JavaScriptCore-1097.3.tar.gz

[apple/javascriptcore.git] / wtf / StackBounds.h

diff --git a/wtf/StackBounds.h b/wtf/StackBounds.h
deleted file mode 100644 (file)
index dc93f90..0000000
--- a/wtf/StackBounds.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright (C) 2010 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 COMPUTER, 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 COMPUTER, 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. 
- *
- */
-
-#ifndef StackBounds_h
-#define StackBounds_h
-
-namespace WTF {
-
-class StackBounds {
-    // recursionCheck() / recursionLimit() tests (by default)
-    // that we are at least this far from the end of the stack.
-    const static size_t s_defaultAvailabilityDelta = 4096;
-
-public:
-    StackBounds()
-        : m_origin(0)
-        , m_bound(0)
-    {
-    }
-
-    static StackBounds currentThreadStackBounds()
-    {
-        StackBounds bounds;
-        bounds.initialize();
-        bounds.checkConsistency();
-        return bounds;
-    }
-
-    void* origin() const
-    {
-        ASSERT(m_origin);
-        return m_origin;
-    }
-
-    void* current() const
-    {
-        checkConsistency();
-        void* currentPosition = &currentPosition;
-        return currentPosition;
-    }
-
-    void* recursionLimit(size_t minAvailableDelta = s_defaultAvailabilityDelta) const
-    {
-        checkConsistency();
-        return isGrowingDownward()
-            ? static_cast<char*>(m_bound) + minAvailableDelta
-            : static_cast<char*>(m_bound) - minAvailableDelta;
-    }
-
-    bool recursionCheck(size_t minAvailableDelta = s_defaultAvailabilityDelta) const
-    {
-        checkConsistency();
-        return isGrowingDownward()
-            ? current() >= recursionLimit(minAvailableDelta)
-            : current() <= recursionLimit(minAvailableDelta);
-    }
-
-private:
-    void initialize();
-
-
-    bool isGrowingDownward() const
-    {
-        ASSERT(m_origin && m_bound);
-#if OS(WINCE)
-        return m_origin > m_bound;
-#else
-        return true;
-#endif
-    }
-
-    void checkConsistency() const;
-
-    void* m_origin;
-    void* m_bound;
-};
-
-} // namespace WTF
-
-using WTF::StackBounds;
-
-#endif