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| 1 /* | |
| 2 * Copyright 2016 The WebRTC project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <map> | |
| 12 #include <memory> | |
| 13 | |
| 14 #include "webrtc/api/android/jni/classreferenceholder.h" | |
| 15 #include "webrtc/api/android/jni/jni_helpers.h" | |
| 16 #include "webrtc/system_wrappers/include/metrics.h" | |
| 17 #include "webrtc/system_wrappers/include/metrics_default.h" | |
| 18 | |
| 19 // Enables collection of native histograms and creating them. | |
| 20 namespace webrtc_jni { | |
| 21 | |
| 22 JOW(void, Metrics_nativeEnable)(JNIEnv* jni, jclass) { | |
| 23 webrtc::metrics::Enable(); | |
| 24 } | |
| 25 | |
| 26 // Gets and clears native histograms. | |
| 27 JOW(jobject, Metrics_nativeGetAndReset)(JNIEnv* jni, jclass) { | |
| 28 jclass j_metrics_class = jni->FindClass("org/webrtc/Metrics"); | |
| 29 jmethodID j_add = | |
| 30 GetMethodID(jni, j_metrics_class, "add", | |
| 31 "(Ljava/lang/String;Lorg/webrtc/Metrics$HistogramInfo;)V"); | |
| 32 jclass j_info_class = jni->FindClass("org/webrtc/Metrics$HistogramInfo"); | |
| 33 jmethodID j_add_sample = GetMethodID(jni, j_info_class, "addSample", "(II)V"); | |
| 34 | |
| 35 // Create |Metrics|. | |
| 36 jobject j_metrics = jni->NewObject( | |
| 37 j_metrics_class, GetMethodID(jni, j_metrics_class, "<init>", "()V")); | |
| 38 | |
| 39 std::map<std::string, std::unique_ptr<webrtc::metrics::SampleInfo>> | |
| 40 histograms; | |
| 41 webrtc::metrics::GetAndReset(&histograms); | |
| 42 for (const auto& kv : histograms) { | |
| 43 // Create and add samples to |HistogramInfo|. | |
| 44 jobject j_info = jni->NewObject( | |
| 45 j_info_class, GetMethodID(jni, j_info_class, "<init>", "(III)V"), | |
| 46 kv.second->min, kv.second->max, | |
| 47 static_cast<int>(kv.second->bucket_count)); | |
| 48 for (const auto& sample : kv.second->samples) { | |
| 49 jni->CallVoidMethod(j_info, j_add_sample, sample.first, sample.second); | |
| 50 } | |
| 51 // Add |HistogramInfo| to |Metrics|. | |
| 52 jstring j_name = jni->NewStringUTF(kv.first.c_str()); | |
| 53 jni->CallVoidMethod(j_metrics, j_add, j_name, j_info); | |
| 54 jni->DeleteLocalRef(j_name); | |
| 55 jni->DeleteLocalRef(j_info); | |
| 56 } | |
| 57 CHECK_EXCEPTION(jni); | |
| 58 return j_metrics; | |
| 59 } | |
| 60 | |
| 61 } // namespace webrtc_jni | |
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