tests/test_atomic.c

   1 #include <stdio.h>
   2 #include <arch_atomic.h>
   3 #include <assert.h>
   4
   5 struct testvals {
   6         unsigned char c;
   7         unsigned short s;
   8         unsigned int i;
   9         unsigned long l;
  10 };
  11
  12 static struct testvals vals;
  13
  14 #define do_test(ptr)                            \
  15 do {                                            \
  16         __typeof__(*(ptr)) v;                   \
  17                                                 \
  18         atomic_add(ptr, 10);                    \
  19         assert(*(ptr) == 10);                   \
  20         atomic_add(ptr, -11UL);                 \
  21         assert(*(ptr) == (__typeof__(*(ptr)))-1UL);     \
  22         v = cmpxchg(ptr, -1UL, 22);             \
  23         assert(*(ptr) == 22);                   \
  24         assert(v == (__typeof__(*(ptr)))-1UL);  \
  25         v = cmpxchg(ptr, 33, 44);               \
  26         assert(*(ptr) == 22);                   \
  27         assert(v == 22);                        \
  28         v = xchg(ptr, 55);                      \
  29         assert(*(ptr) == 55);                   \
  30         assert(v == 22);                        \
  31 } while (0)
  32
  33 int main(int argc, char **argv)
  34 {
  35         do_test(&vals.c);
  36         do_test(&vals.s);
  37         do_test(&vals.i);
  38         do_test(&vals.l);
  39         printf("Atomic ops test OK\n");
  40
  41         return 0;
  42 }