blob: 503980c3ef8c7b42fd0f61d01f1a3b5a1e161f81 (
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
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_MAC_SCOPED_IOPLUGININTERFACE_H_
#define BASE_MAC_SCOPED_IOPLUGININTERFACE_H_
#include <IOKit/IOKitLib.h>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
namespace base {
namespace mac {
// Just like ScopedCFTypeRef but for IOCFPlugInInterface and friends
// (IOUSBInterfaceStruct and IOUSBDeviceStruct320 in particular).
template<typename T>
class ScopedIOPluginInterface {
public:
typedef T** InterfaceT;
typedef InterfaceT element_type;
explicit ScopedIOPluginInterface(InterfaceT object = NULL)
: object_(object) {
}
~ScopedIOPluginInterface() {
if (object_)
(*object_)->Release(object_);
}
void reset(InterfaceT object = NULL) {
if (object_)
(*object_)->Release(object_);
object_ = object;
}
bool operator==(InterfaceT that) const {
return object_ == that;
}
bool operator!=(InterfaceT that) const {
return object_ != that;
}
operator InterfaceT() const {
return object_;
}
InterfaceT get() const {
return object_;
}
void swap(ScopedIOPluginInterface& that) {
InterfaceT temp = that.object_;
that.object_ = object_;
object_ = temp;
}
InterfaceT release() WARN_UNUSED_RESULT {
InterfaceT temp = object_;
object_ = NULL;
return temp;
}
private:
InterfaceT object_;
DISALLOW_COPY_AND_ASSIGN(ScopedIOPluginInterface);
};
} // namespace mac
} // namespace base
#endif // BASE_MAC_SCOPED_IOPLUGININTERFACE_H_
|
