5 commits

Author	SHA1	Message	Date
Koichi Sasada	d741c77b5f	fix ivar with shareable objects issue ... Instance variables of sharable objects are accessible only from main ractor, so we need to check it correctly.	2020-12-12 06:19:18 +09:00
Koichi Sasada	fad97f1f96	sync generic_ivtbl ... generic_ivtbl is a process global table to maintain instance variables for non T_OBJECT/T_CLASS/... objects. So we need to protect them for multi-Ractor exection. Hint: we can make them Ractor local for unshareable objects, but now it is premature optimization.	2020-10-14 16:36:55 +09:00
Koichi Sasada	79df14c04b	Introduce Ractor mechanism for parallel execution ... This commit introduces Ractor mechanism to run Ruby program in parallel. See doc/ractor.md for more details about Ractor. See ticket [Feature #17100] to see the implementation details and discussions. [Feature #17100] This commit does not complete the implementation. You can find many bugs on using Ractor. Also the specification will be changed so that this feature is experimental. You will see a warning when you make the first Ractor with `Ractor.new`. I hope this feature can help programmers from thread-safety issues.	2020-09-03 21:11:06 +09:00
卜部昌平	4ff3f20540	add #include guard hack ... According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html	2020-04-13 16:06:00 +09:00
Koichi Sasada	dd723771c1	fastpath for ivar read of FL_EXIVAR objects. ... vm_getivar() provides fastpath for T_OBJECT by caching an index of ivar. This patch also provides fastpath for FL_EXIVAR objects. FL_EXIVAR objects have an each ivar array and index can be cached as T_OBJECT. To access this ivar array, generic_iv_tbl is exposed by rb_ivar_generic_ivtbl() (declared in variable.h which is newly introduced). Benchmark script: Benchmark.driver(repeat_count: 3){|x| x.executable name: 'clean', command: %w'../clean/miniruby' x.executable name: 'trunk', command: %w'./miniruby' objs = [Object.new, 'str', {a: 1, b: 2}, [1, 2]] objs.each.with_index{|obj, i| rep = obj.inspect rep = 'Object.new' if /\#/ =~ rep x.prelude str = %Q{ v#{i} = #{rep} def v#{i}.foo @iv # ivar access method (attr_reader) end v#{i}.instance_variable_set(:@iv, :iv) } puts str x.report %Q{ v#{i}.foo } } } Result: v0.foo # T_OBJECT clean: 85387141.8 i/s trunk: 85249373.6 i/s - 1.00x slower v1.foo # T_STRING trunk: 57894407.5 i/s clean: 39957178.6 i/s - 1.45x slower v2.foo # T_HASH trunk: 56629413.2 i/s clean: 39227088.9 i/s - 1.44x slower v3.foo # T_ARRAY trunk: 55797530.2 i/s clean: 38263572.9 i/s - 1.46x slower	2019-11-29 03:11:04 +09:00