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// Copyright 2019 The Chromium Authors
// 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_CORE_TIMING_PROFILER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_TIMING_PROFILER_H_
#include "base/time/time.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/dom_high_res_time_stamp.h"
#include "third_party/blink/renderer/core/dom/events/event_target.h"
#include "third_party/blink/renderer/core/timing/profiler_group.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/member.h"
#include "third_party/blink/renderer/platform/heap/prefinalizer.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
namespace blink {
class ExceptionState;
class ScriptState;
class ProfilerInitOptions;
class ProfilerTrace;
// A web-exposed JS sampling profiler created via blink::ProfilerGroup,
// wrapping a handle to v8::CpuProfiler. Records samples periodically from the
// isolate until stopped.
class CORE_EXPORT Profiler final : public EventTarget {
DEFINE_WRAPPERTYPEINFO();
USING_PRE_FINALIZER(Profiler, DisposeAsync);
public:
Profiler(ProfilerGroup* profiler_group,
ScriptState* script_state,
const String& profiler_id,
int target_sample_rate,
scoped_refptr<const SecurityOrigin> source_origin,
base::TimeTicks time_origin)
: profiler_group_(profiler_group),
script_state_(script_state),
profiler_id_(profiler_id),
target_sample_rate_(target_sample_rate),
source_origin_(source_origin),
time_origin_(time_origin) {}
~Profiler() override = default;
static Profiler* Create(ScriptState*,
const ProfilerInitOptions*,
ExceptionState&);
void Trace(Visitor* visitor) const override;
void DisposeAsync();
String ProfilerId() const { return profiler_id_; }
int TargetSampleRate() const { return target_sample_rate_; }
const SecurityOrigin* SourceOrigin() const { return source_origin_.get(); }
base::TimeTicks TimeOrigin() const { return time_origin_; }
// Overrides from extending EventTarget
const AtomicString& InterfaceName() const override;
ExecutionContext* GetExecutionContext() const override;
DOMHighResTimeStamp sampleInterval() { return target_sample_rate_; }
bool stopped() const { return !profiler_group_; }
ScriptPromise<ProfilerTrace> stop(ScriptState*);
void RemovedFromProfilerGroup() { profiler_group_ = nullptr; }
private:
Member<ProfilerGroup> profiler_group_;
Member<ScriptState> script_state_;
const String profiler_id_;
const int target_sample_rate_;
const scoped_refptr<const SecurityOrigin> source_origin_;
const base::TimeTicks time_origin_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_TIMING_PROFILER_H_
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