libitm/testsuite/libitm.c/txrelease.c

   1 /* This test triggers execution of the code that releases per-thread
   2    transaction data when a thread exists, potentially repeatedly. However,
   3    we currently cannot check whether the data has indeed been released.  */
   4
   5 /* { dg-options "-pthread" } */
   6
   7 #include <stddef.h>
   8 #include <stdlib.h>
   9 #include <pthread.h>
  10
  11 static int round = 0;
  12 static pthread_key_t key;
  13
  14 static void
  15 thread_exit_handler(void *dummy __attribute__((unused)))
  16 {
  17   if (round == 0)
  18     abort();
  19   if (round == 1)
  20     {
  21       // ??? It would be good if we could check here that the transaction has
  22       // indeed been released.
  23       __transaction_atomic { round++; }
  24       if (pthread_setspecific(key, &round))
  25         abort();
  26     }
  27   // ??? It would be good if we could check here that the transaction has
  28   // indeed been released (again).
  29 }
  30
  31 static void *thread (void *dummy __attribute__((unused)))
  32 {
  33   if (pthread_key_create(&key, thread_exit_handler))
  34     abort();
  35   if (pthread_setspecific(key, &round))
  36     abort();
  37   __transaction_atomic { round++; }
  38   return NULL;
  39 }
  40
  41 int main()
  42 {
  43   pthread_t pt;
  44   pthread_create(&pt, NULL, thread, NULL);
  45   pthread_join(pt, NULL);
  46   if (round != 2)
  47     abort();
  48   return 0;
  49 }