1 00:00:00,910 --> 00:00:01,970 Hello, welcome back. 2 00:00:02,530 --> 00:00:08,140 In this lesson, we are going to see how to create a thread or a task. 3 00:00:09,020 --> 00:00:15,380 Using the crisis Arktos apps, so I'm going to make a copy of our very first project so that this would 4 00:00:15,380 --> 00:00:20,530 be us if we started from scratch, I'm not going to use any of the intermediate projects we created. 5 00:00:20,540 --> 00:00:24,020 I'm going to go to project one task creation over here. 6 00:00:25,690 --> 00:00:30,340 I'll make a copy of this and then I'll pass it over here. 7 00:00:32,380 --> 00:00:33,790 And then I'll call this. 8 00:00:35,670 --> 00:00:45,120 No, we are at number 35, I call this 35 on the school, see Mrs. Artus. 9 00:00:48,580 --> 00:00:56,560 And then I call this thread, remember, I said a thread, the word thread and task can be used interchangeably. 10 00:00:57,490 --> 00:01:02,980 Is because the crisis artist uses the word threat, that is why I'm calling this threat rather than 11 00:01:02,980 --> 00:01:10,080 Tosk, so I'm going to open the may not see fall over here, double click over here and I'm going to 12 00:01:10,270 --> 00:01:11,730 let's see what we have here. 13 00:01:12,520 --> 00:01:17,770 I'm going to clean everything that has to do with quote from here. 14 00:01:20,130 --> 00:01:21,060 Oddly, this. 15 00:01:23,010 --> 00:01:25,050 This is the task functions. 16 00:01:26,510 --> 00:01:30,110 Because we made a copy of our free artist's version. 17 00:01:30,630 --> 00:01:33,950 OK, and I'll clean this. 18 00:01:37,870 --> 00:01:41,950 And I'll clean what we have over here. 19 00:01:43,070 --> 00:01:46,260 OK, we just clean all of this so that we start from scratch together. 20 00:01:46,640 --> 00:01:51,640 So over here, this one here, we did this, remember, we wrote a new function for our You are right. 21 00:01:52,250 --> 00:01:53,720 This is the very first project. 22 00:01:53,730 --> 00:01:58,070 So we had integrated our you at the see, and you are totally false. 23 00:01:58,700 --> 00:02:03,530 OK, so in this project, let's see. 24 00:02:05,710 --> 00:02:09,140 I will just enable this and disable this. 25 00:02:09,580 --> 00:02:13,470 I hope you remember this because we wanted to work with you. 26 00:02:13,510 --> 00:02:15,290 I wanted it to be faster. 27 00:02:15,820 --> 00:02:22,060 What we did was we wrote this new function so that we wouldn't use the how you ought to transmit function. 28 00:02:22,370 --> 00:02:26,640 OK, if you check the project, you would find that. 29 00:02:26,950 --> 00:02:29,950 OK, so this is our you are right. 30 00:02:29,950 --> 00:02:33,610 And then this one allows us to use printf and. 31 00:02:36,300 --> 00:02:38,890 Our Ewart's code is still in here. 32 00:02:39,150 --> 00:02:44,240 OK, so this the project one, I hope you're not confused by that. 33 00:02:44,690 --> 00:02:49,080 OK, so what are we going to do to use Simms's ARTUS? 34 00:02:49,080 --> 00:02:53,520 We have to go and find the documentation for Simms's Artus. 35 00:02:54,570 --> 00:03:03,450 So we said Simms's Artus, the the function for creating a threat takes takes a structure as argument 36 00:03:03,720 --> 00:03:10,260 we need to describe or the threat argument in a structure, and then we pass that structure as argument. 37 00:03:11,250 --> 00:03:17,460 We need to describe all the threat attributes, the parameters and characteristics of the threat. 38 00:03:17,730 --> 00:03:25,080 We need to define them in a structure imposter's structure as arguments to the threat create function. 