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c-tier loader: TEMPORARY debug log of every Module.print arg

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The deployed loader emits chunks with currentOnChunk(line + '\n'),
which my node tests confirm produces clean per-line chunks
('tick 0\n', 'tick 1\n', ...). But fox still reports horizontal
output in his playground tab — same tier, same loop, same loader
hash on the wire (verified via curl). Browser caches and module
loaders are aggressive enough that hard-refresh isn't always
enough.

Adding a temporary console.log inside Module.print so when fox
opens DevTools and re-runs the throttled loop he can see (a) is
the print callback firing at all? and (b) what does Emscripten
hand us — is it actually 'tick 0' or something stranger like
'tick 0\n' or 'tick' + ' 0' as two calls?

Will revert this once the bug is resolved.
EOF
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This commit is contained in:
russell@unturf.com 2026-06-15 05:49:37 -04:00
parent 32d38754f8
commit 3cfed5e3c5
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6
wasm/c/lumbda-c.loader.js
View file

@ -30,13 +30,19 @@ async function _bootstrap() {
let outBuf = [];
let errBuf = [];
let currentOnChunk = null;
// Temporary debug — log every Module.print invocation so we can
// see exactly what Emscripten passes us (with/without trailing
// newline). Remove once the streaming-newline bug is resolved.
const DEBUG_STREAM = true;
const module = await createLumbdaC({
locateFile: (p) => wasmDir + p,
print: (line) => {
if (DEBUG_STREAM) console.log("[c-tier print]", JSON.stringify(line));
outBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},
printErr: (line) => {
if (DEBUG_STREAM) console.log("[c-tier printErr]", JSON.stringify(line));
errBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},

6
wasm/dist-repl/c/lumbda-c.loader.js
View file

@ -30,13 +30,19 @@ async function _bootstrap() {
let outBuf = [];
let errBuf = [];
let currentOnChunk = null;
// Temporary debug — log every Module.print invocation so we can
// see exactly what Emscripten passes us (with/without trailing
// newline). Remove once the streaming-newline bug is resolved.
const DEBUG_STREAM = true;
const module = await createLumbdaC({
locateFile: (p) => wasmDir + p,
print: (line) => {
if (DEBUG_STREAM) console.log("[c-tier print]", JSON.stringify(line));
outBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},
printErr: (line) => {
if (DEBUG_STREAM) console.log("[c-tier printErr]", JSON.stringify(line));
errBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},

6
www/playground/c/lumbda-c.loader.js
View file

@ -30,13 +30,19 @@ async function _bootstrap() {
let outBuf = [];
let errBuf = [];
let currentOnChunk = null;
// Temporary debug — log every Module.print invocation so we can
// see exactly what Emscripten passes us (with/without trailing
// newline). Remove once the streaming-newline bug is resolved.
const DEBUG_STREAM = true;
const module = await createLumbdaC({
locateFile: (p) => wasmDir + p,
print: (line) => {
if (DEBUG_STREAM) console.log("[c-tier print]", JSON.stringify(line));
outBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},
printErr: (line) => {
if (DEBUG_STREAM) console.log("[c-tier printErr]", JSON.stringify(line));
errBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},

6
www/repl/c/lumbda-c.loader.js
View file

@ -30,13 +30,19 @@ async function _bootstrap() {
let outBuf = [];
let errBuf = [];
let currentOnChunk = null;
// Temporary debug — log every Module.print invocation so we can
// see exactly what Emscripten passes us (with/without trailing
// newline). Remove once the streaming-newline bug is resolved.
const DEBUG_STREAM = true;
const module = await createLumbdaC({
locateFile: (p) => wasmDir + p,
print: (line) => {
if (DEBUG_STREAM) console.log("[c-tier print]", JSON.stringify(line));
outBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},
printErr: (line) => {
if (DEBUG_STREAM) console.log("[c-tier printErr]", JSON.stringify(line));
errBuf.push(line);
if (currentOnChunk) currentOnChunk(line + "\n");
},