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Add a test/debug mechanism to shut down the OPFS async listener so that it can be inspected (it normally can't be because its tight event-listening loop ties up the thread) and then restarted.

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FossilOrigin-Name: 7d0bcff4e9b899cd25b393b9f0a02c5dcee2e229f0a0fa01719c7dcd7dcbe7c1
This commit is contained in:
stephan
2022-10-04 00:54:00 +00:00
parent 88838f6b95
commit 3c272ba380
4 changed files with 51 additions and 14 deletions
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20
ext/wasm/api/sqlite3-api-opfs.js
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@ -142,7 +142,7 @@ const installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri){
"\nTotal of",n,"op(s) for",t,
"ms (incl. "+w+" ms of waiting on the async side)");
console.log("Serialization metrics:",metrics.s11n);
opRun('async-metrics');
W.postMessage({type:'opfs-async-metrics'});
},
reset: function(){
let k;
@ -285,7 +285,8 @@ const installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri){
state.opIds.xTruncate = i++;
state.opIds.xWrite = i++;
state.opIds.mkdir = i++;
state.opIds['async-metrics'] = i++;
state.opIds['opfs-async-metrics'] = i++;
state.opIds['opfs-async-shutdown'] = i++;
state.sabOP = new SharedArrayBuffer(i * 4/*sizeof int32*/);
opfsUtil.metrics.reset();
}
@ -888,6 +889,20 @@ const installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri){
);
};
/**
Only for test/development use.
*/
opfsUtil.debug = {
asyncShutdown: ()=>{
warn("Shutting down OPFS async listener. OPFS will no longer work.");
opRun('opfs-async-shutdown');
},
asyncRestart: ()=>{
warn("Attempting to restart OPFS async listener. Might work, might not.");
W.postMessage({type: 'opfs-async-restart'});
}
};
//TODO to support fiddle db upload:
//opfsUtil.createFile = function(absName, content=undefined){...}
@ -1028,6 +1043,7 @@ const installOpfsVfs = function callee(asyncProxyUri = callee.defaultProxyUri){
break;
}
};
})/*thePromise*/;
return thePromise;
}/*installOpfsVfs()*/;