forked from endurodave/StdWorkerThread
-
Notifications
You must be signed in to change notification settings - Fork 0
/
WorkerThread.cpp
169 lines (140 loc) · 4.38 KB
/
WorkerThread.cpp
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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
#include "WorkerThread.h"
#include "Fault.h"
#include <iostream>
using namespace std;
#define MSG_EXIT_THREAD 1
#define MSG_POST_USER_DATA 2
#define MSG_TIMER 3
struct ThreadMsg
{
ThreadMsg(int i, std::shared_ptr<void> m) { id = i; msg = m; }
int id;
std::shared_ptr<void> msg;
};
//----------------------------------------------------------------------------
// WorkerThread
//----------------------------------------------------------------------------
WorkerThread::WorkerThread(const char* threadName) : m_thread(nullptr), m_timerExit(false), THREAD_NAME(threadName)
{
}
//----------------------------------------------------------------------------
// ~WorkerThread
//----------------------------------------------------------------------------
WorkerThread::~WorkerThread()
{
ExitThread();
}
//----------------------------------------------------------------------------
// CreateThread
//----------------------------------------------------------------------------
bool WorkerThread::CreateThread()
{
if (!m_thread)
m_thread = std::unique_ptr<std::thread>(new thread(&WorkerThread::Process, this));
return true;
}
//----------------------------------------------------------------------------
// GetThreadId
//----------------------------------------------------------------------------
std::thread::id WorkerThread::GetThreadId()
{
ASSERT_TRUE(m_thread != nullptr);
return m_thread->get_id();
}
//----------------------------------------------------------------------------
// GetCurrentThreadId
//----------------------------------------------------------------------------
std::thread::id WorkerThread::GetCurrentThreadId()
{
return this_thread::get_id();
}
//----------------------------------------------------------------------------
// ExitThread
//----------------------------------------------------------------------------
void WorkerThread::ExitThread()
{
if (!m_thread)
return;
// Create a new ThreadMsg
std::shared_ptr<ThreadMsg> threadMsg(new ThreadMsg(MSG_EXIT_THREAD, 0));
// Put exit thread message into the queue
{
lock_guard<mutex> lock(m_mutex);
m_queue.push(threadMsg);
m_cv.notify_one();
}
m_thread->join();
m_thread = nullptr;
}
//----------------------------------------------------------------------------
// PostMsg
//----------------------------------------------------------------------------
void WorkerThread::PostMsg(std::shared_ptr<UserData> data)
{
ASSERT_TRUE(m_thread);
// Create a new ThreadMsg
std::shared_ptr<ThreadMsg> threadMsg(new ThreadMsg(MSG_POST_USER_DATA, data));
// Add user data msg to queue and notify worker thread
std::unique_lock<std::mutex> lk(m_mutex);
m_queue.push(threadMsg);
m_cv.notify_one();
}
//----------------------------------------------------------------------------
// TimerThread
//----------------------------------------------------------------------------
void WorkerThread::TimerThread()
{
while (!m_timerExit)
{
// Sleep for 250mS then put a MSG_TIMER into the message queue
std::this_thread::sleep_for(250ms);
std::shared_ptr<ThreadMsg> threadMsg (new ThreadMsg(MSG_TIMER, 0));
// Add timer msg to queue and notify worker thread
std::unique_lock<std::mutex> lk(m_mutex);
m_queue.push(threadMsg);
m_cv.notify_one();
}
}
//----------------------------------------------------------------------------
// Process
//----------------------------------------------------------------------------
void WorkerThread::Process()
{
m_timerExit = false;
std::thread timerThread(&WorkerThread::TimerThread, this);
while (1)
{
std::shared_ptr<ThreadMsg> msg;
{
// Wait for a message to be added to the queue
std::unique_lock<std::mutex> lk(m_mutex);
while (m_queue.empty())
m_cv.wait(lk);
if (m_queue.empty())
continue;
msg = m_queue.front();
m_queue.pop();
}
switch (msg->id)
{
case MSG_POST_USER_DATA:
{
ASSERT_TRUE(msg->msg != NULL);
auto userData = std::static_pointer_cast<UserData>(msg->msg);
cout << userData->msg.c_str() << " " << userData->year << " on " << THREAD_NAME << endl;
break;
}
case MSG_TIMER:
cout << "Timer expired on " << THREAD_NAME << endl;
break;
case MSG_EXIT_THREAD:
{
m_timerExit = true;
timerThread.join();
return;
}
default:
ASSERT();
}
}
}