39 00:03:25,090 --> 00:03:27,270 So I'll come to Google over here and type. 40 00:03:30,770 --> 00:03:40,160 Simms's Artus to over here and hit enter and I'll click this first link if you take me to the documentation. 41 00:03:43,470 --> 00:03:44,530 OK, here we are. 42 00:03:45,540 --> 00:03:52,620 So Simms's Artus to documentation, I can click over here, you can click here to see the function of 43 00:03:52,620 --> 00:03:53,070 abuse. 44 00:03:53,100 --> 00:03:56,220 This is the NASA APIs feature. 45 00:03:56,280 --> 00:04:02,880 We can drop down over here and then we can click function description and it gives us a list of all 46 00:04:02,880 --> 00:04:03,600 the functions. 47 00:04:04,750 --> 00:04:11,080 OK, so this over here can be a quick way of knowing the functions you might require. 48 00:04:11,470 --> 00:04:18,430 So over here, if you want to check thread management, there is a function to detach the thread. 49 00:04:19,130 --> 00:04:20,830 There's a function to get a thread ID. 50 00:04:20,830 --> 00:04:22,810 What we want to do is create a new thread. 51 00:04:22,810 --> 00:04:23,860 So that's a function here. 52 00:04:23,860 --> 00:04:27,360 Always threaten you, create a thread and add it to active threads. 53 00:04:27,520 --> 00:04:30,190 So let's click on this, threaten you and see what we have. 54 00:04:31,000 --> 00:04:31,520 OK. 55 00:04:31,540 --> 00:04:32,530 And as you can see. 56 00:04:34,070 --> 00:04:39,980 Dysfunction takes three arguments, the first argument is the threat function is what we used to call 57 00:04:39,980 --> 00:04:41,000 the task function. 58 00:04:41,360 --> 00:04:43,010 It is called threat function here. 59 00:04:43,280 --> 00:04:53,400 The second argument is it's a pointer to an argument or a parameter you can pass to the Detroit function. 60 00:04:53,420 --> 00:04:58,180 Remember, we can pass parameters to our created threat. 61 00:04:58,640 --> 00:05:01,150 So this argument is for that parameter. 62 00:05:01,430 --> 00:05:07,790 And this over here, the third argument is a pointer to a structure that you pass and this structure 63 00:05:07,790 --> 00:05:14,630 here inside this structure, you you would define the stack size of the threat, the the priority of 64 00:05:14,630 --> 00:05:18,020 the threat and other attributes that you want the threat to have. 65 00:05:19,490 --> 00:05:23,970 OK, when we come over here in this document, it tells us about the priority levels as well. 66 00:05:24,290 --> 00:05:27,680 Over here, it's created a special names for the priority. 67 00:05:27,680 --> 00:05:29,480 So there is priority normal. 68 00:05:31,480 --> 00:05:37,570 There is a priority below normal, normal, one mean normal priority plus one normal to normal, three 69 00:05:37,570 --> 00:05:44,800 normal for so many priorities, essentially, that it's given all of them symbolic names so that we 70 00:05:44,800 --> 00:05:46,930 need not use numbers. 71 00:05:47,440 --> 00:05:48,910 OK, so. 72 00:05:49,820 --> 00:05:50,730 Where is our function? 73 00:05:50,750 --> 00:05:56,210 This is it, if we screw up, it will tell us the argument for this function. 74 00:05:58,840 --> 00:06:00,970 Let's see, I grew up. 75 00:06:02,550 --> 00:06:03,150 Over here. 76 00:06:03,180 --> 00:06:10,350 OK, this table here describes the threat attributes to the structure that we pass to the threat, you 77 00:06:10,350 --> 00:06:12,240 can have these attributes. 78 00:06:13,110 --> 00:06:16,280 You can they can be a field for the name of the threat. 