Andy Wingo
5084730471
Add parallel root-tracing phase
2024-07-11 15:54:11 +02:00
Andy Wingo
ff1e1b1d44
whippet: avoid an atomic load when visiting already-marked objects
2024-07-10 11:50:08 +02:00
Andy Wingo
d50455ed1b
Add new gc_atomic_forward_object_size API
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Also remove an unused function in whippet.c
2024-07-10 11:50:05 +02:00
Andy Wingo
247f9432a4
Tighten up typing of trace workers and trace worker data
2024-07-08 18:44:24 +02:00
Andy Wingo
5ff78f01c8
Add gc_trace_worker_call_with_data
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Goal is to pass thread-local evacuation buffers.
2024-07-08 18:10:18 +02:00
Andy Wingo
ac5d546481
Remove heap_tracer; get to heap from tracer directly
2024-07-08 17:35:58 +02:00
Andy Wingo
ba9459ce56
Rework tracer API to pass tracer to all functions
2024-07-08 17:29:24 +02:00
Andy Wingo
921c012b51
Add gc_ prefix to tracer API
2024-07-08 17:15:00 +02:00
Andy Wingo
b4543ad641
Factor out tracer interface to own file
2024-07-08 14:38:15 +02:00
Andy Wingo
82afee8693
Break simple serial worklist out to its own file
2024-07-08 11:49:47 +02:00
Andy Wingo
4c6f1b6cef
Break local worklist out to its own file
2024-07-08 10:49:46 +02:00
Andy Wingo
dd3953ef1a
Factor trace deque out to shared-worklist.h
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Also increase alignment to account for cache line prefetcher.
2024-07-08 10:42:58 +02:00
Andy Wingo
b4bf949df6
Add Guix manifest.scm
2024-07-03 10:38:55 +02:00
Andy Wingo
5ba0aec869
Remove unused function
2023-12-10 22:08:05 +01:00
Andy Wingo
1267f77de3
Basic stats records latency readings in a histogram, prints p95
2023-12-10 21:24:03 +01:00
Andy Wingo
4b51376447
Add mechanism to compose event listeners
2023-12-06 21:48:39 +01:00
Andy Wingo
3ce75b2bad
Fix bug in which we could forget to mark stopping mutators
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Separately track total mutator count, paused mutators, and inactive
mutators. Paused mutators need to mark their roots before stopping. We
had a bug whereby a paused mutator would not wake up before the next
collection, which resulted in that mutator's roots not being marked.
Fix by resetting paused mutator count to 0 after collection, requiring
those mutators to sync up again.
2023-11-10 15:09:10 +01:00
Andy Wingo
adaffab3da
Fix a case where we might miss some sweeping
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Unlike next_hole, next_hole_in_block doesn't finish_hole, so it doesn't
clear metadata bits. Fix to always finish_hole when
finish_sweeping_in_block.
2023-11-10 15:07:45 +01:00
Andy Wingo
40be1a03cb
Add debug-mode heap verification to Whippet
2023-11-10 15:07:31 +01:00
Andy Wingo
361d880277
optdebug build uses -O2 instead of -Og
2023-11-06 22:12:34 +01:00
Andy Wingo
5ad83e49e1
Fix the debug fix
2023-11-06 22:06:51 +01:00
Andy Wingo
c4396a4214
Remove a release-mode debugging printout in whippet
2023-11-05 10:27:09 +01:00
Andy Wingo
3a1a5e0368
Fix linking against static libgc.a
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Thanks to Thorsten Ball. Fixes #1 , #2 .
2023-10-25 11:33:24 +02:00
Andy Wingo
3d2a12c684
Rework parallel tracing state machine
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Instead of sending a message to each worker, we pthread_cond_broadcast
at the start. Instead of having N worker threads, we have N-1 threads
and the main thread also does work. Instead of termination being
detected by the worker threads, let the main thread detect it. Avoid
parallelism if the mark stack is small enough, which can be the case for
ephemeron chains. Let aux threads exit when they have no work instead
of spinning: sharing will start them up again.
