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| |
| //! [0] |
| void executeOperation(int msecs) |
| { |
| QDeadlineTimer deadline(msecs); |
| do { |
| if (readFromDevice(deadline.remainingTime()) |
| break; |
| waitForReadyRead(deadline); |
| } while (!deadline.hasExpired()); |
| } |
| //! [0] |
| |
| //! [1] |
| using namespace std::chrono; |
| using namespace std::chrono_literals; |
| |
| QDeadlineTimer deadline(30s); |
| device->waitForReadyRead(deadline); |
| if (deadline.remainingTime<nanoseconds>() > 300ms) |
| cleanup(); |
| //! [1] |
| |
| //! [2] |
| using namespace std::chrono; |
| using namespace std::chrono_literals; |
| auto now = steady_clock::now(); |
| QDeadlineTimer deadline(now + 1s); |
| Q_ASSERT(deadline == now + 1s); |
| //! [2] |
| |
| //! [3] |
| using namespace std::chrono_literals; |
| QDeadlineTimer deadline(250ms); |
| //! [3] |
| |
| //! [4] |
| using namespace std::chrono_literals; |
| deadline.setRemainingTime(250ms); |
| //! [4] |
| |
| //! [5] |
| mutex.tryLock(deadline.remainingTime()); |
| //! [5] |
| |
| //! [6] |
| qint64 realTimeLeft = deadline.deadline(); |
| if (realTimeLeft != (std::numeric_limits<qint64>::max)()) { |
| realTimeLeft -= QDeadlineTimer::current().deadline(); |
| // or: |
| //QElapsedTimer timer; |
| //timer.start(); |
| //realTimeLeft -= timer.msecsSinceReference(); |
| } |
| //! [6] |
| |
| //! [7] |
| qint64 realTimeLeft = deadline.deadlineNSecs(); |
| if (realTimeLeft != std::numeric_limits<qint64>::max()) |
| realTimeLeft -= QDeadlineTimer::current().deadlineNSecs(); |
| //! [7] |
| |
| //! [8] |
| return d1.deadlineNSecs() == d2.deadlineNSecs(); |
| //! [8] |
| |
| //! [9] |
| return d1.deadlineNSecs() != d2.deadlineNSecs(); |
| //! [9] |
| |
| //! [10] |
| return d1.deadlineNSecs() < d2.deadlineNSecs(); |
| //! [10] |
| |
| //! [11] |
| return d1.deadlineNSecs() <= d2.deadlineNSecs(); |
| //! [11] |
| |
| //! [12] |
| return d1.deadlineNSecs() > d2.deadlineNSecs(); |
| //! [12] |
| |
| //! [13] |
| return d1.deadlineNSecs() >= d2.deadlineNSecs(); |
| //! [13] |