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2025-11-25Store fiber serial as Ractor-localJohn Hawthorn
2025-11-25Fix the fallback using mutexNobuyoshi Nakada
2025-11-25Reapply "Fix stdatomic case in `rbimpl_atomic_u64_fetch_add`"Nobuyoshi Nakada
This reverts commit 8a68dc7bdd3d1c97677a6633a4f2b5e524c492ae.
2025-11-24Revert "Fix stdatomic case in `rbimpl_atomic_u64_fetch_add`" (#15311)Max Bernstein
This reverts commit d3b6f835d565ec1590059773fc87589ddf8adc37. This broke the Docker builds and presumably also 32-bit machines that don't already have libatomic installed.
2025-11-22Fix stdatomic case in `rbimpl_atomic_u64_fetch_add`Nobuyoshi Nakada
On some platoforms, 64bit atomic operations need the dedicated helper library.
2025-11-21Fix stdatomic case in rbimpl_atomic_u64_fetch_addJohn Hawthorn
This was failing on crossruby, likely because HAVE_GCC_ATOMIC_BUILTINS was true, but HAVE_GCC_ATOMIC_BUILTINS_64 was false. We probably should have feature detection of 64-bit stdatomics like we do for GCC, but for now let's keep rbimpl_atomic_u64_fetch_add in sync with load/set.
2025-11-20Use a serial to keep track of Mutex-owning FiberJohn Hawthorn
Previously this held a pointer to the Fiber itself, which requires marking it (which was only implemented recently, prior to that it was buggy). Using a monotonically increasing integer instead allows us to avoid having a free function and keeps everything simpler. My main motivations in making this change are that the root fiber lazily allocates self, which makes the writebarrier implementation challenging to do correctly, and wanting to avoid sending Mutexes to the remembered set when locked by a short-lived Fiber.
2025-08-12Implement rbimpl_atomic_value_loadJohn Hawthorn
This only adds the rbimpl_ version to include/ruby/atomic.h so that it is not a new public interface. We were already using RUBY_ATOMIC_VALUE_LOAD in a few locations. This will allow us to use other memory orders internally when desired.
2025-08-12Convert ATOMIC_LOAD_RELAXED to use new rbimpl_*John Hawthorn
2025-06-25Move RUBY_ATOMIC_VALUE_LOAD to ruby_atomic.hPeter Zhu
Deduplicates RUBY_ATOMIC_VALUE_LOAD by moving it to ruby_atomic.h.
2025-06-13Expect aligned pointer for the atomic operationsNobuyoshi Nakada
2025-06-05Allow volatile pointer relaxed atomic operationsNobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/13521
2025-06-05Win: Cast of qualifier in `rbimpl_atomic_u64_load_relaxed`Nobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/13521
2025-06-04Check for 64bit atomic operationsNobuyoshi Nakada
May not be supported on some 32bit architectures. ``` /usr/lib/gcc-cross/m68k-linux-gnu/14/../../../../m68k-linux-gnu/bin/ld: ../../libruby-static.a(vm.o): in function `rbimpl_atomic_u64_set_relaxed': /home/ubuntu/build/ruby/master/m68k-linux/../src/ruby_atomic.h:60:(.text+0x2468): undefined reference to `__atomic_store_8' /usr/lib/gcc-cross/m68k-linux-gnu/14/../../../../m68k-linux-gnu/bin/ld: ../../libruby-static.a(vm.o): in function `rbimpl_atomic_u64_load_relaxed': /home/ubuntu/build/ruby/master/m68k-linux/../src/ruby_atomic.h:43:(.text+0x2950): undefined reference to `__atomic_load_8' ``` Notes: Merged: https://github.com/ruby/ruby/pull/13509
2025-06-03Use all 32bits of `shape_id_t` on all platformsJean Boussier
Followup: https://github.com/ruby/ruby/pull/13341 / [Feature #21353] Even thought `shape_id_t` has been make 32bits, we were still limited to use only the lower 16 bits because they had to fit alongside `attr_index_t` inside a `uintptr_t` in inline caches. By enlarging inline caches we can unlock the full 32bits on all platforms, allowing to use these extra bits for tagging. Notes: Merged: https://github.com/ruby/ruby/pull/13500
2025-05-20Use atomic load to read interrupt maskJohn Hawthorn
Notes: Merged: https://github.com/ruby/ruby/pull/13357
2020-12-24Expose atomic operation macros with RUBY prefixNobuyoshi Nakada
Now we need atomic operations, which are lighter than mutex, more widely for extension libraries because of Ractor. Notes: Merged: https://github.com/ruby/ruby/pull/3983
2020-09-26fix typo [Bug #17194]NARUSE, Yui
2020-04-26Solaris does not provide atomic_sub familyNobuyoshi Nakada
2020-04-26Clarified return value of atomic macrosNobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/3061
2020-04-20Removed phony atomic operations for void* and VALUENobuyoshi Nakada
2020-04-20Bail out if no atomic operation foundNobuyoshi Nakada
As atomic operations are mandatory now, not-working phony fallback definitions are not only useless but confusing and harmful.
