1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
* C Extension module to smoke test pyatomic.h API.
*
* This only tests basic functionality, not any synchronizing ordering.
*/
#include "parts.h"
// We define atomic bitwise operations on these types
#define FOR_BITWISE_TYPES(V) \
V(uint8, uint8_t) \
V(uint16, uint16_t) \
V(uint32, uint32_t) \
V(uint64, uint64_t) \
V(uintptr, uintptr_t)
// We define atomic addition on these types
#define FOR_ARITHMETIC_TYPES(V) \
FOR_BITWISE_TYPES(V) \
V(int, int) \
V(uint, unsigned int) \
V(int8, int8_t) \
V(int16, int16_t) \
V(int32, int32_t) \
V(int64, int64_t) \
V(intptr, intptr_t) \
V(ssize, Py_ssize_t)
// We define atomic load, store, exchange, and compare_exchange on these types
#define FOR_ALL_TYPES(V) \
FOR_ARITHMETIC_TYPES(V) \
V(ptr, void*)
#define IMPL_TEST_ADD(suffix, dtype) \
static PyObject * \
test_atomic_add_##suffix(PyObject *self, PyObject *obj) { \
dtype x = 0; \
assert(_Py_atomic_add_##suffix(&x, 1) == 0); \
assert(x == 1); \
assert(_Py_atomic_add_##suffix(&x, 2) == 1); \
assert(x == 3); \
assert(_Py_atomic_add_##suffix(&x, -2) == 3); \
assert(x == 1); \
assert(_Py_atomic_add_##suffix(&x, -1) == 1); \
assert(x == 0); \
assert(_Py_atomic_add_##suffix(&x, -1) == 0); \
assert(x == (dtype)-1); \
assert(_Py_atomic_add_##suffix(&x, -2) == (dtype)-1); \
assert(x == (dtype)-3); \
assert(_Py_atomic_add_##suffix(&x, 2) == (dtype)-3); \
assert(x == (dtype)-1); \
Py_RETURN_NONE; \
}
FOR_ARITHMETIC_TYPES(IMPL_TEST_ADD)
#define IMPL_TEST_COMPARE_EXCHANGE(suffix, dtype) \
static PyObject * \
test_atomic_compare_exchange_##suffix(PyObject *self, PyObject *obj) { \
dtype x = (dtype)0; \
dtype y = (dtype)1; \
dtype z = (dtype)2; \
assert(_Py_atomic_compare_exchange_##suffix(&x, &y, z) == 0); \
assert(x == 0); \
assert(y == 0); \
assert(_Py_atomic_compare_exchange_##suffix(&x, &y, z) == 1); \
assert(x == z); \
assert(y == 0); \
assert(_Py_atomic_compare_exchange_##suffix(&x, &y, z) == 0); \
assert(x == z); \
assert(y == z); \
Py_RETURN_NONE; \
}
FOR_ALL_TYPES(IMPL_TEST_COMPARE_EXCHANGE)
#define IMPL_TEST_EXCHANGE(suffix, dtype) \
static PyObject * \
test_atomic_exchange_##suffix(PyObject *self, PyObject *obj) { \
dtype x = (dtype)0; \
dtype y = (dtype)1; \
dtype z = (dtype)2; \
assert(_Py_atomic_exchange_##suffix(&x, y) == (dtype)0); \
assert(x == (dtype)1); \
assert(_Py_atomic_exchange_##suffix(&x, z) == (dtype)1); \
assert(x == (dtype)2); \
assert(_Py_atomic_exchange_##suffix(&x, y) == (dtype)2); \
assert(x == (dtype)1); \
Py_RETURN_NONE; \
}
FOR_ALL_TYPES(IMPL_TEST_EXCHANGE)
#define IMPL_TEST_LOAD_STORE(suffix, dtype) \
static PyObject * \
test_atomic_load_store_##suffix(PyObject *self, PyObject *obj) { \
dtype x = (dtype)0; \
dtype y = (dtype)1; \
dtype z = (dtype)2; \
assert(_Py_atomic_load_##suffix(&x) == (dtype)0); \
assert(x == (dtype)0); \
_Py_atomic_store_##suffix(&x, y); \
assert(_Py_atomic_load_##suffix(&x) == (dtype)1); \
assert(x == (dtype)1); \
_Py_atomic_store_##suffix##_relaxed(&x, z); \
assert(_Py_atomic_load_##suffix##_relaxed(&x) == (dtype)2); \
assert(x == (dtype)2); \
Py_RETURN_NONE; \
}
FOR_ALL_TYPES(IMPL_TEST_LOAD_STORE)
#define IMPL_TEST_AND_OR(suffix, dtype) \
static PyObject * \
test_atomic_and_or_##suffix(PyObject *self, PyObject *obj) { \
dtype x = (dtype)0; \
dtype y = (dtype)1; \
dtype z = (dtype)3; \
assert(_Py_atomic_or_##suffix(&x, z) == (dtype)0); \
assert(x == (dtype)3); \
assert(_Py_atomic_and_##suffix(&x, y) == (dtype)3); \
assert(x == (dtype)1); \
Py_RETURN_NONE; \
}
FOR_BITWISE_TYPES(IMPL_TEST_AND_OR)
static PyObject *
test_atomic_fences(PyObject *self, PyObject *obj) {
// Just make sure that the fences compile. We are not
// testing any synchronizing ordering.
