1.7.3Please send us your comment about this page
00001 /**************************************************************************** 00002 ** 00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). 00004 ** All rights reserved. 00005 ** Contact: Nokia Corporation (qt-info@nokia.com) 00006 ** 00007 ** This file is part of the QtCore module of the Qt Toolkit. 00008 ** 00009 ** $QT_BEGIN_LICENSE:LGPL$ 00010 ** Commercial Usage 00011 ** Licensees holding valid Qt Commercial licenses may use this file in 00012 ** accordance with the Qt Commercial License Agreement provided with the 00013 ** Software or, alternatively, in accordance with the terms contained in 00014 ** a written agreement between you and Nokia. 00015 ** 00016 ** GNU Lesser General Public License Usage 00017 ** Alternatively, this file may be used under the terms of the GNU Lesser 00018 ** General Public License version 2.1 as published by the Free Software 00019 ** Foundation and appearing in the file LICENSE.LGPL included in the 00020 ** packaging of this file. Please review the following information to 00021 ** ensure the GNU Lesser General Public License version 2.1 requirements 00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 00023 ** 00024 ** In addition, as a special exception, Nokia gives you certain additional 00025 ** rights. These rights are described in the Nokia Qt LGPL Exception 00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module. 00027 ** 00028 ** GNU General Public License Usage 00029 ** Alternatively, this file may be used under the terms of the GNU 00030 ** General Public License version 3.0 as published by the Free Software 00031 ** Foundation and appearing in the file LICENSE.GPL included in the 00032 ** packaging of this file. Please review the following information to 00033 ** ensure the GNU General Public License version 3.0 requirements will be 00034 ** met: http://www.gnu.org/copyleft/gpl.html. 00035 ** 00036 ** If you have questions regarding the use of this file, please contact 00037 ** Nokia at qt-info@nokia.com. 00038 ** $QT_END_LICENSE$ 00039 ** 00040 ****************************************************************************/ 00041 00042 #ifndef QATOMIC_S390_H 00043 #define QATOMIC_S390_H 00044 00045 QT_BEGIN_HEADER 00046 00047 QT_BEGIN_NAMESPACE 00048 00049 #define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE 00050 00051 inline bool QBasicAtomicInt::isReferenceCountingNative() 00052 { return true; } 00053 inline bool QBasicAtomicInt::isReferenceCountingWaitFree() 00054 { return false; } 00055 00056 #define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE 00057 00058 inline bool QBasicAtomicInt::isTestAndSetNative() 00059 { return true; } 00060 inline bool QBasicAtomicInt::isTestAndSetWaitFree() 00061 { return false; } 00062 00063 #define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE 00064 00065 inline bool QBasicAtomicInt::isFetchAndStoreNative() 00066 { return true; } 00067 inline bool QBasicAtomicInt::isFetchAndStoreWaitFree() 00068 { return false; } 00069 00070 #define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE 00071 00072 inline bool QBasicAtomicInt::isFetchAndAddNative() 00073 { return true; } 00074 inline bool QBasicAtomicInt::isFetchAndAddWaitFree() 00075 { return false; } 00076 00077 #define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE 00078 00079 template <typename T> 00080 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative() 00081 { return true; } 00082 template <typename T> 00083 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree() 00084 { return false; } 00085 00086 #define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE 00087 00088 template <typename T> 00089 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative() 00090 { return true; } 00091 template <typename T> 00092 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree() 00093 { return false; } 00094 00095 #define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE 00096 00097 template <typename T> 00098 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative() 00099 { return true; } 00100 template <typename T> 00101 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree() 00102 { return false; } 00103 00104 #ifdef __GNUC__ 00105 #define __GNU_EXTENSION __extension__ 00106 #else 00107 #define __GNU_EXTENSION 00108 #endif 00109 00110 #define __CS_LOOP(ptr, op_val, op_string, pre, post) __GNU_EXTENSION ({ \ 00111 volatile int old_val, new_val; \ 00112 __asm__ __volatile__(pre \ 00113 " l %0,0(%3)\n" \ 00114 "0: lr %1,%0\n" \ 00115 op_string " %1,%4\n" \ 00116 " cs %0,%1,0(%3)\n" \ 00117 " jl 0b\n" \ 00118 post \ 00119 : "=&d" (old_val), "=&d" (new_val), \ 00120 "=m" (*ptr) \ 00121 : "a" (ptr), "d" (op_val), \ 00122 "m" (*ptr) \ 00123 : "cc", "memory" ); \ 00124 new_val; \ 00125 }) 00126 00127 #define __CS_OLD_LOOP(ptr, op_val, op_string, pre, post ) __GNU_EXTENSION ({ \ 00128 volatile int old_val, new_val; \ 00129 __asm__ __volatile__(pre \ 00130 " l %0,0(%3)\n" \ 00131 "0: lr %1,%0\n" \ 00132 op_string " %1,%4\n" \ 00133 " cs %0,%1,0(%3)\n" \ 00134 " jl 0b\n" \ 00135 post \ 00136 : "=&d" (old_val), "=&d" (new_val), \ 00137 "=m" (*ptr) \ 00138 : "a" (ptr), "d" (op_val), \ 00139 "m" (*ptr) \ 00140 : "cc", "memory" ); \ 00141 old_val; \ 00142 }) 00143 00144 #ifdef __s390x__ 00145 #define __CSG_OLD_LOOP(ptr, op_val, op_string, pre, post) __GNU_EXTENSION ({ \ 00146 long old_val, new_val; \ 00147 __asm__ __volatile__(pre \ 00148 " lg %0,0(%3)\n" \ 00149 "0: lgr %1,%0\n" \ 00150 op_string " %1,%4\n" \ 00151 " csg %0,%1,0(%3)\n" \ 00152 " jl 0b\n" \ 00153 post \ 00154 : "=&d" (old_val), "=&d" (new_val), \ 00155 "=m" (*ptr) \ 00156 : "a" (ptr), "d" (op_val), \ 00157 "m" (*ptr) \ 00158 : "cc", "memory" ); \ 00159 old_val; \ 00160 }) 00161 #endif 00162 00163 inline bool QBasicAtomicInt::ref() 00164 { 00165 return __CS_LOOP(&_q_value, 1, "ar", "", "") != 0; 00166 } 00167 00168 inline bool QBasicAtomicInt::deref() 00169 { 00170 return __CS_LOOP(&_q_value, 1, "sr", "", "") != 0; 00171 } 00172 00173 inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue) 00174 { 00175 int retval; 00176 __asm__ __volatile__( 00177 " lr %0,%3\n" 00178 " cs %0,%4,0(%2)\n" 00179 " ipm %0\n" 00180 " srl %0,28\n" 00181 "0:" 00182 : "=&d" (retval), "=m" (_q_value) 00183 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00184 "m" (_q_value) : "cc", "memory" ); 00185 return retval == 0; 00186 } 00187 00188 inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue) 00189 { 00190 int retval; 00191 __asm__ __volatile__( 00192 " lr %0,%3\n" 00193 " cs %0,%4,0(%2)\n" 00194 " ipm %0\n" 00195 " srl %0,28\n" 00196 "0:\n" 00197 " bcr 15,0\n" 00198 : "=&d" (retval), "=m" (_q_value) 00199 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00200 "m" (_q_value) : "cc", "memory" ); 00201 return retval == 0; 00202 } 00203 00204 inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue) 00205 { 00206 int retval; 00207 __asm__ __volatile__( 00208 " bcr 15,0\n" 00209 " lr %0,%3\n" 00210 " cs %0,%4,0(%2)\n" 00211 " ipm %0\n" 00212 " srl %0,28\n" 00213 "0:" 00214 : "=&d" (retval), "=m" (_q_value) 00215 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00216 "m" (_q_value) : "cc", "memory" ); 00217 return retval == 0; 00218 } 00219 00220 inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue) 00221 { 00222 return testAndSetAcquire(expectedValue, newValue); 00223 } 00224 00225 inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue) 00226 { 00227 return __CS_OLD_LOOP(&_q_value, newValue, "lr", "", ""); 00228 } 00229 00230 inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue) 00231 { 00232 return __CS_OLD_LOOP(&_q_value, newValue, "lr", "", "bcr 15,0\n"); 00233 } 00234 00235 inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue) 00236 { 00237 return __CS_OLD_LOOP(&_q_value, newValue, "lr", "bcr 15,0\n", ""); 00238 } 00239 00240 inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue) 00241 { 00242 return fetchAndStoreAcquire(newValue); 00243 } 00244 00245 inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd) 00246 { 00247 return fetchAndAddOrdered(valueToAdd); 00248 } 00249 00250 inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd) 00251 { 00252 return fetchAndAddOrdered(valueToAdd); 00253 } 00254 00255 inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd) 00256 { 00257 return fetchAndAddOrdered(valueToAdd); 00258 } 00259 00260 inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd) 00261 { 00262 return __CS_OLD_LOOP(&_q_value, valueToAdd, "ar", "", "bcr 