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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_serviceworkerregistrationinfo_h
#define mozilla_dom_serviceworkerregistrationinfo_h
#include <functional>
#include "mozilla/dom/ServiceWorkerInfo.h"
#include "mozilla/dom/ServiceWorkerRegistrationBinding.h"
#include "mozilla/dom/ServiceWorkerRegistrationDescriptor.h"
#include "nsProxyRelease.h"
#include "nsTObserverArray.h"
namespace mozilla {
namespace dom {
class ServiceWorkerRegistrationListener;
class ServiceWorkerRegistrationInfo final
: public nsIServiceWorkerRegistrationInfo {
nsCOMPtr<nsIPrincipal> mPrincipal;
ServiceWorkerRegistrationDescriptor mDescriptor;
nsTArray<nsCOMPtr<nsIServiceWorkerRegistrationInfoListener>> mListeners;
nsTObserverArray<ServiceWorkerRegistrationListener*> mInstanceList;
struct VersionEntry {
const ServiceWorkerRegistrationDescriptor mDescriptor;
TimeStamp mTimeStamp;
explicit VersionEntry(
const ServiceWorkerRegistrationDescriptor& aDescriptor)
: mDescriptor(aDescriptor), mTimeStamp(TimeStamp::Now()) {}
};
nsTArray<UniquePtr<VersionEntry>> mVersionList;
const nsID mAgentClusterId = nsContentUtils::GenerateUUID();
uint32_t mControlledClientsCounter;
uint32_t mDelayMultiplier;
enum { NoUpdate, NeedTimeCheckAndUpdate, NeedUpdate } mUpdateState;
// Timestamp to track SWR's last update time
PRTime mCreationTime;
TimeStamp mCreationTimeStamp;
// The time of update is 0, if SWR've never been updated yet.
PRTime mLastUpdateTime;
RefPtr<ServiceWorkerInfo> mEvaluatingWorker;
RefPtr<ServiceWorkerInfo> mActiveWorker;
RefPtr<ServiceWorkerInfo> mWaitingWorker;
RefPtr<ServiceWorkerInfo> mInstallingWorker;
virtual ~ServiceWorkerRegistrationInfo();
// When unregister() is called on a registration, it is removed from the
// "scope to registration map" but not immediately "cleared" (i.e. its workers
// terminated, updated to the redundant state, etc.) because it may still be
// controlling clients. It is marked as unregistered and when all controlled
// clients go away, cleared. This way we can tell if a registration
// is unregistered by querying the object itself rather than incurring a table
// lookup (in the case when the registrations are passed around as pointers).
bool mUnregistered;
bool mCorrupt;
public:
NS_DECL_ISUPPORTS
NS_DECL_NSISERVICEWORKERREGISTRATIONINFO
typedef std::function<void()> TryToActivateCallback;
ServiceWorkerRegistrationInfo(const nsACString& aScope,
nsIPrincipal* aPrincipal,
ServiceWorkerUpdateViaCache aUpdateViaCache);
void AddInstance(ServiceWorkerRegistrationListener* aInstance,
const ServiceWorkerRegistrationDescriptor& aDescriptor);
void RemoveInstance(ServiceWorkerRegistrationListener* aInstance);
const nsCString& Scope() const;
nsIPrincipal* Principal() const;
bool IsUnregistered() const;
void SetUnregistered();
already_AddRefed<ServiceWorkerInfo> Newest() const {
RefPtr<ServiceWorkerInfo> newest;
if (mInstallingWorker) {
newest = mInstallingWorker;
} else if (mWaitingWorker) {
newest = mWaitingWorker;
} else {
newest = mActiveWorker;
}
return newest.forget();
}
already_AddRefed<ServiceWorkerInfo> NewestIncludingEvaluating() const {
if (mEvaluatingWorker) {
RefPtr<ServiceWorkerInfo> newest = mEvaluatingWorker;
return newest.forget();
}
return Newest();
}
already_AddRefed<ServiceWorkerInfo> GetServiceWorkerInfoById(uint64_t aId);
void StartControllingClient() {
++mControlledClientsCounter;
mDelayMultiplier = 0;
}
void StopControllingClient() {
MOZ_ASSERT(mControlledClientsCounter);
--mControlledClientsCounter;
}
bool IsControllingClients() const {
return mActiveWorker && mControlledClientsCounter;
}
// As a side effect, this nullifies
// `m{Evaluating,Installing,Waiting,Active}Worker`s.