79 00:06:16,290 --> 00:06:17,010 Another one. 80 00:06:18,470 --> 00:06:24,300 This one is called Let's See, What does it say, attributes, unaskable bit the following bits mask 81 00:06:24,350 --> 00:06:28,410 can be used to set options through a detached or trainable. 82 00:06:28,430 --> 00:06:29,520 These are other options. 83 00:06:29,750 --> 00:06:32,850 So basically, there are so many options, we're not going to use all of them. 84 00:06:32,850 --> 00:06:36,770 Are we going to use the thread name, the stack size and the priority? 85 00:06:37,100 --> 00:06:41,510 OK, so now if all of that sounds blurry, let's just go to our project. 86 00:06:41,540 --> 00:06:42,500 This a fresh project. 87 00:06:42,500 --> 00:06:43,550 We don't need you out yet. 88 00:06:43,550 --> 00:06:44,380 You can delete it. 89 00:06:44,750 --> 00:06:48,560 But in any case, there's just a fresh project we go into. 90 00:06:49,720 --> 00:06:50,530 Starts by. 91 00:06:52,810 --> 00:06:59,740 Creating our task profile is we need profiles so that we can be able to see what our threat or task 92 00:06:59,740 --> 00:07:00,530 is working or not. 93 00:07:01,090 --> 00:07:02,810 So I'll bring the profile this year. 94 00:07:02,830 --> 00:07:08,000 We start with typedef great orange task profiler, red, green and blue. 95 00:07:08,440 --> 00:07:13,110 OK, I'm going to define the stock size over here. 96 00:07:13,120 --> 00:07:15,790 I'll see stock size five one two. 97 00:07:16,450 --> 00:07:19,840 OK, once that is done, I'm going to come over here. 98 00:07:20,380 --> 00:07:21,940 I'm going to declare. 99 00:07:24,310 --> 00:07:33,550 The structure for our threat, so coming to my main function over here and then I'll see this thread 100 00:07:34,660 --> 00:07:38,530 a TTR underscore t right. 101 00:07:39,880 --> 00:07:41,040 And then I'll give it a name. 102 00:07:41,050 --> 00:07:43,150 I call this green threat attributes. 103 00:07:51,050 --> 00:07:54,620 I can use an abbreviation of trips like this. 104 00:07:55,820 --> 00:07:57,710 OK, so this is a structure. 105 00:08:02,880 --> 00:08:05,460 And then I guess the addenda members. 106 00:08:06,680 --> 00:08:14,030 We use the dot operator, so I'll see DOT over here and you see it gives me all the members of the structure. 107 00:08:15,020 --> 00:08:20,450 I can select name, priority, stuck, memory, stock size, et cetera, what we want to start with 108 00:08:20,450 --> 00:08:21,100 is the name. 109 00:08:21,110 --> 00:08:27,050 So I'll say that name over here and I'll simply call this green task. 110 00:08:29,960 --> 00:08:30,530 And then. 111 00:08:34,670 --> 00:08:43,640 I see a dot over here stack size, and then I just assigned a stock size with a sign at the top over 112 00:08:43,640 --> 00:08:43,970 here. 113 00:08:50,420 --> 00:08:57,470 And then once that's done, I said dot or assign a priority level over here, I'll just give it a priority 114 00:08:57,470 --> 00:08:58,990 of normal or C. 115 00:08:59,570 --> 00:08:59,900 O. 116 00:08:59,920 --> 00:09:01,070 S priority. 117 00:09:04,530 --> 00:09:05,640 Almost like this. 118 00:09:06,160 --> 00:09:11,090 OK, so this is it, this is the green thread attributes. 119 00:09:11,430 --> 00:09:17,580 So then once we are done, we use the the function we saw is called the always threaten you. 120 00:09:18,030 --> 00:09:20,100 This function is what creates a new threat. 121 00:09:21,620 --> 00:09:22,610 Who is threatening you? 122 00:09:23,060 --> 00:09:33,020 OK, so we would say over here, who is threat knew and we passed the first argument. 