From ad18d877ddd2a44d98fa12ccd3dbbcf4d0ac4299 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 xpcom/base/nsCycleCollectorTraceJSHelpers.cpp | 105 ++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 xpcom/base/nsCycleCollectorTraceJSHelpers.cpp

(limited to 'xpcom/base/nsCycleCollectorTraceJSHelpers.cpp')

diff --git a/xpcom/base/nsCycleCollectorTraceJSHelpers.cpp b/xpcom/base/nsCycleCollectorTraceJSHelpers.cpp
new file mode 100644
index 000000000..eb06a389c
--- /dev/null
+++ b/xpcom/base/nsCycleCollectorTraceJSHelpers.cpp
@@ -0,0 +1,105 @@
+/* -*- 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 "nsCycleCollectionParticipant.h"
+#include "jsapi.h"
+#include "jsfriendapi.h"
+
+void
+CycleCollectionNoteEdgeNameImpl(nsCycleCollectionTraversalCallback& aCallback,
+                                const char* aName,
+                                uint32_t aFlags)
+{
+  nsAutoCString arrayEdgeName(aName);
+  if (aFlags & CycleCollectionEdgeNameArrayFlag) {
+    arrayEdgeName.AppendLiteral("[i]");
+  }
+  aCallback.NoteNextEdgeName(arrayEdgeName.get());
+}
+
+void
+nsScriptObjectTracer::NoteJSChild(JS::GCCellPtr aGCThing, const char* aName,
+                                  void* aClosure)
+{
+  nsCycleCollectionTraversalCallback* cb =
+    static_cast<nsCycleCollectionTraversalCallback*>(aClosure);
+  NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(*cb, aName);
+  if (mozilla::AddToCCKind(aGCThing.kind())) {
+    cb->NoteJSChild(aGCThing);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JS::Heap<JS::Value>* aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (aPtr->unbarrieredGet().isMarkable()) {
+    mCallback(JS::GCCellPtr(aPtr->unbarrieredGet()), aName, aClosure);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JS::Heap<jsid>* aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (JSID_IS_GCTHING(aPtr->unbarrieredGet())) {
+    mCallback(JSID_TO_GCTHING(aPtr->unbarrieredGet()), aName, aClosure);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JS::Heap<JSObject*>* aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (*aPtr) {
+    mCallback(JS::GCCellPtr(aPtr->unbarrieredGet()), aName, aClosure);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JSObject** aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (*aPtr) {
+    mCallback(JS::GCCellPtr(*aPtr), aName, aClosure);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JS::TenuredHeap<JSObject*>* aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (*aPtr) {
+    mCallback(JS::GCCellPtr(aPtr->unbarrieredGetPtr()), aName, aClosure);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JS::Heap<JSFunction*>* aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (*aPtr) {
+    mCallback(JS::GCCellPtr(aPtr->unbarrieredGet()), aName, aClosure);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JS::Heap<JSString*>* aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (*aPtr) {
+    mCallback(JS::GCCellPtr(aPtr->unbarrieredGet()), aName, aClosure);
+  }
+}
+
+void
+TraceCallbackFunc::Trace(JS::Heap<JSScript*>* aPtr, const char* aName,
+                         void* aClosure) const
+{
+  if (*aPtr) {
+    mCallback(JS::GCCellPtr(aPtr->unbarrieredGet()), aName, aClosure);
+  }
+}
-- 
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