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/*
* Copyright (C) 2015 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.
*/
#pragma once
#include "NetworkCacheData.h"
#include <wtf/Function.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/WorkQueue.h>
#include <wtf/text/WTFString.h>
#if USE(GLIB)
#include <wtf/glib/GRefPtr.h>
typedef struct _GInputStream GInputStream;
typedef struct _GOutputStream GOutputStream;
#endif
namespace WebKit {
namespace NetworkCache {
class IOChannel : public ThreadSafeRefCounted<IOChannel> {
public:
enum class Type { Read, Write, Create };
static Ref<IOChannel> open(String&& file, Type type, std::optional<WorkQueue::QOS> qos = { }) { return adoptRef(*new IOChannel(WTFMove(file).isolatedCopy(), type, qos)); }
// Using nullptr as queue submits the result to the main queue.
// FIXME: We should add WorkQueue::main() instead.
// Can be used with either a concurrent WorkQueue or a serial one.
void read(size_t offset, size_t, WTF::WorkQueueBase&, Function<void(Data&, int error)>&&);
void write(size_t offset, const Data&, WTF::WorkQueueBase&, Function<void(int error)>&&);
const String& path() const { return m_path; }
Type type() const { return m_type; }
#if !USE(GLIB)
bool isOpened() const { return FileSystem::isHandleValid(m_fileDescriptor); }
#else
bool isOpened() const { return m_inputStream || m_outputStream; }
#endif
~IOChannel();
private:
IOChannel(String&& filePath, IOChannel::Type, std::optional<WorkQueue::QOS>);
String m_path;
Type m_type;
#if !USE(GLIB)
FileSystem::PlatformFileHandle m_fileDescriptor { FileSystem::invalidPlatformFileHandle };
#endif
std::atomic<bool> m_wasDeleted { false }; // Try to narrow down a crash, https://bugs.webkit.org/show_bug.cgi?id=165659
#if PLATFORM(COCOA)
OSObjectPtr<dispatch_io_t> m_dispatchIO;
#endif
#if USE(GLIB)
GRefPtr<GInputStream> m_inputStream;
GRefPtr<GOutputStream> m_outputStream;
WorkQueue::QOS m_qos;
#endif
};
} // namespace NetworkCache
} // namespace WebKit
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