2020-02-06fine-grained #ifdef guard for Sparc systems卜部昌平
There are cases when sizeof(int) == sizeof(long) == sizeof(size_t). On such cases however int and long are incompatible types in theory. We should not assume typedef long size_t, because on Solaris size_t is actually a typedef of int. This reduces compiler warnings on such situations. Notes: Merged: https://github.com/ruby/ruby/pull/2885
2019-12-26add several __has_something macro卜部昌平
With these macros implemented we can write codes just like we can assume the compiler being clang. MSC_VERSION_SINCE is defined to implement those macros, but turned out to be handy for other places. The -fdeclspec compiler flag is necessary for clang to properly handle __has_declspec(). Notes: Merged: https://github.com/ruby/ruby/pull/2711
2018-08-01move atomic logic from mjit.c from ruby_atomic.hshyouhei
This macro shall be shared among other files, not just for mjit.c. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64156 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-08-01(cosmetic) add blank lines for better readabilityshyouhei
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64155 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-01-02statement experssion is a GCCismshyouhei
should mark as such. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61557 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-12-09Revert r52995nobu
revert slow atomic operations. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52997 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-12-09use atomic operationsnobu
* regcomp.c (onig_chain_link_add): use atomic operation instead of mutex. * regint.h (ONIG_STATE_{INC,DEC}_THREAD): ditto. * regparse.c (PopFreeNode, node_recycle): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52995 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-12-05ruby_atomic.h: fix old value type of ATOMIC_CASnobu
* ruby_atomic.h (ATOMIC_CAS): old value to be swapped should be same as the destination. immediate value may need type promotion. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52893 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-12-05ruby_atomic.h: fix the argument ordernobu
* ruby_atomic.h (ATOMIC_SIZE_CAS): fix the argument order of InterlockedCompareExchange64. new value and then old value is the last. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52892 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-09-07ruby_atomic.h: fix typonobu
* ruby_atomic.h (ATOMIC_VALUE_CAS): fix typo. TODO: make arguments of all CAS macros consistent. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51781 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-08-06ruby_atomic.h: atomic VALUE operationsnobu
* ruby_atomic.h (ATOMIC_VALUE_EXCHANGE, ATOMIC_VALUE_CAS): add atomic operations for VALUE. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51498 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2015-06-21ruby_atomic.h: refine ATOMIC_PTR_CASnobu
* ruby_atomic.h (ATOMIC_PTR_CAS): define by generic CAS macro, not via size_t, to suppress a warning by mingw gcc. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50984 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-10-19ruby_atomic.h (ATOMIC_OR): should return previous valuenobu
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48036 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-01-12iseq.c: potential memory leaknobu
* iseq.c (iseq_load): keep type_map to get rid of memory leak. based on a patch by Eric Wong at [ruby-core:59699]. [Bug #9399] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44568 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-12-05ruby_atomic.h: ATOMIC_PTR_EXCHANGEnobu
* ruby_atomic.h (ATOMIC_PTR_EXCHANGE): atomic exchange function for a generic pointer. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43996 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-12-05ruby_atomic.h: duplicate codenobu
* ruby_atomic.h (ATOMIC_SIZE_CAS): remove duplicate code as ATOMIC_CAS(). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43995 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-11-27* ruby_atomic.h: remove duplicate definisions between ATOMIC_XXXglass
