tools: fix prof polyfill readline by killagu · Pull Request #18641 · nodejs/node

killagu · 2018-02-08T13:04:11Z

node --prof foo.js may not print the full profile log file,
the last line will broken like tick, and not more blank line.
readlinewill stuck in infinite loop, add bytes < buf.length
will fix it.

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
documentation is changed or added
commit message follows commit guidelines

Affected core subsystem(s)

@bnoordhuis

killagu · 2018-02-08T13:09:50Z

node v9.4.0 and v9.5.0 may not print the full profile log file when use the ctrl-c close the process.

mmarchini · 2018-02-08T23:16:11Z

typo s/BORKEN_PART/BROKEN_PART/
Also, could we just use const BROKEN_PART = 'tick,'/ instead? "0x100840650" looks like a magic number here.

yes,it's better.

killagu · 2018-02-09T01:11:33Z

@mmarchini the magic number have been removed.

Fishrock123 · 2018-02-10T17:08:00Z

CI: https://ci.nodejs.org/job/node-test-pull-request/13082/

Fishrock123 · 2018-02-10T17:08:40Z

I'm not sure whether the linter (make lint) will complain or not, but this is difficult to read. Please use braces here.

XadillaX · 2018-02-11T03:02:31Z

emit a warning while broken?

`node --prof foo.js` may not print the full profile log file, the last line will broken like `tick,` and not more blank line. `readline`will stuck in infinite loop, add `bytes === 0` will fix it.

XadillaX

LGTM if CI is OK.

XadillaX · 2018-02-11T03:53:14Z

New CI: https://ci.nodejs.org/job/node-test-pull-request/13101/

XadillaX · 2018-02-11T04:06:30Z

New CI: https://ci.nodejs.org/job/node-test-pull-request/13102/

XadillaX · 2018-02-11T09:22:02Z

 exports.restoreStdout = restoreWritable.bind(null, 'stdout');
 exports.restoreStderr = restoreWritable.bind(null, 'stderr');
+exports.isSymbolAvailable = exports.isWindows ||
+ exports.isSunOS ||


nit: align with exports above.

@XadillaX as you wish.

cjihrig · 2018-02-11T20:03:26Z


 Platform check for Windows 32-bit on Windows 64-bit.

+### isSymbolAvailable


Can we use a more descriptive name than this please?

my bad,it should be isCPPSymbolsNotMapped. @cjihrig

cjihrig · 2018-02-11T20:04:13Z

+### isSymbolAvailable
+* [&lt;Boolean>]
+
+Platform check for if symbol available.


Similarly, can you provide a more in depth description.

killagu · 2018-02-12T01:16:40Z

@cjihrig the property name,and readme have been changed to more descriptive.

XadillaX · 2018-02-12T02:14:48Z

 * [&lt;Boolean>]

-Platform check for if symbol available.
+Platform check for c++ symbols are mapped or not.


c++ => C++

mmarchini

CI: https://ci.nodejs.org/job/node-test-pull-request/13149/

BridgeAR · 2018-02-16T21:28:34Z

+tmpdir.refresh();
+
+if (!common.enoughTestCpu)
+ common.skip('test is CPU-intensive');


Nit: would you be so kind and use a capital letter as first character? :-)

In the node test,the first character in skip message is always lower case.

BridgeAR · 2018-02-16T21:29:11Z

+ common.skip('test is CPU-intensive');
+
+if (common.isCPPSymbolsNotMapped) {
+ common.skip('C++ symbols are not mapped for this os.');


Nit: Operating system should be upper cased as in OS.

Thank you for the advice.It should be upper cased.

BridgeAR · 2018-02-16T21:29:54Z

+
+//This test will produce a broken profile log.
+//ensure prof-polyfill not stuck in infinite loop
+//and success process


Nit: please use a space at the beginning of each line in a comment.

Thank you for the advice.It should have a space at the beginning of each line.

BridgeAR · 2018-02-16T21:46:07Z

+ this.ts = Date.now();
+ setImmediate(function() { new f(); });
+ };
+ f();`;


Nit: we have the unwritten rule not to use multi line template strings.

Thank you for the advice.I will split it to two lines.

BridgeAR · 2018-02-16T21:46:43Z

+ '--prof-process', LOG_FILE
+ ]);
+ assert(WARN_REG_EXP.test(child.stderr.toString()));
+ assert.strictEqual(child.status, 0, 'broken file should success too');


I personally would like to stick to the default message.

The default message will be removed.

BridgeAR · 2018-02-16T21:50:13Z

 return '';
 }
+ if (bytes === 0) {
+ process.emitWarning('profile file is broken', {


Suggestion: you might just add the filename of the broken file? And please use a capital letter as first character.

Thank you for the advice.Add the filename is better.

fix warn message fix comment style

killagu · 2018-02-17T00:49:39Z

@BridgeAR Thank you for the advice.I have update the code.Please review it.

BridgeAR · 2018-02-17T01:19:32Z

CI https://ci.nodejs.org/job/node-test-pull-request/13231/

`node --prof foo.js` may not print the full profile log file, leaving the last line broken (for example `tick,`. When that happens, `readline` will be stuck in an infinite loop. This patch fixes it. Also introduced `common.isCPPSymbolsNotMapped` to avoid duplicated code on tick-processor tests. PR-URL: #18641 Reviewed-By: Khaidi Chu <i@2333.moe> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

mmarchini · 2018-02-17T12:09:25Z

Landed in 38f04d4 😄

MylesBorins · 2018-02-21T15:11:13Z

Should this be backported to v9.x-staging? If yes please follow the guide and raise a backport PR, if not let me know or add the dont-land-on label.

killagu · 2018-02-21T15:33:38Z

@MylesBorins It should be backported to v9.x-staging,and I will raise a backport PR.

