A "sharing violation" happens when trying to delete the lock file and another
thread/process is reading it at that very moment. Detect the error and try again,
up to 10000 times - to avoid an infinite loop if QFile::remove fails for another
reason such as a sudden change of permissions preventing us from deleting our
own lock file.
On Unix the deletion can't fail because of readers, but it doesn't hurt
to check the return value there too, to catch other reasons for failures
such as a sudden permission change.
Task-number: QTBUG-38853
Change-Id: Icf12a74faed4a4916e3427abc09d9c33aa141476
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QLockFile "noPermissions" test is not applicable with root
privileges.
Change-Id: I5779da524f24d0f1b9ef519d654856a6200da6bf
Reviewed-by: David Faure <david.faure@kdab.com>
A handful of tests lack QT_NO_PROCESS guards, making them non-compilable
on Qt builds with no QProcess support. This commit does not change
QProcess-specific tests, which should be left out of the build using the
.pro file mechanism.
Change-Id: Iac8562428abc1f59ccbb23bf5c3a919785e41f12
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
OpenProcess + WaitForSingleObject is supposed to fail after the process exits,
but this seems to take some time until Windows notices.
Change-Id: I942a9b4a458c23fc4ac33b28386e28821128e991
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Locking between processes, implemented with open(O_EXCL) on Unix
and CreateFile(CREATE_NEW) on Windows.
Supports detecting stale lock files and deleting them.
Advisory locking is used to prevent deletion of files that are still in use.
Change-Id: Id00ee2a4e77a29483d869037c7047c59cb909339
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
