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/*
* Copyright (C) 2018 Sony Interactive Entertainment Inc.
*
* 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.
*/
#include "config.h"
#include "NetworkCacheIOChannel.h"
#include <wtf/RunLoop.h>
namespace WebKit {
namespace NetworkCache {
IOChannel::IOChannel(const String& filePath, Type type, std::optional<WorkQueue::QOS>)
{
FileSystem::FileOpenMode mode { };
switch (type) {
case Type::Read:
mode = FileSystem::FileOpenMode::Read;
break;
case Type::Write:
mode = FileSystem::FileOpenMode::ReadWrite;
break;
case Type::Create:
mode = FileSystem::FileOpenMode::ReadWrite;
break;
}
Locker locker { m_lock };
m_fileDescriptor = FileSystem::openFile(filePath, mode);
}
IOChannel::~IOChannel()
{
Locker locker { m_lock };
FileSystem::closeFile(m_fileDescriptor);
}
void IOChannel::read(size_t offset, size_t size, Ref<WTF::WorkQueueBase>&& queue, Function<void(Data&&, int error)>&& completionHandler)
{
queue->dispatch([this, protectedThis = Ref { *this }, offset, size, completionHandler = WTFMove(completionHandler)] {
m_lock.lock();
auto fileSize = FileSystem::fileSize(m_fileDescriptor);
if (!fileSize || *fileSize > std::numeric_limits<size_t>::max()) {
m_lock.unlock();
return completionHandler(Data { }, -1);
}
size_t readSize = *fileSize;
readSize = std::min(size, readSize);
Vector<uint8_t> buffer(readSize);
FileSystem::seekFile(m_fileDescriptor, offset, FileSystem::FileSeekOrigin::Beginning);
int err = FileSystem::readFromFile(m_fileDescriptor, buffer.mutableSpan());
m_lock.unlock();
err = err < 0 ? err : 0;
auto data = Data(WTFMove(buffer));
completionHandler(WTFMove(data), err);
});
}
void IOChannel::write(size_t offset, const Data& data, Ref<WTF::WorkQueueBase>&& queue, Function<void(int error)>&& completionHandler)
{
queue->dispatch([this, protectedThis = Ref { *this }, offset, data, completionHandler = WTFMove(completionHandler)] {
int err = 0;
{
Locker locker { m_lock };
FileSystem::seekFile(m_fileDescriptor, offset, FileSystem::FileSeekOrigin::Beginning);
err = FileSystem::writeToFile(m_fileDescriptor, data.span());
err = err < 0 ? err : 0;
}
completionHandler(err);
});
}
} // namespace NetworkCache
} // namespace WebKit
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