| 1 | /* |
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| 2 | SPDX-FileCopyrightText: 2011 Will Stephenson <wstephenson@kde.org> |
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| 3 | |
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| 4 | SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL |
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| 5 | */ |
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| 6 | |
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| 7 | #ifndef NETWORKMANAGERQT_MACROS_H |
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| 8 | #define NETWORKMANAGERQT_MACROS_H |
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| 9 | |
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| 10 | #define NM_GLOBAL_STATIC_STRUCT_NAME(NAME) |
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| 11 | typedef void (*NmCleanUpFunction)(); |
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| 12 | class NmCleanUpGlobalStatic |
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| 13 | { |
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| 14 | public: |
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| 15 | NmCleanUpFunction func; |
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| 16 | |
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| 17 | inline ~NmCleanUpGlobalStatic() |
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| 18 | { |
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| 19 | func(); |
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| 20 | } |
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| 21 | }; |
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| 22 | |
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| 23 | #define NM_GLOBAL_STATIC(TYPE, NAME) NM_GLOBAL_STATIC_WITH_ARGS(TYPE, NAME, ()) |
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| 24 | |
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| 25 | /* clang-format off */ |
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| 26 | #define NM_GLOBAL_STATIC_WITH_ARGS(TYPE, NAME, ARGS) \ |
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| 27 | static QBasicAtomicPointer<TYPE > _nm_static_##NAME = Q_BASIC_ATOMIC_INITIALIZER(0); \ |
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| 28 | static bool _nm_static_##NAME##_destroyed; \ |
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| 29 | static struct NM_GLOBAL_STATIC_STRUCT_NAME(NAME) \ |
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| 30 | { \ |
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| 31 | inline bool isDestroyed() const \ |
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| 32 | { \ |
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| 33 | return _nm_static_##NAME##_destroyed; \ |
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| 34 | } \ |
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| 35 | inline bool exists() const \ |
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| 36 | { \ |
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| 37 | return _nm_static_##NAME != 0; \ |
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| 38 | } \ |
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| 39 | inline operator TYPE*() \ |
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| 40 | { \ |
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| 41 | return operator->(); \ |
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| 42 | } \ |
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| 43 | inline TYPE *operator->() \ |
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| 44 | { \ |
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| 45 | if (!_nm_static_##NAME) { \ |
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| 46 | if (isDestroyed()) { \ |
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| 47 | qFatal("Fatal Error: Accessed global static '%s *%s()' after destruction. " \ |
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| 48 | "Defined at %s:%d", #TYPE, #NAME, __FILE__, __LINE__); \ |
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| 49 | } \ |
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| 50 | TYPE *x = new TYPE ARGS; \ |
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| 51 | if (!_nm_static_##NAME.testAndSetOrdered(0, x) \ |
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| 52 | && _nm_static_##NAME != x ) { \ |
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| 53 | delete x; \ |
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| 54 | } else { \ |
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| 55 | static NmCleanUpGlobalStatic cleanUpObject = { destroy }; \ |
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| 56 | } \ |
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| 57 | } \ |
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| 58 | return _nm_static_##NAME; \ |
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| 59 | } \ |
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| 60 | inline TYPE &operator*() \ |
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| 61 | { \ |
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| 62 | return *operator->(); \ |
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| 63 | } \ |
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| 64 | static void destroy() \ |
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| 65 | { \ |
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| 66 | _nm_static_##NAME##_destroyed = true; \ |
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| 67 | TYPE *x = _nm_static_##NAME; \ |
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| 68 | _nm_static_##NAME = 0; \ |
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| 69 | delete x; \ |
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| 70 | } \ |
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| 71 | } NAME; |
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| 72 | /* clang-format on */ |
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| 73 | |
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| 74 | #endif |
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| 75 | |
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