libc/src/stdlib/linux/abort.cpp

   1 //===-- Implementation of abort -------------------------------------------===//
   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 #include "src/__support/common.h"
  10 #include "src/signal/raise.h"
  11 #include "src/stdlib/_Exit.h"
  12
  13 #include "src/stdlib/abort.h"
  14
  15 namespace LIBC_NAMESPACE {
  16
  17 LLVM_LIBC_FUNCTION(void, abort, ()) {
  18   // TODO: When sigprocmask and sigaction land:
  19   // Unblock SIGABRT, raise it, if it was ignored or the handler returned,
  20   // change its action to SIG_DFL, raise it again.
  21   // TODO: When C11 mutexes land:
  22   // Acquire recursive mutex (in case the current signal handler for SIGABRT
  23   // itself calls abort we don't want to deadlock on the same thread trying
  24   // to acquire it's own mutex.)
  25   LIBC_NAMESPACE::raise(SIGABRT);
  26   LIBC_NAMESPACE::raise(SIGKILL);
  27   LIBC_NAMESPACE::_Exit(127);
  28 }
  29
  30 } // namespace LIBC_NAMESPACE