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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.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_WORKER_RESOURCE_TIMING_NOTIFIER_IMPL_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_WORKER_RESOURCE_TIMING_NOTIFIER_IMPL_H_
#include "base/memory/scoped_refptr.h"
#include "base/single_thread_task_runner.h"
#include "third_party/blink/public/mojom/timing/worker_timing_container.mojom-blink.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/loader/fetch/worker_resource_timing_notifier.h"
namespace blink {
class ExecutionContext;
// The implementation of WorkerResourceTimingNotifier that dispatches resource
// timing info to an execution context which is associated with the instance of
// this class. Thread safety: For the ctor and dtor, these must be called on the
// sequence of the execution context. For AddResourceTiming(), it can be called
// on a different sequence from the sequence of the execution context. In that
// case, this creates a copy of the given resource timing and passes it to the
// execution context's sequence via PostCrossThreadTask.
class CORE_EXPORT WorkerResourceTimingNotifierImpl final
: public WorkerResourceTimingNotifier {
public:
static WorkerResourceTimingNotifierImpl* CreateForInsideResourceFetcher(
ExecutionContext&);
static WorkerResourceTimingNotifierImpl* CreateForOutsideResourceFetcher(
ExecutionContext&);
// Do not call this. Use static creation function instead. This is public
// only for MakeGarbageCollected.
explicit WorkerResourceTimingNotifierImpl(
scoped_refptr<base::SingleThreadTaskRunner> task_runner);
~WorkerResourceTimingNotifierImpl() override = default;
void AddResourceTiming(
const WebResourceTimingInfo&,
const AtomicString& initiator_type,
mojo::PendingReceiver<mojom::blink::WorkerTimingContainer>
worker_timing_receiver) override;
void Trace(Visitor*) override;
private:
void AddCrossThreadResourceTiming(
const WebResourceTimingInfo&,
const String& initiator_type,
mojo::PendingReceiver<mojom::blink::WorkerTimingContainer>
worker_timing_receiver);
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
// Used when the execution context lives on the same sequence of this
// notifier.
// Note that using CrossThreadWeakPersistent should be fine to hold a
// reference to an object that lives on the same sequence. Theoretically we
// don't need to use Member<ExecutionContext> here, but we've seen
// mysterious crashes when we do so.
// TODO(crbug.com/959508): Merge |inside_execution_context_| and
// |outside_execution_context_|.
Member<ExecutionContext> inside_execution_context_;
// Used when the execution context lives on a different sequence of this
// notifier.
CrossThreadWeakPersistent<ExecutionContext> outside_execution_context_;
DISALLOW_COPY_AND_ASSIGN(WorkerResourceTimingNotifierImpl);
};
// NullWorkerResourceTimingNotifier does nothing when AddResourceTiming() is
// called. This is used for toplevel shared/service worker script fetch.
class CORE_EXPORT NullWorkerResourceTimingNotifier final
: public WorkerResourceTimingNotifier {
public:
NullWorkerResourceTimingNotifier() = default;
~NullWorkerResourceTimingNotifier() override = default;
void AddResourceTiming(
const WebResourceTimingInfo&,
const AtomicString& initiator_type,
mojo::PendingReceiver<mojom::blink::WorkerTimingContainer>
worker_timing_receiver) override {}
private:
DISALLOW_COPY_AND_ASSIGN(NullWorkerResourceTimingNotifier);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_WORKER_RESOURCE_TIMING_NOTIFIER_IMPL_H_
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