blob: 8c3e85b39c0fe82e39aa8c21f1223ab726a24888 [file] [log] [blame]
/*
* Copyright (C) 2019 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. ``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
* 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 "CachePayload.h"
#if !OS(WINDOWS)
#include <sys/mman.h>
#endif
namespace JSC {
#if !OS(WINDOWS)
CachePayload CachePayload::makeMappedPayload(void* data, size_t size)
{
return CachePayload(true, data, size);
}
#endif
CachePayload CachePayload::makeMallocPayload(MallocPtr<uint8_t>&& data, size_t size)
{
return CachePayload(false, data.leakPtr(), size);
}
CachePayload CachePayload::makeEmptyPayload()
{
return CachePayload(true, nullptr, 0);
}
CachePayload::CachePayload(CachePayload&& other)
{
m_mapped = other.m_mapped;
m_size = other.m_size;
m_data = other.m_data;
other.m_mapped = false;
other.m_data = nullptr;
other.m_size = 0;
}
CachePayload::~CachePayload()
{
freeData();
}
CachePayload& CachePayload::operator=(CachePayload&& other)
{
ASSERT(&other != this);
freeData();
return *new (this) CachePayload(WTFMove(other));
}
void CachePayload::freeData()
{
if (!m_data)
return;
if (m_mapped) {
#if !OS(WINDOWS)
munmap(m_data, m_size);
#else
RELEASE_ASSERT_NOT_REACHED();
#endif
} else
fastFree(m_data);
}
} // namespace JSC