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Rework the oo1.DB's distinct-per-VFS post-open() step to accept either a batch of SQL or a callback function. Increase OPFS's busy timeout to 10s.

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FossilOrigin-Name: 9feefe253ac487cb52be6bdf91bdd305963266716baa08f2bf9505954ee76321
This commit is contained in:
stephan
2022-12-03 01:59:03 +00:00
parent bb4e4a4840
commit a37fed0f62
5 changed files with 59 additions and 41 deletions
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39
ext/wasm/api/sqlite3-vfs-opfs.c-pp.js
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@ -1163,24 +1163,27 @@ const installOpfsVfs = function callee(options){
OpfsDb.prototype = Object.create(sqlite3.oo1.DB.prototype);
sqlite3.oo1.DB.dbCtorHelper.setVfsPostOpenSql(
opfsVfs.pointer,
[
/* Truncate journal mode is faster than delete for
this vfs, per speedtest1. That gap seems to have closed with
Chrome version 108 or 109, but "persist" is very roughly 5-6%
faster than truncate in initial tests. */
"pragma journal_mode=persist;",
/* Set a default busy-timeout handler to help OPFS dbs
deal with multi-tab/multi-worker contention. */
"pragma busy_timeout=5000;",
/*
This vfs benefits hugely from cache on moderate/large
speedtest1 --size 50 and --size 100 workloads. We currently
rely on setting a non-default cache size when building
sqlite3.wasm. If that policy changes, the cache can
be set here.
*/
//"pragma cache_size=-16384;"
].join("")
function(oo1Db, sqlite3){
/* Set a relatively high default busy-timeout handler to
help OPFS dbs deal with multi-tab/multi-worker
contention. */
sqlite3.capi.sqlite3_busy_timeout(oo1Db, 10000);
sqlite3.capi.sqlite3_exec(oo1Db, [
/* Truncate journal mode is faster than delete for
this vfs, per speedtest1. That gap seems to have closed with
Chrome version 108 or 109, but "persist" is very roughly 5-6%
faster than truncate in initial tests. */
"pragma journal_mode=persist;",
/*
This vfs benefits hugely from cache on moderate/large
speedtest1 --size 50 and --size 100 workloads. We
currently rely on setting a non-default cache size when
building sqlite3.wasm. If that policy changes, the cache
can be set here.
*/
"pragma cache_size=-16384;"
], 0, 0, 0);
}
);
}