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/__support/macros/config.h" 11 #include "src/signal/raise.h" 12 #include "src/stdlib/_Exit.h" 13 14 #include "src/stdlib/abort.h" 15 16 namespace LIBC_NAMESPACE_DECL { 17 18 LLVM_LIBC_FUNCTION(void, abort, ()) { 19 // TODO: When sigprocmask and sigaction land: 20 // Unblock SIGABRT, raise it, if it was ignored or the handler returned, 21 // change its action to SIG_DFL, raise it again. 22 // TODO: When C11 mutexes land: 23 // Acquire recursive mutex (in case the current signal handler for SIGABRT 24 // itself calls abort we don't want to deadlock on the same thread trying 25 // to acquire it's own mutex.) 26 LIBC_NAMESPACE::raise(SIGABRT); 27 LIBC_NAMESPACE::raise(SIGKILL); 28 LIBC_NAMESPACE::_Exit(127); 29 } 30 31 } // namespace LIBC_NAMESPACE_DECL 32