1 files changed, 62 insertions, 0 deletions
diff --git a/src/bun.js/bindings/webcore/JSAbortSignalCustom.cpp b/src/bun.js/bindings/webcore/JSAbortSignalCustom.cpp
new file mode 100644
index 000000000..bc3bab081
--- /dev/null
+++ b/src/bun.js/bindings/webcore/JSAbortSignalCustom.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2019-2022 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.
+ */
+
+#include "config.h"
+#include "JSDOMWrapper.h"
+#include "wtf/NeverDestroyed.h"
+#include "JSAbortSignal.h"
+
+namespace WebCore {
+
+bool JSAbortSignalOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, JSC::AbstractSlotVisitor& visitor, const char** reason)
+{
+    auto& abortSignal = JSC::jsCast<JSAbortSignal*>(handle.slot()->asCell())->wrapped();
+    if (abortSignal.isFiringEventListeners()) {
+        if (UNLIKELY(reason))
+            *reason = "EventTarget firing event listeners";
+        return true;
+    }
+
+    if (abortSignal.aborted())
+        return false;
+
+    if (abortSignal.isFollowingSignal())
+        return true;
+
+    if (abortSignal.hasAbortEventListener() && abortSignal.hasActiveTimeoutTimer())
+        return true;
+
+    return visitor.containsOpaqueRoot(&abortSignal);
+}
+
+template<typename Visitor>
+void JSAbortSignal::visitAdditionalChildren(Visitor& visitor)
+{
+    wrapped().reason().visit(visitor);
+}
+
+DEFINE_VISIT_ADDITIONAL_CHILDREN(JSAbortSignal);
+
+} // namespace WebCore