ruby-dev

とみたです。

Ruby でスレッドを生成すると SIGVTALRM が 10ms 毎に通知されて、それで
Ruby スレッドのコンテキストスイッチが制御されていると思うのですが（処理
系によるかも）、C で書かれた Ruby の拡張ライブラリに制御が移っても
SIGVTALRM は通知され続けますよね。

拡張ライブラリ内で SIGVTALRM があがると困るような場合は、拡張ライブラリ
側で rb_thread_stop_timer() と rb_thread_start_timer() で処理を括るとか、
SIGVTALRM をブロックするとかして対処しないといけないのでしょうか。

今までそのような認識は無かったのですが、 Solaris10 上の MySQL/Ruby 実行
中に poll() が SIGVTALRM で EINTR になって失敗するという事象があったと
いう連絡を受けたので、どうしたものかと…。

この辺について対処しているライブラリを見たこと無いのですが、どうするの
が正しいのでしょうか。

-- 
とみたまさひろ <tommy@tmtm.org>
3469 42CC 4D32 F53C AD98  65A5 8C37 FF09 69C1 6040

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[#31690] m17n questions — SASADA Koichi <ko1@...>

[#31692] cannot run test-all — "U.Nakamura" <usa@...>

[#31697] Re: [ruby-list:43970] 次の1.8.6 — Tadayoshi Funaba <tadf@...>

[#31698] Re: [ruby-cvs:20568] Ruby:r13331 (trunk): * eval_jump.ci (rb_f_catch): generate new tag object if no argument is — "U.Nakamura" <usa@...>

[#31702] [ANN] Rubyロゴコンテスト — Shugo Maeda <shugo@...>

[#31709] [BUG] non-initialized struct — Tanaka Akira <akr@...>

[#31710] optimize range space — Tanaka Akira <akr@...>

[#31715] string literal encoding — Nobuyoshi Nakada <nobu@...>

[#31729] packed st_table — Nobuyoshi Nakada <nobu@...>

[#31731] ordered/unordered st_table — Nobuyoshi Nakada <nobu@...>

[#31734] [m17n] String#chop & String#succ — Nobuyoshi Nakada <nobu@...>

[#31736] integer overflow in Array#[] — sheepman <sheepman@...>

[#31737] integer overflow in Array#[]= — sheepman <sheepman@...>

[#31738] integer overflow in Array#fill — sheepman <sheepman@...>

[#31739] integer overflow in String#[]= — sheepman <sheepman@...>

[#31740] FileTest.identical? with IO — sheepman <sheepman@...>

[#31743] deprecating RUBY_VERSION_CODE — Nobuyoshi Nakada <nobu@...>

[#31744] [m17n] String#encode — Nobuyoshi Nakada <nobu@...>

[#31748] typo at Array#cycle documentation — Yugui <yugui@...>

[#31754] Re: [ruby-cvs:20585] Ruby:r13348 (trunk): * array.c (rb_ary_cycle): typo in rdoc. a patch from Yugui — "U.Nakamura" <usa@...>

[#31759] SEGV by modifying __members__ — Tanaka Akira <akr@...>

[#31763] integer overflow in Range#step — sheepman <sheepman@...>

[#31768] shellescape — "Akinori MUSHA" <knu@...>

[#31774] RSTRING(value)->ptr == NULL ? — Tietew <tietew+ruby-dev@...>

[#31775] 1.9 on OpenBSD — SASADA Koichi <ko1@...>

[#31780] "string"[/str/]=:not_string dumps core — Nobuyoshi Nakada <nobu@...>

[#31781] `scan': character encodings differ (ArgumentError) — Kouhei Sutou <kou@...>

[#31786] rstripがstripしすぎる — Kouhei Sutou <kou@...>

[#31787] 文字列のinspect — eklerni <eklerni@...>

[#31798] generator from Enumerable#map — "Yusuke ENDOH" <mame@...>

[#31799] weakref.rbにデバッグ用print — "madoka yamamoto" <yamamotomadoka@...>

[#31802] hash value of { n => n } — "Yusuke ENDOH" <mame@...>

[#31804] TYPE(cl) in rb_obj_is_kind_of — Tanaka Akira <akr@...>

[#31806] rb_str_substr is much slower than rb_str_subpat — Nobuyoshi Nakada <nobu@...>

[#31810] rb_obj_is_kind_of — Tanaka Akira <akr@...>

[#31815] 文字列の式展開 — eklerni <eklerni@...>

[#31816] SEGV by removing undefined method — Tanaka Akira <akr@...>

[#31817] removing undefined method on 1.8 — Tanaka Akira <akr@...>

[#31818] SEGV by attr — Tanaka Akira <akr@...>

[#31819] rb_clear_cache_by_class — Tanaka Akira <akr@...>

[#31820] valgrind set_trace_func — Tanaka Akira <akr@...>

[#31821] unsubscribe — "Angadpreet Chadha" <angadsc@...>

[#31831] trunk で現状セルフビルドができません — "きむらこういち" <hogemuta@...>

[#31835] Kernel#` is blocked with Ruby/GLib2 on Intel Mac — Kouhei Sutou <kou@...>

[#31840] valgrind fiber — Tanaka Akira <akr@...>

[#31842] 拡張ライブラリ内での SIGVTALRM — とみたまさひろ <tommy@...>

[#31848] huge `if' dumps core — "Yusuke ENDOH" <mame@...>

[#31849] Exception `ArgumentError' at (null):0 - NULL pointer given — Tanaka Akira <akr@...>

[#31850] meta programming might dump core — "Yusuke ENDOH" <mame@...>

[#31852] Re: [ ruby-Bugs-14195 ] Array instance method include? speed can be increased — Urabe Shyouhei <shyouhei@...>

[#31853] optimize T_OBJECT space — Tanaka Akira <akr@...>

[#31854] Symbol.all_symbols — eklerni <eklerni@...>

[#31866] reading a pipe by multiple threads — Tanaka Akira <akr@...>

[#31870] marshal_dumpで不正なデータが書き出される — kumaryu <kumaryu@...>

[#31871] Process::WNOHANG — Tanaka Akira <akr@...>

[#31887] ruby 1.9 で ruby 1.9 はコンパイルできなかった — Martin Duerst <duerst@...>

[#31896] URI::LDAPS — Kouhei Sutou <kou@...>

[#31898] memory consumption on ext/dl build — Tanaka Akira <akr@...>

[#31900] platform-independent per-process initialization — Nobuyoshi Nakada <nobu@...>

[#31909] ipaddr — Kazuhiro NISHIYAMA <zn@...>

[#31911] eval("", TOPLEVEL_BINDING) and ObjectSpace._id2ref — Tanaka Akira <akr@...>

[#31912] exit status of ruby -v — Tanaka Akira <akr@...>

[#31913] SEGV: Fiber.new{ callcc{|c| @c = c } }.resume — Tanaka Akira <akr@...>

[#31914] m17nの全貌に関する何か — Masayoshi Takahashi <maki@...>

[ruby-dev:31842] 拡張ライブラリ内での SIGVTALRM

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[#31759] SEGV by modifying members — Tanaka Akira <akr@...>