1 files changed, 57 insertions, 0 deletions
diff --git a/src/bun.js/bindings/BunGCOutputConstraint.h b/src/bun.js/bindings/BunGCOutputConstraint.h
new file mode 100644
index 000000000..eaf4ef9ec
--- /dev/null
+++ b/src/bun.js/bindings/BunGCOutputConstraint.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2017-2022 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.
+ */
+
+#pragma once
+
+#include <JavaScriptCore/MarkingConstraint.h>
+
+namespace JSC {
+class VM;
+}
+
+namespace WebCore {
+
+class JSHeapData;
+
+class DOMGCOutputConstraint : public JSC::MarkingConstraint {
+    WTF_MAKE_FAST_ALLOCATED;
+
+public:
+    DOMGCOutputConstraint(JSC::VM&, JSHeapData&);
+    ~DOMGCOutputConstraint();
+
+protected:
+    void executeImpl(JSC::AbstractSlotVisitor&) override;
+    void executeImpl(JSC::SlotVisitor&) override;
+
+private:
+    template<typename Visitor> void executeImplImpl(Visitor&);
+
+    JSC::VM& m_vm;
+    JSHeapData& m_heapData;
+    uint64_t m_lastExecutionVersion;
+};
+
+} // namespace WebCore