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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_INTEREST_GROUP_DEBUGGABLE_AUCTION_WORKLET_TRACKER_H_
#define CONTENT_BROWSER_INTEREST_GROUP_DEBUGGABLE_AUCTION_WORKLET_TRACKER_H_
#include <set>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/no_destructor.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "content/common/content_export.h"
namespace content {
class DebuggableAuctionWorklet;
// This keeps track of when worklets are created and destroyed, and lets it be
// observed via Observer subscriptions or explicit enumeration.
class CONTENT_EXPORT DebuggableAuctionWorkletTracker {
public:
class Observer : public base::CheckedObserver {
public:
// Called when a worklet is about to be launched. An implementation can
// set `should_pause_on_start` to ask the worklet to not do anything yet
// until resumed via devtools protocol).
virtual void AuctionWorkletCreated(DebuggableAuctionWorklet* worklet,
bool& should_pause_on_start) {}
// Called when the worklet is being destroyed. It should not be accessed
// afterwards.
virtual void AuctionWorkletDestroyed(DebuggableAuctionWorklet* worklet) {}
protected:
~Observer() override = default;
};
explicit DebuggableAuctionWorkletTracker(
const DebuggableAuctionWorkletTracker&) = delete;
DebuggableAuctionWorkletTracker& operator=(
const DebuggableAuctionWorkletTracker&) = delete;
static DebuggableAuctionWorkletTracker* GetInstance();
std::vector<DebuggableAuctionWorklet*> GetAll();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
private:
friend class DebuggableAuctionWorklet;
friend class base::NoDestructor<DebuggableAuctionWorkletTracker>;
DebuggableAuctionWorkletTracker();
~DebuggableAuctionWorkletTracker();
void NotifyCreated(DebuggableAuctionWorklet* worklet,
bool& should_pause_on_start);
void NotifyDestroyed(DebuggableAuctionWorklet* worklet);
base::ObserverList<Observer> observer_list_;
std::set<raw_ptr<DebuggableAuctionWorklet, SetExperimental>> live_worklets_;
};
} // namespace content
#endif // CONTENT_BROWSER_INTEREST_GROUP_DEBUGGABLE_AUCTION_WORKLET_TRACKER_H_
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