1 files changed, 51 insertions, 0 deletions
diff --git a/toolkit/components/viaduct/Viaduct.cpp b/toolkit/components/viaduct/Viaduct.cpp
new file mode 100644
index 0000000000..8d7f76b0f8
--- /dev/null
+++ b/toolkit/components/viaduct/Viaduct.cpp
@@ -0,0 +1,51 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Viaduct.h"
+
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/ViaductRequest.h"
+
+namespace mozilla {
+
+namespace {
+
+extern "C" {
+uint8_t viaduct_initialize(
+    ViaductByteBuffer (*fetch_callback)(ViaductByteBuffer));
+}
+
+}  // namespace
+
+static StaticRefPtr<Viaduct> gViaduct;
+
+// static
+already_AddRefed<Viaduct> Viaduct::GetSingleton() {
+  if (gViaduct) {
+    return do_AddRef(gViaduct);
+  }
+
+  gViaduct = new Viaduct();
+  ClearOnShutdown(&gViaduct);
+  return do_AddRef(gViaduct);
+}
+
+NS_IMETHODIMP
+Viaduct::EnsureInitialized() {
+  if (mInitialized.compareExchange(false, true)) {
+    viaduct_initialize(ViaductCallback);
+  }
+  return NS_OK;
+}
+
+// static
+ViaductByteBuffer Viaduct::ViaductCallback(ViaductByteBuffer buffer) {
+  MOZ_ASSERT(!NS_IsMainThread(), "Background thread only!");
+  RefPtr<ViaductRequest> request = new ViaductRequest();
+  return request->MakeRequest(buffer);
+}
+
+NS_IMPL_ISUPPORTS(Viaduct, mozIViaduct)
+
+};  // namespace mozilla