Add m-esr52 at 52.6.0

1 files changed, 77 insertions, 0 deletions

diff --git a/js/src/vm/TaggedProto.cpp b/js/src/vm/TaggedProto.cpp
new file mode 100644
index 000000000..8bc99d2f2
--- /dev/null
+++ b/js/src/vm/TaggedProto.cpp
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * 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 "vm/TaggedProto.h"
+
+#include "jsfun.h"
+#include "jsobj.h"
+
+#include "gc/Barrier.h"
+#include "gc/Zone.h"
+
+#include "vm/Caches-inl.h"
+
+namespace js {
+
+/* static */ void
+InternalBarrierMethods<TaggedProto>::preBarrier(TaggedProto& proto)
+{
+    InternalBarrierMethods<JSObject*>::preBarrier(proto.toObjectOrNull());
+}
+
+/* static */ void
+InternalBarrierMethods<TaggedProto>::postBarrier(TaggedProto* vp, TaggedProto prev,
+                                                 TaggedProto next)
+{
+    JSObject* prevObj = prev.isObject() ? prev.toObject() : nullptr;
+    JSObject* nextObj = next.isObject() ? next.toObject() : nullptr;
+    InternalBarrierMethods<JSObject*>::postBarrier(reinterpret_cast<JSObject**>(vp), prevObj,
+                                                   nextObj);
+}
+
+/* static */ void
+InternalBarrierMethods<TaggedProto>::readBarrier(const TaggedProto& proto)
+{
+    InternalBarrierMethods<JSObject*>::readBarrier(proto.toObjectOrNull());
+}
+
+} // namespace js
+
+js::HashNumber
+js::TaggedProto::hashCode() const
+{
+    return Zone::UniqueIdToHash(uniqueId());
+}
+
+bool
+js::TaggedProto::hasUniqueId() const
+{
+    if (!isObject())
+        return true;
+    JSObject* obj = toObject();
+    return obj->zone()->hasUniqueId(obj);
+}
+
+bool
+js::TaggedProto::ensureUniqueId() const
+{
+    if (!isObject())
+        return true;
+    uint64_t unusedId;
+    JSObject* obj = toObject();
+    return obj->zone()->getUniqueId(obj, &unusedId);
+}
+
+uint64_t
+js::TaggedProto::uniqueId() const
+{
+    if (isDynamic())
+        return uint64_t(1);
+    JSObject* obj = toObjectOrNull();
+    if (!obj)
+        return uint64_t(0);
+    return obj->zone()->getUniqueIdInfallible(obj);
+}