5702c6ff45
I'm unable to find a bug, but we've had requests for this internally once or twice (though I pointed those folks at the STL), and there's code we build for the host or in our bootloaders that would use this, and there's reasonable-looking FreeBSD implementation ready and waiting. Bug: N/A Test: ran tests Change-Id: I6ddee4b71bea4c22ed015debd31d3eaac4fcdd35
41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
/*
|
|
* Copyright (C) 2012 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <search.h>
|
|
#include <stdlib.h>
|
|
|
|
struct node_t {
|
|
char* key;
|
|
struct node* llink;
|
|
struct node* rlink;
|
|
};
|
|
|
|
// Destroy a tree and free all allocated resources.
|
|
// This is a GNU extension, not available from BSD.
|
|
void tdestroy(void* root, void (*destroy_func)(void*)) {
|
|
node_t* root_node = reinterpret_cast<node_t*>(root);
|
|
if (root_node == NULL) {
|
|
return;
|
|
}
|
|
if (root_node->llink) {
|
|
tdestroy(root_node->llink, destroy_func);
|
|
}
|
|
if (root_node->rlink) {
|
|
tdestroy(root_node->rlink, destroy_func);
|
|
}
|
|
(*destroy_func)(root_node->key);
|
|
free(root);
|
|
}
|