[ruby-core:120091] [Ruby master Feature#10038] Extend ObjectSpace.dump to expose buffer addresses for String and Array
From:
"ko1 (Koichi Sasada) via ruby-core" <ruby-core@...>
Date:
2024-12-04 02:49:10 UTC
List:
ruby-core #120091
Issue #10038 has been updated by ko1 (Koichi Sasada).
Status changed from Assigned to Rejected
too old.
----------------------------------------
Feature #10038: Extend ObjectSpace.dump to expose buffer addresses for String and Array
https://bugs.ruby-lang.org/issues/10038#change-110838
* Author: ko1 (Koichi Sasada)
* Status: Rejected
* Assignee: tmm1 (Aman Karmani)
----------------------------------------
ObjectSpace.dump() expose internal information in JSON.
How about to expose buffer addresses for String and Array?
```diff
Index: ext/objspace/objspace_dump.c
===================================================================
--- ext/objspace/objspace_dump.c (revision 46821)
+++ ext/objspace/objspace_dump.c (working copy)
@@ -178,12 +178,16 @@ dump_object(VALUE obj, struct dump_confi
dump_append(dc, ", \"broken\":true");
if (FL_TEST(obj, RSTRING_FSTR))
dump_append(dc, ", \"fstring\":true");
- if (STR_SHARED_P(obj))
+
+ if (STR_SHARED_P(obj)) {
dump_append(dc, ", \"shared\":true");
+ }
else {
dump_append(dc, ", \"bytesize\":%ld", RSTRING_LEN(obj));
- if (!STR_EMBED_P(obj) && !STR_SHARED_P(obj) && (long)rb_str_capacity(obj) != RSTRING_LEN(obj))
+ if (!STR_EMBED_P(obj) && !STR_SHARED_P(obj) && (long)rb_str_capacity(obj) != RSTRING_LEN(obj)) {
dump_append(dc, ", \"capacity\":%ld", rb_str_capacity(obj));
+ dump_append(dc, ", \"ptr\":\"%p\"", RSTRING_PTR(obj));
+ }
if (is_ascii_string(obj)) {
dump_append(dc, ", \"value\":");
@@ -205,8 +209,14 @@ dump_object(VALUE obj, struct dump_confi
dump_append(dc, ", \"length\":%ld", RARRAY_LEN(obj));
if (RARRAY_LEN(obj) > 0 && FL_TEST(obj, ELTS_SHARED))
dump_append(dc, ", \"shared\":true");
- if (RARRAY_LEN(obj) > 0 && FL_TEST(obj, RARRAY_EMBED_FLAG))
+ if (RARRAY_LEN(obj) > 0) {
+ if (FL_TEST(obj, RARRAY_EMBED_FLAG)) {
dump_append(dc, ", \"embedded\":true");
+ }
+ else {
+ dump_append(dc, ", \"ptr\":\"%p\"", RARRAY_PTR(obj));
+ }
+ }
break;
case T_CLASS:
```
With this hack, we can know the real memory address of them and cooperate with other native tools.
BTW, ObjectSpace.dump() should support T_SYMBOL.
--
https://bugs.ruby-lang.org/
______________________________________________
ruby-core mailing list -- ruby-core@ml.ruby-lang.org
To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/