1 files changed, 50 insertions, 0 deletions
diff --git a/js/ipc/JavaScriptChild.h b/js/ipc/JavaScriptChild.h
new file mode 100644
index 000000000..c545c5f82
--- /dev/null
+++ b/js/ipc/JavaScriptChild.h
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=4 sw=4 et 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/. */
+
+#ifndef mozilla_jsipc_JavaScriptChild_h_
+#define mozilla_jsipc_JavaScriptChild_h_
+
+#include "JavaScriptBase.h"
+#include "mozilla/jsipc/PJavaScriptChild.h"
+
+namespace mozilla {
+namespace jsipc {
+
+class JavaScriptChild : public JavaScriptBase<PJavaScriptChild>
+{
+  public:
+    JavaScriptChild() : strongReferenceObjIdMinimum_(0) {}
+    virtual ~JavaScriptChild();
+
+    bool init();
+    void trace(JSTracer* trc);
+    void updateWeakPointers();
+
+    void drop(JSObject* obj);
+
+    bool allowMessage(JSContext* cx) override { return true; }
+
+  protected:
+    virtual bool isParent() override { return false; }
+    virtual JSObject* scopeForTargetObjects() override;
+
+    bool RecvDropTemporaryStrongReferences(const uint64_t& upToObjId) override;
+
+  private:
+    bool fail(JSContext* cx, ReturnStatus* rs);
+    bool ok(ReturnStatus* rs);
+
+    // JavaScriptChild will keep strong references to JS objects that are
+    // referenced by the parent only if their ID is >=
+    // strongReferenceObjIdMinimum_.
+    uint64_t strongReferenceObjIdMinimum_;
+};
+
+} // namespace jsipc
+} // namespace mozilla
+
+#endif