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Profile: fix order of fields in heapsnapshot & improve formatting #55890

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IanButterworth
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Fixes #54414

The order of the fields in the json object is critical for dev tools. It seems their JSON parser doesn't just load the whole json object in then process it, but does some processing on the fly.

With this the snapshot loads in vscode and dev tools

The order of the fields in the json object is critical for dev tools. It seems their JSON parser doesn't just load the whole json object in then process it, but does some processing on the fly.

With this the snapshot loads in vscode and dev tools
@IanButterworth IanButterworth added backport 1.10 Change should be backported to the 1.10 release backport 1.11 Change should be backported to release-1.11 labels Sep 26, 2024
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I've marked this for 1.10 backport but I think some work is needed for that. Quoting myself #54416 (comment)

To get the heapsnapshot fixes in I think these are all needed

Which I tried but they're not very clean backports. I think someone familiar with GC would be better suited to handle them.

@nsajko nsajko added bugfix This change fixes an existing bug profiler labels Sep 26, 2024
@IanButterworth IanButterworth merged commit 32b9e1a into JuliaLang:master Sep 27, 2024
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KristofferC pushed a commit that referenced this pull request Sep 30, 2024
@KristofferC KristofferC mentioned this pull request Sep 30, 2024
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KristofferC added a commit that referenced this pull request Oct 1, 2024
Backported PRs:
- [x] #55849 <!-- Mmap: fix grow! for non file IOs -->
- [x] #55863 <!-- Update TaskLocalRNG docstring according to #49110 -->
- [x] #54433 <!-- Root globals in toplevel exprs -->
- [x] #55828 <!-- Fix some corner cases of `isapprox` with unsigned
integers -->
- [x] #55890 <!-- Profile: fix order of fields in heapsnapshot & improve
formatting -->
- [x] #55884 <!-- inference: add missing `TypeVar` handling for
`instanceof_tfunc` -->
- [x] #55881 <!-- Install terminfo data under /usr/share/julia -->
- [x] #55909 <!-- do not intentionally suppress errors in precompile
script from being reported or failing the result -->
- [x] #55355 <!-- relocation: account for trailing path separator in
depot paths -->
- [x] #55917 <!-- fix rawbigints OOB issues -->
- [x] #55892 <!-- TOML: Avoid type-pirating `Base.TOML.Parser` -->
- [x] #55798 <!-- Broadcast binary ops involving strided triangular -->
- [x] #55919 <!-- Limit `@inbounds` to indexing in the dual-iterator
branch in `copyto_unaliased!` -->

Contains multiple commits, manual intervention needed:
- [ ] #54009 <!-- allow extensions to trigger from packages in [deps]
-->
- [ ] #55509 <!-- Fix cong implementation to be properly random and not
just cycling. -->
- [ ] #55569 <!-- Add a docs section about loading/precomp/ttfx time
tuning -->
- [ ] #55824 <!-- Replace regex package module checks with actual code
checks -->

Non-merged PRs with backport label:
- [ ] #55932 <!-- REPL: make UndefVarError aware of imported modules -->
- [ ] #55910 <!-- Prevent extensions from blocking parallel
pre-compilation -->
- [ ] #55908 <!-- add logic to prefer loading modules that are already
loaded -->
- [ ] #55886 <!-- irrationals: restrict assume effects annotations to
known types -->
- [ ] #55871 <!-- lowering: don't reverse handler order in
`(pop-handler-list ...)` -->
- [ ] #55870 <!-- fix infinite recursion in `promote_type` for
`Irrational` -->
- [ ] #55867 <!-- update `hash` doc string: `widen` not required any
more -->
- [ ] #55851 <!-- [REPL] Fix #55850 by using `safe_realpath` instead of
`abspath` in `projname` -->
- [ ] #55813 <!-- Check for conflicting `@ccallable` name before JIT
registration -->
- [ ] #55743 <!-- doc: heap snapshot viewing -->
- [ ] #55741 <!-- Change annotations to use a NamedTuple -->
- [ ] #55534 <!-- Set stdlib sources as read-only during installation
-->
- [ ] #55499 <!-- propagate the terminal's `displaysize` to the
`IOContext` used by the REPL -->
- [ ] #55458 <!-- Allow for generically extracting unannotated string
-->
- [ ] #55457 <!-- Make AnnotateChar equality consider annotations -->
- [ ] #55220 <!-- `isfile_casesensitive` fixes on Windows -->
- [ ] #55169 <!-- `propertynames` for SVD respects private argument -->
- [ ] #54457 <!-- Make `String(::Memory)` copy -->
- [ ] #53957 <!-- tweak how filtering is done for what packages should
be precompiled -->
- [ ] #51479 <!-- prevent code loading from lookin in the versioned
environment when building Julia -->
- [ ] #50813 <!-- More doctests for Sockets and capitalization fix -->
- [ ] #50157 <!-- improve docs for `@inbounds` and
`Base.@propagate_inbounds` -->
@IanButterworth IanButterworth deleted the ib/heap_devtools_fix branch October 5, 2024 03:13
This was referenced Oct 7, 2024
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Heap snapshot does not seem to work anymore on 1.11 (in chrome profile loader)
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