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41 lines
1.2 KiB
41 lines
1.2 KiB
/* |
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* Copyright (C) 2012 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#include <search.h> |
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#include <stdlib.h> |
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struct node_t { |
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char* key; |
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struct node* llink; |
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struct node* rlink; |
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}; |
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// Destroy a tree and free all allocated resources. |
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// This is a GNU extension, not available from BSD. |
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void tdestroy(void* root, void (*destroy_func)(void*)) { |
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node_t* root_node = reinterpret_cast<node_t*>(root); |
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if (root_node == nullptr) { |
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return; |
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} |
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if (root_node->llink) { |
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tdestroy(root_node->llink, destroy_func); |
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} |
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if (root_node->rlink) { |
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tdestroy(root_node->rlink, destroy_func); |
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} |
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(*destroy_func)(root_node->key); |
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free(root); |
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}
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