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POboost: thread not executing an handler posted after the reception of a signal
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  1. POboost: thread not executing an handler posted after the reception of a signal
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    copied!<p>I am getting acquainted with boost thread and signals. I am thus implementing this simple example, I only post the cpp file of an example class implementing a thread capable of executing a method when a Signal1 is fired. The signal is defined within a Package1Signals singleton (excuse me for these names, they have been generated from a model)</p> <p>Class1.hpp</p> <pre><code>#ifndef CLASS1_HEADER #define CLASS1_HEADER #include &lt;boost/asio/io_service.hpp&gt; #include &lt;boost/asio/ip/udp.hpp&gt; #include &lt;boost/asio/signal_set.hpp&gt; #include "Package1.hpp" #include &lt;boost/thread.hpp&gt; class Class1{ private: boost::asio::io_service service; public: boost::thread thread; Class1(); void classifierBehavior(); void Reception1(Signal1 signal1); void Reception1Behavior(); }; #endif </code></pre> <p>Class1.cpp</p> <pre><code>#include "Class1.hpp" #include &lt;boost/thread.hpp&gt; #include &lt;boost/date_time.hpp&gt; #include "Package1.hpp" #include "Package2.hpp" #include "Package1.hpp" Class1::Class1(){ //boost::thread thread(boost::bind(&amp;Class1::classifierBehavior,boost::ref(*this))); //thread.join(); thread = boost::thread(&amp;Class1::classifierBehavior,this); }; void Class1::classifierBehavior(){ Package1Signals::getInstance()-&gt;signal1.connect(boost::bind(&amp;Class1::Reception1, this,_1)); service.run(); }; void Class1::Reception1(Signal1 signal1){ std::cout&lt;&lt;"Signal received\n"; service.post(boost::bind(&amp;Class1::Reception1Behavior, this)); } void Class1::Reception1Behavior(){ std::cout&lt;&lt;"Behavior executed\n"; } </code></pre> <p>Package1.hpp</p> <pre><code>#ifndef PACKAGE1_HEADER #define PACKAGE1_HEADER #include &lt;boost/signal.hpp&gt; struct Signal1{ }; class Package1Signals{ private: Package1Signals(); static Package1Signals * instance; public: boost::signal&lt;void(Signal1)&gt; signal1; static Package1Signals * getInstance(); }; #endif </code></pre> <p>Package1.cpp</p> <pre><code> #include "Package1.hpp" Package1Signals * Package1Signals::instance = NULL; Package1Signals::Package1Signals(){} Package1Signals * Package1Signals::getInstance(){ if(!instance){ instance = new Package1Signals(); } return instance; } </code></pre> <p>here is the code which executes it</p> <pre><code>int main() { Class1 test; Package1Signals::getInstance()-&gt;signal1(); test.thread.join(); int k =0; std::cin&gt;&gt;k; return 0; } </code></pre> <p>I can see the thread runs, the signal is intercepted but the posted handler is not executed. What am I doing wrong? </p>
 

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