Simplified LXR GC - #358

Draft

wenyuzhao wants to merge 628 commits into

mmtk:jdk-21from

wenyuzhao:lxr-x/jdk21-simplified

This pull request is big! We're only showing the most recent 250 commits

Commits on Apr 3, 2023

Refactor and cleanup compressed pointer related code
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a2d43d5
Merge branch 'lxr' into lxr-merge
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1ce50de
Update mmtk-core
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bf675ed
Add missing header file
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9f196d5

Commits on Apr 4, 2023

Opportunstic copying based on virtual space constraint
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1d5dfc9

Commits on Apr 10, 2023

object size distribution
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b109883

Commits on Apr 11, 2023

Make MMTk respect to JVM `ParallelGCThreads` flag
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86a5cd2

Commits on Apr 14, 2023

Fix different RC bits support
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5c23a18
Update openjdk revision
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f363e40
Update mmtk-core
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5445dfe
Update cargo version
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75a6d04
WIP: Rename field unlog bits side metadata
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530aa92

Commits on Apr 15, 2023

Fix barrier
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dc21642
Compressed pointer support
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1b7bb69
Fix import
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d27da84

Commits on Apr 19, 2023

Fix Generational GCs
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c77edee
Merge commit '24776584572fa91ab3d7a09c0404c83414c8e4fd' into lxr-merge
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04ab339
Merge commit '21eb88fe09b2c2d05923d063e3ae9b11ef6aca06' into lxr-merge
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committed
5e4c937
Merge tag 'v0.18.0' into lxr-merge
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aae6d2c
Fix assertion failures
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c6bd5d4
cargo fmt
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c991bc4
Merge branch 'lxr' into lxr-merge
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7e417eb
Merge branch 'lxr-merge' of github.com:wenyuzhao/mmtk-openjdk into lxr-merge
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5336c3e
Update mmtk-core
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bde4b05
Remove `WeakProcessor` roots
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3be9379
Revert "Remove `WeakProcessor` roots"
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e2bbaeb

Commits on Apr 21, 2023

Fix time.stw accountng; Improve class unloading performance
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3c7ac1b
Fix time.stw accounting
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d048758

Commits on Apr 30, 2023

Merge branch 'lxr' into lxr-merge
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2822c9c

Commits on May 9, 2023

Add jvmti hook
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cf9cb8a

Commits on May 16, 2023

Optimize update_weak_processor
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26ec22f
Revert weak processor optimization
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176f2ef

Commits on May 18, 2023

Optimize code root scanning: Only scan young code roots
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39cb2d6

Commits on May 21, 2023

Fix nmethod unregister
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committed
cb69c9d

Commits on May 25, 2023

root counters
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7a04371

Commits on May 31, 2023

Fix openjdk weak storage unloading
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69b78d9

Commits on Jun 2, 2023

parallel string table scanning
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61c756b

Commits on Jun 6, 2023

immix field barrier
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6c424cd

Commits on Jun 7, 2023

Upgrade to rust 1.70
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c0623da
Remove the second weak processor scan for RC pauses
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3d96ce6

Commits on Jun 9, 2023

weak handle barrier support
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ae9f789

Commits on Jun 10, 2023

minor
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b44ccfc

Commits on Jun 11, 2023

support bulk thread scanning
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9c6f98b

Commits on Jun 12, 2023

Revert bulk thread scan
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e1449f8
Bulk thread scan
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53f36d1
8-Byte Mark Bit Coverage
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eeb5455
update mmtk-core
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b521ade

Commits on Jun 13, 2023

update openjdk
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abec59b

Commits on Jun 15, 2023

stack root scanning timer
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cd6e40f

Commits on Jun 27, 2023

Disable stack root timer
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848974d

Commits on Jun 29, 2023

Report weak CLD roots to remset
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cceda2b
minor
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10acf7b
Update mmtk-core
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5bf81d6
Weak handle load barrier
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98eb6f9

Commits on Jul 21, 2023

Commits on Aug 2, 2023

Merge commit 'b80877cba8947f9d46550b99d4931ba556784540' into lxr-merge
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a478fec
Fix build error
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e468630
Merge commit '52680f92f9da008348e8da3a9721228a724832bf' into lxr-merge
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926d911
Merge commit '21a3c45238268bc47831fdff8ebe9c63aa87d142' into lxr-merge
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49f5ca0
Update mmtk-core
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526e043
Merge remote-tracking branch 'origin/master' into lxr-merge
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committed
cc3952d