`node --prof foo.js` may not print the full profile log file, leaving the last line broken (for example `tick,`. When that happens, `readline` will be stuck in an infinite loop. This patch fixes it. Also introduced `common.isCPPSymbolsNotMapped` to avoid duplicated code on tick-processor tests. PR-URL: nodejs#18641 Reviewed-By: Khaidi Chu <i@2333.moe> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

killagu · 2018-02-21T16:26:22Z

@MylesBorins I have raised a PR to backport it.

BTW I have no permission for run the CI. If you can help me trigger the CI, you are so kind.

`node --prof foo.js` may not print the full profile log file, leaving the last line broken (for example `tick,`. When that happens, `readline` will be stuck in an infinite loop. This patch fixes it. Also introduced `common.isCPPSymbolsNotMapped` to avoid duplicated code on tick-processor tests. PR-URL: nodejs#18641 Reviewed-By: Khaidi Chu <i@2333.moe> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

`node --prof foo.js` may not print the full profile log file, leaving the last line broken (for example `tick,`. When that happens, `readline` will be stuck in an infinite loop. This patch fixes it. Also introduced `common.isCPPSymbolsNotMapped` to avoid duplicated code on tick-processor tests. Backport-PR-URL: #18901 PR-URL: #18641 Reviewed-By: Khaidi Chu <i@2333.moe> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

`node --prof foo.js` may not print the full profile log file, leaving the last line broken (for example `tick,`. When that happens, `readline` will be stuck in an infinite loop. This patch fixes it. Also introduced `common.isCPPSymbolsNotMapped` to avoid duplicated code on tick-processor tests. PR-URL: nodejs#18641 Reviewed-By: Khaidi Chu <i@2333.moe> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

`node --prof foo.js` may not print the full profile log file, leaving the last line broken (for example `tick,`. When that happens, `readline` will be stuck in an infinite loop. This patch fixes it. Also introduced `common.isCPPSymbolsNotMapped` to avoid duplicated code on tick-processor tests. Backport-PR-URL: #18901 PR-URL: #18641 Reviewed-By: Khaidi Chu <i@2333.moe> Reviewed-By: Matheus Marchini <matheus@sthima.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

nodejs-github-bot added the tools Issues and PRs related to the tools directory. label Feb 8, 2018

mmarchini reviewed Feb 8, 2018
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killagu force-pushed the fix-prof-polyfill branch from 7b4e27c to bfaee12Compare February 9, 2018 01:10

Fishrock123 reviewed Feb 10, 2018
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killagu force-pushed the fix-prof-polyfill branch 2 times, most recently from 479f168 to fd9baf5Compare February 11, 2018 02:33

XadillaX reviewed Feb 11, 2018
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Comment threadlib/internal/v8_prof_polyfill.js Outdated
XadillaXFeb 11, 2018
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emit a warning while broken?

killagu force-pushed the fix-prof-polyfill branch from 9b54b62 to 41f92a4Compare February 11, 2018 03:47

tools: fix prof polyfill readline
33f4a51
`node --prof foo.js` may not print the full profile log file, the last line will broken like `tick,` and not more blank line. `readline`will stuck in infinite loop, add `bytes === 0` will fix it.

killagu force-pushed the fix-prof-polyfill branch from 41f92a4 to 33f4a51Compare February 11, 2018 03:50

XadillaX approved these changes Feb 11, 2018
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test: add common.isSymbolAvailable
45730d5

XadillaX reviewed Feb 11, 2018
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fix: fix code style
2610183

cjihrig reviewed Feb 11, 2018
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mv common.isSymbolAvailable -> common.isCPPSymbolsNotMapped
05b0391

XadillaX reviewed Feb 12, 2018
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fix c++ -> C++
3684bc0

mmarchini approved these changes Feb 13, 2018
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BridgeAR reviewed Feb 16, 2018
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fix code style
a43951e
fix warn message fix comment style

BridgeAR approved these changes Feb 17, 2018
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BridgeAR added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Feb 17, 2018

mmarchini closed this Feb 17, 2018

MylesBorins added the backport-requested-v9.x label Feb 21, 2018

killagu mentioned this pull request Feb 21, 2018
[v9.x backport] tools, test: fix prof polyfill readline #18900
Closed
4 tasks

killagu mentioned this pull request Feb 21, 2018
[v9.x backport] tools, test: fix prof polyfill readline #18901
Closed
2 tasks

addaleax added backported-to-v9.x and removed backport-requested-v9.x labels Feb 26, 2018

addaleax mentioned this pull request Feb 27, 2018
v9.7.0 proposal #19040
Closed

MylesBorins added the land-on-v8.x label Aug 7, 2018

MylesBorins mentioned this pull request Aug 16, 2018
v8.12.0 proposal #21593
Merged


		Platform check for Windows 32-bit on Windows 64-bit.

		### isSymbolAvailable

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Checklist

Affected core subsystem(s)

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killagu commented Feb 12, 2018

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killagu commented Feb 17, 2018

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