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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtCore module of the Qt Toolkit. |
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| ** Alternatively, this file may be used under the terms of the GNU |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #include "qplatformdefs.h" |
| |
| #include "qsharedmemory.h" |
| #include "qsharedmemory_p.h" |
| #include "qsystemsemaphore.h" |
| #include <qdebug.h> |
| |
| #include <errno.h> |
| |
| #ifndef QT_NO_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_NO_SHAREDMEMORY |
| |
| #include "private/qcore_unix_p.h" |
| |
| #ifndef QT_NO_SHAREDMEMORY |
| QT_BEGIN_NAMESPACE |
| |
| QSharedMemoryPrivate::QSharedMemoryPrivate() : |
| #ifndef QT_NO_QOBJECT |
| QObjectPrivate(), |
| #endif |
| memory(0), size(0), error(QSharedMemory::NoError), |
| #ifndef QT_NO_SYSTEMSEMAPHORE |
| systemSemaphore(QString()), lockedByMe(false), |
| #endif |
| #ifndef QT_POSIX_IPC |
| unix_key(0) |
| #else |
| hand(-1) |
| #endif |
| { |
| } |
| |
| void QSharedMemoryPrivate::setErrorString(QLatin1String 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_NO_SHAREDMEMORY |