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buffer: remove Uint8Array check #11324

Merged
merged 1 commit into from
Feb 16, 2017
Merged

buffer: remove Uint8Array check #11324

merged 1 commit into from
Feb 16, 2017

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seishun
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@seishun seishun commented Feb 12, 2017 •
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This makes write[U]Int* operations on Buffer with noAssert=false about 3 times faster.

See #11245 (comment) for background and benchmark results.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines
Affected core subsystem(s)

buffer

@nodejs-github-bot nodejs-github-bot added the buffer Issues and PRs related to the buffer subsystem. label Feb 12, 2017
@seishun seishun changed the title buffer: remove Uit8Array check buffer: remove UInt8Array check Feb 12, 2017
@seishun seishun changed the title buffer: remove UInt8Array check buffer: remove Uint8Array check Feb 12, 2017
@seishun
buffer: remove Uint8Array check
603e2c8 
This makes write[U]Int* operations on Buffer with `noAssert=false` about 3
times faster.

Refs: #11245
@thefourtheye
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This would be a major change, as it changes the error message.

@seishun
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seishun commented Feb 12, 2017

@thefourtheye It removes the error message. I don't think this should be semver-major, it's semver-minor at most. I find it hard to imagine code that relies on this exception.

joyeecheung
joyeecheung reviewed Feb 12, 2017
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lib/buffer.js
@@ -1056,8 +1056,6 @@ Buffer.prototype.readDoubleBE = function readDoubleBE(offset, noAssert) {


function checkInt(buffer, value, offset, ext, max, min) {
if (!isUint8Array(buffer))
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If buffer is no longer checked we can just pass buffer.length down. Not sure about the performance implication though.

@jasnell
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jasnell commented Feb 12, 2017

There have been cases in the past where removal of an error has caused things to break. I'm going to agree with semver-major on this but we can see how the rest of @nodejs/ctc feels.

jasnell
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The change itself LGTM but I'd like discussion about the semver-iness of this before it lands.

@addaleax
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I don’t think any usage that would have triggered the error can reasonably be considered part of our API, so I don’t think this a change that needs a semver label.

@seishun
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seishun commented Feb 12, 2017

There have been cases in the past where removal of an error has caused things to break.

Could you describe some of them in more detail?

@jasnell
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jasnell commented Feb 12, 2017

@seishun ... one in particular that is not related to this module is glob, which uses an error thrown by fs.realpath() to determine when to exit. I believe @addaleax is correct in that general usage should not trigger this so semver-patch may be just fine, we just need to be sure.

@thefourtheye
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Just to be sure, we can have a CITGM run.

@seishun
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seishun commented Feb 13, 2017

@thefourtheye Could you run it? Last time I tried it, everything broke.

@thefourtheye
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@seishun Started. https://ci.nodejs.org/view/Node.js-citgm/job/citgm-smoker/573/. I hasn't succeeded in the recent past. Let's see.

trevnorris
trevnorris approved these changes Feb 15, 2017
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Personally I don't think this needs to be semver-major.

@seishun seishun merged commit 00c86cc into nodejs:master Feb 16, 2017
@gibfahn
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gibfahn commented Feb 16, 2017

@nodejs/citgm this citgm run crashed and burned, do we know what's going on here?

@MylesBorins
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@seishun why was this landed with so many failures on citgm that had not yet been reviewed?

@seishun seishun mentioned this pull request Feb 23, 2017
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@italoacasas
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@MylesBorins do you have the time to review the failures in CITGM?

@mscdex
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mscdex commented Feb 26, 2017

CITGM again since the previous link is dead already: https://ci.nodejs.org/view/Node.js-citgm/job/citgm-smoker/603/

@italoacasas
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italoacasas commented Feb 28, 2017 •
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A lot of red in CITGM, the error in expressjs seems the root issue.

Uncaught TypeError: The "digest" argument is required and must not be undefined

cc: @mscdex @MylesBorins

@mscdex
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mscdex commented Feb 28, 2017

@italoacasas See: expressjs/express#3207

@evanlucas
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This isn't cherry-picking cleanly to v7.x-staging. Want to backport?

@jasnell jasnell mentioned this pull request Apr 4, 2017
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@gibfahn gibfahn mentioned this pull request Jun 15, 2017
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gibfahn commented Jun 17, 2017

Should this be backported to LTS? If yes please follow the guide and raise a backport PR, if no let me know or add the dont-land-on label.

@seishun seishun deleted the remove-uint8array-check branch June 17, 2017 20:22
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@joyeecheung joyeecheung joyeecheung approved these changes

@trevnorris trevnorris trevnorris approved these changes

@jasnell jasnell jasnell approved these changes

@addaleax addaleax addaleax approved these changes

@targos targos targos approved these changes

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