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       1                 :            : /* Definitions for thread-safe tsearch/tfind
       2                 :            :    Copyright (C) 2023 Rice University
       3                 :            :    This file is part of elfutils.
       4                 :            : 
       5                 :            :    This file is free software; you can redistribute it and/or modify
       6                 :            :    it under the terms of either
       7                 :            : 
       8                 :            :      * the GNU Lesser General Public License as published by the Free
       9                 :            :        Software Foundation; either version 3 of the License, or (at
      10                 :            :        your option) any later version
      11                 :            : 
      12                 :            :    or
      13                 :            : 
      14                 :            :      * the GNU General Public License as published by the Free
      15                 :            :        Software Foundation; either version 2 of the License, or (at
      16                 :            :        your option) any later version
      17                 :            : 
      18                 :            :    or both in parallel, as here.
      19                 :            : 
      20                 :            :    elfutils is distributed in the hope that it will be useful, but
      21                 :            :    WITHOUT ANY WARRANTY; without even the implied warranty of
      22                 :            :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      23                 :            :    General Public License for more details.
      24                 :            : 
      25                 :            :    You should have received copies of the GNU General Public License and
      26                 :            :    the GNU Lesser General Public License along with this program.  If
      27                 :            :    not, see <http://www.gnu.org/licenses/>.  */
      28                 :            : 
      29                 :            : #ifdef HAVE_CONFIG_H
      30                 :            : #include <config.h>
      31                 :            : #endif
      32                 :            : 
      33                 :            : #include "eu-search.h"
      34                 :            : 
      35                 :    1383702 : void *eu_tsearch (const void *key, search_tree *tree,
      36                 :            :                   int (*compare)(const void *, const void *))
      37                 :            : {
      38                 :    1383702 :   rwlock_wrlock (tree->lock);
      39                 :    1383702 :   void *ret = tsearch (key, &tree->root, compare);
      40                 :    1383702 :   rwlock_unlock (tree->lock);
      41                 :            : 
      42                 :    1383702 :   return ret;
      43                 :            : }
      44                 :            : 
      45                 :    3230396 : void *eu_tfind (const void *key, search_tree *tree,
      46                 :            :                 int (*compare)(const void *, const void *))
      47                 :            : {
      48                 :    3230396 :   rwlock_rdlock (tree->lock);
      49                 :    3230396 :   void *ret = tfind (key, &tree->root, compare);
      50                 :    3230396 :   rwlock_unlock (tree->lock);
      51                 :            : 
      52                 :    3230396 :   return ret;
      53                 :            : }
      54                 :            : 
      55                 :          0 : void *eu_tdelete (const void *key, search_tree *tree,
      56                 :            :                   int (*compare)(const void *, const void *))
      57                 :            : {
      58                 :          0 :   rwlock_wrlock (tree->lock);
      59                 :          0 :   void *ret = tdelete (key, &tree->root, compare);
      60                 :          0 :   rwlock_unlock (tree->lock);
      61                 :            : 
      62                 :          0 :   return ret;
      63                 :            : }
      64                 :            : 
      65                 :     268146 : void eu_tdestroy (search_tree *tree, void (*free_node)(void *))
      66                 :            : {
      67                 :     268146 :   rwlock_wrlock (tree->lock);
      68                 :            : 
      69                 :     268146 :   tdestroy (tree->root, free_node);
      70                 :     268146 :   tree->root = NULL;
      71                 :            : 
      72                 :     268146 :   rwlock_unlock (tree->lock);
      73                 :     268146 : }
      74                 :            : 
      75                 :     206198 : void eu_search_tree_init (search_tree *tree)
      76                 :            : {
      77                 :     206198 :   tree->root = NULL;
      78                 :     206198 :   rwlock_init (tree->lock);
      79                 :     206198 : }
      80                 :            : 
      81                 :     268146 : void eu_search_tree_fini (search_tree *tree, void (*free_node)(void *))
      82                 :            : {
      83                 :     268146 :   eu_tdestroy (tree, free_node);
      84                 :     268146 :   rwlock_fini (tree->lock);
      85                 :     268146 : }