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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.
nodejs-github-bot
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Oct 3, 2020
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addaleax
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Oct 3, 2020
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I’d be open to fast-tracking so that #35093 can rebase against this |
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Oct 3, 2020
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jasnell
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Oct 3, 2020
cjihrig
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Oct 3, 2020
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Oct 3, 2020
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addaleax added a commit
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Oct 3, 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 <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
addaleax
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Oct 3, 2020
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Landed in f5c7aa0 |
addaleax added a commit
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Oct 3, 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: nodejs#35488 Refs: nodejs#35487 Refs: nodejs#35481
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danielleadams pushed a commit
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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 <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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addaleax added a commit
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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 <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
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MylesBorins pushed a commit
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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 <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
MylesBorins pushed a commit
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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 <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
joesepi pushed a commit
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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 <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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 <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
addaleax added a commit
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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 <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
targos pushed a commit
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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 <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
targos pushed a commit
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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 <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
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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