blob: b1bca0fa0d86ce1104c500dc87f7e9a0ea9bd449 (
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
|
// --------------------------------------------------------------------------
//
// File
// Name: Guards.h
// Purpose: Classes which ensure things are closed/deleted properly when
// going out of scope. Easy exception proof code, etc
// Created: 2003/07/12
//
// --------------------------------------------------------------------------
#ifndef GUARDS__H
#define GUARDS__H
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <new>
#include "CommonException.h"
#include "MemLeakFindOn.h"
template <int flags = O_RDONLY | O_BINARY, int mode = (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)>
class FileHandleGuard
{
public:
FileHandleGuard(const char *filename)
: mOSFileHandle(::open(filename, flags, mode))
{
if(mOSFileHandle < 0)
{
THROW_EXCEPTION(CommonException, OSFileOpenError)
}
}
~FileHandleGuard()
{
if(mOSFileHandle >= 0)
{
Close();
}
}
void Close()
{
if(mOSFileHandle < 0)
{
THROW_EXCEPTION(CommonException, FileAlreadyClosed)
}
if(::close(mOSFileHandle) != 0)
{
THROW_EXCEPTION(CommonException, OSFileCloseError)
}
mOSFileHandle = -1;
}
operator int() const
{
return mOSFileHandle;
}
private:
int mOSFileHandle;
};
template<typename type>
class MemoryBlockGuard
{
public:
MemoryBlockGuard(int BlockSize)
: mpBlock(::malloc(BlockSize))
{
if(mpBlock == 0)
{
throw std::bad_alloc();
}
}
~MemoryBlockGuard()
{
free(mpBlock);
}
operator type() const
{
return (type)mpBlock;
}
type GetPtr() const
{
return (type)mpBlock;
}
void Resize(int NewSize)
{
void *ptrn = ::realloc(mpBlock, NewSize);
if(ptrn == 0)
{
throw std::bad_alloc();
}
mpBlock = ptrn;
}
private:
void *mpBlock;
};
#include "MemLeakFindOff.h"
#endif // GUARDS__H
|
