1=pod 2 3=head1 NAME 4 5OPENSSL_LH_stats, OPENSSL_LH_node_stats, OPENSSL_LH_node_usage_stats, 6OPENSSL_LH_stats_bio, 7OPENSSL_LH_node_stats_bio, OPENSSL_LH_node_usage_stats_bio - LHASH statistics 8 9=head1 SYNOPSIS 10 11 #include <openssl/lhash.h> 12 13The following functions have been deprecated since OpenSSL 3.1, and can be 14hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value, 15see L<openssl_user_macros(7)>: 16 17 void OPENSSL_LH_node_stats(LHASH *table, FILE *out); 18 void OPENSSL_LH_node_usage_stats(LHASH *table, FILE *out); 19 20 void OPENSSL_LH_node_stats_bio(LHASH *table, BIO *out); 21 void OPENSSL_LH_node_usage_stats_bio(LHASH *table, BIO *out); 22 23 void OPENSSL_LH_stats(LHASH *table, FILE *out); 24 void OPENSSL_LH_stats_bio(LHASH *table, BIO *out); 25 26=head1 DESCRIPTION 27 28The B<LHASH> structure records statistics about most aspects of 29accessing the hash table. 30 31OPENSSL_LH_stats() prints out statistics on the size of the hash table and how 32many entries are in it. For historical reasons, this function also outputs a 33number of additional statistics, but the tracking of these statistics is no 34longer supported and these statistics are always reported as zero. 35 36OPENSSL_LH_node_stats() prints the number of entries for each 'bucket' in the 37hash table. 38 39OPENSSL_LH_node_usage_stats() prints out a short summary of the state of the 40hash table. It prints the 'load' and the 'actual load'. The load is 41the average number of data items per 'bucket' in the hash table. The 42'actual load' is the average number of items per 'bucket', but only 43for buckets which contain entries. So the 'actual load' is the 44average number of searches that will need to find an item in the hash 45table, while the 'load' is the average number that will be done to 46record a miss. 47 48OPENSSL_LH_stats_bio(), OPENSSL_LH_node_stats_bio() and OPENSSL_LH_node_usage_stats_bio() 49are the same as the above, except that the output goes to a B<BIO>. 50 51These functions are deprecated and should no longer be used. 52 53=head1 RETURN VALUES 54 55These functions do not return values. 56 57=head1 NOTE 58 59These calls should be made under a read lock. Refer to 60L<OPENSSL_LH_COMPFUNC(3)/NOTE> for more details about the locks required 61when using the LHASH data structure. 62 63=head1 SEE ALSO 64 65L<bio(7)>, L<OPENSSL_LH_COMPFUNC(3)> 66 67=head1 HISTORY 68 69These functions were deprecated in version 3.1. 70 71=head1 COPYRIGHT 72 73Copyright 2000-2022 The OpenSSL Project Authors. All Rights Reserved. 74 75Licensed under the Apache License 2.0 (the "License"). You may not use 76this file except in compliance with the License. You can obtain a copy 77in the file LICENSE in the source distribution or at 78L<https://www.openssl.org/source/license.html>. 79 80=cut 81
