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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <thread>
     11 
     12 // class thread
     13 
     14 // thread(const thread&) = delete;
     15 
     16 #include <thread>
     17 #include <new>
     18 #include <cstdlib>
     19 #include <cassert>
     20 
     21 class G
     22 {
     23     int alive_;
     24 public:
     25     static int n_alive;
     26     static bool op_run;
     27 
     28     G() : alive_(1) {++n_alive;}
     29     G(const G& g) : alive_(g.alive_) {++n_alive;}
     30     ~G() {alive_ = 0; --n_alive;}
     31 
     32     void operator()()
     33     {
     34         assert(alive_ == 1);
     35         assert(n_alive >= 1);
     36         op_run = true;
     37     }
     38 
     39     void operator()(int i, double j)
     40     {
     41         assert(alive_ == 1);
     42         assert(n_alive >= 1);
     43         assert(i == 5);
     44         assert(j == 5.5);
     45         op_run = true;
     46     }
     47 };
     48 
     49 int G::n_alive = 0;
     50 bool G::op_run = false;
     51 
     52 int main()
     53 {
     54     {
     55         assert(G::n_alive == 0);
     56         assert(!G::op_run);
     57         std::thread t0(G(), 5, 5.5);
     58         std::thread::id id = t0.get_id();
     59         std::thread t1 = t0;
     60         assert(t1.get_id() == id);
     61         assert(t0.get_id() == std::thread::id());
     62         t1.join();
     63         assert(G::n_alive == 0);
     64         assert(G::op_run);
     65     }
     66 }
     67