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perf(main): buffer MPV OSD log writes asynchronously

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Move OSD log appends off sync fs calls to reduce main-process blocking under frequent OSD activity. Add buffered flush wiring into quit cleanup so pending log lines are drained best-effort during shutdown.
This commit is contained in:
Kyle Yasuda
2026-02-21 15:51:11 -08:00
parent 10b94ce889
commit 7e1a7df403
13 changed files with 221 additions and 64 deletions
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14
src/main/runtime/mpv-osd-log-main-deps.test.ts
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@@ -5,7 +5,7 @@ import {
createBuildShowMpvOsdMainDepsHandler,
} from './mpv-osd-log-main-deps';
test('append to mpv log main deps map filesystem functions and log path', () => {
test('append to mpv log main deps map filesystem functions and log path', async () => {
const calls: string[] = [];
const deps = createBuildAppendToMpvLogMainDepsHandler({
logPath: '/tmp/mpv.log',
@@ -13,15 +13,19 @@ test('append to mpv log main deps map filesystem functions and log path', () =>
calls.push(`dirname:${targetPath}`);
return '/tmp';
},
mkdirSync: (targetPath) => calls.push(`mkdir:${targetPath}`),
appendFileSync: (_targetPath, data) => calls.push(`append:${data}`),
mkdir: async (targetPath) => {
calls.push(`mkdir:${targetPath}`);
},
appendFile: async (_targetPath, data) => {
calls.push(`append:${data}`);
},
now: () => new Date('2026-02-20T00:00:00.000Z'),
})();
assert.equal(deps.logPath, '/tmp/mpv.log');
assert.equal(deps.dirname('/tmp/mpv.log'), '/tmp');
deps.mkdirSync('/tmp', { recursive: true });
deps.appendFileSync('/tmp/mpv.log', 'line', { encoding: 'utf8' });
await deps.mkdir('/tmp', { recursive: true });
await deps.appendFile('/tmp/mpv.log', 'line', { encoding: 'utf8' });
assert.equal(deps.now().toISOString(), '2026-02-20T00:00:00.000Z');
assert.deepEqual(calls, ['dirname:/tmp/mpv.log', 'mkdir:/tmp', 'append:line']);
});