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131 .IX Title "OPENSSL_LH_STATS 3"
132 .TH OPENSSL_LH_STATS 3 "2018-09-11" "1.1.1" "OpenSSL"
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138 OPENSSL_LH_stats, OPENSSL_LH_node_stats, OPENSSL_LH_node_usage_stats, OPENSSL_LH_stats_bio, OPENSSL_LH_node_stats_bio, OPENSSL_LH_node_usage_stats_bio \- LHASH statistics
140 .IX Header "SYNOPSIS"
142 \& #include <openssl/lhash.h>
144 \& void OPENSSL_LH_stats(LHASH *table, FILE *out);
145 \& void OPENSSL_LH_node_stats(LHASH *table, FILE *out);
146 \& void OPENSSL_LH_node_usage_stats(LHASH *table, FILE *out);
148 \& void OPENSSL_LH_stats_bio(LHASH *table, BIO *out);
149 \& void OPENSSL_LH_node_stats_bio(LHASH *table, BIO *out);
150 \& void OPENSSL_LH_node_usage_stats_bio(LHASH *table, BIO *out);
153 .IX Header "DESCRIPTION"
154 The \fB\s-1LHASH\s0\fR structure records statistics about most aspects of
155 accessing the hash table.
157 \&\fIOPENSSL_LH_stats()\fR prints out statistics on the size of the hash table, how
158 many entries are in it, and the number and result of calls to the
159 routines in this library.
161 \&\fIOPENSSL_LH_node_stats()\fR prints the number of entries for each 'bucket' in the
164 \&\fIOPENSSL_LH_node_usage_stats()\fR prints out a short summary of the state of the
165 hash table. It prints the 'load' and the 'actual load'. The load is
166 the average number of data items per 'bucket' in the hash table. The
167 \&'actual load' is the average number of items per 'bucket', but only
168 for buckets which contain entries. So the 'actual load' is the
169 average number of searches that will need to find an item in the hash
170 table, while the 'load' is the average number that will be done to
173 \&\fIOPENSSL_LH_stats_bio()\fR, \fIOPENSSL_LH_node_stats_bio()\fR and \fIOPENSSL_LH_node_usage_stats_bio()\fR
174 are the same as the above, except that the output goes to a \fB\s-1BIO\s0\fR.
176 .IX Header "RETURN VALUES"
177 These functions do not return values.
180 These calls should be made under a read lock. Refer to
181 \&\*(L"\s-1NOTE\*(R"\s0 in \s-1\fIOPENSSL_LH_COMPFUNC\s0\fR\|(3) for more details about the locks required
182 when using the \s-1LHASH\s0 data structure.
184 .IX Header "SEE ALSO"
185 \&\fIbio\fR\|(7), \s-1\fIOPENSSL_LH_COMPFUNC\s0\fR\|(3)
187 .IX Header "COPYRIGHT"
188 Copyright 2000\-2017 The OpenSSL Project Authors. All Rights Reserved.
190 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
191 this file except in compliance with the License. You can obtain a copy
192 in the file \s-1LICENSE\s0 in the source distribution or at
193 <https://www.openssl.org/source/license.html>.