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OPFS VFS: add the opfs-unlock-asap=1 URI flag which tells the VFS to release implicit locks ASAP instead of during VFS idle time. This improves concurrency notably in the test app but brings a significant performance penalty in speedtest1 (roughly 4x slowdown). This is not the final word in OPFS concurrency, but gets us a step further.

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FossilOrigin-Name: 9542f9ce9e023b489e2d93661f719fb0751c1e28f72fded9d3c2156d5777e7b1
This commit is contained in:
stephan
2022-11-26 15:24:58 +00:00
parent 902ea83925 df5d06d03e
commit 4245667e35
8 changed files with 157 additions and 64 deletions
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5
ext/wasm/api/sqlite3-api-oo1.js
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@ -201,9 +201,8 @@ self.sqlite3ApiBootstrap.initializers.push(function(sqlite3){
*/
dbCtorHelper.normalizeArgs = function(filename=':memory:',flags = 'c',vfs = null){
const arg = {};
if(1===arguments.length && 'object'===typeof arguments[0]){
const x = arguments[0];
Object.keys(x).forEach((k)=>arg[k] = x[k]);
if(1===arguments.length && arguments[0] && 'object'===typeof arguments[0]){
Object.assign(arg, arguments[0]);
if(undefined===arg.flags) arg.flags = 'c';
if(undefined===arg.vfs) arg.vfs = null;
if(undefined===arg.filename) arg.filename = ':memory:';