and ATOMIC_SIZE_XXX. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43883 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-11-27* ruby_atomic.h: define ATOMIC_SIZE_CAS() withglass
__atomic_compare_exchange_n() and refactoring. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43882 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-11-26* ruby_atomic.h: use __atomic builtin functions supported by GCC.glass
__sync family are legacy functions now and it is recommended that new code use the __atomic functions. http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html * configure.in: check existence of __atomic functions. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43851 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-11-14* ruby_atomic.h (ATOMIC_SIZE_CAS): fix compile error on Solaris since r43460.ngoto
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43677 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-10-29ruby_atomic.h: ATOMIC_SIZE_CASnobu
* ruby_atomic.h (ATOMIC_SIZE_CAS): new macro, compare and swap size_t. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43460 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-10-18ruby_atomic.h: suppress a warningnobu
* ruby_atomic.h (ATOMIC_SIZE_SUB): add cast to suppress a warning by VC++. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43356 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-07-03ruby_atomic.h: ATOMIC_CAS on VC6nobu
* ruby_atomic.h (rb_w32_atomic_cas): call InterlockedCompareExchange directly. * ruby_atomic.h (ATOMIC_CAS): fix missing function call. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41760 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-07-03ruby_atomic.h: suppress warnignsnobu
* ruby_atomic.h (ATOMIC_CAS): suppress C4022 and C4047 warnings in VC6. only InterlockedCompareExchange is declared using PVOID. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-04-06* configure.in (AC_CHECK_HEADERS): atomic.h for Solaris atomic_ops.ngoto
* ruby_atomic.h: Skip using Solaris10 atomic_ops on Solaris 9 or earlier if atomic.h is not available. [ruby-dev:47229] [Bug #8228] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40163 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2012-11-27* ruby_atomic.h (ATOMIC_CAS): added for Solaris and other platforms.ngoto
* ruby_atomic.h, signal.c (NEED_RUBY_ATOMIC_OPS): renamed from NEED_RUBY_ATOMIC_EXCHANGE. * signal.c (ruby_atomic_compare_and_swap): naive, non-atomic compare-and-swap implementation only used for platforms without valid support for atomic operations. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37897 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2012-11-26* ruby_atomic.h (ATOMIC_CAS): new macro for compare-and-exchange.kosaki
* vm_core.h (struct rb_thread_struct): add interrupt_mask member. * thread.c (thread_create_core, Init_Thread): initialize th->thread_mask. * vm_core.h (RUBY_VM_INTERRUPTED_ANY): new macro for avoiding bare th->interrupt_flag. * vm_core.h (RUBY_VM_INTERRUPTED, RUBY_VM_INTERRUPTED): check th->interrupt_mask. * thread.c (set_unblock_function, rb_thread_schedule): replace th->interrupt_flag with RUBY_VM_INTERRUPTED_ANY() * signal.c (signal_exec): set up thread->interrupt_mask for preventing recursive trap handler. * vm_core.h (RUBY_VM_CHECK_INTS, RUBY_VM_CHECK_INTS_BLOCKING): ditto. * thread.c (rb_threadptr_execute_interrupts): don't process interrupt if it is masked. [Bug #6009] [ruby-core:42524] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37861 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2012-11-09* ruby_atomic.h: renamed from atomic.h to avoid header file name conflictngoto
on Solaris 10. [ruby-dev:46414] [Bug #7287] * gc.c, signal.c, vm_core.h, common.mk: reflect the rename from atomic.h to ruby_atomic.h. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37604 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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