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Revert "handle_wrap: IsRefed -> Unrefed, no isAlive check" #6382

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Fishrock123
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original PR: #6204

subsystem: OOPS

this may be necessary... looks like getting the flags isn't possible if the flag isn't alive because that's literally a nullptr check..

static inline bool IsAlive(const HandleWrap* wrap) {
  return wrap != nullptr && wrap->GetHandle() != nullptr;
}

cc @trevnorris I guess

@nodejs-github-bot nodejs-github-bot added the c++ Issues and PRs that require attention from people who are familiar with C++. label Apr 26, 2016
@Fishrock123 Fishrock123 added this to the 6.0.0 milestone Apr 26, 2016
@Fishrock123 Fishrock123 mentioned this pull request Apr 26, 2016
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jasnell commented Apr 26, 2016

Were there two that needed to be reverted? Or does this PR revert both?

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No, this reverts only one.

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@jasnell I'd like to leave time for @trevnorris to investigate, since he originally thought the patch would be ok.

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jasnell commented Apr 26, 2016

yep. we've got time. I'll be rebasing several times off master and will be looking to cut the actual release tomorrow morning around 10:00am pacific.

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jasnell commented Apr 26, 2016

@Fishrock123 @trevnorris .. what is the status on this and the other one that would need to be reverted?

@Fishrock123 Fishrock123 deleted the revert-9bb5a5e branch April 26, 2016 16:06
Fishrock123 added a commit to Fishrock123/node that referenced this pull request Apr 26, 2016
Fishrock123 added a commit to Fishrock123/node that referenced this pull request Apr 26, 2016
Fishrock123 added a commit to Fishrock123/node that referenced this pull request Apr 26, 2016
Fishrock123 added a commit to Fishrock123/node that referenced this pull request May 3, 2016
This reverts commit 9bb5a5e.

Refs: nodejs#6395
Refs: nodejs#6204
Refs: nodejs#6401
Refs: nodejs#6382
Fixes: nodejs#6381

Conflicts:
	src/handle_wrap.cc
	test/parallel/test-handle-wrap-isrefed-tty.js
	test/parallel/test-handle-wrap-isrefed.js
Fishrock123 added a commit to Fishrock123/node that referenced this pull request May 11, 2016
This reverts commit 9bb5a5e.

This API is not suitable because it depended on being able to
potentially access the handle's flag after the handle was already
cleaned up. Since this is not actually possible (obviously, oops)
this newer API no longer makes much sense, and the older API is more
suitable.

API comparison:
IsRefed -> Has a strong reference AND is alive. (Deterministic)
Unrefed -> Has a weak reference OR is dead. (Less deterministic)

Refs: nodejs#6395
Refs: nodejs#6204
Refs: nodejs#6401
Refs: nodejs#6382
Fixes: nodejs#6381

PR-URL: nodejs#6546
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Trevor Norris <[email protected]>

Conflicts:
	src/handle_wrap.cc
	test/parallel/test-handle-wrap-isrefed-tty.js
	test/parallel/test-handle-wrap-isrefed.js
Fishrock123 added a commit to Fishrock123/node that referenced this pull request May 11, 2016
Rename slightly to HasRef() at bnoordhuis’ request.
Better reflects what we actually do for this check.

Refs: nodejs#6395
Refs: nodejs#6204
Refs: nodejs#6401
Refs: nodejs#6382
Refs: nodejs#6381

PR-URL: nodejs#6546
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Trevor Norris <[email protected]>
evanlucas pushed a commit that referenced this pull request May 17, 2016
This reverts commit 9bb5a5e.

This API is not suitable because it depended on being able to
potentially access the handle's flag after the handle was already
cleaned up. Since this is not actually possible (obviously, oops)
this newer API no longer makes much sense, and the older API is more
suitable.

API comparison:
IsRefed -> Has a strong reference AND is alive. (Deterministic)
Unrefed -> Has a weak reference OR is dead. (Less deterministic)

Refs: #6395
Refs: #6204
Refs: #6401
Refs: #6382
Fixes: #6381

PR-URL: #6546
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Trevor Norris <[email protected]>

Conflicts:
	src/handle_wrap.cc
	test/parallel/test-handle-wrap-isrefed-tty.js
	test/parallel/test-handle-wrap-isrefed.js
evanlucas pushed a commit that referenced this pull request May 17, 2016
Rename slightly to HasRef() at bnoordhuis’ request.
Better reflects what we actually do for this check.

Refs: #6395
Refs: #6204
Refs: #6401
Refs: #6382
Refs: #6381

PR-URL: #6546
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Trevor Norris <[email protected]>
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3 participants