rtsan_assertions.h

//===--- rtsan_assertions.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
//
//===----------------------------------------------------------------------===//
//
// Part of the RealtimeSanitizer runtime library
//
//===----------------------------------------------------------------------===//

#pragma once

#include "rtsan/rtsan.h"
#include "rtsan/rtsan_context.h"
#include "rtsan/rtsan_diagnostics.h"
#include "rtsan/rtsan_stats.h"
#include "rtsan/rtsan_suppressions.h"

#include "sanitizer_common/sanitizer_stacktrace.h"

namespace __rtsan {

template <typename OnViolationAction>
void ExpectNotRealtime(Context &context, const DiagnosticsInfo &info,
                       OnViolationAction &&OnViolation) {
  CHECK(__rtsan_is_initialized());
  if (context.InRealtimeContext() && !context.IsBypassed()) {
    ScopedBypass sb{context};

    if (IsFunctionSuppressed(info.func_name)) {
      IncrementSuppressedCount();
      return;
    }

    __sanitizer::BufferedStackTrace stack;

    // We use the unwind_on_fatal flag here because of precedent with other
    // sanitizers, this action is not necessarily fatal if halt_on_error=false
    stack.Unwind(info.pc, info.bp, nullptr,
                 __sanitizer::common_flags()->fast_unwind_on_fatal);

    if (IsStackTraceSuppressed(stack)) {
      IncrementSuppressedCount();
      return;
    }

    OnViolation(stack, info);
  }
}

} // namespace __rtsan