1 //===-- Implementation of the pthread_rwlockattr_setkind_np ---------------===// 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 "pthread_rwlockattr_setkind_np.h" 10 11 #include "src/__support/common.h" 12 13 #include <errno.h> 14 #include <pthread.h> // pthread_rwlockattr_t 15 16 namespace LIBC_NAMESPACE { 17 18 LLVM_LIBC_FUNCTION(int, pthread_rwlockattr_setkind_np, 19 (pthread_rwlockattr_t * attr, int pref)) { 20 21 if (pref != PTHREAD_RWLOCK_PREFER_READER_NP && 22 pref != PTHREAD_RWLOCK_PREFER_WRITER_NP && 23 pref != PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP) 24 return EINVAL; 25 26 attr->pref = pref; 27 return 0; 28 } 29 30 } // namespace LIBC_NAMESPACE 31