| 1 | /* |
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| 2 | * Copyright (C) 2015 The Qt Company Ltd. |
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| 3 | * Copyright (C) 2015 Konstantin Ritt |
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| 4 | * |
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| 5 | * Permission is hereby granted, without written agreement and without |
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| 6 | * license or royalty fees, to use, copy, modify, and distribute this |
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| 7 | * software and its documentation for any purpose, provided that the |
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| 8 | * above copyright notice and the following two paragraphs appear in |
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| 9 | * all copies of this software. |
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| 10 | * |
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| 11 | * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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| 12 | * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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| 13 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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| 14 | * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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| 15 | * DAMAGE. |
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| 16 | * |
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| 17 | * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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| 18 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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| 19 | * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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| 20 | * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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| 21 | * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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| 25 | #include <QtCore/qatomic.h> |
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| 26 | |
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| 27 | QT_USE_NAMESPACE |
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| 28 | |
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| 29 | namespace { |
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| 30 | |
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| 31 | // We need to cast hb_atomic_int_t to QAtomicInt and pointers to |
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| 32 | // QAtomicPointer instead of using QAtomicOps, otherwise we get a failed |
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| 33 | // overload resolution of the template arguments for testAndSetOrdered. |
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| 34 | template <typename T> |
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| 35 | inline QAtomicPointer<T> *makeAtomicPointer(T * const &ptr) |
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| 36 | { |
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| 37 | return reinterpret_cast<QAtomicPointer<T> *>(const_cast<T **>(&ptr)); |
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| 38 | } |
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| 39 | |
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| 40 | } // namespace |
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| 41 | |
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| 42 | typedef int hb_atomic_int_impl_t; |
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| 43 | #define HB_ATOMIC_INT_IMPL_INIT(V) (V) |
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| 44 | #define hb_atomic_int_impl_add(AI, V) reinterpret_cast<QAtomicInt &>(AI).fetchAndAddOrdered(V) |
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| 45 | |
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| 46 | #define hb_atomic_ptr_impl_get(P) makeAtomicPointer(*(P))->loadAcquire() |
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| 47 | #define hb_atomic_ptr_impl_cmpexch(P,O,N) makeAtomicPointer(*(P))->testAndSetOrdered((O), (N)) |
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| 48 | |
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