libsanitizer/tsan/tsan_preinit.cpp

   1 //===-- tsan_preinit.cpp --------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file is a part of ThreadSanitizer.
  10 //
  11 // Call __tsan_init at the very early stage of process startup.
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "sanitizer_common/sanitizer_internal_defs.h"
  15 #include "tsan_interface.h"
  16
  17 #if SANITIZER_CAN_USE_PREINIT_ARRAY
  18
  19 // The symbol is called __local_tsan_preinit, because it's not intended to be
  20 // exported.
  21 // This code linked into the main executable when -fsanitize=thread is in
  22 // the link flags. It can only use exported interface functions.
  23 __attribute__((section(".preinit_array"), used))
  24 void (*__local_tsan_preinit)(void) = __tsan_init;
  25
  26 #endif