2023-10-23 11:26:33 +02:00
Andy Wingo
9cc12916a9
parallel marker: speed up sharing from local to published queue
2023-10-23 11:17:28 +02:00
Andy Wingo
2cab526963
Fix gc_basic_stats_finish
2023-10-20 14:14:29 +02:00
Andy Wingo
9176aa650f
Fix BDW ephemeron implementation
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* src/gc-ephemeron.c: Use key null-ness as dead ephemeron indicator;
works better with BDW-GC's disappearing link.
* src/bdw.c (gc_heap_ephemeron_trace_epoch): Fix to actually define the
epoch. Whoops!
2023-10-20 11:44:38 +02:00
Andy Wingo
cfc8c8a9b8
Allow embedder to request a major GC
2023-10-18 16:34:20 +02:00
Andy Wingo
0c7bdacc51
Revert "Allow embedder to request a major GC"
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This reverts commit f39e6ee69f0aa2e14227a019a5332ba129418977.
2023-10-18 15:13:41 +02:00
Andy Wingo
514dcc702e
Allow embedder to request a major GC
2023-10-18 15:13:41 +02:00
Andy Wingo
8aa2036331
Fix optdebug warnings
2023-10-18 15:13:41 +02:00
Andy Wingo
9ce8ee2921
Fix unused API, outdated assertion
2023-10-17 21:45:06 +02:00
Andy Wingo
a6e34c3594
Don't abort semi if parallelism > 1
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Re-interpret parallelism option as a maximum.
2023-10-16 21:36:27 +02:00
Andy Wingo
44a4e1c131
Add manual links
2023-10-16 12:45:13 +02:00
Andy Wingo
4d3e8c30d7
Update manual
2023-10-16 12:43:09 +02:00
Andy Wingo
5130380ae5
Rework stats collection to use listener interface
2023-10-16 12:13:08 +02:00
Andy Wingo
c7499740c9
Fix GCC detection
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Doh
2023-10-07 23:10:33 +02:00
Andy Wingo
3c63de9b9d
bdw: Turn off all_interior_pointers
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Quoth gc_inline.h, which makes freelists:
/* Note that for these routines, it is the clients responsibility to */
/* add the extra byte at the end to deal with one-past-the-end pointers.*/
/* In the standard collector configuration, the collector assumes that */
/* such a byte has been added, and hence does not trace the last word */
/* in the resulting object. */
/* This is not an issue if the collector is compiled with */
/* DONT_ADD_BYTE_AT_END, or if GC_all_interior_pointers is not set. */
2023-10-07 23:09:10 +02:00
Andy Wingo
9936d98f70
Rework heap marking
2023-10-02 22:48:59 +02:00
Andy Wingo
d56356fec7
Add gc_safepoint_mechanism gc attr
2023-10-02 22:47:35 +02:00
Andy Wingo
41591d8722
bdw: Ensure heap and mutators are live
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Before, we were relying on the heap and mutators being reachable from
roots. This is no longer the case.
2023-09-30 21:58:46 +02:00
Andy Wingo
4d1358219b
Fix amazing error in bdw.c
2023-09-22 15:19:55 +02:00
Andy Wingo
120cd91b02
Use -flto=auto to do LTO in parallel
2023-09-22 14:44:21 +02:00
Andy Wingo
296e5e8458
BDW collector marks mutator/heap roots
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Needed if a mutator has off-heap (mmap) storage.
2023-09-21 10:08:23 +02:00
Andy Wingo
dc013cfb58
Change gc_allocate_ephemeron to return struct gc_ephemeron
2023-09-11 11:48:32 +02:00
Andy Wingo
db36c48efd
Update extern space API to allow for evacuation
2023-08-16 11:08:12 +02:00
Andy Wingo
fbe49598f5
Add "extern space"
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This is mostly for static data.
2023-08-15 11:38:11 +02:00
Andy Wingo
da5a4633df
embed.mk: silent by default, bis
2023-08-12 10:26:12 +02:00
Andy Wingo
3f92f36947
embed.mk: silent by default
2023-08-12 10:23:29 +02:00
Andy Wingo
a3019c961a
embed.mk fix
2023-08-11 23:17:59 +02:00
