1 files changed, 0 insertions, 160 deletions
diff --git a/Source/JavaScriptCore/interpreter/JSStack.cpp b/Source/JavaScriptCore/interpreter/JSStack.cpp
deleted file mode 100644
index 8b73d3cc9..000000000
--- a/Source/JavaScriptCore/interpreter/JSStack.cpp
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * Copyright (C) 2008, 2013 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 Computer, 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 "JSStackInlines.h"
-
-#include "ConservativeRoots.h"
-#include "Interpreter.h"
-#include <wtf/PageBlock.h>
-
-namespace JSC {
-
-static size_t committedBytesCount = 0;
-
-static Mutex& stackStatisticsMutex()
-{
-    DEFINE_STATIC_LOCAL(Mutex, staticMutex, ());
-    return staticMutex;
-}    
-
-static size_t commitSize()
-{
-    static size_t size = 0;
-    if (!size)
-        size = std::max(16 * 1024, static_cast<int>(WTF::pageSize()));
-    return size;
-}
-
-JSStack::JSStack(VM& vm, size_t capacity)
-    : m_vm(vm)
-    , m_end(0)
-    , m_topCallFrame(vm.topCallFrame)
-{
-    ASSERT(capacity && isPageAligned(capacity));
-
-    m_reservation = PageReservation::reserve(roundUpAllocationSize(capacity * sizeof(Register), commitSize()), OSAllocator::JSVMStackPages);
-    updateStackLimit(highAddress());
-    m_commitEnd = highAddress();
-
-    disableErrorStackReserve();
-
-    m_topCallFrame = 0;
-}
-
-JSStack::~JSStack()
-{
-    void* highAddress = reinterpret_cast<void*>(static_cast<char*>(m_reservation.base()) + m_reservation.size());
-    m_reservation.decommit(reinterpret_cast<void*>(m_commitEnd), reinterpret_cast<intptr_t>(highAddress) - reinterpret_cast<intptr_t>(m_commitEnd));
-    addToCommittedByteCount(-(reinterpret_cast<intptr_t>(highAddress) - reinterpret_cast<intptr_t>(m_commitEnd)));
-    m_reservation.deallocate();
-}
-
-bool JSStack::growSlowCase(Register* newEnd)
-{
-    // If we have already committed enough memory to satisfy this request,
-    // just update the end pointer and return.
-    if (newEnd >= m_commitEnd) {
-        updateStackLimit(newEnd);
-        return true;
-    }
-
-    // Compute the chunk size of additional memory to commit, and see if we
-    // have it is still within our budget. If not, we'll fail to grow and
-    // return false.
-    long delta = roundUpAllocationSize(reinterpret_cast<char*>(m_commitEnd) - reinterpret_cast<char*>(newEnd), commitSize());
-    if (reinterpret_cast<char*>(m_commitEnd) - delta <= reinterpret_cast<char*>(m_useableEnd))
-        return false;
-
-    // Otherwise, the growth is still within our budget. Go ahead and commit
-    // it and return true.
-    m_reservation.commit(reinterpret_cast<char*>(m_commitEnd) - delta, delta);
-    addToCommittedByteCount(delta);
-    m_commitEnd = reinterpret_cast_ptr<Register*>(reinterpret_cast<char*>(m_commitEnd) - delta);
-    updateStackLimit(newEnd);
-    return true;
-}
-
-void JSStack::gatherConservativeRoots(ConservativeRoots& conservativeRoots)
-{
-    conservativeRoots.add(getBaseOfStack(), getTopOfStack());
-}
-
-void JSStack::gatherConservativeRoots(ConservativeRoots& conservativeRoots, JITStubRoutineSet& jitStubRoutines, CodeBlockSet& codeBlocks)
-{
-    conservativeRoots.add(getBaseOfStack(), getTopOfStack(), jitStubRoutines, codeBlocks);
-}
-
-void JSStack::releaseExcessCapacity()
-{
-    ptrdiff_t delta = reinterpret_cast<uintptr_t>(highAddress()) - reinterpret_cast<uintptr_t>(m_commitEnd);
-    m_reservation.decommit(m_commitEnd, delta);
-    addToCommittedByteCount(-delta);
-    m_commitEnd = highAddress();
-}
-
-void JSStack::initializeThreading()
-{
-    stackStatisticsMutex();
-}
-
-size_t JSStack::committedByteCount()
-{
-    MutexLocker locker(stackStatisticsMutex());
-    return committedBytesCount;
-}
-
-void JSStack::addToCommittedByteCount(long byteCount)
-{
-    MutexLocker locker(stackStatisticsMutex());
-    ASSERT(static_cast<long>(committedBytesCount) + byteCount > -1);
-    committedBytesCount += byteCount;
-}
-
-void JSStack::enableErrorStackReserve()
-{
-    m_useableEnd = reservationEnd();
-}
-
-void JSStack::disableErrorStackReserve()
-{
-    char* useableEnd = reinterpret_cast<char*>(reservationEnd()) + commitSize();
-    m_useableEnd = reinterpret_cast_ptr<Register*>(useableEnd);
-
-    // By the time we get here, we are guaranteed to be destructing the last
-    // Interpreter::ErrorHandlingMode that enabled this reserve in the first
-    // place. That means the stack space beyond m_useableEnd before we
-    // enabled the reserve was not previously in use. Hence, it is safe to
-    // shrink back to that m_useableEnd.
-    if (m_end < m_useableEnd) {
-        ASSERT(m_topCallFrame->frameExtent() >= m_useableEnd);
-        shrink(m_useableEnd);
-    }
-}
-
-} // namespace JSC