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(atomic_read(ptr) == 10);         \
  20         atomic_add(ptr, -11UL);                 \
  21         assert(atomic_read(ptr) == (__typeof__(*(ptr)))-1UL);   \
  22         v = cmpxchg(ptr, -1UL, 22);             \
  23         assert(atomic_read(ptr) == 22);         \
  24         assert(v == (__typeof__(*(ptr)))-1UL);  \
  25         v = cmpxchg(ptr, 33, 44);               \
  26         assert(atomic_read(ptr) == 22);         \
  27         assert(v == 22);                        \
  28         v = xchg(ptr, 55);                      \
  29         assert(atomic_read(ptr) == 55);         \
  30         assert(v == 22);                        \
  31         atomic_set(ptr, 22);                    \
  32         atomic_inc(ptr);                        \
  33         assert(atomic_read(ptr) == 23);         \
  34         atomic_dec(ptr);                        \
  35         assert(atomic_read(ptr) == 22);         \
  36         v = atomic_add_return(ptr, 100);        \
  37         assert(v == 122);                       \
  38         assert(atomic_read(ptr) == 122);        \
  39         v = atomic_sub_return(ptr, 1);          \
  40         assert(v == 121);                       \
  41         assert(atomic_read(ptr) == 121);        \
  42 } while (0)
  43
  44 int main(int argc, char **argv)
  45 {
  46         do_test(&vals.c);
  47         do_test(&vals.s);
  48         do_test(&vals.i);
  49         do_test(&vals.l);
  50         printf("Atomic ops test OK\n");
  51
  52         return 0;
  53 }