1 files changed, 81 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/bytecode/TrackedReferences.cpp b/Source/JavaScriptCore/bytecode/TrackedReferences.cpp
new file mode 100644
index 000000000..d98fa9759
--- /dev/null
+++ b/Source/JavaScriptCore/bytecode/TrackedReferences.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "TrackedReferences.h"
+
+#include "JSCInlines.h"
+#include <wtf/CommaPrinter.h>
+
+namespace JSC {
+
+TrackedReferences::TrackedReferences()
+{
+}
+
+TrackedReferences::~TrackedReferences()
+{
+}
+
+void TrackedReferences::add(JSCell* cell)
+{
+    if (cell)
+        m_references.add(cell);
+}
+
+void TrackedReferences::add(JSValue value)
+{
+    if (value.isCell())
+        add(value.asCell());
+}
+
+void TrackedReferences::check(JSCell* cell) const
+{
+    if (!cell)
+        return;
+    
+    if (m_references.contains(cell))
+        return;
+    
+    dataLog("Found untracked reference: ", RawPointer(cell), "\n");
+    dataLog("All tracked references: ", *this, "\n");
+    RELEASE_ASSERT_NOT_REACHED();
+}
+
+void TrackedReferences::check(JSValue value) const
+{
+    if (value.isCell())
+        check(value.asCell());
+}
+
+void TrackedReferences::dump(PrintStream& out) const
+{
+    CommaPrinter comma;
+    for (JSCell* cell : m_references)
+        out.print(comma, RawPointer(cell));
+}
+
+} // namespace JSC
+