[clang] [compiler-rt] [compiler-rt] Realtime Sanitizer: Introduce RADSan backend (PR #92460)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,50 @@
+//===--- radsan.h - Realtime Sanitizer --------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//===----------------------------------------------------------------------===//
+
+#pragma once
+
+#include "sanitizer_common/sanitizer_internal_defs.h"
+
+extern "C" {
+
+/**  Initialise radsan interceptors.
+
+  A call to this method is added to the preinit array on Linux systems.
+*/
+SANITIZER_INTERFACE_ATTRIBUTE void radsan_init();
+
+/** Enter real-time context.
+
+  When in a real-time context, RADSan interceptors will error if realtime
+  violations are detected. Calls to this method are injected at the code
+  generation stage when RADSan is enabled.
+*/
+SANITIZER_INTERFACE_ATTRIBUTE void radsan_realtime_enter();
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MaskRay wrote:

Use `__*` names to avoid conflicts with user code. Use `//`.

If there are user APIs, define them at `include/sanitizer/*_interface.h`

https://github.com/llvm/llvm-project/pull/92460