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OPENSSL_LH_STATS(3ossl) OpenSSL OPENSSL_LH_STATS(3ossl)
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
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);
DESCRIPTION
The 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
and how many entries are in it. For historical reasons, this function
also outputs a number of additional statistics, but the tracking of
these statistics is no longer supported and these statistics are always
reported as zero.
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 BIO.
RETURN VALUES
These functions do not return values.
NOTE
These calls should be made under a read lock. Refer to "NOTE" in
OPENSSL_LH_COMPFUNC(3) for more details about the locks required when
using the LHASH data structure.
SEE ALSO
bio(7), OPENSSL_LH_COMPFUNC(3)
COPYRIGHT
Copyright 2000-2022 The OpenSSL Project Authors. All Rights Reserved.