1 //===-- Linux implementation of wait4 -------------------------------------===// 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/libc_assert.h" 11 12 #include "src/sys/wait/wait4.h" 13 #include "src/sys/wait/wait4Impl.h" 14 15 namespace LIBC_NAMESPACE { 16 17 LLVM_LIBC_FUNCTION(pid_t, wait4, 18 (pid_t pid, int *wait_status, int options, 19 struct rusage *usage)) { 20 auto result = internal::wait4impl(pid, wait_status, options, usage); 21 if (!result.has_value()) { 22 libc_errno = result.error(); 23 return -1; 24 } 25 return result.value(); 26 } 27 28 } // namespace LIBC_NAMESPACE 29