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* Add several convenience links to the OPFS VFS concurrency tester app for ↵stephan2024-07-13
| | | | | launching it with various combinations of options. FossilOrigin-Name: 397d6a18f173a46b60a867fc45611045c76316d6602a3df8b4dc4ba45e1348ce
* Enhance oo1.DB.exec() to simplify returning whole result sets.stephan2023-01-28
| | | FossilOrigin-Name: 7b168ee2af09f04b41a6ef4c14ccaddc0c9b0bfe9dc1e6a86d8f5317606bd78d
* Rework the oo1.DB's distinct-per-VFS post-open() step to accept either a ↵stephan2022-12-03
| | | | | batch of SQL or a callback function. Increase OPFS's busy timeout to 10s. FossilOrigin-Name: 9feefe253ac487cb52be6bdf91bdd305963266716baa08f2bf9505954ee76321
* OPFS VFS: translate createSyncAccessHandle() exceptions which appear to be ↵stephan2022-12-02
| | | | | locking violations to SQLITE_BUSY. This seems to improve concurrency considerably even with a reduced retry count of 5 (was 6). FossilOrigin-Name: 0d36021d107d3afca190ad61c3380536ad0cc2d493d345d48f9f9c1191741128
* Doc and logging text tweaks in the OPFS async proxy and test app.stephan2022-11-30
| | | FossilOrigin-Name: 7ce8608e221924d2c7067687eb6eef0f3cab181d5b4132e55a67d8514b6ce94b
* Rename one instance of opfs.OpfsDb to oo1.OpfsDb, as per [0c5c51f4fb04].stephan2022-11-29
| | | FossilOrigin-Name: 75b04c9b302ec66749d8f072a49e61de9640b868bec99eadeb5b4bdef354c336
* Internal restructuring of the OPFS sqlite3_vfs in order to facilitate ↵stephan2022-11-29
| | | | | certain experimentation and improve error reporting/hints if it cannot be activated. Deprecate the name sqlite3.opfs.OpfsDb, preferring sqlite3.oo1.OpfsDb for consistency with JsStorageDb and any future DB subclasses. FossilOrigin-Name: 0c5c51f4fb04a4b90c50ec9704cfea9a3fb7d7d0ee55c1b0d4476129188217a6
* More work on the OPFS concurrency testing app.stephan2022-11-24
| | | FossilOrigin-Name: c0458caca3508d5d252f9b5198bda4f51a5c1874540f014b17e409f2daab1706
* OPFS concurrency test: add a URL flag to enable/disable unlock-asap mode.stephan2022-11-23
| | | FossilOrigin-Name: 1c1bf22eadae2a5a7d4358e7cdd22641c2efb9296f42e7376749293b3a58b114
* Add an experimental OPFS VFS-specific URI flag, opfs-unlock-asap, which ↵stephan2022-11-23
| | | | | tells the VFS to release implicit locks ASAP. This permits higher concurrency but hurts performance considerably. This may or may not be obsoleted by other concurrency-related experimentation. FossilOrigin-Name: d23c917013485ec2793125221f3936b05c39d6eca941629fb819b6b4aa714520
* Initial infrastructure for adding a mode to the OPFS VFS which causes ↵stephan2022-11-23
| | | | | implicit locks to be released ASAP, which increases concurrency at the cost of performance. FossilOrigin-Name: c5b7a9715a13b696ab3ee965aa0a310f59b65f07cecd72faa2e3504bfd8eb632
* OPFS concurrency tester: ensure that the work interval timer does not ↵stephan2022-11-23
| | | | | overlap with the work time. FossilOrigin-Name: 8f2076553bc486ea6a17934695ecc02217461af2082d891697b62aab89bd1b43
* OPFS contention test: give each worker a distinct recognizable name instead ↵stephan2022-11-21
| | | | | of a random one. FossilOrigin-Name: 5f564bf7de7ce3ad7bedb5f06b3086ceaec55da768a60d74059fa4fba4328567
* More tweaking of OPFS concurrency measures and the related test app.stephan2022-11-21
| | | FossilOrigin-Name: a8d4da1501d411085ec2fd48c4a056c8b1d97ef3c3203c5b403a854ac2864870
* Resolve missing SQLITE_LOCKED result code which triggered a new (since last ↵stephan2022-11-21
| | | | | checkin) exception in the OPFS VFS. Improve output of the OPFS contention tester app. FossilOrigin-Name: 2debbbca33bd4170a1dc4dbb5eb3e68523e51d289b06c551e5560ac4e32e433b
* Add test app for experimenting with multi-worker OPFS concurrency. Tweak ↵stephan2022-11-21
OPFS VFS to significantly improve the otherwise "unfortunate" concurrency situation. FossilOrigin-Name: 96f76e7616f8157a342b9e1c42f7b1feab200d182268871a2b25f67d4ee2564c
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