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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_METRICS_H_
#define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_METRICS_H_
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "v8/include/v8-metrics.h"
namespace blink {
class Document;
// Implements a V8 metrics recorder for gathering events generated
// within the V8 engine. This is used for some UMA and all UKM
// metrics. All event handling methods in here are run in the main
// thread, so thread-safety is not an issue and is handled by the
// V8 engine.
// For UKM events, the context is used to get the source id and the
// UKM recorder.
class CORE_EXPORT V8MetricsRecorder : public v8::metrics::Recorder {
public:
explicit V8MetricsRecorder(v8::Isolate* isolate) : isolate_(isolate) {}
void AddMainThreadEvent(const v8::metrics::WasmModuleDecoded& event,
ContextId context_id) override;
void AddMainThreadEvent(const v8::metrics::WasmModuleCompiled& event,
ContextId context_id) override;
void AddMainThreadEvent(const v8::metrics::WasmModuleInstantiated& event,
ContextId context_id) override;
void AddMainThreadEvent(const v8::metrics::WasmModuleTieredUp& event,
ContextId context_id) override;
void NotifyIsolateDisposal() override;
private:
struct UkmRecorderAndSourceId {
ukm::UkmRecorder* recorder;
ukm::SourceId source_id;
UkmRecorderAndSourceId(ukm::UkmRecorder* ukm_recorder,
ukm::SourceId ukm_source_id)
: recorder(ukm_recorder), source_id(ukm_source_id) {}
};
Document* GetDocument(ContextId context_id);
absl::optional<UkmRecorderAndSourceId> GetUkmRecorderAndSourceId(
ContextId context_id);
v8::Isolate* isolate_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_METRICS_H_
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