/* * __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); }