blob: ae4d96b75797c1996d68dd3668b241fb95d427bc (
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
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* unique_fd.h - File descriptor wrapper that owns a file descriptor.
*/
#pragma once
#include <utility>
#include <libcamera/base/class.h>
#include <libcamera/base/compiler.h>
namespace libcamera {
class UniqueFD final
{
public:
UniqueFD()
: fd_(-1)
{
}
explicit UniqueFD(int fd)
: fd_(fd)
{
}
UniqueFD(UniqueFD &&other)
: fd_(other.release())
{
}
~UniqueFD()
{
reset();
}
UniqueFD &operator=(UniqueFD &&other)
{
reset(other.release());
return *this;
}
__nodiscard int release()
{
int fd = fd_;
fd_ = -1;
return fd;
}
void reset(int fd = -1);
void swap(UniqueFD &other)
{
std::swap(fd_, other.fd_);
}
int get() const { return fd_; }
bool isValid() const { return fd_ >= 0; }
private:
LIBCAMERA_DISABLE_COPY(UniqueFD)
int fd_;
};
} /* namespace libcamera */
|
