webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 67 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/JSEnvironmentRecord.cpp b/Source/JavaScriptCore/runtime/JSEnvironmentRecord.cpp
new file mode 100644
index 000000000..8807c4276
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/JSEnvironmentRecord.cpp
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+/*
+ * Copyright (C) 2007, 2008, 2012, 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. 
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "JSEnvironmentRecord.h"
+
+#include "HeapSnapshotBuilder.h"
+#include "JSCInlines.h"
+
+namespace JSC {
+
+const ClassInfo JSEnvironmentRecord::s_info = { "EnvironmentRecord", &Base::s_info, 0, CREATE_METHOD_TABLE(JSEnvironmentRecord) };
+
+void JSEnvironmentRecord::visitChildren(JSCell* cell, SlotVisitor& visitor)
+{
+    JSEnvironmentRecord* thisObject = jsCast<JSEnvironmentRecord*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
+    Base::visitChildren(thisObject, visitor);
+    visitor.appendValuesHidden(thisObject->variables(), thisObject->symbolTable()->scopeSize());
+}
+
+void JSEnvironmentRecord::heapSnapshot(JSCell* cell, HeapSnapshotBuilder& builder)
+{
+    JSEnvironmentRecord* thisObject = jsCast<JSEnvironmentRecord*>(cell);
+    Base::heapSnapshot(cell, builder);
+
+    ConcurrentJSLocker locker(thisObject->symbolTable()->m_lock);
+    SymbolTable::Map::iterator end = thisObject->symbolTable()->end(locker);
+    for (SymbolTable::Map::iterator it = thisObject->symbolTable()->begin(locker); it != end; ++it) {
+        SymbolTableEntry::Fast entry = it->value;
+        ASSERT(!entry.isNull());
+        ScopeOffset offset = entry.scopeOffset();
+        if (!thisObject->isValidScopeOffset(offset))
+            continue;
+
+        JSValue toValue = thisObject->variableAt(offset).get();
+        if (toValue && toValue.isCell())
+            builder.appendVariableNameEdge(thisObject, toValue.asCell(), it->key.get());
+    }
+}
+
+} // namespace JSC