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Diffstat (limited to 'src/corelib/thread/qtsan_impl.h')
-rw-r--r-- | src/corelib/thread/qtsan_impl.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/corelib/thread/qtsan_impl.h b/src/corelib/thread/qtsan_impl.h new file mode 100644 index 0000000000..b28d65e65f --- /dev/null +++ b/src/corelib/thread/qtsan_impl.h @@ -0,0 +1,79 @@ +// Copyright (C) 2017 Intel Corporation. +// Copyright (C) 2022 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only + +#ifndef QTSAN_IMPL_H +#define QTSAN_IMPL_H + +#include <QtCore/qglobal.h> + +#if (__has_feature(thread_sanitizer) || defined(__SANITIZE_THREAD__)) && __has_include(<sanitizer/tsan_interface.h>) +# define QT_BUILDING_UNDER_TSAN +# include <sanitizer/tsan_interface.h> +#endif + +QT_BEGIN_NAMESPACE + +namespace QtTsan { +#ifdef QT_BUILDING_UNDER_TSAN +inline void futexAcquire(void *addr, void *addr2 = nullptr) +{ + // A futex call ensures total ordering on the futex words + // (in either success or failure of the call). Instruct TSAN accordingly, + // as TSAN does not understand the futex(2) syscall (or equivalent). + ::__tsan_acquire(addr); + if (addr2) + ::__tsan_acquire(addr2); +} + +inline void futexRelease(void *addr, void *addr2 = nullptr) +{ + if (addr2) + ::__tsan_release(addr2); + ::__tsan_release(addr); +} + +inline void mutexPreLock(void *addr, unsigned flags) +{ + ::__tsan_mutex_pre_lock(addr, flags); +} + +inline void mutexPostLock(void *addr, unsigned flags, int recursion) +{ + ::__tsan_mutex_post_lock(addr, flags, recursion); +} + +inline void mutexPreUnlock(void *addr, unsigned flags) +{ + ::__tsan_mutex_pre_unlock(addr, flags); +} + +inline void mutexPostUnlock(void *addr, unsigned flags) +{ + ::__tsan_mutex_post_unlock(addr, flags); +} + +enum : unsigned { + MutexWriteReentrant = ::__tsan_mutex_write_reentrant, + TryLock = ::__tsan_mutex_try_lock, + TryLockFailed = ::__tsan_mutex_try_lock_failed, +}; +#else +inline void futexAcquire(void *, void * = nullptr) {} +inline void futexRelease(void *, void * = nullptr) {} + +enum : unsigned { + MutexWriteReentrant, + TryLock, + TryLockFailed, +}; +inline void mutexPreLock(void *, unsigned) {} +inline void mutexPostLock(void *, unsigned, int) {} +inline void mutexPreUnlock(void *, unsigned) {} +inline void mutexPostUnlock(void *, unsigned) {} +#endif // QT_BUILDING_UNDER_TSAN +} // namespace QtTsan + +QT_END_NAMESPACE + +#endif // QTSAN_IMPL_H |