56 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			56 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /**
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|  * MXS-1985: MaxScale hangs on concurrent KILL processing
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|  */
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| 
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| #include "testconnections.h"
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| 
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| #include <atomic>
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| #include <thread>
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| #include <iostream>
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| 
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| using namespace std;
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| 
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| static atomic<bool> running{true};
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| 
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| int main(int argc, char *argv[])
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| {
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|     TestConnections test(argc, argv);
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|     vector<thread> threads;
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| 
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|     for (int i = 0; i < 20; i++)
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|     {
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|         threads.emplace_back([&, i]()
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|         {
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|             while (running)
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|             {
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|                 MYSQL* c = test.maxscales->open_rwsplit_connection();
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| 
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|                 // It doesn't really matter if the connection ID exists, this is just a
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|                 // handy way of generating cross-thread communication.
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|                 for (auto&& a: get_result(c, "SELECT id FROM information_schema.processlist"
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|                                           " WHERE user like '%skysql%'"))
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|                 {
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|                     if (execute_query_silent(c, std::string("KILL " + a[0]).c_str()))
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|                     {
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|                         break;
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|                     }
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|                 }
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| 
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|                 mysql_close(c);
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|             }
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|         });
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|     }
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| 
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|     sleep(10);
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|     running = false;
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| 
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|     // If MaxScale hangs, at least one thread will not return in time
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|     test.set_timeout(30);
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|     for (auto&& a: threads)
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|     {
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|         a.join();
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|     }
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| 
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|     return test.global_result;
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| }
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