blob: 2c071f37352a8c9397903cf329cf6e1a9a796c52 (
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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qplatformdefs.h"
#include "qsharedmemory.h"
#include "qsharedmemory_p.h"
#include "qsystemsemaphore.h"
#include <qdebug.h>
#include <errno.h>
#if QT_CONFIG(sharedmemory)
#include <sys/types.h>
#ifndef QT_POSIX_IPC
#include <sys/ipc.h>
#include <sys/shm.h>
#else
#include <sys/mman.h>
#endif
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#endif // QT_CONFIG(sharedmemory)
#include "private/qcore_unix_p.h"
#if QT_CONFIG(sharedmemory)
QT_BEGIN_NAMESPACE
QSharedMemoryPrivate::QSharedMemoryPrivate() :
#ifndef QT_NO_QOBJECT
QObjectPrivate(),
#endif
memory(nullptr), size(0), error(QSharedMemory::NoError),
#if QT_CONFIG(systemsemaphore)
systemSemaphore(QString()), lockedByMe(false),
#endif
#ifndef QT_POSIX_IPC
unix_key(0)
#else
hand(-1)
#endif
{
}
void QSharedMemoryPrivate::setErrorString(QLatin1StringView function)
{
// EINVAL is handled in functions so they can give better error strings
switch (errno) {
case EACCES:
errorString = QSharedMemory::tr("%1: permission denied").arg(function);
error = QSharedMemory::PermissionDenied;
break;
case EEXIST:
errorString = QSharedMemory::tr("%1: already exists").arg(function);
error = QSharedMemory::AlreadyExists;
break;
case ENOENT:
errorString = QSharedMemory::tr("%1: doesn't exist").arg(function);
error = QSharedMemory::NotFound;
break;
case EMFILE:
case ENOMEM:
case ENOSPC:
errorString = QSharedMemory::tr("%1: out of resources").arg(function);
error = QSharedMemory::OutOfResources;
break;
default:
errorString = QSharedMemory::tr("%1: unknown error %2").arg(function).arg(errno);
error = QSharedMemory::UnknownError;
#if defined QSHAREDMEMORY_DEBUG
qDebug() << errorString << "key" << key << "errno" << errno << EINVAL;
#endif
}
}
QT_END_NAMESPACE
#endif // QT_CONFIG(sharedmemory)
|
