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
* gc.c (gc_stat): Add :last_collection_flags for reason/trigger/type of
last GC run.
* gc.c (gc_prof_sweep_timer_stop): Record HAVE_FINALIZE GPR even
without GC_PROFILE_MORE_DETAIL.
* gc.c (gc_profile_flags): Add GC::Profiler.decode_flags to make sense
of GC.stat[:last_collection_flags]
* test/ruby/test_gc.rb (class TestGc): Test for above.
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heap_tomb_page_length.
* test/ruby/test_gc.rb: fix to use GC.stat[:heap_eden_page_length]
instead of GC.stat[:heap_length].
This test expects `heap_eden_page_length' (used pages size).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43874 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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
RGENGC_ESTIMATE_OLDSPACE -> RGENGC_ESTIMATE_OLDMALLOC.
* gc.c: add a new major GC reason GPR_FLAG_MAJOR_BY_OLDMALLOC.
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* 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
(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
Now we have following environments (and related variable names).
* RUBY_GC_HEAP_INIT_SLOTS
* RUBY_GC_HEAP_FREE_SLOTS
* RUBY_GC_HEAP_GROWTH_FACTOR (new from 2.1)
* RUBY_GC_HEAP_GROWTH_MAX_SLOTS (new from 2.1)
* obsolete
* RUBY_FREE_MIN -> RUBY_GC_HEAP_FREE_SLOTS (from 2.1)
* RUBY_HEAP_MIN_SLOTS -> RUBY_GC_HEAP_INIT_SLOTS (from 2.1)
* RUBY_GC_MALLOC_LIMIT
* RUBY_GC_MALLOC_LIMIT_MAX (new from 2.1)
* RUBY_GC_MALLOC_LIMIT_GROWTH_FACTOR (new from 2.1)
* RUBY_GC_OLDSPACE_LIMIT (new from 2.1)
* RUBY_GC_OLDSPACE_LIMIT_MAX (new from 2.1)
* RUBY_GC_OLDSPACE_LIMIT_GROWTH_FACTOR (new from 2.1)
* test/ruby/test_gc.rb: catch up this change.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43811 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* gc.c (gc_after_sweep): allocate pages to allocate at least
RUBY_HEAP_MIN_SLOTS.
[Bug #9137]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43795 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
rb_gc_set_params because it's only used in ruby internal.
* internal.h (ruby_gc_set_params): Declare rb_gc_set_params's
alias function.
* gc.c: ditto.
* ruby.c: use ruby_gc_set_params.
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objspace.
* gc.c (ruby_mimfree): added. It is similar to ruby_mimmalloc().
* internal.h: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43771 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
malloc_usable_size() is defined by malloc_np.h on FreeBSD.
* configure.in: check malloc.h and malloc_np.h.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43769 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* gc.c (vm_xrealloc, vm_xfree): use malloc_usable_size() to obtain old
size if available.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43760 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
They are not only used initial values.
Chikanaga-san: Congratulations on RubyPrize!
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43757 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Without this option, some application consumes huge memory.
(and there are only a few performance down)
Introduced new environment variables:
* RUBY_GC_HEAP_OLDSPACE (default 16MB)
* RUBY_GC_HEAP_OLDSPACE_MAX (default 128 MB)
* RUBY_GC_HEAP_OLDSPACE_GROWTH_FACTOR (default 1.2)
* gc.c (initial_malloc_limit): rename to initial_malloc_limit_min.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43755 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Basically, make an object graph of all of living objects before and
after marking and check status.
[Before marking: check WB sanity]
If there is a non-old object `obj' pointed from old object
(`parent') then `parent' or `obj' should be remembered.
[After marking: check marking miss]
Traversible objects with the object graph should be marked.
(However, this alert about objects pointed by machine context
can be false positive. We only display alert.)
[Implementation memo]
objspace_allrefs() creates an object graph.
The object graph is represented by st_table, key is object (VALUE)
and value is referring objects. Referring objects are stored by
"struct reflist".
* gc.c (init_mark_stack): do not use push_mark_stack_chunk() at init.
This pre-allocation causes failure on is_mark_stask_empty()
without any pushing.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43744 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
rb_fstring() used rb_gc_mark() to avoid freeing used string.
However, rb_gc_mark() set mark bit *and* pushes mark_stack.
rb_gc_resurrect() does only set mark bit if it is before sweeping.
* string.c (rb_fstring): use rb_gc_resurrect.
* internal.h: add decl.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43718 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
To reduce memory usage, sweep as soon as possible.
This behavior is same as Ruby 2.0.0 and before.
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If GC_PROFILE_MORE_DETAIL && GC_PROFILE_DETAIL_MEMORY,
maxrss, minflt and majflt are added to each profile record.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43591 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_malloc_increase() can be called without GVL.
However, gc_rest_sweep() assumes acquiring GVL.
To avoid this problem, check GVL before gc_rest_sweep().
[Bug #9090]
This workaround introduces possibility to set malloc_limit as
wrong value (*1). However, this may be rare case. So I commit it.
*1: Without rest_sweep() here, gc_rest_sweep() can decrease
malloc_increase due to ruby_sized_xfree().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43574 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
conservative for closing to memory consumption of ruby 2.0.
* gc.c (GC_MALLOC_LIMIT, GC_MALLOC_LIMIT_GROWTH_FACTOR):
Adjust parameters for new algorithm.
Example: make gcbench-rdoc on a pc
time maxrss
2.0.0p343 285.27 281853952
trunk before patch 207.19 690405376
trunk after patch 211.59 312500224
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43558 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
