1 files changed, 80 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.cpp b/Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.cpp
new file mode 100644
index 000000000..5cfb3d1e8
--- /dev/null
+++ b/Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.cpp
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2012 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 "StructureStubClearingWatchpoint.h"
+
+#if ENABLE(JIT)
+
+#include "CodeBlock.h"
+#include "StructureStubInfo.h"
+
+namespace JSC {
+
+StructureStubClearingWatchpoint::~StructureStubClearingWatchpoint() { }
+
+StructureStubClearingWatchpoint* StructureStubClearingWatchpoint::push(
+    WatchpointsOnStructureStubInfo& holder,
+    OwnPtr<StructureStubClearingWatchpoint>& head)
+{
+    head = adoptPtr(new StructureStubClearingWatchpoint(holder, head.release()));
+    return head.get();
+}
+
+void StructureStubClearingWatchpoint::fireInternal()
+{
+    // This will implicitly cause my own demise: stub reset removes all watchpoints.
+    // That works, because deleting a watchpoint removes it from the set's list, and
+    // the set's list traversal for firing is robust against the set changing.
+    m_holder.codeBlock()->resetStub(*m_holder.stubInfo());
+}
+
+WatchpointsOnStructureStubInfo::~WatchpointsOnStructureStubInfo()
+{
+}
+
+StructureStubClearingWatchpoint* WatchpointsOnStructureStubInfo::addWatchpoint()
+{
+    return StructureStubClearingWatchpoint::push(*this, m_head);
+}
+
+StructureStubClearingWatchpoint* WatchpointsOnStructureStubInfo::ensureReferenceAndAddWatchpoint(
+    RefPtr<WatchpointsOnStructureStubInfo>& holderRef, CodeBlock* codeBlock,
+    StructureStubInfo* stubInfo)
+{
+    if (!holderRef)
+        holderRef = adoptRef(new WatchpointsOnStructureStubInfo(codeBlock, stubInfo));
+    else {
+        ASSERT(holderRef->m_codeBlock == codeBlock);
+        ASSERT(holderRef->m_stubInfo == stubInfo);
+    }
+    
+    return holderRef->addWatchpoint();
+}
+
+} // namespace JSC
+
+#endif // ENABLE(JIT)
+