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* gc.c: fix oldgen/remembered_shady counting algorithm.

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* gc.c (rgengc_check_shady): increment
  `objspace->rgengc.remembered_shady_object_count' here.
* gc.c (rgengc_remember): return FALSE if obj is already remembered.
* gc.c (rgengc_rememberset_mark): make it void.
* gc.c (gc_mark_children): fix to double counting oldgen_object_count
  at minor GC.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41614 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2013-06-25 03:24:07 +00:00
parent 2b93ed5e76
commit ab0a003183
2 changed files with 50 additions and 18 deletions
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14
ChangeLog
View File

@ -1,3 +1,17 @@
Tue Jun 25 12:23:30 2013 Koichi Sasada <ko1@atdot.net>
* gc.c: fix oldgen/remembered_shady counting algorithm.
* gc.c (rgengc_check_shady): increment
`objspace->rgengc.remembered_shady_object_count' here.
* gc.c (rgengc_remember): return FALSE if obj is already remembered.
* gc.c (rgengc_rememberset_mark): make it void.
* gc.c (gc_mark_children): fix to double counting oldgen_object_count
at minor GC.
Tue Jun 25 12:07:18 2013 Tanaka Akira <akr@fsij.org>
* bignum.c (MSB): Removed.

54
gc.c
View File

@ -549,9 +549,9 @@ static const char *obj_type_name(VALUE obj);
#if USE_RGENGC
static int rgengc_remembered(rb_objspace_t *objspace, VALUE obj);
static void rgengc_remember(rb_objspace_t *objspace, VALUE obj);
static int rgengc_remember(rb_objspace_t *objspace, VALUE obj);
static void rgengc_mark_and_rememberset_clear(rb_objspace_t *objspace);
static size_t rgengc_rememberset_mark(rb_objspace_t *objspace);
static void rgengc_rememberset_mark(rb_objspace_t *objspace);
#define FL_TEST2(x,f) ((RGENGC_CHECK_MODE && SPECIAL_CONST_P(x)) ? (rb_bug("FL_TEST2: SPECIAL_CONST"), 0) : FL_TEST_RAW((x),(f)) != 0)
#define FL_SET2(x,f) do {if (RGENGC_CHECK_MODE && SPECIAL_CONST_P(x)) rb_bug("FL_SET2: SPECIAL_CONST"); RBASIC(x)->flags |= (f);} while (0)
@ -3064,10 +3064,8 @@ rgengc_check_shady(rb_objspace_t *objspace, VALUE obj)
#undef SAVED_REM
#endif /* RGENGC_CHECK_MODE >= 2 */
if (objspace->rgengc.parent_object_is_promoted &&
RVALUE_SHADY(obj) && !rgengc_remembered(objspace, obj)) {
rgengc_remember(objspace, obj);
if (objspace->rgengc.during_minor_gc == FALSE) { /* major/full GC */
if (objspace->rgengc.parent_object_is_promoted && RVALUE_SHADY(obj)) {
if (rgengc_remember(objspace, obj)) {
objspace->rgengc.remembered_shady_object_count++;
}
}
@ -3137,12 +3135,17 @@ gc_mark_children(rb_objspace_t *objspace, VALUE ptr)
/* minor/major common */
if (!RVALUE_SHADY(obj)) {
objspace->rgengc.parent_object_is_promoted = TRUE;
if (!RVALUE_PROMOTED(obj)) {
RVALUE_PROMOTE((VALUE)obj); /* non-shady object can be promoted to OLDGEN object */
rgengc_report(3, objspace, "gc_mark_children: promote %p (%s).\n", (void *)obj, obj_type_name((VALUE)obj));
objspace->rgengc.oldgen_object_count++;
}
else if (!objspace->rgengc.during_minor_gc) { /* major/full GC */
objspace->rgengc.oldgen_object_count++;
}
objspace->rgengc.parent_object_is_promoted = TRUE;
