* skip on incremental marking because not sure what happen :p
* rb_gc_writebarrier_remember() is enough to mark children.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50024 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* win32/win32.c (fileattr_to_unixmode): do not set S_IWGRP and
S_IWOTH reset in wstati64.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50021 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* random.c (fill_random_bytes): release the handle in the static
variable, not a local variable.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50019 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* common.mk (verconf.h): use BOOTSTRAPRUBY as generic_erb.rb and
the template are not dependent on built-in constants.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50018 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* iseq.c (rb_iseq_clone): need WB for iseq1->klass = iseq0->klass
(done in MEMCPY).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50015 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
If RGENGC_OLD_NEWOBJ_CHECK > 0, then create old objects
(not new objects) periodically.
Create one old objects per RGENGC_OLD_NEWOBJ_CHECK objects are
created.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50013 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* not inline on RGENGC_CHECK_MODE > 0.
* check SPECIAL_CONST_P(obj) first.
* add a check that remembered_bit is only TRUE when old (age == 3).
* gc.c (RVALUE_DEMOTE): should clear RVALUE_REMEMBERED bit.
remembered_bit should be TRUE only for old (age == 3) objects.
Actually there are no effect because demoted objects will be
uncollectible WB unprotected objects (marked at the begginig of
every minor GC).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50011 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* long_lived -> uncollectible:
because this bitmap does not mean "long lived objects in past",
but means "prohibit collection thse objects until next major GC".
Uncollectible objects consist of two types objects, one is old
objects (WB protected objects which age == 3) and another is
uncollectible WB unprotected objects which are referred from old
objects
* remembered_wb_unprotected_objects ->
uncollectible_wb_unprotected_objects:
because uncollectible objects does not mean remembered objects.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50009 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
barrier (WB) implementation.
When finding reference from [Old obj] to [New obj] by WB, current
implementation marks [Old obj] as remembered old objects and marks
chilldren of [Old obj] at the beggining of marking.
Added (but disabled) code changes current behaviour. This fix promote
[New obj] to old and marks as a remembered old object. We can assume
"new objects referred from old objects are maybe long-lived old
objects".
Disadvantage of added algorithm is we may promote unwilling
short-lived objects. For example, consider many new objects push and
pop to an old stack object. All of new objects (short-lived objects)
promote to old objects unexpectedly.
To compare these behaviour, I add this new code (but disabled it).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50006 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* hash.c (rb_any_hash): use same hash values with Float#hash so
that -0.0 and +0.0 will be identical.
[ruby-core:68541] [Bug #10979]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49999 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* string.c (STR_SET_SHARED): ignore FAKESTR because only Ruby objects
can use write barrier.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49998 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
For incremental GC, we need to get a pointer to the objspace.
We can share this pointer for the following WB process.
And considering icache hit ratio, prcess in the GC.
* gc.c (rb_gc_writebarrier): added.
* gc.c (gc_writebarrier_generational, gc_writebarrier_incremental):
make them NOINLINE because inlining them into rb_gc_writebarrier()
makes a prologue code of rb_gc_writebarrier() longer (storing callee
save registers).
This patch improve the performance of WB on micro-benchmarks.
name ruby 2.1 trunk modified
vm1_gc_wb_ary* 0.511 0.632 0.532
vm1_gc_wb_ary_promoted* 0.578 0.701 0.674
vm1_gc_wb_obj* 0.419 0.575 0.492
vm1_gc_wb_obj_promoted* 0.537 0.664 0.618
(sec)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49987 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
slowpath for WB.
Before this change bm_vm1_gc_wb_ary.rb tried to check the performance
for WB slowpath (making a reference from oldobj to newobj). However,
from Ruby 2.2, 3 GCs are needed to promote new objects because
only 3 age objects are promted objects.
To compare fastpath and slowpath, introduce new "promoted" version
benchmark.
bm_vm1_gc_wb_ary.rb is for fastpath and
bm_vm1_gc_wb_ary_promoted.rb is for slowpath.
* benchmark/bm_vm1_gc_wb_obj(_promtoed).rb: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49985 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* dir.c (glob_helper): distinguish not-yet-stated and DT_UNKNOWN
by readdir, and traverse recursively for the former. Linux
readdir returns DT_UNKNOWN on some filesystems, e.g., smbfs,
iso9660.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49983 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* include/ruby/ruby.h (rb_data_object_alloc_warning): enable only
if __builtin_choose_expr works with __builtin_constant_p so that
warnings will be suppressed if klass is 0.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49978 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* include/ruby/ruby.h (rb_data_object_alloc_warning): enable only
if __builtin_choose_expr works with __builtin_constant_p so that
warnings will be suppressed if klass is 0.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49977 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
