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* Revert https://github.com/ruby/ruby/pull/2486卜部昌平2019-10-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commits: 10d6a3aca7 8ba48c1b85 fba8627dc1 dd883de5ba 6c6a25feca 167e6b48f1 7cb96d41a5 3207979278 595b3c4fdd 1521f7cf89 c11c5e69ac cf33608203 3632a812c0 f56506be0d 86427a3219 . The reason for the revert is that we observe ABA problem around inline method cache. When a cache misshits, we search for a method entry. And if the entry is identical to what was cached before, we reuse the cache. But the commits we are reverting here introduced situations where a method entry is freed, then the identical memory region is used for another method entry. An inline method cache cannot detect that ABA. Here is a code that reproduce such situation: ```ruby require 'prime' class << Integer alias org_sqrt sqrt def sqrt(n) raise end GC.stress = true Prime.each(7*37){} rescue nil # <- Here we populate CC class << Object.new; end # These adjacent remove-then-alias maneuver # frees a method entry, then immediately # reuses it for another. remove_method :sqrt alias sqrt org_sqrt end Prime.each(7*37).to_a # <- SEGV ```
* refactor add rb_id_table_foreach_with_replace_with_key卜部昌平2019-09-301-0/+1
| | | | | | This is a pure refactoring to reduce copy & paste. Also the new function is made visible from other parts of the interpreter, to be used later.
* refactor delete ID_TABLE_ITERATOR_RESULT_END卜部昌平2019-09-301-1/+0
| | | | Not used from anywhere.
* Add `GC.compact` again.tenderlove2019-04-201-0/+3
| | | | | | 🙏 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67620 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* Reverting compaction for nowtenderlove2019-04-171-3/+0
| | | | | | For some reason symbols (or classes) are being overridden in trunk git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67598 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* Adding `GC.compact` and compacting GC support.tenderlove2019-04-171-0/+3
| | | | | | | | | | | This commit adds the new method `GC.compact` and compacting GC support. Please see this issue for caveats: https://bugs.ruby-lang.org/issues/15626 [Feature #15626] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67576 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* Reverting all commits from r67479 to r67496 because of CI failureskazu2019-04-101-3/+0
| | | | | | | | Because hard to specify commits related to r67479 only. So please commit again. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* Adding `GC.compact` and compacting GC support.tenderlove2019-04-091-0/+3
| | | | | | | | | | | This commit adds the new method `GC.compact` and compacting GC support. Please see this issue for caveats: https://bugs.ruby-lang.org/issues/15626 [Feature #15626] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67479 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* id_table.h: dummy sentinelnobu2016-08-061-0/+1
| | | | | | | * id_table.h (rb_id_table_iterator_result): add dummy sentinel member because C standard prohibits a trailing comma. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55821 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* id_table: const correctness for _size and _memsizenormal2015-11-021-2/+2
| | | | | | | | | | | | | | | | | | | | | This allows us to swap in rb_id_table_memsize for st_memsize (which takes a "const st_table *") more easily. It also makes sense to do the same for rb_id_table_size, too; as the table cannot be altered when accessing size. * id_table.h (rb_id_table_size): const arg (rb_id_table_memsize): ditto * id_table.c (st_id_table_size): ditto (st_id_table_memsize): ditto (list_id_table_size): ditto (list_id_table_memsize): ditto (hash_id_table_size): ditto (hash_id_table_memsize): ditto (mix_id_table_size): ditto (mix_id_table_memsize): ditto git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52428 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* id_table.h: include guardnobu2015-09-171-0/+4
| | | | | | * id_table.h (RUBY_ID_TABLE_H): add include guard. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51887 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* id_table.h: callback function typesnobu2015-08-261-2/+5
| | | | | | | | | | * id_table.h (rb_id_table_foreach_func_t): define callback function type for rb_id_table_foreach(). * id_table.h (rb_id_table_foreach_values_func_t): ditto for rb_id_table_foreach_values(). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51682 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* * id_table.h: introduce ID key table.ko12015-08-121-0/+23
[Feature #11420] This table only manage ID->VALUE table to reduce overhead of st. Some functions prefixed rb_id_table_* are provided. * id_table.c: implement rb_id_table_*. There are several algorithms to implement it. Now, there are roughly 4 types: * st * array * hash (implemented by Yura Sokolov) * mix of array and hash The macro ID_TABLE_IMPL can choose implementation. You can see detailes about them at the head of id_table.c. At the default, I choose 34 (mix of list and hash). This is not final decision. Please report your suitable parameters or your data structure. * symbol.c: introduce rb_id_serial_t and rb_id_to_serial() to represent ID by serial number. * internal.h: use id_table for method tables. * class.c, gc.c, marshal.c, vm.c, vm_method.c: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51541 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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