[tarantool-patches] Re: [PATCH v3 06/14] txn: get rid of fiber_gc from txn_rollback

[Konstantin Osipov]

* Georgy Kirichenko <georgy at tarantool.org> [19/06/09 23:47]:
> Don't touch a fiber gc storage on a transaction rollback explicitly.
> This relaxes dependencies between fiber and transaction life cycles.
> 

Generally, it's quite difficult to track what review comments
you addressed since you didn't reply to the review email :(

There is also no link to the branch :(


> Prerequisites: #1254
> ---
>  src/box/applier.cc     |  8 +++++---
>  src/box/box.cc         | 14 +++++++++-----
>  src/box/call.c         | 22 ++++++++++++++++------
>  src/box/memtx_engine.c |  3 ++-
>  src/box/txn.c          | 35 +++++++++++++++++------------------
>  src/box/txn.h          |  8 ++++++--
>  src/box/vy_scheduler.c | 10 +++++++---
>  7 files changed, 62 insertions(+), 38 deletions(-)
> 
> diff --git a/src/box/applier.cc b/src/box/applier.cc
> index e3203a4c8..5a92f6109 100644
> --- a/src/box/applier.cc
> +++ b/src/box/applier.cc
> @@ -190,7 +190,7 @@ apply_initial_join_row(struct xrow_header *row)
>  	fiber_gc();
>  	return rc;
>  rollback:
> -	txn_rollback();
> +	txn_rollback(txn);
>  	return -1;
>  }

shouldn't there be a fiber_gc() here?

> @@ -334,7 +336,7 @@ apply_wal_row(struct xstream *stream, struct xrow_header *row)
>  		}
>  		if (box_process_rw(&request, space, NULL) != 0) {
>  			say_error("error applying row: %s", request_str(&request));
> -			txn_rollback();
> +			txn_rollback(txn);

and here?

> @@ -395,7 +401,7 @@ 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;
>  	}

I still don't understand this change.


-- 
Konstantin Osipov, Moscow, Russia