| 1 | //===-- Implementation of hsearch_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/hsearch_r.h" |
| 10 | #include "src/__support/HashTable/table.h" |
| 11 | #include "src/errno/libc_errno.h" |
| 12 | |
| 13 | namespace LIBC_NAMESPACE { |
| 14 | LLVM_LIBC_FUNCTION(int, hsearch_r, |
| 15 | (ENTRY item, ACTION action, ENTRY **retval, |
| 16 | struct hsearch_data *htab)) { |
| 17 | if (htab == nullptr) { |
| 18 | libc_errno = EINVAL; |
| 19 | return 0; |
| 20 | } |
| 21 | internal::HashTable *table = |
| 22 | static_cast<internal::HashTable *>(htab->__opaque); |
| 23 | switch (action) { |
| 24 | case FIND: |
| 25 | *retval = table->find(key: item.key); |
| 26 | if (*retval == nullptr) { |
| 27 | libc_errno = ESRCH; |
| 28 | return 0; |
| 29 | } |
| 30 | break; |
| 31 | case ENTER: |
| 32 | *retval = internal::HashTable::insert(table, item); |
| 33 | htab->__opaque = table; |
| 34 | if (*retval == nullptr) { |
| 35 | libc_errno = ENOMEM; |
| 36 | return 0; |
| 37 | } |
| 38 | break; |
| 39 | } |
| 40 | return 1; |
| 41 | } |
| 42 | |
| 43 | } // namespace LIBC_NAMESPACE |
| 44 |