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Bug 813007 - Remove ExecutableAllocatorSymbian.cpp r=billm
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/*
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* Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*
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*/
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#include "config.h"
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#include "ExecutableAllocator.h"
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#if ENABLE_ASSEMBLER && WTF_OS_SYMBIAN
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#include <e32hal.h>
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#include <e32std.h>
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// Set the page size to 256 Kb to compensate for moving memory model limitation
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const size_t MOVING_MEM_PAGE_SIZE = 256 * 1024;
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namespace JSC {
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size_t ExecutableAllocator::determinePageSize()
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{
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#if WTF_CPU_ARMV5_OR_LOWER
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// The moving memory model (as used in ARMv5 and earlier platforms)
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// on Symbian OS limits the number of chunks for each process to 16.
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// To mitigate this limitation increase the pagesize to
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// allocate less of larger chunks.
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return MOVING_MEM_PAGE_SIZE;
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#else
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TInt page_size;
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UserHal::PageSizeInBytes(page_size);
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return page_size;
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#endif
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}
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ExecutablePool::Allocation ExecutableAllocator::systemAlloc(size_t n)
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{
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RChunk* codeChunk = new RChunk();
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TInt errorCode = codeChunk->CreateLocalCode(n, n);
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char* allocation = reinterpret_cast<char*>(codeChunk->Base());
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ExecutablePool::Allocation alloc = { allocation, n, codeChunk };
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return alloc;
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}
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void ExecutableAllocator::systemRelease(const ExecutablePool::Allocation& alloc)
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{
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alloc.chunk->Close();
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delete alloc.chunk;
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}
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#if ENABLE_ASSEMBLER_WX_EXCLUSIVE
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#error "ASSEMBLER_WX_EXCLUSIVE not yet suported on this platform."
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#endif
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}
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#endif // HAVE(ASSEMBLER)
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