objspace->rgengc.oldgen_object_count++;
}
else {
rgengc_report(3, objspace, "gc_mark_children: do not promote shady %p (%s).\n", (void *)obj, obj_type_name((VALUE)obj));
@ -3457,7 +3460,7 @@ gc_marks_body(rb_objspace_t *objspace, int minor_gc)
if (objspace->rgengc.during_minor_gc) {
objspace->profile.minor_gc_count++;
objspace->rgengc.remembered_shady_object_count = rgengc_rememberset_mark(objspace);
rgengc_rememberset_mark(objspace);
}
else {
objspace->profile.major_gc_count++;
@ -3746,16 +3749,23 @@ rgengc_remembersetbits_get(rb_objspace_t *objspace, VALUE obj)
return MARKED_IN_BITMAP(bits, obj) ? 1 : 0;
}
static void
static int
rgengc_remembersetbits_set(rb_objspace_t *objspace, VALUE obj)
{
bits_t *bits = GET_HEAP_REMEMBERSET_BITS(obj);
MARK_IN_BITMAP(bits, obj);
if (MARKED_IN_BITMAP(bits, obj)) {
return FALSE;
}
else {
MARK_IN_BITMAP(bits, obj);
return TRUE;
}
}
/* wb, etc */
static void
/* return FALSE if already remembered */
static int
rgengc_remember(rb_objspace_t *objspace, VALUE obj)
{
rgengc_report(2, objspace, "rgengc_remember: %p (%s, %s) %s\n", (void *)obj, obj_type_name(obj),
@ -3792,7 +3802,7 @@ rgengc_remember(rb_objspace_t *objspace, VALUE obj)
}
}
rgengc_remembersetbits_set(objspace, obj);
return rgengc_remembersetbits_set(objspace, obj);
}
static int
@ -3804,14 +3814,17 @@ rgengc_remembered(rb_objspace_t *objspace, VALUE obj)
return result;
}
static size_t
static void
rgengc_rememberset_mark(rb_objspace_t *objspace)
{
size_t i, j;
size_t shady_object_count = 0, clear_count = 0;
RVALUE *p, *offset;
bits_t *bits, bitset;
#if RGENGC_PROFILE > 0
size_t shady_object_count = 0, clear_count = 0;
#endif
for (i=0; i<heaps_used; i++) {
p = objspace->heap.sorted[i]->start;
bits = GET_HEAP_REMEMBERSET_BITS(p);
@ -3832,10 +3845,14 @@ rgengc_rememberset_mark(rb_objspace_t *objspace)
if (!RVALUE_SHADY(p)) {
rgengc_report(2, objspace, "rgengc_rememberset_mark: clear %p (%s)\n", p, obj_type_name((VALUE)p));
CLEAR_IN_BITMAP(bits, p);
#if RGENGC_PROFILE > 0
clear_count++;
#endif
}
else {
#if RGENGC_PROFILE > 0
shady_object_count++;
#endif
}
}
p++;
@ -3845,17 +3862,16 @@ rgengc_rememberset_mark(rb_objspace_t *objspace)
}
}
rgengc_report(2, objspace, "rgengc_rememberset_mark: clear_count: %"PRIdSIZE", shady_object_count: %"PRIdSIZE"\n", clear_count, shady_object_count);
rgengc_report(2, objspace, "rgengc_rememberset_mark: finished");
#if RGENGC_PROFILE > 0
rgengc_report(2, objspace, "rgengc_rememberset_mark: clear_count: %"PRIdSIZE", shady_object_count: %"PRIdSIZE"\n", clear_count, shady_object_count);
if (gc_prof_record(objspace)) {
gc_profile_record *record = gc_prof_record(objspace);
record->remembered_normal_objects = clear_count;
record->remembered_shady_objects = shady_object_count;
}
#endif
return shady_object_count;
}
static void
@ -3916,7 +3932,9 @@ rb_gc_writebarrier_unprotect_promoted(VALUE obj)
rgengc_remembered(objspace, obj) ? " (already remembered)" : "");
RVALUE_DEMOTE(obj);
rgengc_remember(objspace, obj);
objspace->rgengc.remembered_shady_object_count++;
#if RGENGC_PROFILE
objspace->profile.shade_operation_count++;