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Add a counter for compaction

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Keep track of the number of times the compactor ran.  I would like to
use this as a way to keep track of inline cache reference updates.
This commit is contained in:
Aaron Patterson 2019-11-07 12:46:14 -08:00
parent 597ec43543
commit dddf5afb79
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2 changed files with 12 additions and 0 deletions
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6
gc.c
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@ -748,6 +748,7 @@ typedef struct rb_objspace {
#if USE_RGENGC
size_t minor_gc_count;
size_t major_gc_count;
size_t compact_count;
#if RGENGC_PROFILE > 0
size_t total_generated_normal_object_count;
size_t total_generated_shady_object_count;
@ -8549,6 +8550,8 @@ gc_compact_after_gc(rb_objspace_t *objspace, int use_toward_empty, int use_doubl
mjit_gc_start_hook(); // prevent MJIT from running while moving pointers related to ISeq
objspace->profile.compact_count++;
if (use_verifier) {
gc_verify_internal_consistency(objspace);
}
@ -8890,6 +8893,7 @@ enum gc_stat_sym {
#if USE_RGENGC
gc_stat_sym_minor_gc_count,
gc_stat_sym_major_gc_count,
gc_stat_sym_compact_count,
gc_stat_sym_remembered_wb_unprotected_objects,
gc_stat_sym_remembered_wb_unprotected_objects_limit,
gc_stat_sym_old_objects,
@ -8966,6 +8970,7 @@ setup_gc_stat_symbols(void)
#if USE_RGENGC
S(minor_gc_count);
S(major_gc_count);
S(compact_count);
S(remembered_wb_unprotected_objects);
S(remembered_wb_unprotected_objects_limit);
S(old_objects);
@ -9138,6 +9143,7 @@ gc_stat_internal(VALUE hash_or_sym)
#if USE_RGENGC
SET(minor_gc_count, objspace->profile.minor_gc_count);
SET(major_gc_count, objspace->profile.major_gc_count);
SET(compact_count, objspace->profile.compact_count);
SET(remembered_wb_unprotected_objects, objspace->rgengc.uncollectible_wb_unprotected_objects);
SET(remembered_wb_unprotected_objects_limit, objspace->rgengc.uncollectible_wb_unprotected_objects_limit);
SET(old_objects, objspace->rgengc.old_objects);

6
test/ruby/test_gc_compact.rb
View file

@ -54,4 +54,10 @@ class TestGCCompact < Test::Unit::TestCase
assert GC.compact
walk_ast ast
end
def test_compact_count
count = GC.stat(:compact_count)
GC.compact
assert_equal count + 1, GC.stat(:compact_count)
end
end