* internal.h: use __builtin_bswap16() if possible.

* configure.in: check existence of __builtin_bswap16().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43831 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-11-25

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43832 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* gc.c: change terminology OLDSPACE -> OLDMALLOC.
  (oldspace -> oldmalloc for variable names)
  OLDSPACE is confusing because it is not includes slots.
  To more clearly, rename such as (oldspace_limit -> oldmalloc_limit).
  It is clear that it measures (estimates) malloc()'ed size.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/ruby/test_gc.rb: catch up last commit.
  Now RUBY_GC_OLDSPACE_LIMIT(...) is RUBY_GC_OLDMALLOC_LIMIT(...).



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43834 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* gc.c (gc_stat): add internal information.
  * heap_swept_slot
  * malloc_increase
  * malloc_limit
  * remembered_shady_object
  * remembered_shady_object_limit
  * old_object
  * old_object_limit
  * oldmalloc_increase
  * oldmalloc_limit
* gc.c (gc_stat): rename names.
  * heap_live_num -> heap_live_slot
  * heap_free_num -> heap_free_slot
  * heap_final_slot -> heap_final_slot
  Quote from RDoc of GC.stat():
    "The contents of the hash are implementation specific and may
    be changed in the future."
* test/ruby/test_gc.rb: catch up this change.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43835 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* gc.c: change terminlogy "..._num" to "..._slots" about slot opetaion.
  * final_num -> final_slots
  * objspace_live_num() -> objspace_live_slots()
  * objspace_limit_num() -> objspace_limit_slots()
  * objspace_free_num() -> objspace_free_slots()



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* gc.c: continue to change OLDSPACE -> OLDMALLOC.
  RGENGC_ESTIMATE_OLDSPACE -> RGENGC_ESTIMATE_OLDMALLOC.
* gc.c: add a new major GC reason GPR_FLAG_MAJOR_BY_OLDMALLOC.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43837 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/-ext-/tracepoint/test_tracepoint.rb: catch up GC.stat changes
  at r43835.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43838 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* internal.h: do not use ruby_sized_xrealloc() and ruby_sized_xfree()
  if HAVE_MALLOC_USABLE_SIZE (or _WIN32) is defined.
  We don't need these function if malloc_usable_size() is available.
* gc.c: catch up this change.
* gc.c: define HAVE_MALLOC_USABLE_SIZE on _WIN32.
* array.c (ary_resize_capa): do not use ruby_sized_xfree() with
  local variable to avoid "unused local variable" warning.
  This change only has few impact.
* string.c (rb_str_resize): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43839 b2dd03c8-39d4-4d8f-98ff-823fe69b080e