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2023-11-08[DOC] RDoc for module Process (#8847)Burdette Lamar
2023-11-06Align comment [ci skip]Nobuyoshi Nakada
2023-10-12M:N thread scheduler for RactorsKoichi Sasada
This patch introduce M:N thread scheduler for Ractor system. In general, M:N thread scheduler employs N native threads (OS threads) to manage M user-level threads (Ruby threads in this case). On the Ruby interpreter, 1 native thread is provided for 1 Ractor and all Ruby threads are managed by the native thread. From Ruby 1.9, the interpreter uses 1:1 thread scheduler which means 1 Ruby thread has 1 native thread. M:N scheduler change this strategy. Because of compatibility issue (and stableness issue of the implementation) main Ractor doesn't use M:N scheduler on default. On the other words, threads on the main Ractor will be managed with 1:1 thread scheduler. There are additional settings by environment variables: `RUBY_MN_THREADS=1` enables M:N thread scheduler on the main ractor. Note that non-main ractors use the M:N scheduler without this configuration. With this configuration, single ractor applications run threads on M:1 thread scheduler (green threads, user-level threads). `RUBY_MAX_CPU=n` specifies maximum number of native threads for M:N scheduler (default: 8). This patch will be reverted soon if non-easy issues are found. [Bug #19842]
2023-10-03[DOC] State the precision of `Process.times` as platform-definedNobuyoshi Nakada
Remove the bad example that can lead to misunderstanding as if this precision is defined in Ruby.
2023-10-01[DOC] Another example for spawn (#8575)Burdette Lamar
2023-09-27[DOC] Fix minor inconsistenciesBurdetteLamar
2023-09-26[DOC] Fix link in process.cPeter Zhu
2023-09-26[DOC] Refactor doc in process.cBurdetteLamar
2023-09-15Process.warmup: invoke `malloc_trim` if availableJean Boussier
Similar to releasing free GC pages, releasing free malloc pages reduce the amount of page faults post fork.
2023-09-14[Bug #19868] Deprecate `Process::Status#&` and `Process::Status#>>`Nobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/8392
2023-09-14[Bug #19868] Suggest other Process::Status method for `&` and `>>`Nobuyoshi Nakada
`Process::Status#&` and `Process::Status#>>` are provided only for the backward compatibility with older Ruby than 1.8 where `$?` was a `Fixnum`, and the knowledge about internals of system dependent macros is necessary to use them. Modern programs and libraries should not need these methods. Notes: Merged: https://github.com/ruby/ruby/pull/8392
2023-09-14Negative value to Process::Status method for compatibilityNobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/8392
2023-09-12[DOC] RDoc for Process::Status (#8416)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-09-07[DOC] Fix up Process::Status#>>Nobuyoshi Nakada
2023-09-06[DOC] Rdoc for Process::Status (#8386)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-09-05[DOC] Fix for RDoc for Process.kill (#8370)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-09-05[DOC] Fix up markupNobuyoshi Nakada
2023-09-05[DOC] Fix signal listNobuyoshi Nakada
- Signal names can be symbols, as stated above. - Supported signals and those values are platform dependent. - Key sequences to send signal are configurable. - Fix description of signal 0. Co-authored-by: Peter Zhu <peter@peterzhu.ca> Notes: Merged: https://github.com/ruby/ruby/pull/8367 Merged-By: nobu <nobu@ruby-lang.org>
2023-09-04[DOC] RDoc for process.c (#8366)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-09-03[DOC] Process doc (#8363)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-09-02[DOC] RDoc for process.cBurdetteLamar
Notes: Merged: https://github.com/ruby/ruby/pull/8361
2023-09-02[DOC] RDoc for process.c (#8358)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-09-02[DOC] RDoc for process.c (#8353)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-31[DOC] RDoc for #spawn (#8342)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-31[DOC] RDoc for Kernel#system (#8309)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-29Expose `rb_process_status_wait` and hide `rb_process_status_waitv`. (#8316)Samuel Williams
Notes: Merged-By: ioquatix <samuel@codeotaku.com>
2023-08-29Validate the typed data before dereferencing the internal struct. (#8315)Samuel Williams
Notes: Merged-By: ioquatix <samuel@codeotaku.com>
2023-08-27[DOC] More on method exec (#8302)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-27Free all empty heap pages in Process.warmupPeter Zhu
This commit adds `free_empty_pages` which frees all empty heap pages and moves the number of pages freed to the allocatable pages counter. This is used in Process.warmup to improve performance because page invalidation from copy-on-write is slower than allocating a new page. Notes: Merged: https://github.com/ruby/ruby/pull/8257
2023-08-24[DOC] RDoc for Process (#8282)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-24[DOC] Process doc (#8279)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-24Fix compile error on older systems without clock_get*Bo Anderson
Notes: Merged: https://github.com/ruby/ruby/pull/8256
2023-08-23[DOC] RDoc for Process (#8253)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-07[DOC] RDoc for Process (#8179)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-07-31RDoc for module Process (#8141)Burdette Lamar
Notes: Merged-By: peterzhu2118 <peter@peterzhu.ca>
2023-08-01[DOC] Update description of `Process.daemon` argumentsNobuyoshi Nakada
These arguments can only be `true` or `false` now. Also add markups.
