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=head1 NAME

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

=head1 SYNOPSIS

 #include <openssl/lhash.h>

 void OPENSSL_LH_stats(LHASH *table, FILE *out);

 void OPENSSL_LH_node_stats(LHASH *table, FILE *out);

 void OPENSSL_LH_node_usage_stats(LHASH *table, FILE *out);

 void OPENSSL_LH_stats_bio(LHASH *table, BIO *out);

 void OPENSSL_LH_node_stats_bio(LHASH *table, BIO *out);

 void OPENSSL_LH_node_usage_stats_bio(LHASH *table, BIO *out);

=head1 DESCRIPTION

The B<LHASH> structure records statistics about most aspects of

accessing the hash table.

OPENSSL_LH_stats() prints out statistics on the size of the hash table, how

many entries are in it, and the number and result of calls to the

routines in this library.

OPENSSL_LH_node_stats() prints the number of entries for each 'bucket' in the

hash table.

OPENSSL_LH_node_usage_stats() prints out a short summary of the state of the

hash table.  It prints the 'load' and the 'actual load'.  The load is

the average number of data items per 'bucket' in the hash table.  The

'actual load' is the average number of items per 'bucket', but only

for buckets which contain entries.  So the 'actual load' is the

average number of searches that will need to find an item in the hash

table, while the 'load' is the average number that will be done to

record a miss.

OPENSSL_LH_stats_bio(), OPENSSL_LH_node_stats_bio() and OPENSSL_LH_node_usage_stats_bio()

are the same as the above, except that the output goes to a B<BIO>.

=head1 RETURN VALUES

These functions do not return values.

=head1 NOTE

These calls should be made under a read lock. Refer to

L<OPENSSL_LH_COMPFUNC(3)/NOTE> for more details about the locks required

when using the LHASH data structure.

=head1 SEE ALSO

L<bio(7)>, L<OPENSSL_LH_COMPFUNC(3)>

=head1 COPYRIGHT

Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the "License").  You may not use

this file except in compliance with the License.  You can obtain a copy

in the file LICENSE in the source distribution or at

L<https://www.openssl.org/source/license.html>.

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