gc_prof_set_heap_info() just after sweeping to calculate
live object number correctly.
(live object number = total generated number (before marking) -
total freed number (after sweeping))
* gc.c (gc_marks): record `oldgen_object_count' into current profile`
record directly.
* gc.c (rgengc_rememberset_mark): same for remembered_normal_objects
and remembered_shady_objects.
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records (because it points a set of records) and add a field
rb_objspace::profile::current_record to point a current profiling
record.
* gc.c: use above fields.
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because all of remembered objects are called for gc_mark_children().
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remembered objects directly instead of pushing on the mark stack.
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No need to separate major/minor GC.
* gc.c (gc_setup_mark_bits): remove gc_clear_mark_bits() and unify to
this function.
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Use RARRAY_ASET() or RARRAY_PTR_USE() to modify Array objects.
* array.c, gc.c: catch up above changes.
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Introduce the following C APIs:
* RSTRUCT_RAWPTR(st) returns pointer (do WB on your risk).
The type of returned pointer is (const VALUE *).
* RSTRUCT_GET(st, idx) returns idx-th value of struct.
* RSTRUCT_SET(st, idx, v) set idx-th value by v with WB.
And
* RSTRUCT_PTR(st) returns pointer with shady operation.
The type of returned pointer is (VALUE *).
* struct.c, re.c, gc.c, marshal.c: rewrite with above APIs.
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disabled.
* gc.c (gc_marks_test): store oldgen count and shady count
before test marking and restore them after marking.
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(1) normal objects count in remember set
(2) shady objects count in remember set
each GC timing.
* gc.c (gc_profile_record_get): enable to access above information
and REMOVING_OBJECTS, EMPTY_OBJECTS.
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* gc.c (ruby_initial_gc_stress_ptr): now gc_stress is a VALUE.
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When RGENGC_CHECK_MODE >= 2, all minor marking, run normal minor
marking *and* major/full marking. After that, compare the results
and shows BUG if a object living with major/full marking but dead
with minor marking.
After detecting bugs, print references information.
(RGENGC_CHECK_MODE == 2, show references to dead object)
(RGENGC_CHECK_MODE == 3, show all references)
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rb_data_type_struct::flags. Now, this flags is passed
at T_DATA object creation. You can specify FL_WB_PROTECTED
on this flag.
* iseq.c: making non-shady iseq objects.
* class.c, compile.c, proc.c, vm.c: add WB for iseq objects.
* vm_core.h, iseq.h: constify fields to detect WB insertion.
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* gc.c (gc_mark_children): show more info for broken object.
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In this mode, show all references if there is
a miss-corrected object.
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`GC.stress=(flag)' accepts integer to control behavior of GC.
See code for details. Of course, this feature is only for MRI.
You can debug RGenGC (WB) using `GC.stress = 1'.
Using this option, do minor marking at all possible places.
GC::STRESS_MINOR_MARK = 1 and GC::STRESS_LAZY_SWEEP = 2
seem good to add.
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