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
|
/*
* This file is part of nzbget. See <http://nzbget.net>.
*
* Copyright (C) 2004 Sven Henkel <sidddy@users.sourceforge.net>
* Copyright (C) 2007-2019 Andrey Prygunkov <hugbug@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef THREAD_H
#define THREAD_H
class Mutex
{
public:
Mutex() {};
Mutex(const Mutex&) = delete;
void Lock() { m_mutexObj.lock(); }
void Unlock() { m_mutexObj.unlock(); }
private:
std::mutex m_mutexObj;
friend class ConditionVar;
};
class Guard
{
public:
Guard() : m_mutex(nullptr) {}
Guard(Mutex& mutex) : m_mutex(&mutex) { if (m_mutex) m_mutex->Lock(); }
Guard(Mutex* mutex) : m_mutex(mutex) { if (m_mutex) m_mutex->Lock(); }
Guard(std::unique_ptr<Mutex>& mutex) : m_mutex(mutex.get()) { if (m_mutex) m_mutex->Lock(); }
Guard(Guard&& other) : m_mutex(other.m_mutex) { other.m_mutex = nullptr; }
Guard(const Guard&) = delete;
~Guard() { Unlock(); }
Guard& operator=(Guard&& other) { m_mutex = other.m_mutex; other.m_mutex = nullptr; return *this; }
operator bool() { return m_mutex; }
private:
Mutex* m_mutex;
void Unlock() { if (m_mutex) { m_mutex->Unlock(); m_mutex = nullptr; } }
};
template<typename T>
class GuardedPtr
{
public:
GuardedPtr(T* ptr, Mutex* mutex) : m_ptr(ptr), m_mutex(mutex) { if (m_mutex) m_mutex->Lock(); }
GuardedPtr(GuardedPtr&& other) : m_ptr(other.m_ptr), m_mutex(other.m_mutex) { other.m_mutex = nullptr; }
GuardedPtr(const GuardedPtr& other) = delete;
~GuardedPtr() { Unlock(); }
T* operator->() { return m_ptr; }
operator T*() { return m_ptr; }
// for-range loops on GuardedPtr
auto begin() { return m_ptr->begin(); }
auto end() { return m_ptr->end(); }
private:
T* m_ptr;
Mutex* m_mutex;
void Unlock() { if (m_mutex) { m_mutex->Unlock(); m_mutex = nullptr; } }
};
class ConditionVar
{
public:
ConditionVar() {}
ConditionVar(const ConditionVar& other) = delete;
void Wait(Mutex& mutex) { Lock l(mutex); m_condObj.wait(l); }
template <typename Pred> void Wait(Mutex& mutex, Pred pred) { Lock l(mutex); m_condObj.wait(l, pred); }
void WaitFor(Mutex& mutex, int msec) { Lock l(mutex); m_condObj.wait_for(l, std::chrono::milliseconds(msec)); }
template <typename Pred> void WaitFor(Mutex& mutex, int msec, Pred pred)
{ Lock l(mutex); m_condObj.wait_for(l, std::chrono::milliseconds(msec), pred); }
void NotifyOne() { m_condObj.notify_one(); }
void NotifyAll() { m_condObj.notify_all(); }
private:
std::condition_variable m_condObj;
struct Lock : public std::unique_lock<std::mutex>
{
Lock(Mutex& mutex) : std::unique_lock<std::mutex>(mutex.m_mutexObj, std::adopt_lock) {}
~Lock() { release(); }
};
};
class Thread
{
public:
Thread();
Thread(const Thread&) = delete;
virtual ~Thread();
static void Init();
virtual void Start();
virtual void Stop();
virtual void Resume();
bool Kill();
bool IsStopped() { return m_stopped; };
bool IsRunning() const { return m_running; }
bool GetAutoDestroy() { return m_autoDestroy; }
void SetAutoDestroy(bool autoDestroy) { m_autoDestroy = autoDestroy; }
static int GetThreadCount();
protected:
virtual void Run() {}; // Virtual function - override in derivatives
private:
static std::unique_ptr<Mutex> m_threadMutex;
static int m_threadCount;
std::thread::native_handle_type m_threadObj = 0;
bool m_running = false;
bool m_stopped = false;
bool m_autoDestroy = false;
void thread_handler();
};
#endif
|
