From: Georgy Kirichenko <georgy@tarantool.org> To: tarantool-patches@freelists.org Cc: Georgy Kirichenko <georgy@tarantool.org> Subject: [tarantool-patches] [PATCH v5 3/7] txn: get rid of fiber_gc from txn_rollback Date: Sat, 22 Jun 2019 00:48:17 +0300 [thread overview] Message-ID: <45c90bd7f82c44dd4965159100c7c436cb6e21bb.1561153472.git.georgy@tarantool.org> (raw) In-Reply-To: <cover.1561153472.git.georgy@tarantool.org> Refactoring: don't touch a fiber gc storage on a transaction rollback explicitly. This relaxes dependencies between fiber and transaction life cycles. Prerequisites: #1254 --- src/box/applier.cc | 9 ++++++--- src/box/box.cc | 6 ++++-- src/box/call.c | 22 ++++++++++++++++------ src/box/memtx_engine.c | 3 ++- src/box/txn.c | 23 ++++++++++++----------- src/box/txn.h | 7 +++++-- src/box/vy_scheduler.c | 10 +++++++--- 7 files changed, 52 insertions(+), 28 deletions(-) diff --git a/src/box/applier.cc b/src/box/applier.cc index d12a835d0..6f93759a8 100644 --- a/src/box/applier.cc +++ b/src/box/applier.cc @@ -190,7 +190,8 @@ apply_initial_join_row(struct xrow_header *row) fiber_gc(); return rc; rollback: - txn_rollback(); + txn_rollback(txn); + fiber_gc(); return -1; } @@ -235,7 +236,8 @@ apply_final_join_row(struct xrow_header *row) if (txn == NULL) return -1; if (apply_row(row) != 0) { - txn_rollback(); + txn_rollback(txn); + fiber_gc(); return -1; } if (txn_commit(txn) != 0) @@ -633,7 +635,8 @@ applier_apply_tx(struct stailq *rows) return txn_commit(txn); rollback: - txn_rollback(); + txn_rollback(txn); + fiber_gc(); return -1; } diff --git a/src/box/box.cc b/src/box/box.cc index a32f1ba0f..d53b0cdc5 100644 --- a/src/box/box.cc +++ b/src/box/box.cc @@ -213,8 +213,10 @@ box_process_rw(struct request *request, struct space *space, return 0; rollback: - if (is_autocommit) - txn_rollback(); + if (is_autocommit) { + txn_rollback(txn); + fiber_gc(); + } error: if (return_tuple) tuple_unref(tuple); diff --git a/src/box/call.c b/src/box/call.c index 56da53fb3..7f6fc8bba 100644 --- a/src/box/call.c +++ b/src/box/call.c @@ -208,14 +208,18 @@ box_process_call(struct call_request *request, struct port *port) if (orig_credentials) fiber_set_user(fiber(), orig_credentials); + struct txn *txn = in_txn(); if (rc != 0) { - txn_rollback(); + if (txn != NULL) + txn_rollback(txn); + fiber_gc(); return -1; } - if (in_txn()) { + if (txn != NULL) { diag_set(ClientError, ER_FUNCTION_TX_ACTIVE); - txn_rollback(); + txn_rollback(txn); + fiber_gc(); return -1; } @@ -229,14 +233,20 @@ box_process_eval(struct call_request *request, struct port *port) /* Check permissions */ if (access_check_universe(PRIV_X) != 0) return -1; + struct txn *txn; if (box_lua_eval(request, port) != 0) { - txn_rollback(); + txn = in_txn(); + if (txn != NULL) + txn_rollback(txn); + fiber_gc(); return -1; } - if (in_txn()) { + txn = in_txn(); + if (txn != NULL) { diag_set(ClientError, ER_FUNCTION_TX_ACTIVE); - txn_rollback(); + txn_rollback(txn); + fiber_gc(); return -1; } diff --git a/src/box/memtx_engine.c b/src/box/memtx_engine.c index dae9955b2..f371d147f 100644 --- a/src/box/memtx_engine.c +++ b/src/box/memtx_engine.c @@ -274,7 +274,8 @@ memtx_engine_recover_snapshot_row(struct memtx_engine *memtx, return -1; /* no access checks here - applier always works with admin privs */ if (space_apply_initial_join_row(space, &request) != 0) { - txn_rollback(); + txn_rollback(txn); + fiber_gc(); return -1; } int rc = txn_commit(txn); diff --git a/src/box/txn.c b/src/box/txn.c index 583ae6ce0..1eb4db6a3 100644 --- a/src/box/txn.c +++ b/src/box/txn.c @@ -345,8 +345,10 @@ txn_write_to_wal(struct txn *txn) struct journal_entry *req = journal_entry_new(txn->n_new_rows + txn->n_applier_rows, &txn->region); - if (req == NULL) + if (req == NULL) { + txn_rollback(txn); return -1; + } struct txn_stmt *stmt; struct xrow_header **remote_row = req->rows; @@ -419,7 +421,7 @@ txn_commit(struct txn *txn) if (txn->n_new_rows + txn->n_applier_rows > 0) { txn->signature = txn_write_to_wal(txn); if (txn->signature < 0) - goto fail; + return -1; } /* * Engine can be NULL if transaction contains IPROTO_NOP @@ -443,7 +445,7 @@ txn_commit(struct txn *txn) txn_free(txn); return 0; fail: - txn_rollback(); + txn_rollback(txn); return -1; } @@ -457,11 +459,9 @@ txn_rollback_stmt(struct txn *txn) } void -txn_rollback() +txn_rollback(struct txn *txn) { - struct txn *txn = in_txn(); - if (txn == NULL) - return; + assert(txn == in_txn()); trigger_clear(&txn->fiber_on_stop); if (txn->engine) engine_rollback(txn->engine, txn); @@ -473,8 +473,6 @@ txn_rollback() panic("rollback trigger failed"); } - /** Free volatile txn memory. */ - fiber_gc(); fiber_set_txn(fiber(), NULL); txn_free(txn); } @@ -550,11 +548,14 @@ int box_txn_rollback() { struct txn *txn = in_txn(); + if (txn == NULL) + return 0; if (txn && txn->in_sub_stmt) { diag_set(ClientError, ER_ROLLBACK_IN_SUB_STMT); return -1; } - txn_rollback(); /* doesn't throw */ + txn_rollback(txn); /* doesn't throw */ + fiber_gc(); return 0; } @@ -632,6 +633,6 @@ txn_on_stop(struct trigger *trigger, void *event) { (void) trigger; (void) event; - txn_rollback(); /* doesn't yield or fail */ + txn_rollback(in_txn()); /* doesn't yield or fail */ } diff --git a/src/box/txn.h b/src/box/txn.h index 33926f6f3..f20428fad 100644 --- a/src/box/txn.h +++ b/src/box/txn.h @@ -221,9 +221,12 @@ txn_begin(); int txn_commit(struct txn *txn); -/** Rollback a transaction, if any. */ +/** + * Rollback a transaction. + * @pre txn == in_txn() + */ void -txn_rollback(); +txn_rollback(struct txn *txn); /** * Roll back the transaction but keep the object around. diff --git a/src/box/vy_scheduler.c b/src/box/vy_scheduler.c index ed8f7dd86..0df55818f 100644 --- a/src/box/vy_scheduler.c +++ b/src/box/vy_scheduler.c @@ -889,18 +889,22 @@ vy_deferred_delete_batch_process_f(struct cmsg *cmsg) for (int i = 0; i < batch->count; i++) { if (vy_deferred_delete_process_one(deferred_delete_space, pk->space_id, pk->mem_format, - &batch->stmt[i]) != 0) - goto fail; + &batch->stmt[i]) != 0) { + goto fail_rollback; + } } if (txn_commit(txn) != 0) goto fail; fiber_gc(); return; + +fail_rollback: + txn_rollback(txn); + fiber_gc(); fail: batch->is_failed = true; diag_move(diag_get(), &batch->diag); - txn_rollback(); } /** -- 2.22.0
next prev parent reply other threads:[~2019-06-21 21:48 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-06-21 21:48 [tarantool-patches] [PATCH v5 0/7] Parallel applier Georgy Kirichenko 2019-06-21 21:48 ` [tarantool-patches] [PATCH v5 1/7] txn: unref statement at txn_free Georgy Kirichenko 2019-06-21 21:48 ` [tarantool-patches] [PATCH v5 2/7] txn: get rid of autocommit from a txn structure Georgy Kirichenko 2019-06-21 21:48 ` Georgy Kirichenko [this message] 2019-06-21 21:48 ` [tarantool-patches] [PATCH v5 4/7] wal: introduce a journal entry finalization callback Georgy Kirichenko 2019-06-21 21:48 ` [tarantool-patches] [PATCH v5 5/7] txn: introduce asynchronous txn commit Georgy Kirichenko 2019-06-21 21:48 ` [tarantool-patches] [PATCH v5 6/7] applier: apply transaction in parallel Georgy Kirichenko 2019-06-21 21:48 ` [tarantool-patches] [PATCH v5 7/7] test: fix flaky test Georgy Kirichenko 2019-06-25 16:08 ` [tarantool-patches] [PATCH v5 0/7] Parallel applier Vladimir Davydov
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