blob: 36087c9bdecfdf5651f8a06a9d2bc08faec4d5f6 (
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
|
// 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_MACH_PORT_H_
#define BASE_MAC_SCOPED_MACH_PORT_H_
#include <mach/mach.h>
#include "base/base_export.h"
#include "base/scoped_generic.h"
namespace base {
namespace mac {
namespace internal {
struct BASE_EXPORT SendRightTraits {
static mach_port_t InvalidValue() {
return MACH_PORT_NULL;
}
static void Free(mach_port_t port);
};
struct BASE_EXPORT ReceiveRightTraits {
static mach_port_t InvalidValue() {
return MACH_PORT_NULL;
}
static void Free(mach_port_t port);
};
} // namespace internal
// A scoper for handling a Mach port that names a send right. Send rights are
// reference counted, and this takes ownership of the right on construction
// and then removes a reference to the right on destruction. If the reference
// is the last one on the right, the right is deallocated.
class BASE_EXPORT ScopedMachSendRight :
public base::ScopedGeneric<mach_port_t, internal::SendRightTraits> {
public:
explicit ScopedMachSendRight(mach_port_t port = traits_type::InvalidValue())
: ScopedGeneric(port) {}
operator mach_port_t() const { return get(); }
};
// A scoper for handling a Mach port's receive right. There is only one
// receive right per port. This takes ownership of the receive right on
// construction and then destroys the right on destruction, turning all
// outstanding send rights into dead names.
class BASE_EXPORT ScopedMachReceiveRight :
public base::ScopedGeneric<mach_port_t, internal::ReceiveRightTraits> {
public:
explicit ScopedMachReceiveRight(
mach_port_t port = traits_type::InvalidValue()) : ScopedGeneric(port) {}
operator mach_port_t() const { return get(); }
};
} // namespace mac
} // namespace base
#endif // BASE_MAC_SCOPED_MACH_PORT_H_
|