blob: 6010233cadedc707c7d9eb38162791572066849e (
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
|
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmFileLock.h"
#include <cassert>
#include <utility>
#include "cmFileLockResult.h"
// Common implementation
cmFileLock::cmFileLock(cmFileLock&& other) noexcept
{
this->File = other.File;
#if defined(_WIN32)
other.File = INVALID_HANDLE_VALUE;
#else
other.File = -1;
#endif
this->Filename = std::move(other.Filename);
}
cmFileLock::~cmFileLock()
{
if (!this->Filename.empty()) {
const cmFileLockResult result = this->Release();
static_cast<void>(result);
assert(result.IsOk());
}
}
cmFileLock& cmFileLock::operator=(cmFileLock&& other) noexcept
{
this->File = other.File;
#if defined(_WIN32)
other.File = INVALID_HANDLE_VALUE;
#else
other.File = -1;
#endif
this->Filename = std::move(other.Filename);
return *this;
}
cmFileLockResult cmFileLock::Lock(const std::string& filename,
unsigned long timeout)
{
if (filename.empty()) {
// Error is internal since all the directories and file must be created
// before actual lock called.
return cmFileLockResult::MakeInternal();
}
if (!this->Filename.empty()) {
// Error is internal since double-lock must be checked in class
// cmFileLockPool by the cmFileLock::IsLocked method.
return cmFileLockResult::MakeInternal();
}
this->Filename = filename;
cmFileLockResult result = this->OpenFile();
if (result.IsOk()) {
if (timeout == static_cast<unsigned long>(-1)) {
result = this->LockWithoutTimeout();
} else {
result = this->LockWithTimeout(timeout);
}
}
if (!result.IsOk()) {
this->Filename.clear();
}
return result;
}
bool cmFileLock::IsLocked(const std::string& filename) const
{
return filename == this->Filename;
}
#if defined(_WIN32)
# include "cmFileLockWin32.cxx"
#else
# include "cmFileLockUnix.cxx"
#endif
|
