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