/* * __wt_txn_release -- * Release the resources associated with the current transaction. */ void __wt_txn_release(WT_SESSION_IMPL *session) { WT_TXN *txn; WT_TXN_GLOBAL *txn_global; WT_TXN_STATE *txn_state; txn = &session->txn; txn_global = &S2C(session)->txn_global; txn_state = WT_SESSION_TXN_STATE(session); WT_ASSERT(session, txn->mod_count == 0); txn->notify = NULL; /* Clear the transaction's ID from the global table. */ if (WT_SESSION_IS_CHECKPOINT(session)) { WT_ASSERT(session, txn_state->id == WT_TXN_NONE); txn->id = txn_global->checkpoint_state.id = txn_global->checkpoint_state.pinned_id = WT_TXN_NONE; /* * Be extra careful to cleanup everything for checkpoints: once * the global checkpoint ID is cleared, we can no longer tell * if this session is doing a checkpoint. */ txn_global->checkpoint_id = 0; } else if (F_ISSET(txn, WT_TXN_HAS_ID)) { WT_ASSERT(session, !WT_TXNID_LT(txn->id, txn_global->last_running)); WT_ASSERT(session, txn_state->id != WT_TXN_NONE && txn->id != WT_TXN_NONE); WT_PUBLISH(txn_state->id, WT_TXN_NONE); txn->id = WT_TXN_NONE; } __wt_txn_clear_commit_timestamp(session); __wt_txn_clear_read_timestamp(session); /* Free the scratch buffer allocated for logging. */ __wt_logrec_free(session, &txn->logrec); /* Discard any memory from the session's stash that we can. */ WT_ASSERT(session, __wt_session_gen(session, WT_GEN_SPLIT) == 0); __wt_stash_discard(session); /* * Reset the transaction state to not running and release the snapshot. */ __wt_txn_release_snapshot(session); txn->isolation = session->isolation; /* Ensure the transaction flags are cleared on exit */ txn->flags = 0; }
/* * __wt_txn_release -- * Release the resources associated with the current transaction. */ void __wt_txn_release(WT_SESSION_IMPL *session) { WT_TXN *txn; WT_TXN_GLOBAL *txn_global; WT_TXN_STATE *txn_state; txn = &session->txn; WT_ASSERT(session, txn->mod_count == 0); txn->notify = NULL; txn_global = &S2C(session)->txn_global; txn_state = WT_SESSION_TXN_STATE(session); /* Clear the transaction's ID from the global table. */ if (WT_SESSION_IS_CHECKPOINT(session)) { WT_ASSERT(session, txn_state->id == WT_TXN_NONE); txn->id = WT_TXN_NONE; /* Clear the global checkpoint transaction IDs. */ txn_global->checkpoint_id = 0; txn_global->checkpoint_pinned = WT_TXN_NONE; } else if (F_ISSET(txn, WT_TXN_HAS_ID)) { WT_ASSERT(session, !WT_TXNID_LT(txn->id, txn_global->last_running)); WT_ASSERT(session, txn_state->id != WT_TXN_NONE && txn->id != WT_TXN_NONE); WT_PUBLISH(txn_state->id, WT_TXN_NONE); txn->id = WT_TXN_NONE; } /* Free the scratch buffer allocated for logging. */ __wt_logrec_free(session, &txn->logrec); /* Discard any memory from the session's split stash that we can. */ WT_ASSERT(session, session->split_gen == 0); if (session->split_stash_cnt > 0) __wt_split_stash_discard(session); /* * Reset the transaction state to not running and release the snapshot. */ __wt_txn_release_snapshot(session); txn->isolation = session->isolation; /* Ensure the transaction flags are cleared on exit */ txn->flags = 0; }
/* * __wt_txn_release -- * Release the resources associated with the current transaction. */ void __wt_txn_release(WT_SESSION_IMPL *session) { WT_TXN *txn; WT_TXN_GLOBAL *txn_global; WT_TXN_STATE *txn_state; int was_oldest; txn = &session->txn; WT_ASSERT(session, txn->mod_count == 0); txn->notify = NULL; txn_global = &S2C(session)->txn_global; txn_state = WT_SESSION_TXN_STATE(session); was_oldest = 0; /* Clear the transaction's ID from the global table. */ if (WT_SESSION_IS_CHECKPOINT(session)) { WT_ASSERT(session, txn_state->id == WT_TXN_NONE); txn->id = WT_TXN_NONE; /* Clear the global checkpoint transaction IDs. */ txn_global->checkpoint_id = 0; txn_global->checkpoint_pinned = WT_TXN_NONE; } else if (F_ISSET(txn, WT_TXN_HAS_ID)) { WT_ASSERT(session, !WT_TXNID_LT(txn->id, txn_global->last_running)); WT_ASSERT(session, txn_state->id != WT_TXN_NONE && txn->id != WT_TXN_NONE); WT_PUBLISH(txn_state->id, WT_TXN_NONE); /* Quick check for the oldest transaction. */ was_oldest = (txn->id == txn_global->last_running); txn->id = WT_TXN_NONE; } /* Free the scratch buffer allocated for logging. */ __wt_logrec_free(session, &txn->logrec); /* Discard any memory from the session's split stash that we can. */ WT_ASSERT(session, session->split_gen == 0); if (session->split_stash_cnt > 0) __wt_split_stash_discard(session); /* * Reset the transaction state to not running and release the snapshot. */ __wt_txn_release_snapshot(session); txn->isolation = session->isolation; /* Ensure the transaction flags are cleared on exit */ txn->flags = 0; /* * When the oldest transaction in the system completes, bump the oldest * ID. This is racy and so not guaranteed, but in practice it keeps * the oldest ID from falling too far behind. */ if (was_oldest) __wt_txn_update_oldest(session, 1); }