dom/quota/QuotaObject.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "QuotaObject.h"
   8
   9 #include "CanonicalQuotaObject.h"
  10 #include "mozilla/dom/quota/IPCQuotaObject.h"
  11 #include "mozilla/dom/quota/PRemoteQuotaObject.h"
  12 #include "mozilla/dom/quota/RemoteQuotaObjectChild.h"
  13 #include "mozilla/dom/quota/RemoteQuotaObjectParent.h"
  14 #include "mozilla/dom/quota/RemoteQuotaObjectParentTracker.h"
  15 #include "mozilla/ipc/BackgroundParent.h"
  16 #include "nsIInterfaceRequestor.h"
  17 #include "nsIInterfaceRequestorUtils.h"
  18 #include "RemoteQuotaObject.h"
  19
  20 namespace mozilla::dom::quota {
  21
  22 CanonicalQuotaObject* QuotaObject::AsCanonicalQuotaObject() {
  23   return mIsRemote ? nullptr : static_cast<CanonicalQuotaObject*>(this);
  24 }
  25
  26 RemoteQuotaObject* QuotaObject::AsRemoteQuotaObject() {
  27   return mIsRemote ? static_cast<RemoteQuotaObject*>(this) : nullptr;
  28 }
  29
  30 IPCQuotaObject QuotaObject::Serialize(nsIInterfaceRequestor* aCallbacks) {
  31   MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
  32   MOZ_RELEASE_ASSERT(!NS_IsMainThread());
  33   MOZ_RELEASE_ASSERT(!mozilla::ipc::IsOnBackgroundThread());
  34   MOZ_RELEASE_ASSERT(!GetCurrentThreadWorkerPrivate());
  35   MOZ_RELEASE_ASSERT(!mIsRemote);
  36
  37   mozilla::ipc::Endpoint<PRemoteQuotaObjectParent> parentEndpoint;
  38   mozilla::ipc::Endpoint<PRemoteQuotaObjectChild> childEndpoint;
  39   MOZ_ALWAYS_SUCCEEDS(
  40       PRemoteQuotaObject::CreateEndpoints(&parentEndpoint, &childEndpoint));
  41
  42   nsCOMPtr<RemoteQuotaObjectParentTracker> tracker =
  43       do_GetInterface(aCallbacks);
  44
  45   auto actor =
  46       MakeRefPtr<RemoteQuotaObjectParent>(AsCanonicalQuotaObject(), tracker);
  47
  48   if (tracker) {
  49     tracker->RegisterRemoteQuotaObjectParent(WrapNotNull(actor));
  50   }
  51
  52   parentEndpoint.Bind(actor);
  53
  54   IPCQuotaObject ipcQuotaObject;
  55   ipcQuotaObject.childEndpoint() = std::move(childEndpoint);
  56
  57   return ipcQuotaObject;
  58 }
  59
  60 // static
  61 RefPtr<QuotaObject> QuotaObject::Deserialize(IPCQuotaObject& aQuotaObject) {
  62   MOZ_RELEASE_ASSERT(!NS_IsMainThread());
  63   MOZ_RELEASE_ASSERT(!mozilla::ipc::IsOnBackgroundThread());
  64   MOZ_RELEASE_ASSERT(!GetCurrentThreadWorkerPrivate());
  65
  66   auto actor = MakeRefPtr<RemoteQuotaObjectChild>();
  67
  68   aQuotaObject.childEndpoint().Bind(actor);
  69
  70   return MakeRefPtr<RemoteQuotaObject>(actor);
  71 }
  72
  73 }  // namespace mozilla::dom::quota