1 files changed, 103 insertions, 0 deletions
diff --git a/netwerk/protocol/http/BackgroundChannelRegistrar.cpp b/netwerk/protocol/http/BackgroundChannelRegistrar.cpp
new file mode 100644
index 0000000000..c78ba43fc4
--- /dev/null
+++ b/netwerk/protocol/http/BackgroundChannelRegistrar.cpp
@@ -0,0 +1,103 @@
+/* -*- 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 "BackgroundChannelRegistrar.h"
+
+#include "HttpBackgroundChannelParent.h"
+#include "HttpChannelParent.h"
+#include "nsXULAppAPI.h"
+#include "mozilla/StaticPtr.h"
+
+namespace {
+mozilla::StaticRefPtr<mozilla::net::BackgroundChannelRegistrar> gSingleton;
+}
+
+namespace mozilla {
+namespace net {
+
+NS_IMPL_ISUPPORTS(BackgroundChannelRegistrar, nsIBackgroundChannelRegistrar)
+
+BackgroundChannelRegistrar::BackgroundChannelRegistrar() {
+  // BackgroundChannelRegistrar is a main-thread-only object.
+  // All the operations should be run on main thread.
+  // It should be used on chrome process only.
+  MOZ_ASSERT(XRE_IsParentProcess());
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+BackgroundChannelRegistrar::~BackgroundChannelRegistrar() {
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+// static
+already_AddRefed<nsIBackgroundChannelRegistrar>
+BackgroundChannelRegistrar::GetOrCreate() {
+  if (!gSingleton) {
+    gSingleton = new BackgroundChannelRegistrar();
+  }
+  return do_AddRef(gSingleton);
+}
+
+// static
+void BackgroundChannelRegistrar::Shutdown() {
+  MOZ_ASSERT(NS_IsMainThread());
+  gSingleton = nullptr;
+}
+
+void BackgroundChannelRegistrar::NotifyChannelLinked(
+    HttpChannelParent* aChannelParent, HttpBackgroundChannelParent* aBgParent) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aChannelParent);
+  MOZ_ASSERT(aBgParent);
+
+  aBgParent->LinkToChannel(aChannelParent);
+  aChannelParent->OnBackgroundParentReady(aBgParent);
+}
+
+// nsIBackgroundChannelRegistrar
+void BackgroundChannelRegistrar::DeleteChannel(uint64_t aKey) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  mChannels.Remove(aKey);
+  mBgChannels.Remove(aKey);
+}
+
+void BackgroundChannelRegistrar::LinkHttpChannel(uint64_t aKey,
+                                                 HttpChannelParent* aChannel) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aChannel);
+
+  RefPtr<HttpBackgroundChannelParent> bgParent;
+  bool found = mBgChannels.Remove(aKey, getter_AddRefs(bgParent));
+
+  if (!found) {
+    mChannels.Put(aKey, RefPtr{aChannel});
+    return;
+  }
+
+  MOZ_ASSERT(bgParent);
+  NotifyChannelLinked(aChannel, bgParent);
+}
+
+void BackgroundChannelRegistrar::LinkBackgroundChannel(
+    uint64_t aKey, HttpBackgroundChannelParent* aBgChannel) {
+  MOZ_ASSERT(NS_IsMainThread());
+  MOZ_ASSERT(aBgChannel);
+
+  RefPtr<HttpChannelParent> parent;
+  bool found = mChannels.Remove(aKey, getter_AddRefs(parent));
+
+  if (!found) {
+    mBgChannels.Put(aKey, RefPtr{aBgChannel});
+    return;
+  }
+
+  MOZ_ASSERT(parent);
+  NotifyChannelLinked(parent, aBgChannel);
+}
+
+}  // namespace net
+}  // namespace mozilla