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.\"
.IX Title "Memcached::libmemcached::memcached_stats 3pm"
.TH Memcached::libmemcached::memcached_stats 3pm "2020-11-09" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
memcached_stat, memcached_stat_servername, memcached_stat_get_value, memcached_stat_get_keys \- Get memcached statistics
.SH "LIBRARY"
.IX Header "LIBRARY"
C Client Library for memcached (libmemcached, \-lmemcached)
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  #include <memcached.h>
\&
\&  memcached_stat_st *memcached_stat (memcached_st *ptr,
\&                                     char *args,
\&                                     memcached_return_t *error);
\&
\&  memcached_return_t memcached_stat_servername (memcached_stat_st *stat,
\&                                                char *args, 
\&                                                const char *hostname,
\&                                                unsigned int port);
\&
\&  char *
\&    memcached_stat_get_value (memcached_st *ptr,
\&                              memcached_stat_st *stat, 
\&                              const char *key,
\&                              memcached_return_t *error);
\&
\&  char ** 
\&    memcached_stat_get_keys (memcached_st *ptr,
\&                             memcached_stat_st *stat, 
\&                             memcached_return_t *error);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBlibmemcached\fR\|(3) has the ability to query a memcached server (or collection
of servers) for their current state. Queries to find state return a
\&\f(CW\*(C`memcached_stat_st\*(C'\fR structure. You are responsible for freeing this structure.
While it is possible to access the structure directly it is not advisable.
<\fBmemcached_stat_get_value()\fR has been provided to query the structure.
.PP
\&\fBmemcached_stat()\fR fetches an array of \f(CW\*(C`memcached_stat_st\*(C'\fR structures containing
the state of all available memcached servers. The return value must be freed
by the calling application. If called with the \f(CW\*(C`MEMCACHED_BEHAVIOR_USE_UDP\*(C'\fR
behavior set, a \s-1NULL\s0 value is returned and the error parameter is set to 
\&\f(CW\*(C`MEMCACHED_NOT_SUPPORTED\*(C'\fR.
.PP
\&\fBmemcached_stat_servername()\fR can be used standalone without a \f(CW\*(C`memcached_st\*(C'\fR to
obtain the state of a particular server.  \*(L"args\*(R" is used to define a
particular state object (a list of these are not provided for by either
the \fBmemcached_stat_get_keys()\fR call nor are they defined in the memcached
protocol). You must specify the hostname and port of the server you want to
obtain information on.
.PP
\&\fBmemcached_stat_get_value()\fR returns the value of a particular state key. You
specify the key you wish to obtain.  The key must be null terminated.
.PP
\&\fBmemcached_stat_get_keys()\fR returns a list of keys that the server has state
objects on. You are responsible for freeing this list.
.PP
A command line tool, \fBmemstat\fR\|(1), is provided so that you do not have to write
an application to do this.
.SH "RETURN"
.IX Header "RETURN"
Varies, see particular functions.
.PP
Any method returning a \f(CW\*(C`memcached_stat_st\*(C'\fR expects you to free the
memory allocated for it.
.SH "HOME"
.IX Header "HOME"
To find out more information please check:
<https://launchpad.net/libmemcached>
.SH "AUTHOR"
.IX Header "AUTHOR"
Brian Aker, <brian@tangent.org>
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBmemcached\fR\|(1) \fBlibmemcached\fR\|(3) \fBmemcached_strerror\fR\|(3)