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 #include "src/__support/macros/config.h" 13 #include "src/errno/libc_errno.h" 14 15 #include <pthread.h> // pthread_rwlockattr_t 16 17 namespace LIBC_NAMESPACE_DECL { 18 19 LLVM_LIBC_FUNCTION(int, pthread_rwlockattr_setkind_np, 20 (pthread_rwlockattr_t * attr, int pref)) { 21 22 if (pref != PTHREAD_RWLOCK_PREFER_READER_NP && 23 pref != PTHREAD_RWLOCK_PREFER_WRITER_NP && 24 pref != PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP) 25 return EINVAL; 26 27 attr->pref = pref; 28 return 0; 29 } 30 31 } // namespace LIBC_NAMESPACE_DECL 32