h" |
| #include "webrtc/sdk/android/src/jni/jni_helpers.h" |
| #include "webrtc/system_wrappers/include/metrics.h" |
| #include "webrtc/system_wrappers/include/metrics_default.h" |
| |
| // Enables collection of native histograms and creating them. |
| namespace webrtc { |
| namespace jni { |
| |
| JNI_FUNCTION_DECLARATION(void, Metrics_nativeEnable, JNIEnv* jni, jclass) { |
| metrics::Enable(); |
| } |
| |
| // Gets and clears native histograms. |
| JNI_FUNCTION_DECLARATION(jobject, |
| Metrics_nativeGetAndReset, |
| JNIEnv* jni, |
| jclass) { |
| jclass j_metrics_class = jni->FindClass("org/webrtc/Metrics"); |
| jmethodID j_add = |
| GetMethodID(jni, j_metrics_class, "add", |
| "(Ljava/lang/String;Lorg/webrtc/Metrics$HistogramInfo;)V"); |
| jclass j_info_class = jni->FindClass("org/webrtc/Metrics$HistogramInfo"); |
| jmethodID j_add_sample = GetMethodID(jni, j_info_class, "addSample", "(II)V"); |
| |
| // Create |Metrics|. |
| jobject j_metrics = jni->NewObject( |
| j_metrics_class, GetMethodID(jni, j_metrics_class, "<init>", "()V")); |
| |
| std::map<std::string, std::unique_ptr<metrics::SampleInfo>> histograms; |
| metrics::GetAndReset(&histograms); |
| for (const auto& kv : histograms) { |
| // Create and add samples to |HistogramInfo|. |
| jobject j_info = jni->NewObject( |
| j_info_class, GetMethodID(jni, j_info_class, "<init>", "(III)V"), |
| kv.second->min, kv.second->max, |
| static_cast<int>(kv.second->bucket_count)); |
| for (const auto& sample : kv.second->samples) { |
| jni->CallVoidMethod(j_info, j_add_sample, sample.first, sample.second); |
| } |
| // Add |HistogramInfo| to |Metrics|. |
| jstring j_name = jni->NewStringUTF(kv.first.c_str()); |
| jni->CallVoidMethod(j_metrics, j_add, j_name, j_info); |
| jni->DeleteLocalRef(j_name); |
| jni->DeleteLocalRef(j_info); |
| } |
| CHECK_EXCEPTION(jni); |
| return j_metrics; |
| } |
| |
| } // namespace jni |
| } // namespace webrtc |