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be606c013d
Various initialization functions modify this table, which can cause heap corruption in the absence of external synchronization. Some stats are modified from OPENSSL_LH_retrieve, where callers aren't expecting to have to take out an exclusive lock. Switch to using atomic operations for those stats. Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/3525)
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/crypto.h>
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struct lhash_node_st {
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void *data;
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struct lhash_node_st *next;
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unsigned long hash;
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};
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struct lhash_st {
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OPENSSL_LH_NODE **b;
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OPENSSL_LH_COMPFUNC comp;
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OPENSSL_LH_HASHFUNC hash;
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/*
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* some stats are updated on lookup, which callers aren't expecting to have
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* to take an exclusive lock around. This lock protects them on platforms
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* without atomics, and their types are int rather than unsigned long below
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* so they can be adjusted with CRYPTO_atomic_add.
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*/
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CRYPTO_RWLOCK *retrieve_stats_lock;
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unsigned int num_nodes;
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unsigned int num_alloc_nodes;
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unsigned int p;
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unsigned int pmax;
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unsigned long up_load; /* load times 256 */
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unsigned long down_load; /* load times 256 */
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unsigned long num_items;
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unsigned long num_expands;
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unsigned long num_expand_reallocs;
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unsigned long num_contracts;
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unsigned long num_contract_reallocs;
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int num_hash_calls;
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int num_comp_calls;
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unsigned long num_insert;
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unsigned long num_replace;
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unsigned long num_delete;
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unsigned long num_no_delete;
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int num_retrieve;
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int num_retrieve_miss;
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int num_hash_comps;
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int error;
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};
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