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<title>Berkeley DB: DB_ENV->rep_stat</title>
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<h1>DB_ENV->rep_stat</h1>
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<h3><pre>
#include <db.h>
<p>
int
DB_ENV->rep_stat(DB_ENV *env, DB_REP_STAT **statp, u_int32_t flags);
</pre></h3>
<h1>Description</h1>
<p>The DB_ENV->rep_stat method returns the replication subsystem statistics.
<p>The <b>flags</b> value must be set to 0 or
the following value:
<p><dl compact>
<p><dt><a name="DB_STAT_CLEAR">DB_STAT_CLEAR</a><dd>Reset statistics after returning their values.
</dl>
<p>The DB_ENV->rep_stat method creates a statistical structure of type
DB_REP_STAT and copies a pointer to it into a user-specified memory
location.
<p>Statistical structures are created in allocated memory. If application-specific allocation
routines have been declared (see <a href="../api_c/env_set_alloc.html">DB_ENV->set_alloc</a> for more
information), they are used to allocate the memory; otherwise, the
library <b>malloc</b>(3) interface is used. The caller is
responsible for deallocating the memory. To deallocate the memory, free
the memory reference; references inside the returned memory need not be
individually freed.
<p>The following DB_REP_STAT fields will be filled in:
<p><dl compact>
<dt>u_int32_t st_stat;<dd>The current replication mode. Set to <a href="../api_c/rep_start.html#DB_REP_MASTER">DB_REP_MASTER</a> if the
environment is a replication master, <a href="../api_c/rep_start.html#DB_REP_CLIENT">DB_REP_CLIENT</a> if the
environment is a replication client, <a href="../api_c/rep_start.html#DB_REP_LOGSONLY">DB_REP_LOGSONLY</a> if the
environment is a log-files-only replica, or 0 if replication is not
configured.
<dt>DB_LSN st_next_lsn;<dd>In replication environments configured as masters, the next LSN expected.
In replication environments configured as clients, the next LSN to be used.
<dt>DB_LSN st_waiting_lsn;<dd>The LSN of the first missed log record being waited for, or 0 if no log
records are currently missing.
<dt>u_int32_t st_dupmasters;<dd>The number of duplicate master conditions detected.
<dt>u_int32_t st_env_id;<dd>The current environment ID.
<dt>u_int32_t st_env_priority;<dd>The current environment priority.
<dt>u_int32_t st_gen;<dd>The current generation number.
<dt>u_int32_t st_log_duplicated;<dd>The number of duplicate log records received.
<dt>u_int32_t st_log_queued;<dd>The number of log records currently queued.
<dt>u_int32_t st_log_queued_max;<dd>The maximum number of log records ever queued at once.
<dt>u_int32_t st_log_queued_total;<dd>The total number of log records queued.
<dt>u_int32_t st_log_records;<dd>The number of log records received and appended to the log.
<dt>u_int32_t st_log_requested;<dd>The number of log records missed and requested.
<dt>u_int32_t st_master;<dd>The current master environment ID.
<dt>u_int32_t st_master_changes;<dd>The number of times the master has changed.
<dt>u_int32_t st_msgs_badgen;<dd>The number of messages received with a bad generation number.
<dt>u_int32_t st_msgs_processed;<dd>The number of messages received and processed.
<dt>u_int32_t st_msgs_recover;<dd>The number of messages ignored due to pending recovery.
<dt>u_int32_t st_msgs_send_failures;<dd>The number of failed message sends.
<dt>u_int32_t st_msgs_sent;<dd>The number of messages sent.
<dt>u_int32_t st_newsites;<dd>The number of new site messages received.
<dt>u_int32_t st_outdated;<dd>The number of outdated conditions detected.
<dt>u_int32_t st_txns_applied;<dd>The number of transactions applied.
<dt>u_int32_t st_elections;<dd>The number of elections held.
<dt>u_int32_t st_elections_won;<dd>The number of elections won.
<dt>u_int32_t st_election_status;<dd>The current election phase (0 if no election is in progress).
<dt>u_int32_t st_election_cur_winner;<dd>The election winner.
<dt>u_int32_t st_election_gen;<dd>The election generation number.
<dt>DB_LSN st_election_lsn;<dd>The maximum LSN of election winner.
<dt>u_int32_t st_election_nsites;<dd>The number sites expected to participate in elections.
<dt>u_int32_t st_nthrottles;<dd>Transmission limited. This indicates the number of times that data
transmission was stopped to limit the amount of data sent in response
to a single call to <a href="../api_c/rep_message.html">DB_ENV->rep_process_message</a>.
<dt>u_int32_t st_election_priority;<dd>The election priority.
<dt>u_int32_t st_election_tiebreaker;<dd>The election tiebreaker value.
<dt>u_int32_t st_election_votes;<dd>The votes received this election round.
</dl>
<p>The DB_ENV->rep_stat method returns a non-zero error value on failure and 0 on success.
<h1>Errors</h1>
<p>The DB_ENV->rep_stat method may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions.
If a catastrophic error has occurred, the DB_ENV->rep_stat method may fail and
return <a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a>,
in which case all subsequent Berkeley DB calls will fail in the same way.
<h1>Class</h1>
<a href="../api_c/env_class.html">DB_ENV</a>
<h1>See Also</h1>
<a href="../api_c/rep_list.html">Replication and Related Methods</a>
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