xref: /xnu-8792.81.2/tests/os_atomic.cpp (revision 19c3b8c28c31cb8130e034cfb5df6bf9ba342d90)
1*19c3b8c2SApple OSS Distributions #include <darwintest.h>
2*19c3b8c2SApple OSS Distributions #include <os/atomic_private.h>
3*19c3b8c2SApple OSS Distributions 
4*19c3b8c2SApple OSS Distributions T_GLOBAL_META(
5*19c3b8c2SApple OSS Distributions 	T_META_RUN_CONCURRENTLY(true),
6*19c3b8c2SApple OSS Distributions 	T_META_CHECK_LEAKS(false)
7*19c3b8c2SApple OSS Distributions 	);
8*19c3b8c2SApple OSS Distributions 
9*19c3b8c2SApple OSS Distributions T_DECL(os_atomic, "Just to make sure things build at all in c++ mode")
10*19c3b8c2SApple OSS Distributions {
11*19c3b8c2SApple OSS Distributions 	os_atomic(int) i = 0;
12*19c3b8c2SApple OSS Distributions 	int old_i = 0;
13*19c3b8c2SApple OSS Distributions 	volatile int v_i = 0;
14*19c3b8c2SApple OSS Distributions 	int a, b;
15*19c3b8c2SApple OSS Distributions 
16*19c3b8c2SApple OSS Distributions 	T_ASSERT_EQ(os_atomic_inc_orig(&i, relaxed), 0, "atomic inc");
17*19c3b8c2SApple OSS Distributions 	T_ASSERT_EQ(os_atomic_cmpxchg(&i, 1, 0, relaxed), true, "os_atomic_cmpxchg");
18*19c3b8c2SApple OSS Distributions 	os_atomic_rmw_loop(&i, a, b, relaxed, {
19*19c3b8c2SApple OSS Distributions 		b = a;
20*19c3b8c2SApple OSS Distributions 	});
21*19c3b8c2SApple OSS Distributions 
22*19c3b8c2SApple OSS Distributions 	T_ASSERT_EQ(os_atomic_inc_orig(&old_i, relaxed), 0, "atomic inc");
23*19c3b8c2SApple OSS Distributions 	T_ASSERT_EQ(os_atomic_cmpxchg(&old_i, 1, 0, relaxed), true, "os_atomic_cmpxchg");
24*19c3b8c2SApple OSS Distributions 	os_atomic_rmw_loop(&old_i, a, b, relaxed, {
25*19c3b8c2SApple OSS Distributions 		b = a;
26*19c3b8c2SApple OSS Distributions 	});
27*19c3b8c2SApple OSS Distributions 
28*19c3b8c2SApple OSS Distributions 	T_ASSERT_EQ(os_atomic_inc_orig(&v_i, relaxed), 0, "atomic inc");
29*19c3b8c2SApple OSS Distributions 	T_ASSERT_EQ(os_atomic_cmpxchg(&v_i, 1, 0, relaxed), true, "os_atomic_cmpxchg");
30*19c3b8c2SApple OSS Distributions 	os_atomic_rmw_loop(&v_i, a, b, relaxed, {
31*19c3b8c2SApple OSS Distributions 		b = a;
32*19c3b8c2SApple OSS Distributions 	});
33*19c3b8c2SApple OSS Distributions }
34