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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_TIMING_H_
#define COMPONENTS_AUTOFILL_CONTENT_RENDERER_TIMING_H_
#include "base/memory/raw_ref.h"
#include "base/memory/stack_allocated.h"
#include "base/time/time.h"
#include "components/autofill/core/common/is_required.h"
namespace autofill {
// We measure the performance of some functions of interest per caller. The
// caller identifies itself to the function with this struct.
struct CallTimerState {
enum class CallSite {
kApplyFieldsAction,
kBatchSelectOptionChange,
kDidChangeScrollOffsetImpl,
kExtractForm,
kFocusedElementChanged,
kGetFormDataFromUnownedInputElements,
kGetFormDataFromWebForm,
kGetSubmittedForm,
kHandleCaretMovedInFormField,
kJavaScriptChangedValue,
kNotifyPasswordManagerAboutClearedForm,
kOnProvisionallySaveForm,
kOnTextFieldValueChanged,
kQueryAutofillSuggestions,
kShowSuggestionPopup,
kUpdateFormCache,
kUpdateLastInteractedElement,
kDidDispatchDomContentLoadedEvent,
kEmitFormIssuesToDevtools,
kExtractForms,
kExtractFormsAndNotifyPasswordAutofillAgent,
};
CallSite call_site = internal::IsRequired();
base::TimeTicks last_autofill_agent_reset = internal::IsRequired();
base::TimeTicks last_dom_content_loaded = internal::IsRequired();
};
// Emits UMA metrics once it goes out of scope. It emits two types of metrics:
// - The duration of the object's scope.
// - The interval from the the last AutofillAgent::Reset() and the last
// DOMContentLoad event (as per `state`) until the end of the timer's scope.
//
// These metrics are recorded in microseconds. They are only recorded if the
// machine's timer has a high resolution.
//
// We use this instead of SCOPED_UMA_HISTOGRAM_TIMER_MICROS() because we need to
// determine the metric name dynamically.
class ScopedCallTimer final {
STACK_ALLOCATED();
public:
[[nodiscard]] explicit ScopedCallTimer(const char* name,
const CallTimerState state);
ScopedCallTimer(const ScopedCallTimer&) = delete;
ScopedCallTimer& operator=(const ScopedCallTimer&) = delete;
~ScopedCallTimer();
private:
const CallTimerState state_;
const char* const name_ = nullptr;
const base::TimeTicks before_ = base::TimeTicks::Now();
};
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CONTENT_RENDERER_TIMING_H_
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