libc/src/sys/wait/linux/waitpid.cpp

   1 //===-- Linux implementation of waitpid -----------------------------------===//
   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/wait4Impl.h"
  13 #include "src/sys/wait/waitpid.h"
  14
  15 namespace LIBC_NAMESPACE {
  16
  17 LLVM_LIBC_FUNCTION(pid_t, waitpid, (pid_t pid, int *wait_status, int options)) {
  18   auto result = internal::wait4impl(pid, wait_status, options, 0);
  19   if (!result.has_value()) {
  20     libc_errno = result.error();
  21     return -1;
  22   }
  23   return result.value();
  24 }
  25
  26 } // namespace LIBC_NAMESPACE