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fs: replace a bind() with a top-level function #13474

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@mcollina mcollina commented Jun 5, 2017

#11225 introduce an unnecessary
bind() when closing a stream. This PR replaces that bind() with a
top-level function.

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

fs

edit: updated according to @refack suggestion.

@mcollina mcollina requested a review from mscdex June 5, 2017 14:48
@nodejs-github-bot nodejs-github-bot added the fs Issues and PRs related to the fs subsystem / file system. label Jun 5, 2017
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mcollina commented Jun 5, 2017

cc @mscdex

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So it's not a "useless" bind (it was a Currying null). I'd say you just replaced it with something better.

lib/fs.js Outdated
@@ -2034,6 +2034,11 @@ ReadStream.prototype.close = function(cb) {
this.fd = null;
};

// needed because as it will be called with arguments
// that does not match this.close() signature
function closeOnOpen() {
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Maybe we can make it more evident by adding an fd parameter here? Plus I'm sure V8 would prefer it.

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updated.

lib/fs.js Outdated
// needed because as it will be called with arguments
// that does not match this.close() signature
function closeOnOpen() {
this.close();
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Will this be correct here?

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yes, that's the exact meaning. this  will be the stream object. I'll add a comment to note that.

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EventEmitter instances always call their event handlers within the context of the EventEmitter. I'm not sure we need to explicitly document that in this one particular place when we do this same thing throughout core.

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I agree with @mscdex. I looked at the code too quickly earlier.

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mcollina commented Jun 6, 2017

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mscdex commented Jun 6, 2017

LGTM

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mcollina commented Jun 7, 2017

@refack I've amended the commit message, check if it is ok and I'll merge.

@mcollina mcollina changed the title fs: remove useless bind() fs: replace a bind() with a top-level function Jun 7, 2017
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✔️

nodejs#11225 introduce an unnecessary
bind() when closing a stream. This PR replaces that bind() with a
top-level function.

PR-URL: nodejs#13474
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Evan Lucas <evanlucas@me.com>
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mcollina commented Jun 7, 2017

Landed as 07ca288.

@mcollina mcollina closed this Jun 7, 2017
@mcollina mcollina deleted the remove-bind branch June 7, 2017 12:04
mcollina added a commit to mcollina/node that referenced this pull request Jun 7, 2017
nodejs#11225 introduce an unnecessary
bind() when closing a stream. This PR replaces that bind() with a
top-level function.

PR-URL: nodejs#13474
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Evan Lucas <evanlucas@me.com>
jasnell pushed a commit that referenced this pull request Jun 7, 2017
#11225 introduce an unnecessary
bind() when closing a stream. This PR replaces that bind() with a
top-level function.

PR-URL: #13474
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Evan Lucas <evanlucas@me.com>
@gibfahn gibfahn mentioned this pull request Jun 15, 2017
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This does not land cleanly in LTS. Please feel free to manually backport. Please also feel free to replace the backport request label with do-not-land if it shouldn't land

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9 participants