blob: 9e30aff86e1b39ee5f359118c980ea32a044bfdd (
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
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Utility functions to help with Apple API calls.
#ifndef mozilla_AppleUtils_h
#define mozilla_AppleUtils_h
#include "mozilla/Attributes.h"
namespace mozilla {
// Wrapper class to call CFRelease on reference types
// when they go out of scope.
template <class T>
class AutoCFRelease {
public:
MOZ_IMPLICIT AutoCFRelease(T aRef)
: mRef(aRef)
{
}
~AutoCFRelease()
{
if (mRef) {
CFRelease(mRef);
}
}
// Return the wrapped ref so it can be used as an in parameter.
operator T()
{
return mRef;
}
// Return a pointer to the wrapped ref for use as an out parameter.
T* receive()
{
return &mRef;
}
private:
// Copy operator isn't supported and is not implemented.
AutoCFRelease<T>& operator=(const AutoCFRelease<T>&);
T mRef;
};
// CFRefPtr: A CoreFoundation smart pointer.
template <class T>
class CFRefPtr {
public:
explicit CFRefPtr(T aRef)
: mRef(aRef)
{
if (mRef) {
CFRetain(mRef);
}
}
// Copy constructor.
CFRefPtr(const CFRefPtr<T>& aCFRefPtr)
: mRef(aCFRefPtr.mRef)
{
if (mRef) {
CFRetain(mRef);
}
}
// Copy operator
CFRefPtr<T>& operator=(const CFRefPtr<T>& aCFRefPtr)
{
if (mRef == aCFRefPtr.mRef) {
return;
}
if (mRef) {
CFRelease(mRef);
}
mRef = aCFRefPtr.mRef;
if (mRef) {
CFRetain(mRef);
}
return *this;
}
~CFRefPtr()
{
if (mRef) {
CFRelease(mRef);
}
}
// Return the wrapped ref so it can be used as an in parameter.
operator T()
{
return mRef;
}
private:
T mRef;
};
} // namespace mozilla
#endif // mozilla_AppleUtils_h
|
