QThread: make finish() and cleanup() non-static members
Looks cleaner. Pick-to: 6.8 Change-Id: I77148a15c316ea0eaf63fffd9358d952c5b9e1d0 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
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@ -208,13 +208,13 @@ public:
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QWaitCondition thread_done;
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static void *start(void *arg);
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static void finish(void *); // happens early (before thread-local dtors)
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static void cleanup(void *); // happens late (as a thread-local dtor, if possible)
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void finish(); // happens early (before thread-local dtors)
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void cleanup(); // happens late (as a thread-local dtor, if possible)
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#endif // Q_OS_UNIX
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#ifdef Q_OS_WIN
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static unsigned int __stdcall start(void *) noexcept;
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static void finish(void *, bool lockAnyway = true) noexcept;
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void finish(bool lockAnyway = true) noexcept;
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Qt::HANDLE handle;
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unsigned int id;
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@ -112,15 +112,15 @@ static void destroy_current_thread_data(void *p)
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// this is very likely the last reference. These pointers cannot be
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// null and there is no race.
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QThreadPrivate *thread_p = static_cast<QThreadPrivate *>(QObjectPrivate::get(thread));
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thread_p->finish(thread);
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thread_p->finish();
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if constexpr (!QT_CONFIG(broken_threadlocal_dtors))
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thread_p->cleanup(thread);
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thread_p->cleanup();
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} else if constexpr (!QT_CONFIG(broken_threadlocal_dtors)) {
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// We may be racing the QThread destructor in another thread. With
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// two-phase clean-up enabled, there's also no race because it will
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// stop in a call to QThread::wait() until we call cleanup().
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QThreadPrivate *thread_p = static_cast<QThreadPrivate *>(QObjectPrivate::get(thread));
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thread_p->cleanup(thread);
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thread_p->cleanup();
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} else {
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// We may be racing the QThread destructor in another thread and it may
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// have begun destruction; we must not dereference the QThread pointer.
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@ -314,7 +314,7 @@ void *QThreadPrivate::start(void *arg)
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// this ensures the thread-local is created as early as possible
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set_thread_data(data);
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pthread_cleanup_push(QThreadPrivate::finish, arg);
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pthread_cleanup_push([](void *arg) { static_cast<QThread *>(arg)->d_func()->finish(); }, arg);
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terminate_on_exception([&] {
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{
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QMutexLocker locker(&thr->d_func()->mutex);
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@ -361,11 +361,11 @@ void *QThreadPrivate::start(void *arg)
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return nullptr;
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}
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void QThreadPrivate::finish(void *arg)
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void QThreadPrivate::finish()
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{
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terminate_on_exception([&] {
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QThread *thr = reinterpret_cast<QThread *>(arg);
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QThreadPrivate *d = thr->d_func();
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QThreadPrivate *d = this;
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QThread *thr = q_func();
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// Disable cancellation; we're already in the finishing touches of this
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// thread, and we don't want cleanup to be disturbed by
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@ -387,14 +387,13 @@ void QThreadPrivate::finish(void *arg)
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});
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if constexpr (QT_CONFIG(broken_threadlocal_dtors))
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cleanup(arg);
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cleanup();
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}
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void QThreadPrivate::cleanup(void *arg)
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void QThreadPrivate::cleanup()
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{
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terminate_on_exception([&] {
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QThread *thr = reinterpret_cast<QThread *>(arg);
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QThreadPrivate *d = thr->d_func();
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QThreadPrivate *d = this;
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// Disable cancellation again: we did it above, but some user code
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// running between finish() and cleanup() may have turned them back on.
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@ -207,9 +207,8 @@ DWORD WINAPI qt_adopted_thread_watcher_function(LPVOID)
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QThread *thread = data->thread;
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Q_ASSERT(thread);
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auto thread_p = static_cast<QThreadPrivate *>(QObjectPrivate::get(thread));
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Q_UNUSED(thread_p);
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Q_ASSERT(thread_p->threadState == QThreadPrivate::Running);
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QThreadPrivate::finish(thread);
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thread_p->finish();
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}
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data->deref();
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@ -269,7 +268,7 @@ unsigned int __stdcall QT_ENSURE_STACK_ALIGNED_FOR_SSE QThreadPrivate::start(voi
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QThread::setTerminationEnabled(true);
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thr->run();
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finish(arg);
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thr->d_func()->finish();
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return 0;
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}
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@ -284,10 +283,10 @@ unsigned int __stdcall QT_ENSURE_STACK_ALIGNED_FOR_SSE QThreadPrivate::start(voi
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In those cases, \a arg will not be the current thread.
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*/
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void QThreadPrivate::finish(void *arg, bool lockAnyway) noexcept
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void QThreadPrivate::finish(bool lockAnyway) noexcept
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{
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QThread *thr = reinterpret_cast<QThread *>(arg);
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QThreadPrivate *d = thr->d_func();
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QThreadPrivate *d = this;
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QThread *thr = q_func();
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QMutexLocker locker(lockAnyway ? &d->mutex : nullptr);
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d->threadState = QThreadPrivate::Finishing;
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@ -477,7 +476,7 @@ void QThread::terminate()
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}
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TerminateThread(d->handle, 0);
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QThreadPrivate::finish(this, false);
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d->finish(false);
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}
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bool QThread::wait(QDeadlineTimer deadline)
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@ -515,7 +514,7 @@ bool QThread::wait(QDeadlineTimer deadline)
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if (ret && d->threadState < QThreadPrivate::Finished) {
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// thread was terminated by someone else
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QThreadPrivate::finish(this, false);
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d->finish(false);
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}
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if (d->threadState == QThreadPrivate::Finished && !d->waiters) {
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@ -535,7 +534,7 @@ void QThread::setTerminationEnabled(bool enabled)
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QMutexLocker locker(&d->mutex);
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d->terminationEnabled = enabled;
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if (enabled && d->terminatePending) {
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QThreadPrivate::finish(thr, false);
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d->finish(false);
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locker.unlock(); // don't leave the mutex locked!
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_endthreadex(0);
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}
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