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
|
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include "postal.h"
#include "mutex.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
Mutex::Mutex(bool
#ifdef LINUX_PTHREAD
fastMutex
#endif
)
{
int rc;
#ifdef LINUX_PTHREAD
if(!fastMutex)
{
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
if(!rc)
rc = pthread_mutex_init(&m_mut, &attr);
pthread_mutexattr_destroy(&attr);
}
else
#endif
{
rc = pthread_mutex_init(&m_mut, NULL);
}
if(rc)
{
fprintf(stderr, "Can't create mutex.\n");
exit(1);
}
}
Mutex::~Mutex()
{
pthread_mutex_destroy(&m_mut);
}
int Mutex::get_mutex(bool block)
{
if(block)
{
if(pthread_mutex_lock(&m_mut))
return -1;
}
else
{
if(pthread_mutex_trylock(&m_mut))
return -1;
}
return 0;
}
int Mutex::put_mutex()
{
if(pthread_mutex_unlock(&m_mut))
return -1;
return 0;
}
Lock::Lock(Mutex &mut)
: m_mut(mut)
{
if(m_mut.get_mutex())
{
perror("");
fprintf(stderr, "Can't lock mutex.\n");
exit(1);
}
}
Lock::~Lock()
{
if(m_mut.put_mutex())
{
fprintf(stderr, "Can't unlock mutex.\n");
exit(1);
}
}
|
