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src: use smart pointers in cares_wrap.cc - #23813

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src: use smart pointers in cares_wrap.cc#23813
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danbev:cares_smart_pointers

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@danbev

@danbevdanbev commented Oct 22, 2018

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

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nodejs-github-bot commented Oct 22, 2018

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@danbev build started: https://ci.nodejs.org/blue/organizations/jenkins/node-test-pull-request-lite-pipeline/detail/node-test-pull-request-lite-pipeline/1332/pipeline

@nodejs-github-botnodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. cares Issues and PRs related to the c-ares dependency or the cares_wrap binding. labels Oct 22, 2018
@danbev

danbev commented Oct 22, 2018

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CI: https://ci.nodejs.org/job/node-test-pull-request/18039/

bnoordhuis
bnoordhuis approved these changes Oct 22, 2018
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Comment threadsrc/cares_wrap.cc Outdated
&hints);
if (err)
delete req_wrap;
if (!err)

@bnoordhuisbnoordhuisOct 22, 2018

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err == 0 (ditto line 2025)

@danbevdanbevOct 23, 2018

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Thanks, I'll fix this shortly.

@danbev

danbev commented Oct 23, 2018

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CI re-run: https://ci.nodejs.org/job/node-test-pull-request/18062/

addaleax
addaleax approved these changes Oct 23, 2018
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Comment threadsrc/cares_wrap.cc
refack
refack reviewed Oct 23, 2018
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Comment threadsrc/cares_wrap.cc Outdated
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Comment threadsrc/cares_wrap.cc Outdated
@refack

refack commented Oct 23, 2018

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I'm not sure this code is correct. unique_ptr has ownership semantics, it's not an RAII tool. It's not clear who owns the wraps.

From our style guide:
R.20: Use unique_ptr or shared_ptr to represent ownership

refack
refack previously requested changes Oct 23, 2018
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Please use RAII without ownership semantics

refack
refack reviewed Oct 23, 2018
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Comment threadsrc/cares_wrap.cc
@refack
refack dismissed their stale reviewOctober 23, 2018 16:11

I'm not sure...

@danbev

danbev commented Oct 29, 2018

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Please use RAII without ownership semantics

I think the code is clear as it is without using RAII, and there have been quite a few approvals for this PR. I'm happy to change if others feel the same way though.

refack
refack reviewed Oct 29, 2018
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Comment threadsrc/cares_wrap.cc Outdated
refack
refack reviewed Oct 29, 2018
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refack
refack reviewed Oct 29, 2018
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@refack

refack commented Oct 29, 2018

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Please use RAII without ownership semantics

I think the code is clear as it is without using RAII, and there have been quite a few approvals for this PR. I'm happy to change if others feel the same way though.

IIUC you are using unique_ptr for RAII. IMHO it's not the best pattern, but AFAICT it is the best we have implemented in our code ATM. So I withdrew my objections.

Since our style guide states:
R.30: Take smart pointers as parameters only to explicitly express lifetime semantics
R.20: Use unique_ptr or shared_ptr to represent ownership
All I ask is for clarifying comments, about why that guideline is broken.

@danbev

danbev commented Oct 30, 2018

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Updated CI: https://ci.nodejs.org/job/node-test-pull-request/18224/

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danbev commented Nov 2, 2018

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Landed in 226a41a.

@danbevdanbev closed this Nov 2, 2018
@danbev
danbev deleted the cares_smart_pointers branch November 2, 2018 09:54
danbev added a commit that referenced this pull request Nov 2, 2018
@danbev
src: use smart pointers in cares_wrap.cc
226a41a
PR-URL: #23813
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
targos pushed a commit that referenced this pull request Nov 18, 2018
@danbev@targos
src: use smart pointers in cares_wrap.cc
b297abb
PR-URL: #23813
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
rvagg pushed a commit that referenced this pull request Nov 28, 2018
@danbev@rvagg
src: use smart pointers in cares_wrap.cc
ea862ac
PR-URL: #23813
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
@BridgeARBridgeAR mentioned this pull request Dec 5, 2018
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This was referenced Dec 7, 2018
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codebytere pushed a commit that referenced this pull request Jan 13, 2019
@danbev@codebytere
src: use smart pointers in cares_wrap.cc
4ae7327
PR-URL: #23813
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
@codebyterecodebytere mentioned this pull request Jan 15, 2019
Merged
codebytere pushed a commit that referenced this pull request Jan 29, 2019
@danbev@codebytere
src: use smart pointers in cares_wrap.cc
be14283
PR-URL: #23813
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
This was referenced Jan 29, 2019
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@bnoordhuisbnoordhuisbnoordhuis approved these changes
@jasnelljasnelljasnell approved these changes
@addaleaxaddaleaxaddaleax approved these changes
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@refackrefackrefack approved these changes
@mihalskiymihalskiymihalskiy approved these changes
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