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/