>>> ということは危ないのは RUBY_VM_SET_INTERRUPT() がロストしたときに、タイムアウトなしの >>> スリープをしていて、vm->running_thread にならないから、タイマースレッドに >>> 起こして貰えないケースでしょうか？ >> >> ちょっとその例が具体的にぱっとわからないのですが，th->interrupt_flag >> を監視している，前のメールで出してもらった例は危険そうです．危険そう，と >> 思うのだけど，本当に危険なのかは実は自身が無いのですが． > > じゃあパッチつくるから、パッチが汚くなかったらacceptしてくださいよ。危険の > ありなしをあれこれ悩むよりも建設的です。きっと しばらく考えたところ、書き込み側で atomic ops 使えば十分という気がしてきました。 それなら、readerは速度低下０なのでパフォーマンス問題がおこりようがないし。 Linuxでしかテストしてませんが、こんなもんでどうでしょうか？ Y29tbWl0IDhlMWZkMDdlYWIwNzAyMTVlYzUyYmRkZTNjZjNkNzdhMWQwMDQxM2UKQXV0aG9yOiBL T1NBS0kgTW90b2hpcm8gPGtvc2FraS5tb3RvaGlyb0BnbWFpbC5jb20+CkRhdGU6ICAgV2VkIE1h eSAxMSAyMjoxOTo1MSAyMDExICswOTAwCgogICAgaW50ZXJydXB0IGZsYWcKICAgIAogICAgU2ln bmVkLW9mZi1ieTogS09TQUtJIE1vdG9oaXJvIDxrb3Nha2kubW90b2hpcm9AZ21haWwuY29tPgot LS0KIGF0b21pYy5oICB8ICAgMzUgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysK IHNpZ25hbC5jICB8ICAgMzYgKysrKysrKysrLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tCiB0 aHJlYWQuYyAgfCAgICA5ICsrKysrLS0tLQogdm1fY29yZS5oIHwgICAgOSArKysrKy0tLS0KIDQg 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