libc/src/pthread/pthread_rwlock_destroy.cpp

   1 //===-- Implementation for Rwlock's destroy 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 "src/pthread/pthread_rwlock_destroy.h"
  10
  11 #include "src/__support/common.h"
  12 #include "src/__support/macros/config.h"
  13 #include "src/__support/threads/linux/rwlock.h"
  14
  15 #include <pthread.h>
  16
  17 namespace LIBC_NAMESPACE_DECL {
  18
  19 LLVM_LIBC_FUNCTION(int, pthread_rwlock_destroy, (pthread_rwlock_t * rwlock)) {
  20   if (!rwlock)
  21     return EINVAL;
  22   auto *rw = reinterpret_cast<RwLock *>(rwlock);
  23   RwLock::LockResult res = rw->check_for_destroy();
  24
  25   // this is currently no-op, but we still call the destructor as a symmetry
  26   // to its constructor call;
  27   if (res == RwLock::LockResult::Success)
  28     rw->~RwLock();
  29
  30   return static_cast<int>(res);
  31 }
  32
  33 } // namespace LIBC_NAMESPACE_DECL