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