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| author | Ritt Konstantin <qnx@ics.com> | 2011-06-21 13:51:08 +0200 |
|---|---|---|
| committer | Harald Fernengel <harald.fernengel@nokia.com> | 2011-06-21 14:05:42 +0200 |
| commit | d869e1ad4b0007757e97046609de2097cd9e9c5d (patch) | |
| tree | 5ff57ff14b0c7cf55c74ac91c9eefc9631e482b9 /src/corelib/kernel/qsharedmemory.cpp | |
| parent | 6ef4abaa9cd7d465cbae5cbf8cb4664bef387d10 (diff) | |
| download | qt4-tools-d869e1ad4b0007757e97046609de2097cd9e9c5d.tar.gz | |
implement POSIX IPC based QSystemSemaphore and QSharedMemory backends
Merge-request: 1259
Reviewed-by: Harald Fernengel <harald.fernengel@nokia.com>
Diffstat (limited to 'src/corelib/kernel/qsharedmemory.cpp')
| -rw-r--r-- | src/corelib/kernel/qsharedmemory.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/corelib/kernel/qsharedmemory.cpp b/src/corelib/kernel/qsharedmemory.cpp index 288227933c..371974cae9 100644 --- a/src/corelib/kernel/qsharedmemory.cpp +++ b/src/corelib/kernel/qsharedmemory.cpp @@ -80,6 +80,8 @@ QSharedMemoryPrivate::makePlatformSafeKey(const QString &key, return result; #elif defined(Q_OS_SYMBIAN) return result.left(KMaxKernelName); +#elif defined(QT_POSIX_IPC) + return QLatin1Char('/') + result; #else return QDir::tempPath() + QLatin1Char('/') + result; #endif @@ -117,6 +119,9 @@ QSharedMemoryPrivate::makePlatformSafeKey(const QString &key, process crashes without running the QSharedMemory destructor, the shared memory segment survives the crash. + \o QNX: Due to possible race conditions in the POSIX IPC implementation, create() + should be called prior to any attach() calls (even across multiple threads). + \o HP-UX: Only one attach to a shared memory segment is allowed per process. This means that QSharedMemory should not be used across multiple threads in the same process in HP-UX. |