/*
* __conn_add_data_source --
* WT_CONNECTION->add_data_source method.
*/
static int
__conn_add_data_source(WT_CONNECTION *wt_conn,
const char *prefix, WT_DATA_SOURCE *dsrc, const char *config)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_SESSION_IMPL *session;
WT_NAMED_DATA_SOURCE *ndsrc;
ndsrc = NULL;
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, add_data_source, config, cfg);
WT_UNUSED(cfg);
WT_ERR(__wt_calloc_def(session, 1, &ndsrc));
WT_ERR(__wt_strdup(session, prefix, &ndsrc->prefix));
ndsrc->dsrc = dsrc;
/* Link onto the environment's list of data sources. */
__wt_spin_lock(session, &conn->api_lock);
TAILQ_INSERT_TAIL(&conn->dsrcqh, ndsrc, q);
__wt_spin_unlock(session, &conn->api_lock);
if (0) {
err: if (ndsrc != NULL)
__wt_free(session, ndsrc->prefix);
__wt_free(session, ndsrc);
}
API_END_NOTFOUND_MAP(session, ret);
}
/*
* __conn_add_collator --
* WT_CONNECTION->add_collator method.
*/
static int
__conn_add_collator(WT_CONNECTION *wt_conn,
const char *name, WT_COLLATOR *collator, const char *config)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_NAMED_COLLATOR *ncoll;
WT_SESSION_IMPL *session;
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, add_collator, config, cfg);
WT_UNUSED(cfg);
WT_ERR(__wt_calloc_def(session, 1, &ncoll));
WT_ERR(__wt_strdup(session, name, &ncoll->name));
ncoll->collator = collator;
__wt_spin_lock(session, &conn->api_lock);
TAILQ_INSERT_TAIL(&conn->collqh, ncoll, q);
__wt_spin_unlock(session, &conn->api_lock);
ncoll = NULL;
err: __wt_free(session, ncoll);
API_END_NOTFOUND_MAP(session, ret);
}
/*
* __conn_add_compressor --
* WT_CONNECTION->add_compressor method.
*/
static int
__conn_add_compressor(WT_CONNECTION *wt_conn,
const char *name, WT_COMPRESSOR *compressor, const char *config)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_NAMED_COMPRESSOR *ncomp;
WT_SESSION_IMPL *session;
WT_UNUSED(name);
WT_UNUSED(compressor);
ncomp = NULL;
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, add_compressor, config, cfg);
WT_UNUSED(cfg);
WT_ERR(__wt_calloc_def(session, 1, &ncomp));
WT_ERR(__wt_strdup(session, name, &ncomp->name));
ncomp->compressor = compressor;
__wt_spin_lock(session, &conn->api_lock);
TAILQ_INSERT_TAIL(&conn->compqh, ncomp, q);
ncomp = NULL;
__wt_spin_unlock(session, &conn->api_lock);
err: if (ncomp != NULL) {
__wt_free(session, ncomp->name);
__wt_free(session, ncomp);
}
API_END_NOTFOUND_MAP(session, ret);
}
/*
* __conn_load_extension --
* WT_CONNECTION->load_extension method.
*/
static int
__conn_load_extension(
WT_CONNECTION *wt_conn, const char *path, const char *config)
{
WT_CONFIG_ITEM cval;
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_DLH *dlh;
WT_SESSION_IMPL *session;
int (*load)(WT_CONNECTION *, WT_CONFIG_ARG *);
const char *init_name, *terminate_name;
dlh = NULL;
init_name = terminate_name = NULL;
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, load_extension, config, cfg);
WT_ERR(__wt_config_gets(session, cfg, "entry", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len, &init_name));
/*
* This assumes the underlying shared libraries are reference counted,
* that is, that re-opening a shared library simply increments a ref
* count, and closing it simply decrements the ref count, and the last
* close discards the reference entirely -- in other words, we do not
* check to see if we've already opened this shared library.
*
* Fill in the extension structure and call the load function.
*/
WT_ERR(__wt_dlopen(session, path, &dlh));
WT_ERR(__wt_dlsym(session, dlh, init_name, 1, &load));
WT_ERR(load(wt_conn, (WT_CONFIG_ARG *)cfg));
/* Remember the unload function for when we close. */
WT_ERR(__wt_config_gets(session, cfg, "terminate", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len, &terminate_name));
WT_ERR(__wt_dlsym(session, dlh, terminate_name, 0, &dlh->terminate));
/* Link onto the environment's list of open libraries. */
__wt_spin_lock(session, &conn->api_lock);
TAILQ_INSERT_TAIL(&conn->dlhqh, dlh, q);
__wt_spin_unlock(session, &conn->api_lock);
dlh = NULL;
err: if (dlh != NULL)
WT_TRET(__wt_dlclose(session, dlh));
__wt_free(session, init_name);
__wt_free(session, terminate_name);
API_END_NOTFOUND_MAP(session, ret);
}
/*
* __conn_load_extension --
* WT_CONNECTION->load_extension method.
*/
static int
__conn_load_extension(
WT_CONNECTION *wt_conn, const char *path, const char *config)
{
WT_CONFIG_ITEM cval;
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_DLH *dlh;
WT_SESSION_IMPL *session;
int (*entry)(WT_SESSION *, WT_EXTENSION_API *, const char *);
const char *entry_name;
dlh = NULL;
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, load_extension, config, cfg);
entry_name = NULL;
WT_ERR(__wt_config_gets(session, cfg, "entry", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len, &entry_name));
/*
* This assumes the underlying shared libraries are reference counted,
* that is, that re-opening a shared library simply increments a ref
* count, and closing it simply decrements the ref count, and the last
* close discards the reference entirely -- in other words, we do not
* check to see if we've already opened this shared library.
