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https://github.com/status-im/nimbus-eth1.git
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42bb640443
By introducing the "shared rocksdb instance" concept to the backend, we can remove the "piggybacking" mode , thus reducing the complexity of database initialisation and opening the possibility of extending how write batching works across kvt/aristo. The change makes explicit the hidden shared state that was previously hiding in closures and provides the first step towards simplifying the "commit/persist" interface of coredb, preparing it for optimizations to reduce the "layering tax" that `forked-layers` introduced.
43 lines
1.5 KiB
Nim
43 lines
1.5 KiB
Nim
# nimbus-eth1
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# Copyright (c) 2023-2025 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed
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# except according to those terms.
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## Kvt DB -- Transaction save helper
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## ======================================
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##
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{.push raises: [].}
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import
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./[kvt_desc, kvt_tx_frame]
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# ------------------------------------------------------------------------------
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# Public functions
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# ------------------------------------------------------------------------------
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proc persist*(
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db: KvtDbRef; # Database
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batch: PutHdlRef;
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) =
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## Persistently store data onto backend database. If the system is running
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## without a database backend, the function returns immediately with an
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## error.
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##
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## The function merges all staged data from the top layer cache onto the
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## backend stage area. After that, the top layer cache is cleared.
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##
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## Finally, the staged data are merged into the physical backend database
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## and the staged data area is cleared. Wile performing this last step,
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## the recovery journal is updated (if available.)
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##
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db.txFramePersist(batch)
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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