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POshared_ptr gets destroyed before I can use it properly
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  1. POshared_ptr gets destroyed before I can use it properly
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    copied!<p>I have the following code, which is supposed to add a shared_ptr instance to an intrusive linked list by thread A. Some other consumer thread will then use it later on by removing it from the list. However at a certain point my shared_ptr seems to get destroyed and the reference to it in the linked list is no longer valid resulting in an Assert.</p> <p>Can someone enlighten me on what I am doing wrong? I suspect it is because I create my original shared_ptr in a local scope and it just gets destroyed. Although the List should still have a reference to it??? (This is NOT production code)</p> <p>EDIT:</p> <p><strong>Defintiions of variables used:</strong></p> <pre><code>BaseHookQueueList* lst; typedef boost::intrusive::list&lt;QueueList&gt; BaseHookQueueList; class QueueList : public boost::intrusive::list_base_hook&lt;&gt; // Making my BaseHookQueueList take a shared_ptr of pointing to type QueueList conflicts // with the list_base_hook because it does not seem to like shared_ptr... //////////////////////////////////////////////////////////////////////////////////// if (dwWait == WAIT_OBJECT_0) //Wait is successfull { while(count != 100) { //Some new request arrived boost::shared_ptr&lt;QueueList&gt; Qlist (new QueueList()); //Create shared_ptr instance int temp = 0; if (count &gt; 5) { Qlist-&gt;SetName(names[temp]); // Fill up name property of QueueList object with some nonsense... temp++; } else { Qlist-&gt;SetName(names[count]); } workerfunc(lst, Qlist); // Pass to worker func count++; } } // shared_ptr goes out scope and I get ASSERT error from list!! } } void workerfunc(BaseHookQueueList* l, LIST item) // LIST is a typedef shared_ptr&lt;QueueList&gt; LIST { { boost::mutex::scoped_lock workerfunclock(listlock); l-&gt;push_front(*item); //Add to list } //Scope of lock { boost::mutex::scoped_lock workerfuncconsoleLock(consolelock); printf("Adding item to list...\n"); } ReleaseSemaphore(hConsumer, 1, NULL); // Set conumser Semaphore to Signalled with number of items currently on the queue } </code></pre>
 

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