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Add sqlite3_wasm_vfs_create_file() to replace Emscripten's FS.createDataFile() in a (mostly) VFS-agnostic way. Add a test for worker1's export (to bytearray) support. Re-add worker1 open-from-bytearray using sqlite3_wasm_vfs_create_file() but it's untested (requires a new interactive test app or maybe reconsideration).

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FossilOrigin-Name: b35e1225c91a3cadc0d25af1e4e790237256d194990faa13190e343ed03e11c5
This commit is contained in:
stephan
2022-11-02 11:53:31 +00:00
parent faff0410dc
commit f45c33701d
10 changed files with 264 additions and 66 deletions
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16
ext/wasm/api/sqlite3-opfs-async-proxy.js
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@ -230,6 +230,16 @@ const storeAndNotify = (opName, value)=>{
const affirmNotRO = function(opName,fh){
if(fh.readOnly) toss(opName+"(): File is read-only: "+fh.filenameAbs);
};
const affirmLocked = function(opName,fh){
//if(!fh.syncHandle) toss(opName+"(): File does not have a lock: "+fh.filenameAbs);
/**
Currently a no-op, as speedtest1 triggers xRead() without a
lock (that seems like a bug but it's currently uninvestigated).
This means, however, that some OPFS VFS routines may trigger
acquisition of a lock but never let it go until xUnlock() is
called (which it likely won't be if xLock() was not called).
*/
};
/**
We track 2 different timers: the "metrics" timer records how much
@ -395,6 +405,7 @@ const vfsAsyncImpls = {
let rc;
wTimeStart('xFileSize');
try{
affirmLocked('xFileSize',fh);
rc = await (await getSyncHandle(fh)).getSize();
state.s11n.serialize(Number(rc));
rc = 0;
@ -473,6 +484,7 @@ const vfsAsyncImpls = {
let rc = 0, nRead;
const fh = __openFiles[fid];
try{
affirmLocked('xRead',fh);
wTimeStart('xRead');
nRead = (await getSyncHandle(fh)).read(
fh.sabView.subarray(0, n),
@ -515,6 +527,7 @@ const vfsAsyncImpls = {
const fh = __openFiles[fid];
wTimeStart('xTruncate');
try{
affirmLocked('xTruncate',fh);
affirmNotRO('xTruncate', fh);
await (await getSyncHandle(fh)).truncate(size);
}catch(e){
@ -547,9 +560,10 @@ const vfsAsyncImpls = {
xWrite: async function(fid/*sqlite3_file pointer*/,n,offset64){
mTimeStart('xWrite');
let rc;
const fh = __openFiles[fid];
wTimeStart('xWrite');
try{
const fh = __openFiles[fid];
affirmLocked('xWrite',fh);
affirmNotRO('xWrite', fh);
rc = (
n === (await getSyncHandle(fh))