Free objects with finalizer more eagerly #13995
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yuyichao
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Very nice! JuliaGizmos/Reactive.jl#76 (comment) suggests another source for the specific problem we were having. |
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On #14127 I get: julia> gc()
julia> gc()
GC error (probable corruption) :
<?#0x7f2c6c2c4880::<?#0x7f2c6c2c4850::<?#0x7f2c6c2c4860::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::<?#0x7f2c6c205c10::•>>>>>>>>>>>>>>>>>>>>>>>>>>
signal (6): Aborted
gsignal at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
abort at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
unknown function (ip: 0x7f2e6d8fe3fa)
jl_gc_collect at /home/tim/src/julia-0.5/usr/bin/../lib/libjulia.so (unknown line)
gc at base.jl:80
jlcall_gc_22732 at (unknown line)
jl_apply_generic at /home/tim/src/julia-0.5/usr/bin/../lib/libjulia.so (unknown line)
unknown function (ip: 0x7f2e6d8cd0d3)
unknown function (ip: 0x7f2e6d8cc4c7)
unknown function (ip: 0x7f2e6d8e14d8)
jl_toplevel_eval_in_warn at /home/tim/src/julia-0.5/usr/bin/../lib/libjulia.so (unknown line)
eval at ./boot.jl:264
jl_apply_generic at /home/tim/src/julia-0.5/usr/bin/../lib/libjulia.so (unknown line)
eval_user_input at REPL.jl:3
jlcall_eval_user_input_22565 at (unknown line)
jl_apply_generic at /home/tim/src/julia-0.5/usr/bin/../lib/libjulia.so (unknown line)
anonymous at REPL.jl:92
unknown function (ip: 0x7f2e6d8d3918)
unknown function (ip: (nil))
Aborted (core dumped) |
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tanmaykm
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- Checking weakref value to be null as an indicator of gc is not reliable. We probably need a finalizer for that, but all finalizers don't get called immediately at the moment (ref: JuliaLang/julia#13995). Going without that optimization for now. - fixed an issue where cache eviction was corrupting the cache
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| @@ -262,6 +264,12 @@ static size_t max_collect_interval = 500000000UL; | |||
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| // global variables for GC stats | |||
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| // Resetting the object to a young object, this is used when marking the | |||
| // finalizer list to collect them the next time because the object is very | |||
| // likely dead. This also won't break the GC invariance since these object | |||
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* Run all the finalizers at the same time in a dead reference tree * Reset objects that are only reachable from finalizer list as young and clean so that they can be collect during next quick GC without being promoted to old gen. Closes #14127
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| // Reset the age and old bit for any unmarked objects referenced by the | ||
| // `to_finalize` list. These objects are only reachable from this list | ||
| // and should not be referenced by any old objects so this won't break | ||
| // the GC invariant. |
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so that they can be collect during next quick GC without being promoted to old gen.
@timholy Could you please check if this helps with the problem you have in JuliaGizmos/Reactive.jl#76 (comment) .
Closes #14127