drd/tests/local_static.cpp

   1 // A C++ compiler is supposed to have thread-safe statics
   2
   3 #include <cstdio>
   4 #include <vector>
   5 #include <pthread.h>
   6
   7 class Singleton
   8 {
   9 public:
  10   Singleton()
  11     : value(42)
  12   { }
  13
  14   int value;
  15 };
  16
  17 void* thread_func(void*)
  18 {
  19   static Singleton singleton;
  20
  21   fprintf(stderr, "%d\n", singleton.value);
  22   fprintf(stderr, "%d\n", singleton.value);
  23   fprintf(stderr, "%d\n", singleton.value);
  24   fprintf(stderr, "%d\n", singleton.value);
  25   fprintf(stderr, "%d\n", singleton.value);
  26
  27   return 0;
  28 }
  29
  30 int main(int, char**)
  31 {
  32   std::vector<pthread_t> thread(2);
  33   void* v;
  34
  35   for (std::vector<pthread_t>::iterator p = thread.begin(); p != thread.end();
  36        p++) {
  37     if (pthread_create(&*p, 0, thread_func, 0) != 0) {
  38       fprintf(stderr, "Creation of thread %d failed\n",
  39               (int)(&*p - &*thread.begin()));
  40       return 1;
  41     }
  42   }
  43
  44   for (std::vector<pthread_t>::const_iterator p = thread.begin();
  45        p != thread.end(); p++) {
  46     pthread_join(*p, &v);
  47   }
  48
  49   fprintf(stderr, "Done.\n");
  50
  51   return 0;
  52 }
  53