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
130test_atomic(int, -1)
131test_atomic(unsigned, ~0U)
132
133test_atomic(int16_t, INT16_C(-1))
134test_atomic(uint16_t, UINT16_C(0xffff))
135test_atomic(int32_t, INT32_C(-1))
136test_atomic(uint32_t, UINT32_C(0xffffffff))
137test_atomic(int64_t, INT64_C(-1))
138test_atomic(uint64_t, UINT64_C(0xffffffffffffffff))
139
140test_atomic_8bits(int8_t, INT8_C(-1))
141test_atomic_8bits(uint8_t, UINT8_C(0xff))
142test_atomic_assign(bool, true)
143
144int
145main()
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