Commits on Aug 3, 2023

Update mmtk-core
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9e6214a

Commits on Aug 6, 2023

Update mmtk-core
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e461a61

Commits on Aug 8, 2023

Update mmtk-core
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f1b16c9

Commits on Aug 9, 2023

(WIP) Merge branch 'master' into compressed-oops
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1bce41b

Commits on Aug 12, 2023

Fix build errors
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4a3dd51
Merge branch 'master' into compressed-oops
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1cfb888

Commits on Aug 16, 2023

Use custom heap args
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4612446
Update inferfaces
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e9c357c
remove redundant
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cd73c37

Commits on Aug 17, 2023

cleanup
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ec82007
Delete derivable constants
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465c4d5
Remove `vm_space_size`
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c1b7b6f
Update
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de66ed3

Commits on Aug 22, 2023

Update api
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bf901a6

Commits on Aug 24, 2023

Update Cargo.lock
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c615a5a
Merge branch 'master' into compressed-oops
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bc9eb5d
cleanup
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6416987
cleanup
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89c109d
Update Cargo.lock
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39da263
Update Cargo.toml
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8303535

Commits on Aug 25, 2023

Commits on Aug 28, 2023

Update mmtk-core
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d382526
Merge branch 'compressed-oops' into lxr
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316328a
cleanup
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8a84dd4

Commits on Aug 30, 2023

Update mmtk-core and rust toolchain
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1141a30

Commits on Sep 22, 2023

Update mmtk-core
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08218fc

Commits on Oct 10, 2023

minor
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297a9d1

Commits on Oct 11, 2023

Optionally use discontig heap when compressed oops is disabled
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351f8e2
Update `MMTkCollectorPolicy::_heap_alignment`
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366f12a

Commits on Oct 12, 2023

Fix build error
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d9e4a59
Merge commit '4aa89d0207f6bbd8e96e1feaf7661fd5e7d7b187' into lxr-merge
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03c8828
Merge commit '9ab13ae3ac9c68c5f694cdd527a63ca909e27b15' into lxr-merge
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16bf4a8
Merge commit 'f0ff0b57945e890db15989f93a79695751ec2d73' into lxr-merge
wenyuzhao
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8cf4ce5
Update mmtk-core
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5a15bac
Merge tag 'v0.20.0' into lxr-merge
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8fa93eb

Commits on Oct 16, 2023

Commits on Oct 17, 2023

Merge branch 'lxr' into lxr-merge
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73e22d3

Commits on Oct 20, 2023

Remove unnecessary bound check in allocation fast-path
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c88bc99

Commits on Oct 21, 2023

Remove rustflags `+sse4a`
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2ac0459

Commits on Oct 31, 2023

wip: barrier eager branch
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2124a47

Commits on Nov 7, 2023

wip
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a6e80ca

Commits on Nov 8, 2023

wip
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0d43896

Commits on Nov 9, 2023

wip
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07ea963

Commits on Nov 13, 2023

wip
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4bbae7a

Commits on Nov 21, 2023

Refactor weak-roots related code
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e66b8c2

Commits on Nov 22, 2023

Fix JNICritical_lock safepoint check errors
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6c52e71

Commits on Nov 23, 2023

Update mmtk-core
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9869048

Commits on Dec 5, 2023

Pass `ConcGCThreads` to mmtk
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8c87321
Add `same_stw_and_conc_threads` flag
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b164b35
max priority for gc worker threads
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9153895

Commits on Dec 12, 2023

minor optimizations
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9e67a7b
Fix MMTK_CONC_THREADS
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36cb147
Update mmtk-core
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c6fe72d
minor
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8c13fc9
Merge branch 'lxr' of https://github.com/wenyuzhao/mmtk-openjdk into lxr
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cdbc8de

Commits on Dec 19, 2023

Update mmtk-core
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b7c0f8a
LOG_CLS_UNLOAD
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dbad26e

Commits on Dec 20, 2023

Skip klass cleaning task if no class was unloaded
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f1014a6

