1 //===-- Linux implementation of the pthread_mutex_lock function -----------===// 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_mutex_lock.h" 10 11 #include "src/__support/common.h" 12 #include "src/__support/macros/config.h" 13 #include "src/__support/threads/mutex.h" 14 15 #include <pthread.h> 16 17 namespace LIBC_NAMESPACE_DECL { 18 19 // The implementation currently handles only plain mutexes. 20 LLVM_LIBC_FUNCTION(int, pthread_mutex_lock, (pthread_mutex_t * mutex)) { 21 reinterpret_cast<Mutex *>(mutex)->lock(); 22 // TODO: When the Mutex class supports all the possible error conditions 23 // return the appropriate error value here. 24 return 0; 25 } 26 27 } // namespace LIBC_NAMESPACE_DECL 28