2023-07-26Process.warmup: precompute strings coderangeJean Boussier
This both save time for when it will be eventually needed, and avoid mutating heap pages after a potential fork. Instrumenting some large Rails app, I've witnessed up to 58% of String instances having their coderange still unknown. Notes: Merged: https://github.com/ruby/ruby/pull/8112
2023-07-17Implement Process.warmupJean Boussier
[Feature #18885] For now, the optimizations performed are: - Run a major GC - Compact the heap - Promote all surviving objects to oldgen Other optimizations may follow. Notes: Merged: https://github.com/ruby/ruby/pull/7662
2023-07-10Use `File::NULL` instead of hard coded null device namesNobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/8050
2023-06-01Hide the usage of `rb_io_t` where possible. (#7880)Samuel Williams
This retries the compatible parts of the previously reverted PR so we can continue to update related code without breaking backwards compatibility. Notes: Merged-By: ioquatix <samuel@codeotaku.com>
2023-06-01Revert "Hide most of the implementation of `struct rb_io`. (#6511)"NARUSE, Yui
This reverts commit 18e55fc1e1ec20e8f3166e3059e76c885fc9f8f2. fix [Bug #19704] https://bugs.ruby-lang.org/issues/19704 This breaks compatibility for extension libraries. Such changes need a discussion.
2023-05-30Hide most of the implementation of `struct rb_io`. (#6511)Samuel Williams
* Add rb_io_path and rb_io_open_descriptor. * Use rb_io_open_descriptor to create PTY objects * Rename FMODE_PREP -> FMODE_EXTERNAL and expose it FMODE_PREP I believe refers to the concept of a "pre-prepared" file, but FMODE_EXTERNAL is clearer about what the file descriptor represents and aligns with language in the IO::Buffer module. * Ensure that rb_io_open_descriptor closes the FD if it fails If FMODE_EXTERNAL is not set, then it's guaranteed that Ruby will be responsible for closing your file, eventually, if you pass it to rb_io_open_descriptor, even if it raises an exception. * Rename IS_EXTERNAL_FD -> RUBY_IO_EXTERNAL_P * Expose `rb_io_closed_p`. * Add `rb_io_mode` to get IO mode. --------- Co-authored-by: KJ Tsanaktsidis <ktsanaktsidis@zendesk.com> Notes: Merged-By: ioquatix <samuel@codeotaku.com>
2023-05-21Put `rb_fork` back into process.cNobuyoshi Nakada
Now, calling `rb_fork` directly breaks the PID cache and the timer thread, so must use `rb_fork_ruby` or similar instead. Notes: Merged: https://github.com/ruby/ruby/pull/7834
2023-04-13[Feature #19590] Show the invalid clock argumentNobuyoshi Nakada
Include the failed clock argument in the error message from `Process.clock_gettime` and `Process.clock_getres`. Notes: Merged: https://github.com/ruby/ruby/pull/7687
2023-04-05[DOC] Clarify behavior of abort() with no argumentDaniel DeLorme
Since Ruby 2.7 it prints the message and backtrace of $! Fixes [Bug #19578] Notes: Merged: https://github.com/ruby/ruby/pull/7664
2023-04-04Revert "Fix transient heap mode"Aaron Patterson
This reverts commit 87253d047ce35e7836b6f97edbb4f819879a3b25. Revert "Implement `Process.warmup`" This reverts commit ba6ccd871442f55080bffd53e33678c0726787d2.
2023-04-04Implement `Process.warmup`Jean Boussier
[Feature #18885] For now, the optimizations performed are: - Run a major GC - Compact the heap - Promote all surviving objects to oldgen Other optimizations may follow. Notes: Merged: https://github.com/ruby/ruby/pull/7346
2023-04-04PID cache is never cleared where `fork` is not usedNobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/7649
2023-03-24Cache pid itself instead of converted VALUENobuyoshi Nakada
Notes: Merged: https://github.com/ruby/ruby/pull/7585
2023-03-23thread_pthread.c: Use a `fork_gen` to protect against fork instead of getpid()Jean Boussier
[Feature #19443] Until recently most libc would cache `getpid()` so this was a cheap check to make. However as of glibc version 2.25 the PID cache is removed and calls to getpid() always invoke the actual system call which significantly degrades the performance of existing applications. The reason glibc removed the cache is that some libraries were bypassing fork(2) by issuing system calls themselves, causing stale cache issues. That isn't a concern for Ruby as bypassing MRI's primitive for forking would render the VM unusable, so we can safely cache the PID. Notes: Merged: https://github.com/ruby/ruby/pull/7434