* .gdbinit (ruby_gdb_init): initialize enums.

* .gdbinit (rb_id2name): initialize debug info too.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44160 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  RClass->m_tbl with serial. This prevents double marking method
  tables, since many classes/modules can share the same method table.
  This improves minor mark time in a large application by 30%.
* internal.h (struct method_table_wrapper): Define new
  wrapper struct with additional serial.
* internal.h (RCLASS_M_TBL_INIT): New macro for initializing method
  table wrapper and st_table.
* method.h (void rb_sweep_method_entry): Rename rb_free_m_table to
  rb_free_m_tbl for consistentcy
* .gdbinit (define rb_method_entry): Update rb_method_entry gdb helper
  for new method table structure.
* class.c: Use RCLASS_M_TBL_WRAPPER and
  RCLASS_M_TBL_INIT macros.
* class.c (rb_include_class_new): Share WRAPPER between module and
  iclass, so serial can prevent double marking.
* eval.c (rb_prepend_module): ditto.
* eval.c (rb_using_refinement): ditto.
* gc.c: Mark and free new wrapper struct.
* gc.c (obj_memsize_of): Count size of additional wrapper struct.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43973 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43559 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  RGenGC is designed as 2 generational GC, young and old generation.
  Young objects will be promoted to old objects after one GC.
  Old objects are not collect until major (full) GC.
  The issue of this approach is some objects can promoted as old
  objects accidentally and not freed until major GC.
  Major GC is not frequently so short-lived but accidentally becoming
  old objects are not freed.
  For example, the program "loop{Array.new(1_000_000)}" consumes huge
  memories because short lived objects (an array which has 1M
  elements) are promoted while GC and they are not freed before major
  GC.
  To solve this problem, generational GC with more generations
  technique is known. This patch implements three generations gen GC.
  At first, newly created objects are "Infant" objects.
  After surviving one GC, "Infant" objects are promoted to "Young"
  objects.
  "Young" objects are promoted to "Old" objects after surviving
  next GC.
  "Infant" and "Young" objects are collected if it is not marked
  while minor GC. So that this technique solves this problem.
  Representation of generations:
  * Infant: !FL_PROMOTED and !oldgen_bitmap [00]
  * Young :  FL_PROMOTED and !oldgen_bitmap [10]
  * Old   :  FL_PROMOTED and  oldgen_bitmap [11]
  The macro "RGENGC_THREEGEN" enables/disables this feature, and
  turned off as default because there are several problems.
  (1) Failed sometimes (Heisenbugs).
  (2) Performance down.
      Especially on write barriers. We need to detect Young or Old
      object by oldgen_bitmap. It is slower than checking flags.
  To evaluate this feature on more applications, I commit this patch.
  Reports are very welcome.
  This patch includes some refactoring (renaming names, etc).
* include/ruby/ruby.h: catch up 3gen GC.
* .gdbinit: fix to show a prompt "[PROMOTED]" for promoted objects.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43530 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* .gdbinit (rp): insert a colon between type "SYMBOL" and ID value.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43066 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* .gdbinit (rp_id): show ID type.

* template/id.h.tmpl (ruby_id_types): make enum for debugger.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42985 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* .gdbinit (rp_string): extract from rp.

* .gdbinit (rp_id): use rp_string to show the content.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42984 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* .gdbinit (rp_id): extract from rp and rb_id2name.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42983 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* .gdbinit (rp_class): show class name, if possible.

* .gdbinit (rb_ancestors): call rp_class directly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42723 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* .gdbinit (rb_classname): follow classname() change at r36584, which
  hash second argument now.  reported by 36584 via IRC.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42722 b2dd03c8-39d4-4d8f-98ff-823fe69b080e