crypto: fix KeyObject garbage collection #35481
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These objects don’t hold any resources on the event loop, so they should be weak objects that can be garbage collected when nothing refers to them anymore.
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I’d be open to fast-tracking so that #35093 can rebase against this |
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These objects don’t hold any resources on the event loop, so they should be weak objects that can be garbage collected when nothing refers to them anymore. PR-URL: #35481 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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When a process exits cleanly, i.e. because the event loop ends up
without things to wait for, the Node.js objects that are left on
the heap should be:
1. weak, i.e. ready for garbage collection once no longer
referenced, or
2. detached, i.e. scheduled for destruction once no longer
referenced, or
3. an unrefed libuv handle, i.e. does not keep the event loop
alive, or
4. an inactive libuv handle (essentially the same here)
There are a few exceptions to this rule, but generally,
if there are C++-backed Node.js objects on the heap
that do not fall into the above categories, we may be looking
at a potential memory leak. Most likely, the cause is a missing
`MakeWeak()` call on the corresponding object.
In order to avoid this kind of problem, we check the list
of BaseObjects for these criteria. In this commit, we only do so
when explicitly instructed to or when in debug mode
(where --verify-base-objects is always-on).
In particular, this avoids the kinds of memory leak issues
that were fixed in the PRs referenced below.
Refs: nodejs#35488
Refs: nodejs#35487
Refs: nodejs#35481
2 tasks
danielleadams
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Oct 6, 2020
These objects don’t hold any resources on the event loop, so they should be weak objects that can be garbage collected when nothing refers to them anymore. PR-URL: #35481 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
Merged
addaleax
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Oct 7, 2020
When a process exits cleanly, i.e. because the event loop ends up
without things to wait for, the Node.js objects that are left on
the heap should be:
1. weak, i.e. ready for garbage collection once no longer
referenced, or
2. detached, i.e. scheduled for destruction once no longer
referenced, or
3. an unrefed libuv handle, i.e. does not keep the event loop
alive, or
4. an inactive libuv handle (essentially the same here)
There are a few exceptions to this rule, but generally,
if there are C++-backed Node.js objects on the heap
that do not fall into the above categories, we may be looking
at a potential memory leak. Most likely, the cause is a missing
`MakeWeak()` call on the corresponding object.
In order to avoid this kind of problem, we check the list
of BaseObjects for these criteria. In this commit, we only do so
when explicitly instructed to or when in debug mode
(where --verify-base-objects is always-on).
In particular, this avoids the kinds of memory leak issues
that were fixed in the PRs referenced below.
Refs: #35488
Refs: #35487
Refs: #35481
PR-URL: #35490
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
4 tasks
Merged
MylesBorins
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Nov 16, 2020
These objects don’t hold any resources on the event loop, so they should be weak objects that can be garbage collected when nothing refers to them anymore. PR-URL: #35481 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
MylesBorins
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Nov 16, 2020
These objects don’t hold any resources on the event loop, so they should be weak objects that can be garbage collected when nothing refers to them anymore. PR-URL: #35481 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
joesepi
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Jan 8, 2021
These objects don’t hold any resources on the event loop, so they should be weak objects that can be garbage collected when nothing refers to them anymore. PR-URL: nodejs#35481 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
joesepi
pushed a commit
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Jan 8, 2021
When a process exits cleanly, i.e. because the event loop ends up
without things to wait for, the Node.js objects that are left on
the heap should be:
1. weak, i.e. ready for garbage collection once no longer
referenced, or
2. detached, i.e. scheduled for destruction once no longer
referenced, or
3. an unrefed libuv handle, i.e. does not keep the event loop
alive, or
4. an inactive libuv handle (essentially the same here)
There are a few exceptions to this rule, but generally,
if there are C++-backed Node.js objects on the heap
that do not fall into the above categories, we may be looking
at a potential memory leak. Most likely, the cause is a missing
`MakeWeak()` call on the corresponding object.
