1 00:00:01,480 --> 00:00:01,900 Hello. 2 00:00:03,000 --> 00:00:11,120 Welcome back and a lesson we go in to see how to achieve time slice and using our Vitalis daily function, 3 00:00:11,610 --> 00:00:17,580 we've seen the effect that our program has when we disable time slicing. 4 00:00:18,090 --> 00:00:23,340 OK, I'm going to close all of this and then I'm going to make a copy of our last project. 5 00:00:24,210 --> 00:00:27,450 I'll copy this and then I'll paste over here. 6 00:00:28,410 --> 00:00:32,550 I'll call this pseudo time slicing, OK? 7 00:00:43,640 --> 00:00:44,060 Yeah. 8 00:00:52,650 --> 00:00:59,100 OK, so we're going to open this and everything remains the same. 9 00:00:59,460 --> 00:01:05,280 We're not going to change any of our schedule or configuration, but to make use of all four of the 10 00:01:05,280 --> 00:01:10,140 tasks or four tasks here, I'm going to give all of them the same priority. 11 00:01:12,040 --> 00:01:13,890 OK, they all have the same priority. 12 00:01:14,410 --> 00:01:14,850 OK. 13 00:01:17,160 --> 00:01:24,100 And let's go to actually our schedule as we left it, with time slicing enabled. 14 00:01:24,120 --> 00:01:25,750 So let's go back and disable it. 15 00:01:26,130 --> 00:01:31,890 I'm going to go to include food are free config Dorridge and time slice in here. 16 00:01:31,900 --> 00:01:33,330 I'm going to set it to zero. 17 00:01:36,440 --> 00:01:42,830 Control is to safe and we know what would happen, what would happen is if we run this only the orange 18 00:01:42,830 --> 00:01:46,470 alert, the controller would have the process or let's verify that. 19 00:01:47,010 --> 00:01:48,020 I'll click here to build. 20 00:01:53,360 --> 00:01:54,020 It's biotin. 21 00:02:01,660 --> 00:02:08,320 It's still building, OK, it's done now, and I'm going to right click over here. 22 00:02:11,250 --> 00:02:13,380 And I'm going to say you book us. 23 00:02:14,320 --> 00:02:16,660 SDM to Coatex and. 24 00:02:20,330 --> 00:02:23,510 Selects the latest one, 32 over here. 25 00:02:31,850 --> 00:02:32,200 OK. 26 00:02:32,640 --> 00:02:33,790 OK, over here. 27 00:02:40,530 --> 00:02:41,850 Click switch over here. 28 00:02:44,220 --> 00:02:47,140 OK, and then I'm going to click to run, you know. 29 00:02:47,150 --> 00:02:54,270 You can see we have just the orange task running, of course, with disabled time slicing and all the 30 00:02:54,270 --> 00:02:56,040 tasks have the same priority. 31 00:02:56,070 --> 00:02:59,790 And because orange was created first, then that is the only one running. 32 00:02:59,890 --> 00:03:04,710 OK, still time slicing is disabled, but we go into. 33 00:03:05,780 --> 00:03:08,820 Let's define a delay amount, 50 milliseconds. 34 00:03:08,840 --> 00:03:17,330 I'm going to define a global variable here called underscore VMS 50 50 Ms. 35 00:03:17,900 --> 00:03:21,710 And this is basically passing 50 to Purdum's to Tick's. 36 00:03:22,040 --> 00:03:25,580 So this will give us the equivalent value in ticks and it in this variable. 37 00:03:25,820 --> 00:03:28,790 This is a bad name for a variable, but I'll just keep it. 38 00:03:29,450 --> 00:03:37,820 OK, so now I'm going to let each task go to the blocked stage or delay for this amount so the task 39 00:03:37,820 --> 00:03:39,370 functions over here. 40 00:03:39,860 --> 00:03:41,060 I'm going to add this. 41 00:03:42,560 --> 00:03:52,160 So this one go for TM's like this one, also this and this so quickly to build. 42 00:03:55,740 --> 00:03:59,940 It's built successfully and then we click over here to go to the Dibakar. 43 00:04:04,000 --> 00:04:04,750 It's open in. 44 00:04:05,900 --> 00:04:06,680 Click the switch. 45 00:04:10,180 --> 00:04:12,140 And then we click here to run. 46 00:04:13,730 --> 00:04:22,820 So we see all of them running now because the tasks go to sleep or do timesharing is disabled, it's 47 00:04:22,820 --> 00:04:30,110 as if there is there is a moment that the tasks all three, there's a moment that three tasks are you 48 00:04:30,110 --> 00:04:32,990 sleep and one can have charge to run. 49 00:04:33,510 --> 00:04:38,900 So there is a moment that three will be sleeping and then one will have the chance to run, although 50 00:04:38,900 --> 00:04:39,800 blue has stopped. 51 00:04:39,830 --> 00:04:43,550 OK, blue is getting some time, although this is not perfect time. 52 00:04:43,600 --> 00:04:44,710 So they're not running. 53 00:04:44,750 --> 00:04:49,850 We're not saying they are running for equal amount of time, but what is happening is they are all running 54 00:04:50,240 --> 00:04:50,690 right. 55 00:04:50,810 --> 00:04:53,420 And this happens because there is a window. 56 00:04:53,750 --> 00:04:55,410 All of them go to sleep for 50 five. 57 00:04:56,180 --> 00:05:02,320 So it could be that you find three of them sleeping and then one of them gets time to run and then a 58 00:05:02,330 --> 00:05:05,180 separate three goes to sleep and then one runs. 59 00:05:05,450 --> 00:05:07,970 So this is what I personally called a pseudo time. 60 00:05:08,990 --> 00:05:09,890 Time slicing. 61 00:05:10,580 --> 00:05:12,230 Um, yeah. 62 00:05:12,230 --> 00:05:16,420 So this it just so you know about this, right. 63 00:05:16,430 --> 00:05:21,590 So we would see a large configuration of the scheduler known as the cooperative configuration. 64 00:05:21,590 --> 00:05:23,030 You see that in the next lesson. 65 00:05:24,110 --> 00:05:25,760 OK, so I'll conclude here. 66 00:05:25,760 --> 00:05:26,420 See you later.