libc/src/pthread/pthread_mutex_unlock.cpp

   1 //===-- Linux implementation of the pthread_mutex_unlock 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_unlock.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_unlock, (pthread_mutex_t * mutex)) {
  21   reinterpret_cast<Mutex *>(mutex)->unlock();
  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