import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/quota/QuotaRequests.cpp

@@ -0,0 +1,291 @@
+/* -*- 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/. */
+
+#include "QuotaRequests.h"
+
+#include "ActorsChild.h"
+#include "nsIQuotaCallbacks.h"
+
+namespace mozilla {
+namespace dom {
+namespace quota {
+
+RequestBase::RequestBase()
+  : mResultCode(NS_OK)
+  , mHaveResultOrErrorCode(false)
+{
+#ifdef DEBUG
+  mOwningThread = PR_GetCurrentThread();
+#endif
+  AssertIsOnOwningThread();
+}
+
+RequestBase::RequestBase(nsIPrincipal* aPrincipal)
+  : mPrincipal(aPrincipal)
+  , mResultCode(NS_OK)
+  , mHaveResultOrErrorCode(false)
+{
+#ifdef DEBUG
+  mOwningThread = PR_GetCurrentThread();
+#endif
+  AssertIsOnOwningThread();
+}
+
+#ifdef DEBUG
+
+void
+RequestBase::AssertIsOnOwningThread() const
+{
+  MOZ_ASSERT(mOwningThread);
+  MOZ_ASSERT(PR_GetCurrentThread() == mOwningThread);
+}
+
+#endif // DEBUG
+
+void
+RequestBase::SetError(nsresult aRv)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(mResultCode == NS_OK);
+  MOZ_ASSERT(!mHaveResultOrErrorCode);
+
+  mResultCode = aRv;
+  mHaveResultOrErrorCode = true;
+
+  FireCallback();
+}
+
+NS_IMPL_CYCLE_COLLECTION_0(RequestBase)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(RequestBase)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(RequestBase)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(RequestBase)
+
+NS_IMETHODIMP
+RequestBase::GetPrincipal(nsIPrincipal** aPrincipal)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aPrincipal);
+
+  NS_IF_ADDREF(*aPrincipal = mPrincipal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+RequestBase::GetResultCode(nsresult* aResultCode)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResultCode);
+
+  if (!mHaveResultOrErrorCode) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aResultCode = mResultCode;
+  return NS_OK;
+}
+
+UsageRequest::UsageRequest(nsIQuotaUsageCallback* aCallback)
+  : mCallback(aCallback)
+  , mBackgroundActor(nullptr)
+  , mCanceled(false)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aCallback);
+}
+
+UsageRequest::UsageRequest(nsIPrincipal* aPrincipal,
+                           nsIQuotaUsageCallback* aCallback)
+  : RequestBase(aPrincipal)
+  , mCallback(aCallback)
+  , mBackgroundActor(nullptr)
+  , mCanceled(false)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aPrincipal);
+  MOZ_ASSERT(aCallback);
+}
+
+UsageRequest::~UsageRequest()
+{
+  AssertIsOnOwningThread();
+}
+
+void
+UsageRequest::SetBackgroundActor(QuotaUsageRequestChild* aBackgroundActor)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aBackgroundActor);
+  MOZ_ASSERT(!mBackgroundActor);
+
+  mBackgroundActor = aBackgroundActor;
+
+  if (mCanceled) {
+    mBackgroundActor->SendCancel();
+  }
+}
+
+void
+UsageRequest::SetResult(nsIVariant* aResult)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResult);
+  MOZ_ASSERT(!mHaveResultOrErrorCode);
+
+  mResult = aResult;
+
+  mHaveResultOrErrorCode = true;
+
+  FireCallback();
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(UsageRequest, RequestBase, mCallback)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(UsageRequest)
+  NS_INTERFACE_MAP_ENTRY(nsIQuotaUsageRequest)
+NS_INTERFACE_MAP_END_INHERITING(RequestBase)
+
+NS_IMPL_ADDREF_INHERITED(UsageRequest, RequestBase)
+NS_IMPL_RELEASE_INHERITED(UsageRequest, RequestBase)
+
+NS_IMETHODIMP
+UsageRequest::GetResult(nsIVariant** aResult)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aResult);
+
+  if (!mHaveResultOrErrorCode) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_IF_ADDREF(*aResult = mResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+UsageRequest::GetCallback(nsIQuotaUsageCallback** aCallback)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aCallback);
+
+  NS_IF_ADDREF(*aCallback = mCallback);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+UsageRequest::SetCallback(nsIQuotaUsageCallback* aCallback)
+{
+  AssertIsOnOwningThread();
+
+  mCallback = aCallback;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+UsageRequest::Cancel()
+{
+  AssertIsOnOwningThread();
+
+  if (mCanceled) {
+    NS_WARNING("Canceled more than once?!");
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  if (mBackgroundActor) {
+    mBackgroundActor->SendCancel();
+  }
+
+  mCanceled = true;
+
+  return NS_OK;
+}
+
+void
+UsageRequest::FireCallback()
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(mCallback);
+
+  mCallback->OnUsageResult(this);
+
+  // Clean up.
+  mCallback = nullptr;
+}
+
+Request::Request()
+{
+  AssertIsOnOwningThread();
+}
+
+Request::Request(nsIPrincipal* aPrincipal)
+  : RequestBase(aPrincipal)
+{
+  AssertIsOnOwningThread();
+}
+
+Request::~Request()
+{
+  AssertIsOnOwningThread();
+}
+
+void
+Request::SetResult()
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(!mHaveResultOrErrorCode);
+
+  mHaveResultOrErrorCode = true;
+
+  FireCallback();
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(Request, RequestBase, mCallback)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(Request)
+  NS_INTERFACE_MAP_ENTRY(nsIQuotaRequest)
+NS_INTERFACE_MAP_END_INHERITING(RequestBase)
+
+NS_IMPL_ADDREF_INHERITED(mozilla::dom::quota::Request, RequestBase)
+NS_IMPL_RELEASE_INHERITED(mozilla::dom::quota::Request, RequestBase)
+
+NS_IMETHODIMP
+Request::GetCallback(nsIQuotaCallback** aCallback)
+{
+  AssertIsOnOwningThread();
+  MOZ_ASSERT(aCallback);
+
+  NS_IF_ADDREF(*aCallback = mCallback);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+Request::SetCallback(nsIQuotaCallback* aCallback)
+{
+  AssertIsOnOwningThread();
+
+  mCallback = aCallback;
+  return NS_OK;
+}
+
+void
+Request::FireCallback()
+{
+  AssertIsOnOwningThread();
+
+  if (mCallback) {
+    mCallback->OnComplete(this);
+
+    // Clean up.
+    mCallback = nullptr;
+  }
+}
+
+} // namespace quota
+} // namespace dom
+} // namespace mozilla