RTAI on a debian distro - Unsure why this C thread code (implements a simple counter) would cause linux to crash -

-

The

I have a log file via printk This is the code that implements a simple counter and zero thread_code (function to write this void * is applied by args), and then it __init rtcode_init (zero) in the thread real time. This question is an examination question.

I'm sure why the code will cause Linux to crash. Is it due to steady work, because it can cause a race condition if you can reach the function arriving memory address multiple threads? It would be better to have someone say what is wrong with the code. 

  #define ARG 0 #define STACK_SIZE 1024 #define preference RT_SCHED_HIGHEST_PRIORITY #define USE_FPU 1 #define now rt_get_time () #define period nano2count (1000000) / * store data for thread * / RT_TASK Required thread_data; Zero Threadcode (Zero * arg) {int counter = 0; While (1) {counter + = 1; Printer ("counter =% d \ n", counter); } Return 0; } Fixed integer __init rtcode_init (zero) {rt_set_periodic_mode (); Start_rt_timer (period); rt_task_init (& amp; thread_data, thread_code, ARG, STACK_SIZE, priority, USE_FPU, null); Rt_task_make_periodic (& thread_data, now, duration); Return 0; }

This is the code that runs continuously creates a work with real-time priority. If your system has only one CPU core, then it will not be able to stop anything from running, which will make the system unusable. I do not think it will be "crash", ok, but it will stop answering the input.


Comments

Post a Comment

Popular posts from this blog

winforms - C# Form - Property Change -

-
I have a form that has a property named car A class with many properties. The Properties is being displayed on the current car on the basis of some user actions that are being displayed. So I have to know whether the property has been allocated or set to zero. I'm aware of INotifyPropertyChanged , but in my case I'm not sure that since this change I have changed my car properties car do not want to monitor the property. Any idea how to accomplish this? In advance thank you If you have created a true asset in your class then You should be a great and setter, you can add the code directly to the form property in order to take action on the basis of "form": Public partial category Form 1: form {public form 1 () {InitializeComponent (); } // define car square public class car {public string name = string. Empty; } // private car to keep the value of the current car private variable _car = null; // Property of public form which you can ru...
Read more

c# - NewtonSoft JArray - how to select multiple elements with LINQ -

-
Image
I have some Jason which I then parsed the Jerry object. I want to filter Jerere so that he has only two properties, title and bodytext. But whatever I try I can only select a value using LINQ [HttpGet] Public JsonResult AjaxGetNewsItems () {string json = JsonConvert.SerializeObject (news.GetNewsItems (), Formatting: formatting.Indented); Var v = Jairo Purse (jason); // arrow item = // v.Where (// X =>.! // X ["title"] ToString () = string.Empty & amp; //X ["BodyText"] ToString ()! = String.Empty) // Select (x = & gt; x ["title"]) // .toList (); Var title = (string) v [0] ["title"]; Var titleBodytext = v selectively v [0] ["title"] ["bodytext"]; Foreach (item in titleBodytext) {} // Title: Biodtext = // v [0] ["title"] ["BodyText"] by c // // Group c // new selection from c in gram // {}; // JArray a = JArray.FromObject (news.GetNewsItems ()); // string titlebodietext = (string) news item [...
Read more

javascript - amcharts makechart not working -

-
I am trying to create an amiratars serial chart on my Durandal single page application. This chart was working fine on Chrome browser but it is not working on IE. Can you please help me in this regard. Error while using Amcharts. The Macchart () method does not support the object in this object in IE.
Read more