/*
* __lsm_tree_open --
* Open an LSM tree structure.
*/
static int
__lsm_tree_open(
WT_SESSION_IMPL *session, const char *uri, WT_LSM_TREE **treep)
{
WT_DECL_RET;
WT_LSM_TREE *lsm_tree;
WT_ASSERT(session, F_ISSET(session, WT_SESSION_SCHEMA_LOCKED));
/* Make sure no one beat us to it. */
TAILQ_FOREACH(lsm_tree, &S2C(session)->lsmqh, q)
if (strcmp(uri, lsm_tree->name) == 0) {
*treep = lsm_tree;
return (0);
}
/* Try to open the tree. */
WT_RET(__wt_calloc_def(session, 1, &lsm_tree));
WT_ERR(__wt_rwlock_alloc(session, "lsm tree", &lsm_tree->rwlock));
WT_ERR(__wt_cond_alloc(session, "lsm ckpt", 0, &lsm_tree->work_cond));
WT_ERR(__lsm_tree_set_name(session, lsm_tree, uri));
WT_ERR(__wt_lsm_meta_read(session, lsm_tree));
/*
* Sanity check the configuration. Do it now since this is the first
* time we have the LSM tree configuration.
*/
WT_ERR(__lsm_tree_open_check(session, lsm_tree));
if (lsm_tree->nchunks == 0) {
F_SET(lsm_tree, WT_LSM_TREE_NEED_SWITCH);
WT_ERR(__wt_lsm_tree_switch(session, lsm_tree));
}
/* Set the generation number so cursors are opened on first usage. */
lsm_tree->dsk_gen = 1;
/* Now the tree is setup, make it visible to others. */
lsm_tree->refcnt = 1;
TAILQ_INSERT_HEAD(&S2C(session)->lsmqh, lsm_tree, q);
F_SET(lsm_tree, WT_LSM_TREE_OPEN);
WT_ERR(__lsm_tree_start_worker(session, lsm_tree));
*treep = lsm_tree;
if (0) {
err: WT_TRET(__lsm_tree_discard(session, lsm_tree));
}
return (ret);
}
/*
* __lsm_tree_open --
* Open an LSM tree structure.
*/
static int
__lsm_tree_open(
WT_SESSION_IMPL *session, const char *uri, WT_LSM_TREE **treep)
{
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
WT_LSM_TREE *lsm_tree;
conn = S2C(session);
lsm_tree = NULL;
WT_ASSERT(session, F_ISSET(session, WT_SESSION_SCHEMA_LOCKED));
/* Start the LSM manager thread if it isn't running. */
if (WT_ATOMIC_CAS4(conn->lsm_manager.lsm_workers, 0, 1))
WT_RET(__wt_lsm_manager_start(session));
/* Make sure no one beat us to it. */
TAILQ_FOREACH(lsm_tree, &S2C(session)->lsmqh, q)
if (strcmp(uri, lsm_tree->name) == 0) {
*treep = lsm_tree;
return (0);
}
/* Try to open the tree. */
WT_RET(__wt_calloc_def(session, 1, &lsm_tree));
WT_ERR(__wt_rwlock_alloc(session, &lsm_tree->rwlock, "lsm tree"));
WT_ERR(__lsm_tree_set_name(session, lsm_tree, uri));
WT_ERR(__wt_lsm_meta_read(session, lsm_tree));
/*
* Sanity check the configuration. Do it now since this is the first
* time we have the LSM tree configuration.
*/
WT_ERR(__lsm_tree_open_check(session, lsm_tree));
if (lsm_tree->nchunks == 0) {
F_SET(lsm_tree, WT_LSM_TREE_NEED_SWITCH);
WT_ERR(__wt_lsm_tree_switch(session, lsm_tree));
}
/* Set the generation number so cursors are opened on first usage. */
lsm_tree->dsk_gen = 1;
/*
* Setup reference counting. Use separate reference counts for tree
* handles and queue entries, so that queue entries don't interfere
* with getting handles exclusive.
*/
lsm_tree->refcnt = 1;
lsm_tree->queue_ref = 0;
/* Set a flush timestamp as a baseline. */
WT_ERR(__wt_epoch(session, &lsm_tree->last_flush_ts));
/* Now the tree is setup, make it visible to others. */
TAILQ_INSERT_HEAD(&S2C(session)->lsmqh, lsm_tree, q);
F_SET(lsm_tree, WT_LSM_TREE_ACTIVE | WT_LSM_TREE_OPEN);
*treep = lsm_tree;
if (0) {
err: WT_TRET(__lsm_tree_discard(session, lsm_tree));
}
return (ret);
}