123 00:09:33,350 --> 00:09:35,660 The first argument has to be a threat function. 124 00:09:35,990 --> 00:09:38,840 So we're going to have a threat function. 125 00:09:39,200 --> 00:09:45,680 We shall call this threat the threat function, which we used to call the task function, because taskin 126 00:09:45,680 --> 00:09:48,000 threat we use in the in the same context. 127 00:09:48,500 --> 00:09:56,330 So this is going to be a green task function and then we don't have any arguments or parameters to pass 128 00:09:56,330 --> 00:09:57,230 to this threat. 129 00:09:57,230 --> 00:10:02,780 So we pass all over here and then the attributes we need to add the attribute here. 130 00:10:05,530 --> 00:10:10,090 Like this, so then this will create our green threat for us. 131 00:10:12,090 --> 00:10:23,760 OK, so then we're going to repeat this, we can repeat this for, let's see, Red and the others. 132 00:10:23,760 --> 00:10:24,600 So I copy this. 133 00:10:28,170 --> 00:10:35,670 And this time, I'll call the attributes red threat attributes such that I'll change to red as well 134 00:10:36,330 --> 00:10:36,960 over here. 135 00:10:36,990 --> 00:10:41,370 I misspelled the word task, so the name of the thread. 136 00:10:43,870 --> 00:10:48,620 This one becomes red, although the priority be the same. 137 00:10:49,900 --> 00:10:51,070 And over here. 138 00:10:51,910 --> 00:10:59,260 So we have to pass this attributes as the third argument, and we're going to create a task function 139 00:10:59,260 --> 00:11:02,800 called Red Early Controller Task. 140 00:11:03,610 --> 00:11:06,640 OK, so once that is done, we can. 141 00:11:08,690 --> 00:11:11,310 Do one for orange and blue. 142 00:11:13,340 --> 00:11:21,740 So how about you post the video and you try to create four orange and blue because we have we have four 143 00:11:21,740 --> 00:11:28,010 profiler's here and we've created two threats to do one for orange and then blue and then on post the 144 00:11:28,010 --> 00:11:28,370 video. 145 00:11:29,460 --> 00:11:36,090 Right, it's as simple as what we've done is simple, we simply defined a structure. 146 00:11:39,680 --> 00:11:41,120 Over here, we give it a name. 147 00:11:42,320 --> 00:11:48,610 I'm going to call this orange task, I'll keep the priority the same. 148 00:11:49,160 --> 00:11:52,450 The task function is going to be orange, the controller. 149 00:11:53,630 --> 00:11:59,450 And then over here, we're going to change the name of the attributes to Orange. 150 00:12:00,390 --> 00:12:07,080 And we're going to pass this as the documents to the function and then we're going to do one for blue. 151 00:12:09,110 --> 00:12:18,310 You copy this, and then over here, we call the attributes blue, then the thread name. 152 00:12:19,400 --> 00:12:22,000 Blew in over here. 153 00:12:23,490 --> 00:12:30,360 The threat function blew and we're going to pass the attributes here. 154 00:12:32,060 --> 00:12:42,380 Like this, OK, so once we've created all of our threads or tasks over here, our OS task scheduler 155 00:12:42,380 --> 00:12:44,600 starts becomes always Kenna's that. 156 00:12:44,750 --> 00:12:45,830 So we start Akino. 157 00:12:47,180 --> 00:12:50,180 OK, you start Akino. 158 00:12:52,790 --> 00:12:55,010 So over here, he starts Keino. 159 00:12:59,830 --> 00:13:03,880 And then over here, we create threats. 160 00:13:08,650 --> 00:13:14,560 And also, actually, one step is required before we create the threats, we have to initialize the 161 00:13:14,560 --> 00:13:15,060 kennel. 