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Copy pathfile_write_operation.hpp
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184 lines (139 loc) · 4.63 KB
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///////////////////////////////////////////////////////////////////////////////
// Copyright (c) Lewis Baker
// Licenced under MIT license. See LICENSE.txt for details.
///////////////////////////////////////////////////////////////////////////////
#ifndef CPPCORO_FILE_WRITE_OPERATION_HPP_INCLUDED
#define CPPCORO_FILE_WRITE_OPERATION_HPP_INCLUDED
#include <cppcoro/config.hpp>
#include <cppcoro/cancellation_registration.hpp>
#include <cppcoro/cancellation_token.hpp>
#include <atomic>
#include <optional>
#if CPPCORO_OS_WINNT
# include <cppcoro/detail/win32.hpp>
# include <cppcoro/detail/win32_overlapped_operation.hpp>
#elif CPPCORO_OS_LINUX
# include <cppcoro/detail/linux.hpp>
# include <cppcoro/detail/linux_async_operation.hpp>
#endif
namespace cppcoro
{
#if CPPCORO_OS_WINNT
class file_write_operation_impl
{
public:
file_write_operation_impl(
detail::win32::handle_t fileHandle,
const void* buffer,
std::size_t byteCount) noexcept
: m_fileHandle(fileHandle)
, m_buffer(buffer)
, m_byteCount(byteCount)
{}
bool try_start(cppcoro::detail::win32_overlapped_operation_base& operation) noexcept;
void cancel(cppcoro::detail::win32_overlapped_operation_base& operation) noexcept;
private:
detail::win32::handle_t m_fileHandle;
const void* m_buffer;
std::size_t m_byteCount;
};
class file_write_operation
: public cppcoro::detail::win32_overlapped_operation<file_write_operation>
{
public:
file_write_operation(
detail::win32::handle_t fileHandle,
std::uint64_t fileOffset,
const void* buffer,
std::size_t byteCount) noexcept
: cppcoro::detail::win32_overlapped_operation<file_write_operation>(fileOffset)
, m_impl(fileHandle, buffer, byteCount)
{}
private:
friend class cppcoro::detail::win32_overlapped_operation<file_write_operation>;
bool try_start() noexcept { return m_impl.try_start(*this); }
file_write_operation_impl m_impl;
};
class file_write_operation_cancellable
: public cppcoro::detail::win32_overlapped_operation_cancellable<file_write_operation_cancellable>
{
public:
file_write_operation_cancellable(
detail::win32::handle_t fileHandle,
std::uint64_t fileOffset,
const void* buffer,
std::size_t byteCount,
cancellation_token&& ct) noexcept
: cppcoro::detail::win32_overlapped_operation_cancellable<file_write_operation_cancellable>(fileOffset, std::move(ct))
, m_impl(fileHandle, buffer, byteCount)
{}
private:
friend class cppcoro::detail::win32_overlapped_operation_cancellable<file_write_operation_cancellable>;
bool try_start() noexcept { return m_impl.try_start(*this); }
void cancel() noexcept { m_impl.cancel(*this); }
file_write_operation_impl m_impl;
};
#elif CPPCORO_OS_LINUX
class file_write_operation_impl
{
public:
file_write_operation_impl(
int fd,
std::uint64_t fileOffset,
const void* buffer,
std::size_t byteCount) noexcept
: m_fd(fd)
, m_offset(fileOffset)
, m_buffer(buffer)
, m_byteCount(byteCount)
{}
bool try_start(cppcoro::detail::linux_async_operation_base& operation) noexcept;
void cancel(cppcoro::detail::linux_async_operation_base& operation) noexcept;
private:
int m_fd;
std::uint64_t m_offset;
const void* m_buffer;
std::size_t m_byteCount;
};
class file_write_operation
: public cppcoro::detail::linux_async_operation<file_write_operation>
{
public:
file_write_operation(
int fd,
detail::linux::message_queue* mq,
std::uint64_t fileOffset,
const void* buffer,
std::size_t byteCount) noexcept
: cppcoro::detail::linux_async_operation<file_write_operation>(mq)
, m_impl(fd, fileOffset, buffer, byteCount)
{}
private:
friend class cppcoro::detail::linux_async_operation<file_write_operation>;
bool try_start() noexcept { return m_impl.try_start(*this); }
file_write_operation_impl m_impl;
};
class file_write_operation_cancellable
: public cppcoro::detail::linux_async_operation_cancellable<file_write_operation_cancellable>
{
public:
file_write_operation_cancellable(
int fd,
detail::linux::message_queue* mq,
std::uint64_t fileOffset,
const void* buffer,
std::size_t byteCount,
cancellation_token&& ct) noexcept
: cppcoro::detail::linux_async_operation_cancellable<file_write_operation_cancellable>(
mq, std::move(ct))
, m_impl(fd, fileOffset, buffer, byteCount)
{}
private:
friend class cppcoro::detail::linux_async_operation_cancellable<file_write_operation_cancellable>;
bool try_start() noexcept { return m_impl.try_start(*this); }
void cancel() noexcept { m_impl.cancel(*this); }
file_write_operation_impl m_impl;
};
#endif
}
#endif