*/
WT_ERR(__wt_dlopen(session, path, &dlh));
WT_ERR(__wt_dlsym(session, dlh, entry_name, &entry));
/* Call the entry function. */
WT_ERR(entry(&session->iface, &__api, config));
/* Link onto the environment's list of open libraries. */
__wt_spin_lock(session, &conn->api_lock);
TAILQ_INSERT_TAIL(&conn->dlhqh, dlh, q);
__wt_spin_unlock(session, &conn->api_lock);
if (0) {
err: if (dlh != NULL)
WT_TRET(__wt_dlclose(session, dlh));
}
__wt_free(session, entry_name);
API_END_NOTFOUND_MAP(session, ret);
}
/*
* __conn_add_extractor --
* WT_CONNECTION->add_extractor method.
*/
static int
__conn_add_extractor(WT_CONNECTION *wt_conn,
const char *name, WT_EXTRACTOR *extractor, const char *config)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_SESSION_IMPL *session;
WT_UNUSED(name);
WT_UNUSED(extractor);
ret = ENOTSUP;
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, add_extractor, config, cfg);
WT_UNUSED(cfg);
err: API_END_NOTFOUND_MAP(session, ret);
}
/*
* __conn_reconfigure --
* WT_CONNECTION->reconfigure method.
*/
static int
__conn_reconfigure(WT_CONNECTION *wt_conn, const char *config)
{
WT_CONFIG_ITEM cval;
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_SESSION_IMPL *session;
/*
* Special version of cfg that doesn't include the default config: used
* to limit changes to values that the application sets explicitly.
* Note that any function using this value has to be prepared to handle
* not-found as a valid option return.
*/
const char *raw_cfg[] = { config, NULL };
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, reconfigure, config, cfg);
/* Turning on statistics clears any existing values. */
if ((ret =
__wt_config_gets(session, raw_cfg, "statistics", &cval)) == 0) {
conn->statistics = cval.val == 0 ? 0 : 1;
if (conn->statistics)
__wt_stat_clear_connection_stats(&conn->stats);
}
WT_ERR_NOTFOUND_OK(ret);
WT_ERR(__wt_conn_cache_pool_config(session, cfg));
WT_ERR(__wt_cache_config(conn, raw_cfg));
WT_ERR(__conn_verbose_config(session, raw_cfg));
/* Wake up the cache pool server so any changes are noticed. */
if (F_ISSET(conn, WT_CONN_CACHE_POOL))
WT_ERR(__wt_cond_signal(
session, __wt_process.cache_pool->cache_pool_cond));
err: API_END(session);
return (ret);
}
/*
* __conn_open_session --
* WT_CONNECTION->open_session method.
*/
static int
__conn_open_session(WT_CONNECTION *wt_conn,
WT_EVENT_HANDLER *event_handler, const char *config,
WT_SESSION **wt_sessionp)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_SESSION_IMPL *session, *session_ret;
conn = (WT_CONNECTION_IMPL *)wt_conn;
session_ret = NULL;
CONNECTION_API_CALL(conn, session, open_session, config, cfg);
WT_UNUSED(cfg);
WT_ERR(__wt_open_session(conn, 0, event_handler, config, &session_ret));
*wt_sessionp = &session_ret->iface;
err: API_END_NOTFOUND_MAP(session, ret);
}
/*
* __conn_close --
* WT_CONNECTION->close method.
*/
static int
__conn_close(WT_CONNECTION *wt_conn, const char *config)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_NAMED_COLLATOR *ncoll;
WT_NAMED_COMPRESSOR *ncomp;
WT_NAMED_DATA_SOURCE *ndsrc;
WT_SESSION *wt_session;
WT_SESSION_IMPL *s, *session;
uint32_t i;
conn = (WT_CONNECTION_IMPL *)wt_conn;
CONNECTION_API_CALL(conn, session, close, config, cfg);
WT_UNUSED(cfg);
/*
* Close open, external sessions.
* Additionally, the session's hazard pointer memory isn't discarded
* during normal session close because access to it isn't serialized.
* Discard it now. Note the loop for the hazard pointer memory, it's
* the entire session array, not only the active session count, as the
* active session count may be less than the maximum session count.
*/
for (s = conn->sessions, i = 0; i < conn->session_cnt; ++s, ++i)
if (s->active && !F_ISSET(s, WT_SESSION_INTERNAL)) {
wt_session = &s->iface;
WT_TRET(wt_session->close(wt_session, config));
}
for (s = conn->sessions, i = 0; i < conn->session_size; ++s, ++i)
if (!F_ISSET(s, WT_SESSION_INTERNAL))
__wt_free(session, s->hazard);
/*
* 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.
*/
F_CLR(conn, WT_CONN_SERVER_RUN);
WT_TRET(__wt_checkpoint_destroy(conn));
WT_TRET(__wt_statlog_destroy(conn));
/* Clean up open LSM handles. */
WT_ERR(__wt_lsm_cleanup(&conn->iface));
/* Close open btree handles. */
WT_TRET(__wt_conn_btree_discard(conn));
/* Free memory for collators */
while ((ncoll = TAILQ_FIRST(&conn->collqh)) != NULL)
__conn_remove_collator(conn, ncoll);
/* Free memory for compressors */
while ((ncomp = TAILQ_FIRST(&conn->compqh)) != NULL)
__conn_remove_compressor(conn, ncomp);
/* Free memory for data sources */
while ((ndsrc = TAILQ_FIRST(&conn->dsrcqh)) != NULL)
__conn_remove_data_source(conn, ndsrc);
WT_TRET(__wt_connection_close(conn));
/* We no longer have a session, don't try to update it. */
session = NULL;
err: API_END_NOTFOUND_MAP(session, ret);
}