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41
42 #ifndef QATOMIC_INTEGRITY_H
43 #define QATOMIC_INTEGRITY_H
44
45 #include <INTEGRITY.h>
46
47 QT_BEGIN_HEADER
48
49 QT_BEGIN_NAMESPACE
50
51 #define qt_pp2addrp(a) reinterpret_cast<Address *>(const_cast<T **>(a))
52 #define qt_ip2addrp(a) reinterpret_cast<Address *>(const_cast<int *>(a))
53 #define qt_p2addrp(a) reinterpret_cast<Address *>(a)
54 #define qt_addr(a) reinterpret_cast<Address>(a)
55
56
57 #define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE
58
isReferenceCountingNative()59 inline bool QBasicAtomicInt::isReferenceCountingNative()
60 { return true; }
61
62 #define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_WAIT_FREE
63
isReferenceCountingWaitFree()64 inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
65 { return true; }
66
67 #define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE
68
isTestAndSetNative()69 inline bool QBasicAtomicInt::isTestAndSetNative()
70 { return true; }
71
72 #define Q_ATOMIC_INT_TEST_AND_SET_IS_WAIT_FREE
73
isTestAndSetWaitFree()74 inline bool QBasicAtomicInt::isTestAndSetWaitFree()
75 { return true; }
76
77 #define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
78
isFetchAndStoreNative()79 inline bool QBasicAtomicInt::isFetchAndStoreNative()
80 { return true; }
81
82 #define Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE
83
isFetchAndStoreWaitFree()84 inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
85 { return true; }
86
87 #define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE
88
isFetchAndAddNative()89 inline bool QBasicAtomicInt::isFetchAndAddNative()
90 { return true; }
91
92 #define Q_ATOMIC_INT_FETCH_AND_ADD_IS_WAIT_FREE
93
isFetchAndAddWaitFree()94 inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
95 { return true; }
96
97 #define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
98
99 template <typename T>
isTestAndSetNative()100 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
101 { return true; }
102
103 #define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_WAIT_FREE
104
105 template <typename T>
isTestAndSetWaitFree()106 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
107 { return true; }
108
109 #define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE
110
111 template <typename T>
isFetchAndStoreNative()112 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
113 { return true; }
114
115 #define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE
116
117 template <typename T>
isFetchAndStoreWaitFree()118 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
119 { return true; }
120
121 #define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE
122
123 template <typename T>
isFetchAndAddNative()124 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
125 { return true; }
126
127 #define Q_ATOMIC_POINTER_TEST_AND_SET_IS_WAIT_FREE
128
129 template <typename T>
isFetchAndAddWaitFree()130 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
131 { return true; }
132
133 // Reference counting
134
ref()135 inline bool QBasicAtomicInt::ref()
136 {
137 int old_value;
138 AtomicModify(qt_ip2addrp(&_q_value), qt_ip2addrp(&old_value), 0, 1U);
139 return _q_value != 0;
140 }
141
deref()142 inline bool QBasicAtomicInt::deref()
143 {
144 int old_value;
145 AtomicModify(qt_ip2addrp(&_q_value), qt_ip2addrp(&old_value), 0, -1U);
146 return _q_value != 0;
147 }
148
149 // Test and set for integers
150
testAndSetOrdered(int expectedValue,int newValue)151 inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
152 {
153 return TestAndSet(qt_ip2addrp(&_q_value), expectedValue, newValue) == Success;
154 }
155
testAndSetRelaxed(int expectedValue,int newValue)156 inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
157 {
158 return testAndSetOrdered(expectedValue, newValue);
159 }
160
testAndSetAcquire(int expectedValue,int newValue)161 inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
162 {
163 return testAndSetOrdered(expectedValue, newValue);
164 }
165
testAndSetRelease(int expectedValue,int newValue)166 inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
167 {
168 return testAndSetOrdered(expectedValue, newValue);
169 }
170
171 // Fetch and store for integers
172