162 00:13:15,910 --> 00:13:17,290 So I come up here. 163 00:13:21,140 --> 00:13:28,520 Initialise Keino like this, and we use Erskin initialize function, which we we can find in our function 164 00:13:28,520 --> 00:13:29,210 references. 165 00:13:29,900 --> 00:13:32,120 OK, so this is what we have next. 166 00:13:32,120 --> 00:13:39,290 We simply need to create the task functions so we can start with the tasks, which ones that we have. 167 00:13:39,290 --> 00:13:41,050 Let's we have all four of them. 168 00:13:41,060 --> 00:13:43,610 So I'll just start with green. 169 00:13:45,530 --> 00:13:52,310 This the task function is the same as the ones we've created before, we simply incrementing the various 170 00:13:52,310 --> 00:13:53,120 profiler's. 171 00:13:54,790 --> 00:14:04,000 So I just bring them from a previous project we created over here, we have Green Lady Controller Tosk, 172 00:14:04,000 --> 00:14:09,290 we simply incrementing Green Task Group Phyla, we have Orange Task. 173 00:14:09,590 --> 00:14:11,260 I like incremented in orange early. 174 00:14:11,290 --> 00:14:12,280 They control to task. 175 00:14:12,940 --> 00:14:15,710 We have the same florette we have the same for blue. 176 00:14:16,580 --> 00:14:21,960 OK, so we're looking good now let's do it and see what we've got here. 177 00:14:22,240 --> 00:14:23,050 Come over here. 178 00:14:24,790 --> 00:14:25,540 Right, click. 179 00:14:28,060 --> 00:14:29,740 I'll see the old project over here. 180 00:14:34,010 --> 00:14:35,210 It's building the project. 181 00:14:38,650 --> 00:14:39,220 OK. 182 00:14:40,000 --> 00:14:41,020 Oh, goodness. 183 00:14:42,190 --> 00:14:42,920 Just bear with me. 184 00:14:42,970 --> 00:14:46,780 We have to put the function prototypes at the top, the task functions. 185 00:14:48,790 --> 00:14:51,720 So that is why we received this type of error. 186 00:14:52,760 --> 00:15:00,240 OK, so we simply put the function prototypes here at the top here. 187 00:15:01,680 --> 00:15:03,620 OK, so let's do it again. 188 00:15:03,650 --> 00:15:09,770 So we have we simply copied the prototypes of each task function and placed the top let's build. 189 00:15:19,110 --> 00:15:21,240 OK, we've got no arrow, no warning. 190 00:15:21,860 --> 00:15:23,640 I'm going to right click over here. 191 00:15:25,120 --> 00:15:26,140 And see. 192 00:15:27,110 --> 00:15:32,180 Dbag us ystem 32 iSelect 35 Aubagio. 193 00:15:36,090 --> 00:15:37,680 Oh, say, OK, over here. 194 00:15:42,390 --> 00:15:43,200 It's open in. 195 00:15:45,210 --> 00:15:46,730 OK, let's switch over here. 196 00:15:50,990 --> 00:15:51,920 OK, let's see. 197 00:15:52,900 --> 00:15:54,640 It's getting ready, it's ready now. 198 00:15:54,670 --> 00:15:57,400 A click here to run and US can see. 199 00:15:58,310 --> 00:15:58,950 What happened? 200 00:15:58,970 --> 00:16:06,310 OK, they are working, we have each of them running equally and we can eliminate our delay if we want. 201 00:16:06,320 --> 00:16:11,960 We have this delay, pseudo delays that we've created, but we have each task. 202 00:16:13,080 --> 00:16:13,590 Running. 203 00:16:13,620 --> 00:16:19,360 OK, so this is how we can create our task. 204 00:16:19,410 --> 00:16:30,090 We can do the same thing we did in our native free Arktos API so we can use this census Arktos version 205 00:16:30,090 --> 00:16:30,970 to APIs. 206 00:16:30,990 --> 00:16:32,700 We can use it to achieve the same thing. 207 00:16:32,880 --> 00:16:36,800 OK, so this all the risk for this lesson and I assume the next lesson. 208 00:16:36,810 --> 00:16:37,620 Have a nice day.