libc/src/search/hdestroy_r.cpp

   1 //===-- Implementation of hdestroy_r ----------------------------*- C++ -*-===//
   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/search/hdestroy_r.h"
  10 #include "src/__support/HashTable/table.h"
  11 #include "src/__support/macros/config.h"
  12 #include "src/errno/libc_errno.h"
  13
  14 namespace LIBC_NAMESPACE_DECL {
  15 LLVM_LIBC_FUNCTION(void, hdestroy_r, (struct hsearch_data * htab)) {
  16   if (htab == nullptr) {
  17     libc_errno = EINVAL;
  18     return;
  19   }
  20   internal::HashTable *table =
  21       static_cast<internal::HashTable *>(htab->__opaque);
  22   internal::HashTable::deallocate(table);
  23   htab->__opaque = nullptr;
  24 }
  25
  26 } // namespace LIBC_NAMESPACE_DECL