gecko-dev/dom/localstorage/LSObserver.cpp
Simon Giesecke ad01a10a3b Bug 1634281 - Use nsTHashMap instead of nsDataHashtable. r=xpcom-reviewers,necko-reviewers,jgilbert,nika,valentin
Note that this patch only transforms the use of the nsDataHashtable type alias
to a directly equivalent use of nsTHashMap. It does not change the specification
of the hash key type to make use of the key class deduction that nsTHashMap
allows for in some cases. That can be done in a separate step, but requires more
attention.

Differential Revision: https://phabricator.services.mozilla.com/D106008
2021-03-10 10:47:47 +00:00

71 lines
1.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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/. */
#include "LSObserver.h"
// Local includes
#include "ActorsChild.h"
// Global includes
#include <utility>
#include "mozilla/StaticPtr.h"
#include "nsTHashMap.h"
#include "nsHashKeys.h"
namespace mozilla::dom {
namespace {
typedef nsTHashMap<nsCStringHashKey, LSObserver*> LSObserverHashtable;
StaticAutoPtr<LSObserverHashtable> gLSObservers;
} // namespace
LSObserver::LSObserver(const nsACString& aOrigin)
: mActor(nullptr), mOrigin(aOrigin) {
AssertIsOnOwningThread();
if (!gLSObservers) {
gLSObservers = new LSObserverHashtable();
}
MOZ_ASSERT(!gLSObservers->Contains(mOrigin));
gLSObservers->InsertOrUpdate(mOrigin, this);
}
LSObserver::~LSObserver() {
AssertIsOnOwningThread();
if (mActor) {
mActor->SendDeleteMeInternal();
MOZ_ASSERT(!mActor, "SendDeleteMeInternal should have cleared!");
}
MOZ_ASSERT(gLSObservers);
MOZ_ASSERT(gLSObservers->Get(mOrigin));
gLSObservers->Remove(mOrigin);
if (!gLSObservers->Count()) {
gLSObservers = nullptr;
}
}
// static
LSObserver* LSObserver::Get(const nsACString& aOrigin) {
return gLSObservers ? gLSObservers->Get(aOrigin) : nullptr;
}
void LSObserver::SetActor(LSObserverChild* aActor) {
AssertIsOnOwningThread();
MOZ_ASSERT(aActor);
MOZ_ASSERT(!mActor);
mActor = aActor;
}
} // namespace mozilla::dom