diff options
Diffstat (limited to 'src/corelib/thread/qfutureinterface.cpp')
-rw-r--r-- | src/corelib/thread/qfutureinterface.cpp | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/src/corelib/thread/qfutureinterface.cpp b/src/corelib/thread/qfutureinterface.cpp index b34385897c..e640114bb0 100644 --- a/src/corelib/thread/qfutureinterface.cpp +++ b/src/corelib/thread/qfutureinterface.cpp @@ -110,14 +110,36 @@ static inline int switch_from_to(QAtomicInt &a, int from, int to) void QFutureInterfaceBase::cancel() { + cancel(CancelMode::CancelOnly); +} + +void QFutureInterfaceBase::cancel(QFutureInterfaceBase::CancelMode mode) +{ QMutexLocker locker(&d->m_mutex); - if (d->state.loadRelaxed() & Canceled) - return; - switch_from_to(d->state, suspendingOrSuspended, Canceled); + const auto oldState = d->state.loadRelaxed(); + + switch (mode) { + case CancelMode::CancelAndFinish: + if ((oldState & Finished) && (oldState & Canceled)) + return; + switch_from_to(d->state, suspendingOrSuspended | Running, Canceled | Finished); + break; + case CancelMode::CancelOnly: + if (oldState & Canceled) + return; + switch_from_to(d->state, suspendingOrSuspended, Canceled); + break; + } + d->waitCondition.wakeAll(); d->pausedWaitCondition.wakeAll(); - d->sendCallOut(QFutureCallOutEvent(QFutureCallOutEvent::Canceled)); + + if (!(oldState & Canceled)) + d->sendCallOut(QFutureCallOutEvent(QFutureCallOutEvent::Canceled)); + if (mode == CancelMode::CancelAndFinish && !(oldState & Finished)) + d->sendCallOut(QFutureCallOutEvent(QFutureCallOutEvent::Finished)); + d->isValid = false; } |