1 files changed, 92 insertions, 0 deletions
diff --git a/js/xpconnect/loader/ScriptCacheActors.cpp b/js/xpconnect/loader/ScriptCacheActors.cpp
new file mode 100644
index 0000000000..9b44f0ffe6
--- /dev/null
+++ b/js/xpconnect/loader/ScriptCacheActors.cpp
@@ -0,0 +1,92 @@
+/* -*- 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/ScriptPreloader.h"
+#include "ScriptPreloader-inl.h"
+#include "mozilla/loader/ScriptCacheActors.h"
+
+#include "mozilla/dom/ContentParent.h"
+
+namespace mozilla {
+namespace loader {
+
+void ScriptCacheChild::Init(const Maybe<FileDescriptor>& cacheFile,
+                            bool wantCacheData) {
+  mWantCacheData = wantCacheData;
+
+  auto& cache = ScriptPreloader::GetChildSingleton();
+  Unused << cache.InitCache(cacheFile, this);
+
+  if (!wantCacheData) {
+    // If the parent process isn't expecting any cache data from us, we're
+    // done.
+    Send__delete__(this, AutoTArray<ScriptData, 0>());
+  }
+}
+
+// Finalize the script cache for the content process, and send back data about
+// any scripts executed up to this point.
+void ScriptCacheChild::SendScriptsAndFinalize(
+    ScriptPreloader::ScriptHash& scripts) {
+  MOZ_ASSERT(mWantCacheData);
+
+  AutoSafeJSAPI jsapi;
+
+  auto matcher = ScriptPreloader::Match<ScriptPreloader::ScriptStatus::Saved>();
+
+  nsTArray<ScriptData> dataArray;
+  for (auto& script : IterHash(scripts, matcher)) {
+    if (!script->mSize && !script->XDREncode(jsapi.cx())) {
+      continue;
+    }
+
+    auto data = dataArray.AppendElement();
+
+    data->url() = script->mURL;
+    data->cachePath() = script->mCachePath;
+    data->loadTime() = script->mLoadTime;
+
+    if (script->HasBuffer()) {
+      auto& xdrData = script->Buffer();
+      data->xdrData().AppendElements(xdrData.begin(), xdrData.length());
+      script->FreeData();
+    }
+  }
+
+  Send__delete__(this, dataArray);
+}
+
+void ScriptCacheChild::ActorDestroy(ActorDestroyReason aWhy) {
+  auto& cache = ScriptPreloader::GetChildSingleton();
+  cache.mChildActor = nullptr;
+}
+
+IPCResult ScriptCacheParent::Recv__delete__(nsTArray<ScriptData>&& scripts) {
+  if (!mWantCacheData && scripts.Length()) {
+    return IPC_FAIL(this, "UnexpectedScriptData");
+  }
+
+  // We don't want any more data from the process at this point.
+  mWantCacheData = false;
+
+  // Merge the child's script data with the parent's.
+  auto parent = static_cast<dom::ContentParent*>(Manager());
+  auto processType =
+      ScriptPreloader::GetChildProcessType(parent->GetRemoteType());
+
+  auto& cache = ScriptPreloader::GetChildSingleton();
+  for (auto& script : scripts) {
+    cache.NoteStencil(script.url(), script.cachePath(), processType,
+                      std::move(script.xdrData()), script.loadTime());
+  }
+
+  return IPC_OK();
+}
+
+void ScriptCacheParent::ActorDestroy(ActorDestroyReason aWhy) {}
+
+}  // namespace loader
+}  // namespace mozilla