blob: cdcc2941bbe377db928d0ef74526314a9d613664 [file] [log] [blame]
/*
* 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 "sdk/android/src/jni/classreferenceholder.h"
#include "sdk/android/src/jni/jni_helpers.h"
#include "system_wrappers/include/metrics.h"
#include "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