Commits on Jan 10, 2024

force 12 or 6 gc worker threads
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e133065

Commits on Jan 17, 2024

Disable class unloading logging
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73d7b96

Commits on Jan 18, 2024

WIP: Fix code cache unloading
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c11e26b
cleanup
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dd9886c

Commits on Jan 19, 2024

Fix class unloading
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80ac9de
Reduce duplicated CLD scanning
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e74ec86
Fix code cache scanning performance
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c406530

Commits on Jan 20, 2024

Minor
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a20da9c

Commits on Jan 22, 2024

Add more timers
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6cbb42b
revert
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fcec162

Commits on Jan 23, 2024

wip
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e0ad684
Fix WeakProcessor
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98d0902
Fix code cache roots
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1d88404

Commits on Jan 24, 2024

cleanup
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d942eab
Update mmtk-core
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27091d2

Commits on Jan 30, 2024

g3_compatibilities
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2cf7c70

Commits on May 22, 2024

bump mmtk-core
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21a82fa
Update Cargo.lock
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b9df8b5

Commits on May 24, 2024

Fix WeakProcessor
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a40c38d

Commits on May 27, 2024

Update barrier
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c0e5ee1
barrier experiments
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46f70a5

Commits on Jul 21, 2024

initial prefetch support
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00ee1ed

Commits on Aug 1, 2024

Update hash
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53107d5
Update hash
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aad4d0e
Merge branch 'lxr-x/prefetch' into lxr
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f787e4b
Update hash
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4529947
Merge branch 'lxr' into lxr-merge
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6298ddc
Update hash
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6f9d50a
Merge tag 'v0.21.0' into lxr-merge
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90984e3

Commits on Aug 2, 2024

Merge tag 'v0.22.0' into lxr-merge
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63a6085
Merge tag 'v0.23.0' into lxr-merge
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1f92c86
Merge tag 'v0.24.0' into lxr-merge
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b34c4f9

Commits on Aug 6, 2024

Merge commit 'c44a6f8ba48b7fcaf16be33b294da53020df514a' into lxr-merge
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78d58f1
Merge commit '589c9ee6ba4d51937353fd4d599f2a4a1a488c19' into lxr-merge
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24e11cf
Merge commit '3d98c8b7b2d42da2d84e5e01e29e64a148b935a6' into lxr-merge
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e1a7280
Merge tag 'v0.25.0' into lxr-merge
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23f1594
Merge commit 'b9e3aadb9f0956b46a331f402291346e9deceab6' into lxr-merge
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0fca300
Merge tag 'v0.26.0' into lxr-merge
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9189e25
Clean up
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5f79679

Commits on Aug 8, 2024

Fix safepoint trigger
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689439a
Update mmtk-core
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9b39764

Commits on Sep 24, 2024

Minor refactorings
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d348aec
Fix rust 1.80 warnings
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a0c8363

Commits on Jan 10, 2025

Minor
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09f87be

Commits on Apr 16, 2025

Merge tag 'v0.27.0' into lxr-merge
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c236740
Merge tag 'v0.28.0' into lxr-merge
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9e909aa

Commits on Apr 17, 2025

Merge tag 'v0.29.0' into lxr-merge
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cf0468f

Commits on Apr 20, 2025

Merge tag 'v0.30.0' into lxr-merge
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2d4386a
Merge branch 'master' into lxr-merge
wenyuzhao
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34a3bfa

Commits on Apr 22, 2025

fmt and fix warnings
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01177c1
Update mmtk-core
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5065111

Commits on Apr 28, 2025

Update mmtk-core
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46546ed

Commits on Dec 2, 2025

Demote re-registered nmethods (#336)
no-defun-allowed
authored
3e27334

Commits on Jan 9, 2026

Move to Rust 1.92 (#338)

qinsoon
and
mmtkgc-bot
authored
007d6e0

Commits on Feb 6, 2026

Bump version to v0.32.0 (#341)

qinsoon
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mmtkgc-bot
authored
7b30172

Commits on Feb 23, 2026

Merge tag 'v0.31.0' into lxr-merge
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committed
264ae72

