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POHow to create a subclass of thread Class properly in C++(subclass of std::thread)
 

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  1. POHow to create a subclass of thread Class properly in C++(subclass of std::thread)
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    <p>I am trying to create a class <code>Parallel</code> which is a subclass of <code>std::thread</code>,therefore my class is defined in <code>Parallel.h</code>,but the main method defined in separate file <code>main.cpp</code> in same project(in visual studio).When I create an instance of <code>Parallel</code> and execute <code>join()</code> function in <code>main()</code> method as below code segment: I am new to C++, here is the "Parallel.h"-</p> <pre><code>#include&lt;thread&gt; using namespace std; namespace Para{ class Parallel:thread { public: static void run(){ } Parallel(void) { } virtual ~Parallel(void) { } inline static void start(Parallel* p){ // (*p).join(); } virtual void Parallel::start(thread&amp; t){ } static void parallelize(Parallel&amp; p1,Parallel&amp; p2){ } inline virtual Parallel* operator=(thread* t){ return static_cast&lt;Parallel*&gt;(t); } } </code></pre> <p>//in main.cpp</p> <pre><code>void main(){ Parallel p; p.join(); thread t(print); t.join(); system("Pause"); } </code></pre> <p>Problem is how to define a proper subclass of a thread class having a overloaded constructor taking function name as a parameter,also when defined <code>p.join()</code> compiler given following errors in VS2012:</p> <blockquote> <p>Error 2 error C2247: 'std::thread::join' not accessible because 'Para::Parallel' uses 'private' to inherit from 'std::thread' C:\Users\Gamer\Desktop\PROJECQ\VC++@OMAQ\CQ47\CQ47\main.cpp 11</p> <p>3 IntelliSense: function "std::thread::join" (declared at line 209 of "H:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\thread") is inaccessible c:\Users\Gamer\Desktop\PROJECQ\VC++@OMAQ\CQ47\CQ47\main.cpp 11</p> </blockquote>
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    1. USBuddhika Chaturanga
    1. USBuddhika Chaturanga
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    1. COInheriting from Standard Library classes is generally a bad idea. Why do you need to do that?
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      1. POHow to create a subclass of thread Class properly in C++(subclass of std::thread)
      1. USManu343726
    2. COCan you provide the header as well?
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      1. POHow to create a subclass of thread Class properly in C++(subclass of std::thread)
      1. USipinak
    3. COIf you're asking about it you should at least show the `Parallel` class declaration.
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      1. POHow to create a subclass of thread Class properly in C++(subclass of std::thread)
      1. USπάντα ῥεῖ
 

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