From 5f8de423f190bbb79a62f804151bc24824fa32d8 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

---
 dom/base/nsCCUncollectableMarker.h | 51 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 dom/base/nsCCUncollectableMarker.h

(limited to 'dom/base/nsCCUncollectableMarker.h')

diff --git a/dom/base/nsCCUncollectableMarker.h b/dom/base/nsCCUncollectableMarker.h
new file mode 100644
index 000000000..98959efa8
--- /dev/null
+++ b/dom/base/nsCCUncollectableMarker.h
@@ -0,0 +1,51 @@
+/* -*- 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/. */
+
+#ifndef nsCCUncollectableMarker_h_
+#define nsCCUncollectableMarker_h_
+
+#include "js/TracingAPI.h"
+#include "mozilla/Attributes.h"
+#include "nsIObserver.h"
+
+class nsCCUncollectableMarker final : public nsIObserver
+{
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+
+  /**
+   * Inits a global nsCCUncollectableMarker. Should only be called once.
+   */
+  static nsresult Init();
+
+  /**
+   * Checks if we're collecting during a given generation
+   */
+  static bool InGeneration(uint32_t aGeneration)
+  {
+    return aGeneration && aGeneration == sGeneration;
+  }
+
+  template <class CCCallback>
+  static bool InGeneration(CCCallback& aCb, uint32_t aGeneration)
+  {
+    return InGeneration(aGeneration) && !aCb.WantAllTraces();
+  }
+
+  static uint32_t sGeneration;
+
+private:
+  nsCCUncollectableMarker() {}
+  ~nsCCUncollectableMarker() {}
+};
+
+namespace mozilla {
+namespace dom {
+void TraceBlackJS(JSTracer* aTrc, uint32_t aGCNumber, bool aIsShutdownGC);
+} // namespace dom
+} // namespace mozilla
+
+#endif
-- 
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