fetchAndStoreOrdered(int newValue)173 inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
174 {
175 int old_value;
176 do {
177 old_value = _q_value;
178 } while (TestAndSet(qt_ip2addrp(&_q_value), old_value, newValue) != Success);
179 return old_value;
180 }
181
fetchAndStoreRelaxed(int newValue)182 inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
183 {
184 return fetchAndStoreOrdered(newValue);
185 }
186
fetchAndStoreAcquire(int newValue)187 inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
188 {
189 return fetchAndStoreOrdered(newValue);
190 }
191
fetchAndStoreRelease(int newValue)192 inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
193 {
194 return fetchAndStoreOrdered(newValue);
195 }
196
197 // Fetch and add for integers
198
fetchAndAddOrdered(int valueToAdd)199 inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
200 {
201 int old_value;
202 AtomicModify(qt_ip2addrp(&_q_value), qt_ip2addrp(&old_value), 0, valueToAdd);
203
204 return old_value;
205 }
206
fetchAndAddRelaxed(int valueToAdd)207 inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
208 {
209 return fetchAndAddOrdered(valueToAdd);
210 }
211
fetchAndAddAcquire(int valueToAdd)212 inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
213 {
214 return fetchAndAddOrdered(valueToAdd);
215 }
216
fetchAndAddRelease(int valueToAdd)217 inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
218 {
219 return fetchAndAddOrdered(valueToAdd);
220 }
221
222 // Test and set for pointers
223
224 template <typename T>
testAndSetOrdered(T * expectedValue,T * newValue)225 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
226 {
227 return TestAndSet(qt_pp2addrp(&_q_value), qt_addr(expectedValue), qt_addr(newValue)) == Success;
228 }
229
230 template <typename T>
testAndSetRelaxed(T * expectedValue,T * newValue)231 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
232 {
233 return testAndSetOrdered(expectedValue, newValue);
234 }
235
236 template <typename T>
testAndSetAcquire(T * expectedValue,T * newValue)237 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
238 {
239 return testAndSetOrdered(expectedValue, newValue);
240 }
241
242 template <typename T>
testAndSetRelease(T * expectedValue,T * newValue)243 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
244 {
245 return testAndSetOrdered(expectedValue, newValue);
246 }
247
248 // Fetch and store for pointers
249
250 template <typename T>
fetchAndStoreOrdered(T * newValue)251 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
252 {
253 Address old_value;
254
255 do {
256 old_value = qt_addr(_q_value);
257 } while (TestAndSet(qt_pp2addrp(&_q_value), old_value, qt_addr(newValue)) != Success);
258
259 return reinterpret_cast<T *>(old_value);
260 }
261
262 template <typename T>
fetchAndStoreRelaxed(T * newValue)263 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
264 {
265 return fetchAndStoreOrdered(newValue);
266 }
267
268 template <typename T>
fetchAndStoreAcquire(T * newValue)269 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
270 {
271 return fetchAndStoreOrdered(newValue);
272 }
273
274 template <typename T>
fetchAndStoreRelease(T * newValue)275 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
276 {
277 return fetchAndStoreOrdered(newValue);
278 }
279
280 // Fetch and add for pointers
281
282 template <typename T>
fetchAndAddOrdered(qptrdiff valueToAdd)283 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
284 {
285 Address old_value;
286 AtomicModify(qt_pp2addrp(&_q_value), &old_value, 0, valueToAdd * sizeof(T));
287
288 return reinterpret_cast<T *>(old_value);
289 }
290
291 template <typename T>
fetchAndAddRelaxed(qptrdiff valueToAdd)292 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
293 {
294 return fetchAndAddOrdered(valueToAdd);
295 }
296
297 template <typename T>
fetchAndAddAcquire(qptrdiff valueToAdd)298 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
299 {
300 return fetchAndAddOrdered(valueToAdd);
301 }
302
303 template <typename T>
fetchAndAddRelease(qptrdiff valueToAdd)304 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
305 {
306 return fetchAndAddOrdered(valueToAdd);
307 }
308
309 QT_END_NAMESPACE
310
311 QT_END_HEADER
312
313 #endif // QATOMIC_INTEGRITY_H
314