forked from lewissbaker/cppcoro
-
Notifications
You must be signed in to change notification settings - Fork 1
Expand file tree
/
Copy pathfile_write_operation.hpp
More file actions
99 lines (74 loc) · 2.59 KB
/
file_write_operation.hpp
File metadata and controls
99 lines (74 loc) · 2.59 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
///////////////////////////////////////////////////////////////////////////////
// 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>
#include <experimental/coroutine>
#if CPPCORO_OS_WINNT
# include <cppcoro/detail/win32.hpp>
# include <cppcoro/detail/win32_overlapped_operation.hpp>
namespace cppcoro
{
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;
};
}
#endif // CPPCORO_OS_WINNT
#endif