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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
// Copyright (c) 2011-2012 Ryan Prichard
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
#ifndef NAMEDPIPE_H
#define NAMEDPIPE_H
#include <windows.h>
#include <memory>
#include <string>
#include <vector>
#include "../shared/OwnedHandle.h"
class EventLoop;
class NamedPipe
{
private:
// The EventLoop uses these private members.
friend class EventLoop;
NamedPipe() {}
~NamedPipe() { closePipe(); }
bool serviceIo(std::vector<HANDLE> *waitHandles);
void startPipeWorkers();
enum class ServiceResult { NoProgress, Error, Progress };
private:
class IoWorker
{
public:
IoWorker(NamedPipe &namedPipe);
virtual ~IoWorker() {}
ServiceResult service();
void waitForCanceledIo();
HANDLE getWaitEvent();
protected:
NamedPipe &m_namedPipe;
bool m_pending = false;
DWORD m_currentIoSize = 0;
OwnedHandle m_event;
OVERLAPPED m_over = {};
enum { kIoSize = 64 * 1024 };
char m_buffer[kIoSize];
virtual void completeIo(DWORD size) = 0;
virtual bool shouldIssueIo(DWORD *size, bool *isRead) = 0;
};
class InputWorker : public IoWorker
{
public:
InputWorker(NamedPipe &namedPipe) : IoWorker(namedPipe) {}
protected:
virtual void completeIo(DWORD size) override;
virtual bool shouldIssueIo(DWORD *size, bool *isRead) override;
};
class OutputWorker : public IoWorker
{
public:
OutputWorker(NamedPipe &namedPipe) : IoWorker(namedPipe) {}
DWORD getPendingIoSize();
protected:
virtual void completeIo(DWORD size) override;
virtual bool shouldIssueIo(DWORD *size, bool *isRead) override;
};
public:
struct OpenMode {
typedef int t;
enum { None = 0, Reading = 1, Writing = 2, Duplex = 3 };
};
std::wstring name() const { return m_name; }
void openServerPipe(LPCWSTR pipeName, OpenMode::t openMode,
int outBufferSize, int inBufferSize);
void connectToServer(LPCWSTR pipeName, OpenMode::t openMode);
size_t bytesToSend();
void write(const void *data, size_t size);
void write(const char *text);
size_t readBufferSize();
void setReadBufferSize(size_t size);
size_t bytesAvailable();
size_t peek(void *data, size_t size);
size_t read(void *data, size_t size);
std::string readToString(size_t size);
std::string readAllToString();
void closePipe();
bool isClosed() { return m_handle == nullptr; }
bool isConnected() { return !isClosed() && !isConnecting(); }
bool isConnecting() { return m_connectEvent.get() != nullptr; }
private:
// Input/output buffers
std::wstring m_name;
OVERLAPPED m_connectOver = {};
OwnedHandle m_connectEvent;
OpenMode::t m_openMode = OpenMode::None;
size_t m_readBufferSize = 64 * 1024;
std::string m_inQueue;
std::string m_outQueue;
HANDLE m_handle = nullptr;
std::unique_ptr<InputWorker> m_inputWorker;
std::unique_ptr<OutputWorker> m_outputWorker;
};
#endif // NAMEDPIPE_H
|
