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1 /**************************************************************************
2  *
3  * Copyright 2014 VMware, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 
28 
29 /* Force assertions, even on release builds. */
30 #undef NDEBUG
31 
32 
33 #include <stdint.h>
34 #include <inttypes.h>
35 #include <assert.h>
36 
37 #include "u_atomic.h"
38 
39 #ifdef _MSC_VER
40 #pragma warning( disable : 28112 ) /* Accessing a local variable via an Interlocked function */
41 #pragma warning( disable : 28113 ) /* A variable which is accessed via an Interlocked function must always be accessed via an Interlocked function */
42 #endif
43 
44 
45 /* Test only assignment-like operations, which are supported on all types */
46 #define test_atomic_assign(type, ones) \
47    static void test_atomic_assign_##type (void) { \
48       type v, r; \
49       \
50       p_atomic_set(&v, ones); \
51       assert(v == ones && "p_atomic_set"); \
52       \
53       r = p_atomic_read(&v); \
54       assert(r == ones && "p_atomic_read"); \
55       \
56       v = ones; \
57       r = p_atomic_cmpxchg(&v, 0, 1); \
58       assert(v == ones && "p_atomic_cmpxchg"); \
59       assert(r == ones && "p_atomic_cmpxchg"); \
60       r = p_atomic_cmpxchg(&v, ones, 0); \
61       assert(v == 0 && "p_atomic_cmpxchg"); \
62       assert(r == ones && "p_atomic_cmpxchg"); \
63       \
64       (void) r; \
65    }
66 
67 
68 /* Test arithmetic operations that are supported on 8 bits integer types */
69 #define test_atomic_8bits(type, ones) \
70    test_atomic_assign(type, ones) \
71    \
72    static void test_atomic_8bits_##type (void) { \
73       type v, r; \
74       \
75       test_atomic_assign_##type(); \
76       \
77       v = 23; \
78       p_atomic_add(&v, 42); \
79       r = p_atomic_read(&v); \
80       assert(r == 65 && "p_atomic_add"); \
81       \
82       (void) r; \
83    }
84 
85 
86 /* Test all operations */
87 #define test_atomic(type, ones) \
88    test_atomic_8bits(type, ones) \
89    \
90    static void test_atomic_##type (void) { \
91       type v, r; \
92       bool b; \
93       \
94       test_atomic_8bits_##type(); \
95       \
96       v = 2; \
97       b = p_atomic_dec_zero(&v); \
98       assert(v == 1 && "p_atomic_dec_zero"); \
99       assert(b == false && "p_atomic_dec_zero"); \
100       b = p_atomic_dec_zero(&v); \
101       assert(v == 0 && "p_atomic_dec_zero"); \
102       assert(b == true && "p_atomic_dec_zero"); \
103       b = p_atomic_dec_zero(&v); \
104       assert(v == ones && "p_atomic_dec_zero"); \
105       assert(b == false && "p_atomic_dec_zero"); \
106       \
107       v = ones; \
108       p_atomic_inc(&v); \
109       assert(v == 0 && "p_atomic_inc"); \
110       \
111       v = ones; \
112       r = p_atomic_inc_return(&v); \
113       assert(v == 0 && "p_atomic_inc_return"); \
114       assert(r == v && "p_atomic_inc_return"); \
115       \
116       v = 0; \
117       p_atomic_dec(&v); \
118       assert(v == ones && "p_atomic_dec"); \
119       \
120       v = 0; \
121       r = p_atomic_dec_return(&v); \
122       assert(v == ones && "p_atomic_dec_return"); \
123       assert(r == v && "p_atomic_dec_return"); \
124       \
125       (void) r; \
126       (void) b; \
127    }
128 
129 
130 test_atomic(int, -1)
131 test_atomic(unsigned, ~0U)
132 
133 test_atomic(int16_t, INT16_C(-1))
134 test_atomic(uint16_t, UINT16_C(0xffff))
135 test_atomic(int32_t, INT32_C(-1))
136 test_atomic(uint32_t, UINT32_C(0xffffffff))
137 test_atomic(int64_t, INT64_C(-1))
138 test_atomic(uint64_t, UINT64_C(0xffffffffffffffff))
139 
140 test_atomic_8bits(int8_t, INT8_C(-1))
141 test_atomic_8bits(uint8_t, UINT8_C(0xff))
test_atomic_assign(bool,true)142 test_atomic_assign(bool, true)
143 
144 int
145 main()
146 {
147    test_atomic_int();
148    test_atomic_unsigned();
149 
150    test_atomic_int16_t();
151    test_atomic_uint16_t();
152    test_atomic_int32_t();
153    test_atomic_uint32_t();
154    test_atomic_int64_t();
155    test_atomic_uint64_t();
156 
157    test_atomic_8bits_int8_t();
158    test_atomic_8bits_uint8_t();
159    test_atomic_assign_bool();
160 
161    return 0;
162 }
163