1 files changed, 154 insertions, 0 deletions
diff --git a/dom/cache/CacheStreamControlParent.cpp b/dom/cache/CacheStreamControlParent.cpp
new file mode 100644
index 0000000000..96df1c4aa3
--- /dev/null
+++ b/dom/cache/CacheStreamControlParent.cpp
@@ -0,0 +1,154 @@
+/* -*- 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 "mozilla/dom/cache/CacheStreamControlParent.h"
+
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "mozilla/dom/cache/CacheTypes.h"
+#include "mozilla/dom/cache/ReadStream.h"
+#include "mozilla/dom/cache/StreamList.h"
+#include "mozilla/ipc/FileDescriptorSetParent.h"
+#include "mozilla/ipc/IPCStreamUtils.h"
+#include "mozilla/ipc/PBackgroundParent.h"
+#include "mozilla/ipc/PFileDescriptorSetParent.h"
+#include "nsISupportsImpl.h"
+#include "nsTArray.h"
+
+namespace mozilla::dom::cache {
+
+using mozilla::dom::OptionalFileDescriptorSet;
+using mozilla::ipc::AutoIPCStream;
+using mozilla::ipc::FileDescriptor;
+using mozilla::ipc::FileDescriptorSetParent;
+using mozilla::ipc::PFileDescriptorSetParent;
+
+// declared in ActorUtils.h
+void DeallocPCacheStreamControlParent(PCacheStreamControlParent* aActor) {
+  delete aActor;
+}
+
+CacheStreamControlParent::CacheStreamControlParent() {
+  MOZ_COUNT_CTOR(cache::CacheStreamControlParent);
+}
+
+CacheStreamControlParent::~CacheStreamControlParent() {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  MOZ_DIAGNOSTIC_ASSERT(!mStreamList);
+  MOZ_COUNT_DTOR(cache::CacheStreamControlParent);
+}
+
+void CacheStreamControlParent::SerializeControl(
+    CacheReadStream* aReadStreamOut) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  MOZ_DIAGNOSTIC_ASSERT(aReadStreamOut);
+  aReadStreamOut->controlChild() = nullptr;
+  aReadStreamOut->controlParent() = this;
+}
+
+void CacheStreamControlParent::SerializeStream(
+    CacheReadStream* aReadStreamOut, nsIInputStream* aStream,
+    nsTArray<UniquePtr<AutoIPCStream>>& aStreamCleanupList) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  MOZ_DIAGNOSTIC_ASSERT(aReadStreamOut);
+
+  UniquePtr<AutoIPCStream> autoStream(
+      new AutoIPCStream(aReadStreamOut->stream()));
+  DebugOnly<bool> ok = autoStream->Serialize(aStream, Manager());
+  MOZ_ASSERT(ok);
+
+  aStreamCleanupList.AppendElement(std::move(autoStream));
+}
+
+void CacheStreamControlParent::OpenStream(const nsID& aId,
+                                          InputStreamResolver&& aResolver) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  MOZ_DIAGNOSTIC_ASSERT(aResolver);
+
+  if (!mStreamList || !mStreamList->ShouldOpenStreamFor(aId)) {
+    aResolver(nullptr);
+    return;
+  }
+
+  // Make sure to add ourself as a Listener even thought we are using
+  // a separate resolver function to signal the completion of the
+  // operation.  The Manager uses the existence of the Listener to ensure
+  // that its safe to complete the operation.
+  mStreamList->GetManager().ExecuteOpenStream(this, std::move(aResolver), aId);
+}
+
+void CacheStreamControlParent::NoteClosedAfterForget(const nsID& aId) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  RecvNoteClosed(aId);
+}
+
+#ifdef DEBUG
+void CacheStreamControlParent::AssertOwningThread() {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+}
+#endif
+
+void CacheStreamControlParent::ActorDestroy(ActorDestroyReason aReason) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  CloseAllReadStreamsWithoutReporting();
+  // If the initial SendPStreamControlConstructor() fails we will
+  // be called before mStreamList is set.
+  if (!mStreamList) {
+    return;
+  }
+  mStreamList->GetManager().RemoveListener(this);
+  mStreamList->RemoveStreamControl(this);
+  mStreamList->NoteClosedAll();
+  mStreamList = nullptr;
+}
+
+mozilla::ipc::IPCResult CacheStreamControlParent::RecvOpenStream(
+    const nsID& aStreamId, OpenStreamResolver&& aResolver) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+
+  OpenStream(aStreamId, [aResolver](nsCOMPtr<nsIInputStream>&& aStream) {
+    aResolver(aStream);
+  });
+
+  return IPC_OK();
+}
+
+mozilla::ipc::IPCResult CacheStreamControlParent::RecvNoteClosed(
+    const nsID& aId) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  MOZ_DIAGNOSTIC_ASSERT(mStreamList);
+  mStreamList->NoteClosed(aId);
+  return IPC_OK();
+}
+
+void CacheStreamControlParent::SetStreamList(
+    SafeRefPtr<StreamList> aStreamList) {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  MOZ_DIAGNOSTIC_ASSERT(!mStreamList);
+  mStreamList = std::move(aStreamList);
+}
+
+void CacheStreamControlParent::CloseAll() {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  NotifyCloseAll();
+  Unused << SendCloseAll();
+}
+
+void CacheStreamControlParent::Shutdown() {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  if (!Send__delete__(this)) {
+    // child process is gone, allow actor to be destroyed normally
+    NS_WARNING("Cache failed to delete stream actor.");
+    return;
+  }
+}
+
+void CacheStreamControlParent::NotifyCloseAll() {
+  NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
+  CloseAllReadStreams();
+}
+
+}  // namespace mozilla::dom::cache