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From: Patrick Steinhardt <ps@pks.im>
To: Justin Tobler <jltobler@gmail.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 10/16] reftable/block: store block pointer in the block iterator
Date: Mon, 7 Apr 2025 14:31:04 +0200	[thread overview]
Message-ID: <Z_PFiKs9s3R9pVW6@pks.im> (raw)
In-Reply-To: <u4h53ukh5uxk4r4zy5iyniob4xf7qmtem7j2kp45sknfbljwuv@ntdojrh6aakb>

On Wed, Apr 02, 2025 at 03:56:30PM -0500, Justin Tobler wrote:
> On 25/03/31 10:41AM, Patrick Steinhardt wrote:
> > The block iterator requires access to a bunch of data from the
> > underlying `reftable_block` that it is iterating over. This data is
> > stored by copying over relevant data into a separate set of variables.
> > This has multiple downsides:
> > 
> >   - We require more storage space than necessary. This is more of a
> >     theoretical issue as we shouldn't ever have many blocks.
> > 
> >   - We have to perform more bookkeeping, and the variable names are
> >     inconsistent across the two data structures. This can lead to some
> >     confusion.
> > 
> >   - The lifetime of the block iterator is tied to the block anyway, but
> >     we hide that a bit by only storing pointers into the block.
> 
> s/into/in/

I think "into" is right. What I want to say is that the pointers point
into the block itself, not that we're storing pointers in the block.
I'll add "pointing" to clarify.

Patrick

  reply	other threads:[~2025-04-07 12:31 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-31  8:41 [PATCH 00/16] reftable: overhaul the API to expose access to blocks Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 01/16] reftable: fix formatting of the license header Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 02/16] reftable/reader: rename data structure to "table" Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 03/16] reftable/blocksource: consolidate code into a single file Patrick Steinhardt
2025-04-02 17:42   ` Justin Tobler
2025-04-03 10:42   ` Karthik Nayak
2025-03-31  8:41 ` [PATCH 04/16] reftable/block: simplify how we track restart points Patrick Steinhardt
2025-04-02 18:08   ` Justin Tobler
2025-04-03 15:17   ` Karthik Nayak
2025-04-07 12:31     ` Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 05/16] reftable/table: move reading block into block reader Patrick Steinhardt
2025-04-02 20:13   ` Justin Tobler
2025-04-07 12:31     ` Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 06/16] reftable/block: rename `block` to `block_data` Patrick Steinhardt
2025-04-02 20:26   ` Justin Tobler
2025-04-07 12:30     ` Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 07/16] reftable/block: rename `block_reader` to `reftable_block` Patrick Steinhardt
2025-04-02 20:39   ` Justin Tobler
2025-04-07 12:30     ` Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 08/16] git-zlib: use `struct z_stream_s` instead of typedef Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 09/16] reftable/block: create public interface for reading blocks Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 10/16] reftable/block: store block pointer in the block iterator Patrick Steinhardt
2025-04-02 20:56   ` Justin Tobler
2025-04-07 12:31     ` Patrick Steinhardt [this message]
2025-03-31  8:41 ` [PATCH 11/16] reftable/block: make block iterators reseekable Patrick Steinhardt
2025-04-02 21:24   ` Justin Tobler
2025-04-07 12:30     ` Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 12/16] reftable/block: expose a generic iterator over reftable records Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 13/16] reftable/table: add `reftable_table` to the public interface Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 14/16] reftable/table: introduce iterator for table blocks Patrick Steinhardt
2025-04-01 22:08   ` Junio C Hamano
2025-04-02  7:21     ` Patrick Steinhardt
2025-04-02 21:46   ` Justin Tobler
2025-04-07 12:31     ` Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 15/16] reftable/constants: make block types part of the public interface Patrick Steinhardt
2025-03-31  8:41 ` [PATCH 16/16] reftable/table: move printing logic into test helper Patrick Steinhardt
2025-04-02 21:52   ` Justin Tobler
2025-04-07 13:16 ` [PATCH v2 00/16] reftable: overhaul the API to expose access to blocks Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 01/16] reftable: fix formatting of the license header Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 02/16] reftable/reader: rename data structure to "table" Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 03/16] reftable/blocksource: consolidate code into a single file Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 04/16] reftable/block: simplify how we track restart points Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 05/16] reftable/table: move reading block into block reader Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 06/16] reftable/block: rename `block` to `block_data` Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 07/16] reftable/block: rename `block_reader` to `reftable_block` Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 08/16] git-zlib: use `struct z_stream_s` instead of typedef Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 09/16] reftable/block: create public interface for reading blocks Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 10/16] reftable/block: store block pointer in the block iterator Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 11/16] reftable/block: make block iterators reseekable Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 12/16] reftable/block: expose a generic iterator over reftable records Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 13/16] reftable/table: add `reftable_table` to the public interface Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 14/16] reftable/table: introduce iterator for table blocks Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 15/16] reftable/constants: make block types part of the public interface Patrick Steinhardt
2025-04-07 13:16   ` [PATCH v2 16/16] reftable/table: move printing logic into test helper Patrick Steinhardt
2025-04-14 19:42   ` [PATCH v2 00/16] reftable: overhaul the API to expose access to blocks Justin Tobler

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