_Py_atomic_fence_seq_cst();
_Py_atomic_fence_release();
Py_RETURN_NONE;
}
static PyObject *
test_atomic_release_acquire(PyObject *self, PyObject *obj) {
void *x = NULL;
void *y = &y;
assert(_Py_atomic_load_ptr_acquire(&x) == NULL);
_Py_atomic_store_ptr_release(&x, y);
assert(x == y);
assert(_Py_atomic_load_ptr_acquire(&x) == y);
Py_RETURN_NONE;
}
static PyObject *
test_atomic_load_store_int_release_acquire(PyObject *self, PyObject *obj) { \
int x = 0;
int y = 1;
int z = 2;
assert(_Py_atomic_load_int_acquire(&x) == 0);
_Py_atomic_store_int_release(&x, y);
assert(x == y);
assert(_Py_atomic_load_int_acquire(&x) == y);
_Py_atomic_store_int_release(&x, z);
assert(x == z);
assert(_Py_atomic_load_int_acquire(&x) == z);
Py_RETURN_NONE;
}
// NOTE: all tests should start with "test_atomic_" to be included
// in test_pyatomic.py
#define BIND_TEST_ADD(suffix, dtype) \
{"test_atomic_add_" #suffix, test_atomic_add_##suffix, METH_NOARGS},
#define BIND_TEST_COMPARE_EXCHANGE(suffix, dtype) \
{"test_atomic_compare_exchange_" #suffix, test_atomic_compare_exchange_##suffix, METH_NOARGS},
#define BIND_TEST_EXCHANGE(suffix, dtype) \
{"test_atomic_exchange_" #suffix, test_atomic_exchange_##suffix, METH_NOARGS},
#define BIND_TEST_LOAD_STORE(suffix, dtype) \
{"test_atomic_load_store_" #suffix, test_atomic_load_store_##suffix, METH_NOARGS},
#define BIND_TEST_AND_OR(suffix, dtype) \
{"test_atomic_and_or_" #suffix, test_atomic_and_or_##suffix, METH_NOARGS},
static PyMethodDef test_methods[] = {
FOR_ARITHMETIC_TYPES(BIND_TEST_ADD)
FOR_ALL_TYPES(BIND_TEST_COMPARE_EXCHANGE)
FOR_ALL_TYPES(BIND_TEST_EXCHANGE)
FOR_ALL_TYPES(BIND_TEST_LOAD_STORE)
FOR_BITWISE_TYPES(BIND_TEST_AND_OR)
{"test_atomic_fences", test_atomic_fences, METH_NOARGS},
{"test_atomic_release_acquire", test_atomic_release_acquire, METH_NOARGS},
{"test_atomic_load_store_int_release_acquire", test_atomic_load_store_int_release_acquire, METH_NOARGS},
{NULL, NULL} /* sentinel */
};
int
_PyTestCapi_Init_PyAtomic(PyObject *mod)
{
if (PyModule_AddFunctions(mod, test_methods) < 0) {
return -1;
}
return 0;
}
|
