Examples of com.sun.sgs.kernel.TaskReservation

com.sun.sgs.kernel.TaskReservation
This interface manages task reservations. Reservations are used to guarantee space in a scheduler for tasks. Once a reservation is acquired, the associated tasks will always have space to run. Acquiring a reservation does not actually schedule the tasks, so until use is called, the tasks will never run. The reservation may be cancelled if it has not yet been run, and no cost will be charged to the owner.
If this reservation includes tasks scheduled to be run at a specified time, and that time has already passed when use is called, then the tasks are run immediately.

        Thread.sleep(200L);
        assertEquals(1, taskCount);
    }


    @Test public void useReservedTaskDelayed() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(new IncrementRunner(), taskOwner,
                                      System.currentTimeMillis() + 50);
        reservation.use();
        Thread.sleep(300L);
        assertEquals(1, taskCount);
    }

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        Thread.sleep(300L);
        assertEquals(1, taskCount);
    }


    @Test public void cancelReservedTask() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(new IncrementRunner(), taskOwner);
        reservation.cancel();
        Thread.sleep(200L);
        assertEquals(0, taskCount);
    }

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        Thread.sleep(200L);
        assertEquals(0, taskCount);
    }


    @Test public void cancelReservedTaskDelayed() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(new IncrementRunner(), taskOwner,
                                      System.currentTimeMillis() + 50);
        reservation.cancel();
        Thread.sleep(300L);
        assertEquals(0, taskCount);
    }

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        assertEquals(0, taskCount);
    }


    @Test (expected=IllegalStateException.class)
        public void reuseReservedTask() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(testTask, taskOwner);
        reservation.use();
        reservation.use();
    }

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        reservation.use();
    }


    @Test (expected=IllegalStateException.class)
        public void reuseReservedTaskDelayed() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(testTask, taskOwner,
                                      System.currentTimeMillis() + 50);
        reservation.use();
        reservation.use();
    }

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        reservation.use();
    }


    @Test (expected=IllegalStateException.class)
        public void recancelReservedTask() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(testTask, taskOwner);
        reservation.cancel();
        reservation.cancel();
    }

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        reservation.cancel();
    }


    @Test (expected=IllegalStateException.class)
        public void recancelReservedTaskDelayed() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(testTask, taskOwner,
                                      System.currentTimeMillis() + 50);
        reservation.cancel();
        reservation.cancel();
    }

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        reservation.cancel();
    }


    @Test (expected=IllegalStateException.class)
        public void cancelAfterUseReservedTask() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(testTask, taskOwner);
        reservation.use();
        reservation.cancel();
    }

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        reservation.cancel();
    }


    @Test (expected=IllegalStateException.class)
        public void cancelAfterUseReservedTaskDelayed() throws Exception {
        TaskReservation reservation =
            taskScheduler.reserveTask(testTask, taskOwner,
                                      System.currentTimeMillis() + 50);
        reservation.use();
        reservation.cancel();
    }

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        queue.reserveTask(null);
    }


    @Test public void useReservedTask() throws Exception {
        SchedulerQueue queue = getQueueInstance();
        TaskReservation reservation = queue.reserveTask(testTask);
        reservation.use();
    }

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