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POrun time exception raised in code
 

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  1. POrun time exception raised in code
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    <p>i am implementing one algorithm in which i have used thread library of CPP and Intel TBB Library for MultiCore.while i am calling function with the help of thread some times it executes perfectly and sometimes it gives run time exception.i am trying to find cause but couldn't find . Please find the code snippet example which is giving exception.</p> <pre><code>#include &lt;iostream&gt; #include &lt;sstream&gt; #include &lt;fstream&gt; #include &lt;vector&gt; #include &lt;algorithm&gt; #include &lt;tbb/pipeline.h&gt; #include &lt;tbb/atomic.h&gt; #include &lt;tbb/concurrent_queue.h&gt; #include &lt;tbb/compat/thread&gt; #include &lt;tbb/tbbmalloc_proxy.h&gt; using namespace std; using namespace tbb; #define pi 3.141593 #define FILTER_LEN 265 class MyBuffer { public: double *acc; double *buffer; int start,end; MyBuffer() { start=0; end=0; buffer=new double[150264]; acc=new double[150000]; fill_n(buffer,150264,0); } ~MyBuffer() { delete[] buffer; delete[] acc; } int startnumber() { return start; } int endnumber() { return end; } }; typedef concurrent_queue&lt;MyBuffer&gt; QueueMyBufferType; QueueMyBufferType chunk_queue; atomic&lt;bool&gt; stop_flag; // input function that will be running by thread to generate sinewave void input_function() { stop_flag = false; cout&lt;&lt;"thread reached to call input function " &lt;&lt;endl; ofstream o("testing sinewave.csv"); int counter=0; while(counter&lt;150000) { cout&lt;&lt;"value of counter is \t" &lt;&lt;counter &lt;&lt; endl; //MyBuffer *b=new MyBuffer; MyBuffer b; b.start=(FILTER_LEN-1+(counter)); b.end=(25264+(counter)); cout&lt;&lt;"value of b.start is and b.end is "&lt;&lt;b.start&lt;&lt;"\t" &lt;&lt;b.end&lt;&lt;endl; for(int i =b.startnumber(); i &lt;b.endnumber(); i++) { b.buffer[i] = sin(700 * (2 * pi) * (i / 5000.0)); o&lt;&lt;b.buffer[i]&lt;&lt;endl; } chunk_queue.push(b); cout&lt;&lt;"object pushed in queue and value of j is \t" &lt;&lt;counter &lt;&lt;endl; counter+=25000; } stop_flag = true; cout&lt;&lt;"all data is perfectly generated" &lt;&lt;endl; } int main() { thread input_thread(input_function); while(!stop_flag) { //cout&lt;&lt;"waiting for thread " &lt;&lt; endl; } cout &lt;&lt; "\n All Data is processed \n\n" &lt;&lt; endl; return 0; } </code></pre> <p>This code is part of application and helps in generating sine wave .Please help to find where i am getting wrong.</p>
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    1. PTQuestion
    1. USJasdeep Singh Arora
    1. USJasdeep Singh Arora
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. COwhich run time exception it is giving ?
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      1. POrun time exception raised in code
      1. USNetStarter
    2. CO*"... some times it executes perfectly and sometimes it gives run time exception ..."*. A likely symptom of a data race and therefore will fall in the *undefined behavior* land.
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      1. POrun time exception raised in code
      1. USMark Garcia
    3. CO@NetStarter after printing on console all the outputs it gives this exe has stop working ....
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      1. POrun time exception raised in code
      1. USJasdeep Singh Arora
 

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