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qsharedmemory_unix.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtCore module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
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15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
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35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qplatformdefs.h"-
41-
42#include "qsharedmemory.h"-
43#include "qsharedmemory_p.h"-
44#include "qsystemsemaphore.h"-
45#include <qdebug.h>-
46-
47#include <errno.h>-
48-
49#ifndef QT_NO_SHAREDMEMORY-
50#include <sys/types.h>-
51#ifndef QT_POSIX_IPC-
52#include <sys/ipc.h>-
53#include <sys/shm.h>-
54#else-
55#include <sys/mman.h>-
56#endif-
57#include <sys/stat.h>-
58#include <fcntl.h>-
59#include <unistd.h>-
60#endif //QT_NO_SHAREDMEMORY-
61-
62#include "private/qcore_unix_p.h"-
63-
64#ifndef QT_NO_SHAREDMEMORY-
65QT_BEGIN_NAMESPACE-
66-
67QSharedMemoryPrivate::QSharedMemoryPrivate()-
68 : QObjectPrivate(), memory(0), size(0), error(QSharedMemory::NoError),-
69#ifndef QT_NO_SYSTEMSEMAPHORE-
70 systemSemaphore(QString()), lockedByMe(false),-
71#endif-
72#ifndef QT_POSIX_IPC-
73 unix_key(0)-
74#else-
75 hand(-1)-
76#endif-
77{-
78}
executed 3612 times by 3 tests: end of block
Executed by:
  • tst_QApplication
  • tst_QSharedMemory
  • tst_qsharedmemory - unknown status
3612
79-
80void QSharedMemoryPrivate::setErrorString(QLatin1String function)-
81{-
82 // EINVAL is handled in functions so they can give better error strings-
83 switch (errno) {-
84 case EACCES:
never executed: case 13:
0
85 errorString = QSharedMemory::tr("%1: permission denied").arg(function);-
86 error = QSharedMemory::PermissionDenied;-
87 break;
never executed: break;
0
88 case EEXIST:
executed 2 times by 1 test: case 17:
Executed by:
  • tst_QSharedMemory
2
89 errorString = QSharedMemory::tr("%1: already exists").arg(function);-
90 error = QSharedMemory::AlreadyExists;-
91 break;
executed 2 times by 1 test: break;
Executed by:
  • tst_QSharedMemory
2
92 case ENOENT:
never executed: case 2:
0
93 errorString = QSharedMemory::tr("%1: doesn't exist").arg(function);-
94 error = QSharedMemory::NotFound;-
95 break;
never executed: break;
0
96 case EMFILE:
never executed: case 24:
0
97 case ENOMEM:
never executed: case 12:
0
98 case ENOSPC:
never executed: case 28:
0
99 errorString = QSharedMemory::tr("%1: out of resources").arg(function);-
100 error = QSharedMemory::OutOfResources;-
101 break;
never executed: break;
0
102 default:
never executed: default:
0
103 errorString = QSharedMemory::tr("%1: unknown error %2").arg(function).arg(errno);-
104 error = QSharedMemory::UnknownError;-
105#if defined QSHAREDMEMORY_DEBUG-
106 qDebug() << errorString << "key" << key << "errno" << errno << EINVAL;-
107#endif-
108 }
never executed: end of block
0
109}-
110-
111QT_END_NAMESPACE-
112-
113#endif // QT_NO_SHAREDMEMORY-
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