blob: 8b5adb685f2adab3ea7837f2565f8ee8efc84500 (
plain)
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
|
/*
Copyright (C) 2009 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _H_THREADS
#define _H_THREADS
#include "pthread.h"
#include "atomic_count.h"
class Thread {
public:
typedef void* (*thread_main_t)(void*);
Thread(thread_main_t thread_main, void* opaque);
void join();
private:
pthread_t _thread;
};
class Mutex {
public:
enum Type {
NORMAL,
RECURSIVE,
};
Mutex(Type = NORMAL);
virtual ~Mutex();
private:
friend class Lock;
pthread_mutex_t* get() {return &_mutex;}
private:
pthread_mutex_t _mutex;
};
class Lock {
public:
Lock(Mutex& mutex)
: _locked (true)
, _mutex (mutex)
{
pthread_mutex_lock(_mutex.get());
}
Lock(Mutex& mutex, uint64_t timout_nano)
: _mutex (mutex)
{
if (!pthread_mutex_trylock(_mutex.get())) {
_locked = true;
return;
}
timed_lock(timout_nano);
}
~Lock()
{
unlock();
}
void unlock()
{
if (_locked) {
pthread_mutex_unlock(_mutex.get());
_locked = false;
}
}
bool is_locked() { return _locked;}
private:
friend class Condition;
pthread_mutex_t* get() {return _mutex.get();}
void timed_lock(uint64_t timout_nano);
private:
bool _locked;
Mutex& _mutex;
};
class RecurciveMutex: public Mutex {
public:
RecurciveMutex() : Mutex(Mutex::RECURSIVE) {}
};
typedef Lock RecurciveLock;
class Condition {
public:
Condition();
~Condition()
{
pthread_cond_destroy(&_condition);
}
void notify_one()
{
pthread_cond_signal(&_condition);
}
void notify_all()
{
pthread_cond_broadcast(&_condition);
}
void wait(Lock& lock)
{
pthread_cond_wait(&_condition, lock.get());
}
bool timed_wait(Lock& lock, uint64_t nano);
private:
pthread_cond_t _condition;
};
#endif
|