15,0\n"); 00263 } 00264 00265 template <typename T> 00266 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue) 00267 { 00268 int retval; 00269 00270 #ifndef __s390x__ 00271 __asm__ __volatile__( 00272 " lr %0,%3\n" 00273 " cs %0,%4,0(%2)\n" 00274 " ipm %0\n" 00275 " srl %0,28\n" 00276 "0:" 00277 : "=&d" (retval), "=m" (_q_value) 00278 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00279 "m" (_q_value) : "cc", "memory" ); 00280 #else 00281 __asm__ __volatile__( 00282 " lgr %0,%3\n" 00283 " csg %0,%4,0(%2)\n" 00284 " ipm %0\n" 00285 " srl %0,28\n" 00286 "0:" 00287 : "=&d" (retval), "=m" (_q_value) 00288 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00289 "m" (_q_value) : "cc", "memory" ); 00290 #endif 00291 00292 return retval == 0; 00293 } 00294 00295 template <typename T> 00296 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue) 00297 { 00298 int retval; 00299 00300 #ifndef __s390x__ 00301 __asm__ __volatile__( 00302 " lr %0,%3\n" 00303 " cs %0,%4,0(%2)\n" 00304 " ipm %0\n" 00305 " srl %0,28\n" 00306 "0:\n" 00307 " bcr 15,0\n" 00308 : "=&d" (retval), "=m" (_q_value) 00309 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00310 "m" (_q_value) : "cc", "memory" ); 00311 #else 00312 __asm__ __volatile__( 00313 " lgr %0,%3\n" 00314 " csg %0,%4,0(%2)\n" 00315 " ipm %0\n" 00316 " srl %0,28\n" 00317 "0:\n" 00318 " bcr 15,0\n" 00319 : "=&d" (retval), "=m" (_q_value) 00320 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00321 "m" (_q_value) : "cc", "memory" ); 00322 #endif 00323 00324 return retval == 0; 00325 } 00326 00327 template <typename T> 00328 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue) 00329 { 00330 int retval; 00331 00332 #ifndef __s390x__ 00333 __asm__ __volatile__( 00334 " bcr 15,0\n" 00335 " lr %0,%3\n" 00336 " cs %0,%4,0(%2)\n" 00337 " ipm %0\n" 00338 " srl %0,28\n" 00339 "0:" 00340 : "=&d" (retval), "=m" (_q_value) 00341 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00342 "m" (_q_value) : "cc", "memory" ); 00343 #else 00344 __asm__ __volatile__( 00345 " bcr 15,0\n" 00346 " lgr %0,%3\n" 00347 " csg %0,%4,0(%2)\n" 00348 " ipm %0\n" 00349 " srl %0,28\n" 00350 "0:" 00351 : "=&d" (retval), "=m" (_q_value) 00352 : "a" (&_q_value), "d" (expectedValue) , "d" (newValue), 00353 "m" (_q_value) : "cc", "memory" ); 00354 #endif 00355 00356 return retval == 0; 00357 } 00358 00359 template <typename T> 00360 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue) 00361 { 00362 return testAndSetAcquire(expectedValue, newValue); 00363 } 00364 00365 template <typename T> 00366 Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue) 00367 { 00368 #ifndef __s390x__ 00369 return (T*)__CS_OLD_LOOP(&_q_value, (int)newValue, "lr", "", ""); 00370 #else 00371 return (T*)__CSG_OLD_LOOP(&_q_value, (long)newValue, "lgr", "", ""); 00372 #endif 00373 } 00374 00375 template <typename T> 00376 Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue) 00377 { 00378 #ifndef __s390x__ 00379 return (T*)__CS_OLD_LOOP(&_q_value, (int)newValue, "lr", "", "bcr 15,0 \n"); 00380 #else 00381 return (T*)__CSG_OLD_LOOP(&_q_value, (long)newValue, "lgr", "", "bcr 15,0 \n"); 00382 #endif 00383 } 00384 00385 template <typename T> 00386 Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue) 00387 { 00388 #ifndef __s390x__ 00389 return (T*)__CS_OLD_LOOP(&_q_value, (int)newValue, "lr", "bcr 15,0 \n", ""); 00390 #else 00391 return (T*)__CSG_OLD_LOOP(&_q_value, (long)newValue, "lgr", "bcr 15,0\n", ""); 00392 #endif 00393 } 00394 00395 template <typename T> 00396 Q_INLINE_TEMPLATE T* QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue) 00397 { 00398 return fetchAndStoreAcquire(newValue); 00399 } 00400 00401 00402 template <typename T> 00403 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd) 00404 { 00405 return fetchAndAddOrdered(valueToAdd); 00406 } 00407 00408 template <typename T> 00409 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd) 00410 { 00411 return fetchAndAddOrdered(valueToAdd); 00412 } 00413 00414 template <typename T> 00415 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd) 00416 { 00417 return fetchAndAddOrdered(valueToAdd); 00418 } 00419 00420 #undef __GNU_EXTENSION 00421 00422 QT_END_NAMESPACE 00423 00424 QT_END_HEADER 00425 00426 #endif // QATOMIC_S390_H