void ShutdownWorkers();
void Clear();
void ClearAsCorrupt();
bool IsCorrupt() const;
void TryToActivateAsync(TryToActivateCallback&& aCallback = nullptr);
void TryToActivate(TryToActivateCallback&& aCallback);
void Activate();
void FinishActivate(bool aSuccess);
void RefreshLastUpdateCheckTime();
bool IsLastUpdateCheckTimeOverOneDay() const;
void MaybeScheduleTimeCheckAndUpdate();
void MaybeScheduleUpdate();
bool CheckAndClearIfUpdateNeeded();
ServiceWorkerInfo* GetEvaluating() const;
ServiceWorkerInfo* GetInstalling() const;
ServiceWorkerInfo* GetWaiting() const;
ServiceWorkerInfo* GetActive() const;
ServiceWorkerInfo* GetByDescriptor(
const ServiceWorkerDescriptor& aDescriptor) const;
// Set the given worker as the evaluating service worker. The worker
// state is not changed.
void SetEvaluating(ServiceWorkerInfo* aServiceWorker);
// Remove an existing evaluating worker, if present. The worker will
// be transitioned to the Redundant state.
void ClearEvaluating();
// Remove an existing installing worker, if present. The worker will
// be transitioned to the Redundant state.
void ClearInstalling();
// Transition the current evaluating worker to be the installing worker. The
// worker's state is update to Installing.
void TransitionEvaluatingToInstalling();
// Transition the current installing worker to be the waiting worker. The
// worker's state is updated to Installed.
void TransitionInstallingToWaiting();
// Override the current active worker. This is used during browser
// initialization to load persisted workers. Its also used to propagate
// active workers across child processes in e10s. This second use will
// go away once the ServiceWorkerManager moves to the parent process.
// The worker is transitioned to the Activated state.
void SetActive(ServiceWorkerInfo* aServiceWorker);
// Transition the current waiting worker to be the new active worker. The
// worker is updated to the Activating state.
void TransitionWaitingToActive();
// Determine if the registration is actively performing work.
bool IsIdle() const;
ServiceWorkerUpdateViaCache GetUpdateViaCache() const;
void SetUpdateViaCache(ServiceWorkerUpdateViaCache aUpdateViaCache);
int64_t GetLastUpdateTime() const;
void SetLastUpdateTime(const int64_t aTime);
const ServiceWorkerRegistrationDescriptor& Descriptor() const;
uint64_t Id() const;
uint64_t Version() const;
uint32_t GetUpdateDelay(const bool aWithMultiplier = true);
void FireUpdateFound();
void NotifyCleared();
void ClearWhenIdle();
const nsID& AgentClusterId() const;
private:
// Roughly equivalent to [[Update Registration State algorithm]]. Make sure
// this is called *before* updating SW instances' state, otherwise they
// may get CC-ed.
void UpdateRegistrationState();
void UpdateRegistrationState(ServiceWorkerUpdateViaCache aUpdateViaCache);
// Used by devtools to track changes to the properties of
// *nsIServiceWorkerRegistrationInfo*. Note, this doesn't necessarily need to
// be in sync with the DOM registration objects, but it does need to be called
// in the same task that changed |mInstallingWorker|, |mWaitingWorker| or
// |mActiveWorker|.
void NotifyChromeRegistrationListeners();
static uint64_t GetNextId();
static uint64_t GetNextVersion();
// `aFunc`'s argument will be a reference to
// `m{Evaluating,Installing,Waiting,Active}Worker` (not to copy of them).
// Additionally, a null check will be performed for each worker before each
// call to `aFunc`, so `aFunc` will always get a reference to a non-null
// pointer.
void ForEachWorker(void (*aFunc)(RefPtr<ServiceWorkerInfo>&));
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_serviceworkerregistrationinfo_h