mirror of
https://github.com/Samsung/escargot.git
synced 2026-06-22 10:01:50 +00:00
2c386d65b0
* check_tidy script has been fixed to print only format errors Signed-off-by: HyukWoo Park <hyukwoo.park@samsung.com>
91 lines
3 KiB
C++
91 lines
3 KiB
C++
/*
|
|
* 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 INC. 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 INC. 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.
|
|
*/
|
|
|
|
#ifndef ESCARGOT
|
|
#include "config.h"
|
|
#include "OSAllocator.h"
|
|
|
|
#include "PageAllocation.h"
|
|
#include <errno.h>
|
|
#include <sys/mman.h>
|
|
#include <wtf/Assertions.h>
|
|
#include <wtf/UnusedParam.h>
|
|
#else
|
|
#include "Escargot.h"
|
|
#include "OSAllocator.h"
|
|
#include "PageAllocation.h"
|
|
#endif
|
|
|
|
#if defined(OS_WINDOWS)
|
|
|
|
namespace WTF {
|
|
|
|
static inline DWORD protection(bool writable, bool executable)
|
|
{
|
|
return executable ? (writable ? PAGE_EXECUTE_READWRITE : PAGE_EXECUTE_READ) : (writable ? PAGE_READWRITE : PAGE_READONLY);
|
|
}
|
|
|
|
void* OSAllocator::reserveUncommitted(size_t bytes, Usage, bool writable, bool executable, bool includesGuardPages)
|
|
{
|
|
void* result = VirtualAlloc(0, bytes, MEM_RESERVE, protection(writable, executable));
|
|
if (!result)
|
|
CRASH();
|
|
return result;
|
|
}
|
|
|
|
void* OSAllocator::reserveAndCommit(size_t bytes, Usage, bool writable, bool executable, bool includesGuardPages)
|
|
{
|
|
void* result = VirtualAlloc(0, bytes, MEM_RESERVE | MEM_COMMIT, protection(writable, executable));
|
|
if (!result)
|
|
CRASH();
|
|
return result;
|
|
}
|
|
|
|
void OSAllocator::commit(void* address, size_t bytes, bool writable, bool executable)
|
|
{
|
|
void* result = VirtualAlloc(address, bytes, MEM_COMMIT, protection(writable, executable));
|
|
if (!result)
|
|
CRASH();
|
|
}
|
|
|
|
void OSAllocator::decommit(void* address, size_t bytes)
|
|
{
|
|
bool result = VirtualFree(address, bytes, MEM_DECOMMIT);
|
|
if (!result)
|
|
CRASH();
|
|
}
|
|
|
|
void OSAllocator::releaseDecommitted(void* address, size_t bytes)
|
|
{
|
|
// According to http://msdn.microsoft.com/en-us/library/aa366892(VS.85).aspx,
|
|
// dwSize must be 0 if dwFreeType is MEM_RELEASE.
|
|
bool result = VirtualFree(address, 0, MEM_RELEASE);
|
|
if (!result)
|
|
CRASH();
|
|
}
|
|
|
|
} // namespace WTF
|
|
|
|
#endif
|