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tickprocessor: pass proper arguments to /bin/sh #8480

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tickprocessor: pass proper arguments to /bin/sh #8480

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36 changes: 32 additions & 4 deletions lib/internal/v8_prof_polyfill.js
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Expand Up @@ -38,11 +38,12 @@ const os = {
/^[0-9a-f]+-[0-9a-f]+$/.test(arg)) {
return '';
}
} else if (process.platform === 'darwin') {
args.unshift('-c', name);
name = '/bin/sh';
}
return cp.spawnSync(name, args).stdout.toString();
let out = cp.spawnSync(name, args).stdout.toString();
// Auto c++filt names, but not [iItT]
if (process.platform === 'darwin' && name === 'nm')
out = macCppfiltNm(out);
return out;
}
};
const print = console.log;
Expand Down Expand Up @@ -100,3 +101,30 @@ function versionCheck() {
}
}
}

function macCppfiltNm(out) {
// Re-grouped copy-paste from `tickprocessor.js`
const FUNC_RE = /^([0-9a-fA-F]{8,16} [iItT] )(.*)$/gm;
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Not a comment, just a note: this matches any hex digit string >= 8 && <= 16 characters long, not just strings of size 8 or 16. Ditto below.

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It is a copy-paste from V8, but I agree with you. It doesn't matter that much in the end, though.

let entries = out.match(FUNC_RE);
if (entries === null)
return out;

entries = entries.map((entry) => {
return entry.replace(/^[0-9a-fA-F]{8,16} [iItT] /, '')
});

let filtered;
try {
filtered = cp.spawnSync('c++filt', [ '-p' , '-i' ], {
input: entries.join('\n')
}).stdout.toString();
} catch (e) {
return out;
}

let i = 0;
filtered = filtered.split(/\n/g);
return out.replace(FUNC_RE, (all, prefix, postfix) => {
return prefix + (filtered[i++] || postfix);
});
}
3 changes: 1 addition & 2 deletions lib/internal/v8_prof_processor.js
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Expand Up @@ -20,8 +20,7 @@ scriptFiles.forEach(function(s) {

var tickArguments = [];
if (process.platform === 'darwin') {
const nm = 'foo() { nm "$@" | (c++filt -p -i || cat) }; foo $@';
tickArguments.push('--mac', '--nm=' + nm);
tickArguments.push('--mac');
} else if (process.platform === 'win32') {
tickArguments.push('--windows');
}
Expand Down
8 changes: 8 additions & 0 deletions test/parallel/test-tick-processor.js
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Expand Up @@ -43,6 +43,14 @@ runTest(/RunInDebugContext/,
setTimeout(function() { process.exit(0); }, 2000);
f();`);

runTest(/Builtin_DateNow/,
`function f() {
this.ts = Date.now();
setImmediate(function() { new f(); });
};
setTimeout(function() { process.exit(0); }, 2000);
f();`);

function runTest(pattern, code) {
cp.execFileSync(process.execPath, ['-prof', '-pe', code]);
var matches = fs.readdirSync(common.tmpDir);
Expand Down