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// Copyright 2019 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.
#include "third_party/blink/renderer/core/timing/profiler.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/timing/profiler_group.h"
namespace blink {
Profiler::~Profiler() {
Dispose();
}
void Profiler::Trace(blink::Visitor* visitor) {
visitor->Trace(profiler_group_);
ScriptWrappable::Trace(visitor);
}
void Profiler::Dispose() {
if (profiler_group_) {
// It's safe to touch |profiler_group_| in Profiler's destructor as
// |profiler_group_| is guaranteed to outlive the Profiler, if set. This is
// due to ProfilerGroup nulling out this field for all attached Profilers
// prior to destruction.
profiler_group_->CancelProfiler(this);
profiler_group_ = nullptr;
}
}
ScriptPromise Profiler::stop(ScriptState* script_state) {
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
if (!stopped()) {
DCHECK(profiler_group_);
profiler_group_->StopProfiler(script_state, this, resolver);
profiler_group_ = nullptr;
} else {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kInvalidStateError, "Profiler already stopped."));
}
return promise;
}
} // namespace blink
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