/*
* __wt_conn_optrack_setup --
* Set up operation logging.
*/
int
__wt_conn_optrack_setup(WT_SESSION_IMPL *session,
const char *cfg[], bool reconfig)
{
WT_CONFIG_ITEM cval;
WT_CONNECTION_IMPL *conn;
WT_DECL_ITEM(buf);
WT_DECL_RET;
conn = S2C(session);
/* Once an operation tracking path has been set it can't be changed. */
if (!reconfig) {
WT_RET(__wt_config_gets(session,
cfg, "operation_tracking.path", &cval));
WT_RET(__wt_strndup(session,
cval.str, cval.len, &conn->optrack_path));
}
WT_RET(__wt_config_gets(session,
cfg, "operation_tracking.enabled", &cval));
if (cval.val == 0) {
if (F_ISSET(conn, WT_CONN_OPTRACK)) {
WT_RET(__wt_conn_optrack_teardown(session, reconfig));
F_CLR(conn, WT_CONN_OPTRACK);
}
return (0);
}
if (F_ISSET(conn, WT_CONN_READONLY))
/* Operation tracking isn't supported in read-only mode */
WT_RET_MSG(session, EINVAL,
"Operation tracking is incompatible with read only "
"configuration.");
if (F_ISSET(conn, WT_CONN_OPTRACK))
/* Already enabled, nothing else to do */
return (0);
/*
* Operation tracking files will include the ID of the creating process
* in their name, so we can distinguish between log files created by
* different WiredTiger processes in the same directory. We cache the
* process id for future use.
*/
conn->optrack_pid = __wt_process_id();
/*
* Open the file in the same directory that will hold a map of
* translations between function names and function IDs. If the file
* exists, remove it.
*/
WT_RET(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_filename_construct(session, conn->optrack_path,
"optrack-map", conn->optrack_pid, UINT32_MAX, buf));
WT_ERR(__wt_open(session,
(const char *)buf->data, WT_FS_OPEN_FILE_TYPE_REGULAR,
WT_FS_OPEN_CREATE, &conn->optrack_map_fh));
WT_ERR(__wt_spin_init(session,
&conn->optrack_map_spinlock, "optrack map spinlock"));
WT_ERR(__wt_malloc(session, WT_OPTRACK_BUFSIZE,
&conn->dummy_session.optrack_buf));
/* Set operation tracking on */
F_SET(conn, WT_CONN_OPTRACK);
err: __wt_scr_free(session, &buf);
return (ret);
}
/*
* __wt_connection_close --
* Close a connection handle.
*/
int
__wt_connection_close(WT_CONNECTION_IMPL *conn)
{
WT_CONNECTION *wt_conn;
WT_DECL_RET;
WT_DLH *dlh;
WT_SESSION_IMPL *s, *session;
u_int i;
wt_conn = &conn->iface;
session = conn->default_session;
/* Shut down the subsystems, ensuring workers see the state change. */
F_SET(conn, WT_CONN_CLOSING);
WT_FULL_BARRIER();
/*
* Clear any pending async operations and shut down the async worker
* threads and system before closing LSM.
*/
WT_TRET(__wt_async_flush(session));
WT_TRET(__wt_async_destroy(session));
/*
* Shut down server threads other than the eviction server, which is
* needed later to close btree handles. Some of these threads access
* btree handles, so take care in ordering shutdown to make sure they
* exit before files are closed.
*/
WT_TRET(__wt_lsm_manager_destroy(session));
/*
* Once the async and LSM threads exit, we shouldn't be opening any
* more files.
*/
F_SET(conn, WT_CONN_CLOSING_NO_MORE_OPENS);
WT_FULL_BARRIER();
WT_TRET(__wt_checkpoint_server_destroy(session));
WT_TRET(__wt_statlog_destroy(session, true));
WT_TRET(__wt_sweep_destroy(session));
/* The eviction server is shut down last. */
WT_TRET(__wt_evict_destroy(session));
/* Close open data handles. */
WT_TRET(__wt_conn_dhandle_discard(session));
/* Shut down metadata tracking. */
WT_TRET(__wt_meta_track_destroy(session));
/*
* Now that all data handles are closed, tell logging that a checkpoint
* has completed then shut down the log manager (only after closing
* data handles). The call to destroy the log manager is outside the
* conditional because we allocate the log path so that printlog can
* run without running logging or recovery.
*/
if (ret == 0 && FLD_ISSET(conn->log_flags, WT_CONN_LOG_ENABLED) &&
FLD_ISSET(conn->log_flags, WT_CONN_LOG_RECOVER_DONE))
WT_TRET(__wt_txn_checkpoint_log(
session, true, WT_TXN_LOG_CKPT_STOP, NULL));
WT_TRET(__wt_logmgr_destroy(session));
/* Free memory for collators, compressors, data sources. */
WT_TRET(__wt_conn_remove_collator(session));
WT_TRET(__wt_conn_remove_compressor(session));
WT_TRET(__wt_conn_remove_data_source(session));
WT_TRET(__wt_conn_remove_encryptor(session));
WT_TRET(__wt_conn_remove_extractor(session));
/* Disconnect from shared cache - must be before cache destroy. */
WT_TRET(__wt_conn_cache_pool_destroy(session));
/* Discard the cache. */
WT_TRET(__wt_cache_destroy(session));
/* Discard transaction state. */
__wt_txn_global_destroy(session);
/* Close the lock file, opening up the database to other connections. */
if (conn->lock_fh != NULL)
WT_TRET(__wt_close(session, &conn->lock_fh));
/* Close any optrack files */
if (session->optrack_fh != NULL)
WT_TRET(__wt_close(session, &session->optrack_fh));
/* Close operation tracking */
WT_TRET(__wt_conn_optrack_teardown(session, false));
/* Close any file handles left open. */
WT_TRET(__wt_close_connection_close(session));
/*
* Close the internal (default) session, and switch back to the dummy
* session in case of any error messages from the remaining operations
* while destroying the connection handle.
*/
if (session != &conn->dummy_session) {
WT_TRET(session->iface.close(&session->iface, NULL));
session = conn->default_session = &conn->dummy_session;
}
/*
* The session split stash, hazard information and handle arrays aren't
* discarded during normal session close, they persist past the life of
* the session. Discard them now.
*/
if (!F_ISSET(conn, WT_CONN_LEAK_MEMORY))
if ((s = conn->sessions) != NULL)
for (i = 0; i < conn->session_size; ++s, ++i) {
__wt_free(session, s->cursor_cache);
__wt_free(session, s->dhhash);
__wt_stash_discard_all(session, s);
__wt_free(session, s->hazard);
}
/* Destroy the file-system configuration. */
if (conn->file_system != NULL && conn->file_system->terminate != NULL)
WT_TRET(conn->file_system->terminate(
conn->file_system, (WT_SESSION *)session));
/* Close extensions, first calling any unload entry point. */
while ((dlh = TAILQ_FIRST(&conn->dlhqh)) != NULL) {
TAILQ_REMOVE(&conn->dlhqh, dlh, q);
if (dlh->terminate != NULL)
WT_TRET(dlh->terminate(wt_conn));
WT_TRET(__wt_dlclose(session, dlh));
}
/* Destroy the handle. */
__wt_connection_destroy(conn);
return (ret);
}
