helgrind/tests/getaddrinfo.c

   1 #include <netdb.h>
   2 #include <pthread.h>
   3 #include <sys/socket.h>
   4 #include <sys/types.h>
   5
   6 struct data {
   7     const char *hostname;
   8     struct addrinfo *res;
   9 };
  10
  11 struct data threaddat[] = {
  12     { "www.freebsd.org", 0 },
  13     { "www.google.com", 0 },
  14     { "www.freshports.org", 0 },
  15     { "www.github.com", 0 },
  16     { "www.kernel.org", 0 },
  17     { "petunia.bogus.address", 0 }
  18 };
  19
  20 static const size_t threaddat_size = sizeof(threaddat)/sizeof(threaddat[0]);
  21
  22 pthread_t threads[sizeof(threaddat)/sizeof(threaddat[0])];
  23
  24 void *resolve(void *d) {
  25     struct data *data = d;
  26     getaddrinfo(data->hostname, 0, 0, &data->res);
  27     return 0;
  28 }
  29
  30 int main(void) {
  31     int i;
  32     for (i = 0; i < threaddat_size; ++i) {
  33         pthread_create(&threads[i], 0, resolve, &threaddat[i]);
  34     }
  35     for (i = 0; i < threaddat_size; ++i) {
  36         pthread_join(threads[i], 0);
  37         // musl crashes if you pass a NULL pointer to freeaddrinfo
  38         if (threaddat[i].res)
  39         {
  40             freeaddrinfo(threaddat[i].res);
  41         }
  42     }
  43     return 0;
  44 }
  45