blob: e8e796eb19bf1c7091ca27994f0d69d074aa8f54 (
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
|
/*
* thread.h: A simple thread base class
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: thread.h 1.8 2001/08/05 10:36:47 kls Exp $
*/
#ifndef __THREAD_H
#define __THREAD_H
#include <pthread.h>
#include <sys/types.h>
class cMutex;
class cCondVar {
private:
pthread_cond_t cond;
public:
cCondVar(void);
~cCondVar();
bool Wait(cMutex &Mutex);
//bool TimedWait(cMutex &Mutex, unsigned long tmout);
void Broadcast(void);
//void Signal(void);
};
class cMutex {
friend class cCondVar;
private:
pthread_mutex_t mutex;
pid_t lockingPid;
int locked;
public:
cMutex(void);
~cMutex();
void Lock(void);
void Unlock(void);
};
class cThread {
friend class cThreadLock;
private:
pthread_t thread;
cMutex Mutex;
pid_t parentPid, threadPid, lockingPid;
int locked;
bool running;
static time_t lastPanic;
static int panicLevel;
static bool emergencyExitRequested;
static bool signalHandlerInstalled;
static void SignalHandler(int signum);
static void *StartThread(cThread *Thread);
bool Lock(void);
void Unlock(void);
protected:
void WakeUp(void);
virtual void Action(void) = 0;
void Cancel(int WaitSeconds = 0);
public:
cThread(void);
virtual ~cThread();
bool Start(void);
bool Active(void);
static void RaisePanic(void);
static bool EmergencyExit(bool Request = false);
};
// cThreadLock can be used to easily set a lock in a thread and make absolutely
// sure that it will be unlocked when the block will be left. Several locks can
// be stacked, so a function that makes many calls to another function which uses
// cThreadLock may itself use a cThreadLock to make one longer lock instead of many
// short ones.
class cThreadLock {
private:
cThread *thread;
bool locked;
public:
cThreadLock(cThread *Thread = NULL);
~cThreadLock();
bool Lock(cThread *Thread);
bool Locked(void);
};
#define LOCK_THREAD cThreadLock ThreadLock(this)
#endif //__THREAD_H
|
