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* gc.c (gc_mark): get rid of pushing useless objests.

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* gc.c (rgengc_rememberset_mark): bypass gc_mark() in order to push
	  sunny old object at minor gc.
	* gc.c (gc_mark_children): move sunny old check to gc_mark().
	* gc.c (rgengc_check_shady): remove DEMOTE that already unnecessary.
	* gc.c (rb_gc_writebarrier): ditto.
	  
	  change sunny old check point in order to save mark stack and
	  remove unnatural rest_sweep & demote.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41097 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
tarui 2013-06-05 16:15:26 +00:00
parent 2b78c32561
commit 3a17a592da
2 changed files with 23 additions and 19 deletions
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12
ChangeLog
View File

@ -1,3 +1,15 @@
Thu Jun 6 00:59:44 2013 Masaya Tarui <tarui@ruby-lang.org>
* gc.c (gc_mark): get rid of pushing useless objests.
* gc.c (rgengc_rememberset_mark): bypass gc_mark() in order to push
sunny old object at minor gc.
* gc.c (gc_mark_children): move sunny old check to gc_mark().
* gc.c (rgengc_check_shady): remove DEMOTE that already unnecessary.
* gc.c (rb_gc_writebarrier): ditto.
change sunny old check point in order to save mark stack and
remove unnatural rest_sweep & demote.
Thu Jun 6 00:52:42 2013 Masaya Tarui <tarui@ruby-lang.org>
* gc.c (rgengc_rememberset_mark): change scan algorithm for performance:

30
gc.c
View File

@ -2974,8 +2974,6 @@ rgengc_check_shady(rb_objspace_t *objspace, VALUE obj)
if (objspace->rgengc.parent_object_is_promoted &&
RVALUE_SHADY(obj) && !rgengc_remembered(objspace, obj)) {
RVALUE_DEMOTE(obj);
rgengc_remember(objspace, obj);
if (objspace->rgengc.during_minor_gc == FALSE) { /* major/full GC */
objspace->rgengc.remembered_shady_object_count++;
@ -2992,6 +2990,15 @@ gc_mark(rb_objspace_t *objspace, VALUE ptr)
if (LIKELY(objspace->mark_func_data == 0)) {
rgengc_check_shady(objspace, ptr);
if (!gc_mark_ptr(objspace, ptr)) return; /* already marked */
#if USE_RGENGC
if (objspace->rgengc.during_minor_gc) {
/* only minor gc skip marking promoted objects */
if (RVALUE_PROMOTED(ptr)) {
rgengc_report(3, objspace, "gc_mark: %p (%s) was promoted.\n", ptr, obj_type_name((VALUE)ptr));
return; /* old gen */
}
}
#endif /* USE_RGENGC */
push_mark_stack(&objspace->mark_stack, ptr);
}
else {
@ -3041,13 +3048,6 @@ gc_mark_children(rb_objspace_t *objspace, VALUE ptr)
rb_bug("gc_mark_children: (1) %p (%s) is shady and promoted.\n", (void *)obj, obj_type_name((VALUE)obj));
}
if (objspace->rgengc.during_minor_gc) {
/* only minor gc skip marking promoted objects */
if (RVALUE_PROMOTED(obj)) {
rgengc_report(3, objspace, "gc_mark_children: %p (%s) was promoted.\n", obj, obj_type_name((VALUE)obj));
return; /* old gen */
}
}
/* minor/major common */
if (RVALUE_SUNNY(obj)) {
@ -3608,7 +3608,8 @@ rgengc_rememberset_mark(rb_objspace_t *objspace)
bitset = bits[j];
while (bitset) {
if (bitset & 1) {
gc_mark(objspace, (VALUE)p);
if (gc_mark_ptr(objspace, (VALUE)p))
push_mark_stack(&objspace->mark_stack, (VALUE) p);
rgengc_report(2, objspace, "rgengc_rememberset_mark: mark %p (%s)\n", p, obj_type_name((VALUE)p));
if (RVALUE_SUNNY(p)) {
@ -3657,15 +3658,6 @@ rb_gc_writebarrier(VALUE a, VALUE b)
if (!rgengc_remembered(objspace, a)) {
rgengc_report(2, objspace, "rb_gc_wb: %p (%s) -> %p (%s)\n",
(void *)a, obj_type_name(a), (void *)b, obj_type_name(b));
/* need to sweep all slots before demote */
/* TODO: check delayed sweeping slot or not
* if delayed sweepling slot, then mark it
* else demote simple
*/
rest_sweep(objspace);
RVALUE_DEMOTE(a);
rgengc_remember(objspace, a);
}
}