Commits on Feb 24, 2026

Commits on Feb 25, 2026

Commits on Mar 1, 2026

Merge tag 'v0.32.0-jdk-21' into lxr-x/jdk21
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b98120a

Commits on Mar 3, 2026

LXR without class unloading and weak processor working
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87c25eb

Commits on Mar 4, 2026

Optimizations: Reduce code cache roots & improve parallelism
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44e8b97

Commits on Mar 10, 2026

update_reserved_argument_area_size
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1b8e9a8
Fix update_reserved_argument_area_size
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6d99555

Commits on Mar 11, 2026

Fix array_copy_requires_gc_barriers
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16bd5f9

Commits on Mar 20, 2026

optimize
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31a6fb8
More optimizations
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376df85
cleanup
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53fb390
More barrier optimizations
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f676c19

Commits on Mar 22, 2026

Fix h2o
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3e25f1e
Debug
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6fee9fc

Commits on Mar 25, 2026

cleanup
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c673263

Commits on Mar 29, 2026

optimize
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4cf4303

Commits on Mar 31, 2026

class unloading working
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88f5b80
Enhance fix_oop_relocations to support forward-only mode during class unloading
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3d90d3a
Minor
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2b09d2d
optimize
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1aca878

Commits on Apr 1, 2026

cleanup
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522bfa9
fix
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eaff406
cleanup
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05a1d55
Fix
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6bd3a64
Fix
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c7018d0
Fix assertions
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f3d407b

Commits on Apr 3, 2026

Revert block allocator changes
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8e2fac3
cleanup
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cf6fbf2

Commits on Apr 4, 2026

Revert class unloading support
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ae7b844

Commits on Apr 7, 2026

Revert weak refs
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85819a3
Remove bulk thread scanning support (scan_multiple_thread_roots)

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claude
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6ed14cd
Remove dead feature flags, instrumentation, and stale declarations

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claude
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acc3d31
Remove array scanning optimization support from OpenJDK binding

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claude
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45e43d6
Add panic abort configuration for development profile in Cargo.toml
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ef5a530
Refactor object reference handling and clean up unused code in MMTk integration
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095ebdd

Commits on Apr 8, 2026

Commits on Apr 9, 2026

Refactor barrier slow-paths to call Rust FFI directly, bypassing C++ wrappers

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claude
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f203c49

Commits on Apr 15, 2026

Refactor MMTk barrier functions to remove mutator parameter from assembly calls
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3dc8af4

Commits on Apr 18, 2026

Implement ConcurrentPlan
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e20459d
Remove VMCollection::set_concurrent_marking_state
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e88bb41

Commits on Apr 28, 2026

Refactor work bucket stages and update root scanning logic

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Copilot
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198abe0

Commits on Jul 26, 2026

Commits on Jul 28, 2026

Update mmtk-core
qinsoon
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e7553f4
Test LXR in CI
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b888874

Commits on Jul 29, 2026

Fix mmtk_enqueue_references
wks
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716247a
Bump mmtk-core and deps revision
wks
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f77bcc8

Commits on Jul 30, 2026

Dont skip post_alloc for default allocation semantics
qinsoon
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c93672d
Reinit oop storage par state for second scanning for
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a3ccf46

Commits on Jul 31, 2026

Use MMTkBookKeepingCodeBlobClosure. Skip MMTkUpdateClosure in
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d61c340

Commits on Aug 3, 2026

Update mmtk-core: queue flip workaround for conix
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f378fb1
Run LXR tests with no weak reference
qinsoon
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008bf1c
Update mmtk-core: fix concurrent ix
qinsoon
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7b86f80

Commits on Aug 5, 2026

Remove Mutex::_no_safepoint_check_flag from JNICritical_lock
qinsoon
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dcc02e1

Commits on Aug 6, 2026

Commits on Aug 7, 2026

Rename markcompact plans (JDK21) (#365)

qinsoon
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mmtkgc-bot
committed
48fb087
Update mmtk-core. Enable finalization for non-lXR plans
qinsoon
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06a34a6
Merge branch 'jdk-21' into lxr-x/jdk21-simplified
qinsoon
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f07d8ca
Update mmtk-core
qinsoon
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2f439b0
Update mmtk-core
wks
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27301ce
Use experimenal root-kind API
wks
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55e9fa0