In order to avoid this kind of problem, we check the list
of BaseObjects for these criteria. In this commit, we only do so
when explicitly instructed to or when in debug mode
(where --verify-base-objects is always-on).
In particular, this avoids the kinds of memory leak issues
that were fixed in the PRs referenced below.
Refs: nodejs#35488
Refs: nodejs#35487
Refs: nodejs#35481
PR-URL: nodejs#35490
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
addaleax
added a commit
to addaleax/node
that referenced
this pull request
May 23, 2021
When a process exits cleanly, i.e. because the event loop ends up
without things to wait for, the Node.js objects that are left on
the heap should be:
1. weak, i.e. ready for garbage collection once no longer
referenced, or
2. detached, i.e. scheduled for destruction once no longer
referenced, or
3. an unrefed libuv handle, i.e. does not keep the event loop
alive, or
4. an inactive libuv handle (essentially the same here)
There are a few exceptions to this rule, but generally,
if there are C++-backed Node.js objects on the heap
that do not fall into the above categories, we may be looking
at a potential memory leak. Most likely, the cause is a missing
`MakeWeak()` call on the corresponding object.
In order to avoid this kind of problem, we check the list
of BaseObjects for these criteria. In this commit, we only do so
when explicitly instructed to or when in debug mode
(where --verify-base-objects is always-on).
In particular, this avoids the kinds of memory leak issues
that were fixed in the PRs referenced below.
Refs: nodejs#35488
Refs: nodejs#35487
Refs: nodejs#35481
PR-URL: nodejs#35490
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
targos
pushed a commit
that referenced
this pull request
May 25, 2021
When a process exits cleanly, i.e. because the event loop ends up
without things to wait for, the Node.js objects that are left on
the heap should be:
1. weak, i.e. ready for garbage collection once no longer
referenced, or
2. detached, i.e. scheduled for destruction once no longer
referenced, or
3. an unrefed libuv handle, i.e. does not keep the event loop
alive, or
4. an inactive libuv handle (essentially the same here)
There are a few exceptions to this rule, but generally,
if there are C++-backed Node.js objects on the heap
that do not fall into the above categories, we may be looking
at a potential memory leak. Most likely, the cause is a missing
`MakeWeak()` call on the corresponding object.
In order to avoid this kind of problem, we check the list
of BaseObjects for these criteria. In this commit, we only do so
when explicitly instructed to or when in debug mode
(where --verify-base-objects is always-on).
In particular, this avoids the kinds of memory leak issues
that were fixed in the PRs referenced below.
Refs: #35488
Refs: #35487
Refs: #35481
PR-URL: #35490
Backport-PR-URL: #38786
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
targos
pushed a commit
that referenced
this pull request
Jun 11, 2021
When a process exits cleanly, i.e. because the event loop ends up
without things to wait for, the Node.js objects that are left on
the heap should be:
1. weak, i.e. ready for garbage collection once no longer
referenced, or
2. detached, i.e. scheduled for destruction once no longer
referenced, or
3. an unrefed libuv handle, i.e. does not keep the event loop
alive, or
4. an inactive libuv handle (essentially the same here)
There are a few exceptions to this rule, but generally,
if there are C++-backed Node.js objects on the heap
that do not fall into the above categories, we may be looking
at a potential memory leak. Most likely, the cause is a missing
`MakeWeak()` call on the corresponding object.
In order to avoid this kind of problem, we check the list
of BaseObjects for these criteria. In this commit, we only do so
when explicitly instructed to or when in debug mode
(where --verify-base-objects is always-on).
In particular, this avoids the kinds of memory leak issues
that were fixed in the PRs referenced below.
Refs: #35488
Refs: #35487
Refs: #35481
PR-URL: #35490
Backport-PR-URL: #38786
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
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These objects don’t hold any resources on the event loop, so they
should be weak objects that can be garbage collected when nothing
refers to them anymore.
Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passes