drd/tests/std_atomic.cpp

   1 /*
   2  * Test program for std::atomic<>
   3  *
   4  * See also https://bugs.kde.org/show_bug.cgi?id=328490.
   5  */
   6
   7 #include "../drd.h"
   8 #include <atomic>
   9 #include <iostream>
  10 #include <string>
  11 #include <pthread.h>
  12
  13 std::atomic<bool> g_b;
  14
  15 void *func1(void *instance)
  16 {
  17   while (!g_b) {
  18     timespec delay = { 0, 100 * 1000 * 1000 };
  19     nanosleep(&delay, NULL);
  20   }
  21   return NULL;
  22 }
  23
  24 void *func2(void *instance)
  25 {
  26   g_b = true;
  27   return NULL;
  28 }
  29
  30 int main(int argc, char* argv[])
  31 {
  32   int err;
  33   pthread_t thread1;
  34   pthread_t thread2;
  35
  36   std::cerr << "Started.\n";
  37
  38   if (argc > 1)
  39     DRD_IGNORE_VAR(g_b);
  40
  41   err = pthread_create(&thread1, NULL, &func1, NULL);
  42   if (err != 0)
  43     throw std::string("failed to create a thread.");
  44   err = pthread_create(&thread2, NULL, &func2, NULL);
  45   if (err != 0)
  46     throw std::string("failed to create a thread.");
  47
  48   err = pthread_join(thread1, NULL);
  49   if (err != 0)
  50     throw std::string("Thread::join(): failed to join.");
  51   err = pthread_join(thread2, NULL);
  52   if (err != 0)
  53     throw std::string("Thread::join(): failed to join.");
  54
  55   std::cerr << "Done.\n";
  56 }