1 //
2 // Tests for
3 //  ~intrusive_shared_ptr();
4 //
5 
6 #include <libkern/c++/intrusive_shared_ptr.h>
7 #include <darwintest.h>
8 #include <darwintest_utils.h>
9 #include "test_policy.h"
10 
11 struct T { int i; };
12 
13 T_DECL(dtor, "intrusive_shared_ptr.dtor", T_META_TAG_VM_PREFERRED) {    // Destroy a non-null shared pointer
14 	{
15 		T obj{0};
16 		test_policy::retain_count = 3;
17 
18 		{
19 			libkern::intrusive_shared_ptr<T, test_policy> ptr(&obj, libkern::no_retain);
20 			CHECK(test_policy::retain_count == 3);
21 		}
22 
23 		CHECK(test_policy::retain_count == 2);
24 	}
25 
26 	// Destroy a null shared pointer
27 	{
28 		test_policy::retain_count = 3;
29 
30 		{
31 			libkern::intrusive_shared_ptr<T, test_policy> ptr = nullptr;
32 			CHECK(test_policy::retain_count == 3);
33 		}
34 
35 		CHECK(test_policy::retain_count == 3); // not decremented
36 	}
37 }
38