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From: Konstantin Osipov <kostja@tarantool.org>
To: tarantool-patches@freelists.org
Cc: Georgy Kirichenko <georgy@tarantool.org>
Subject: [tarantool-patches] Re: [PATCH 2/3] Proper unwind for currently executing fiber
Date: Fri, 5 Oct 2018 01:27:37 +0300	[thread overview]
Message-ID: <20181004222737.GN22855@chai> (raw)
In-Reply-To: <3bf7292e6ae0c5b7b892c204457c630c73bd8108.1538638419.git.georgy@tarantool.org>

* Georgy Kirichenko <georgy@tarantool.org> [18/10/04 13:34]:
> Each yielded fiber has a preserved coro state stored in a corresponding
> variable however an executing fiber has a volatile state placed in CPU
> registers (stack pointer, instruction pointer and non-volatile registers)
> and corresponding context-storing variable value is invalid.
> For already yielded fiber we have to use a special asm-written handler to make
> a temporary switch to the preserved state and capture executing context what
> is not needed for executing fiber.
> After the patch for the executing fiber NULL is passed to the backtrace
> function as coro context and then backtrace function could decide should
> it use special context-switching handler or might just use unw_getcontext
> from the unwind library.

OK to push.

-- 
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.io - www.twitter.com/kostja_osipov

  reply	other threads:[~2018-10-04 22:27 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-21 13:20 [tarantool-patches] [PATCH 0/3] Dump lua frames for a fiber traceback Georgy Kirichenko
2018-09-21 13:20 ` [tarantool-patches] [PATCH 1/3] Set a lua state for the main fiber too Georgy Kirichenko
2018-09-25 23:27   ` [tarantool-patches] " Konstantin Osipov
2018-10-05 15:04   ` [tarantool-patches] " Vladimir Davydov
2018-09-21 13:20 ` [tarantool-patches] [PATCH 2/3] Proper unwind for currently executing fiber Georgy Kirichenko
2018-09-25 23:34   ` [tarantool-patches] " Konstantin Osipov
2018-09-26  6:57     ` Georgy Kirichenko
2018-09-26 17:36       ` Konstantin Osipov
2018-10-04  7:44         ` [tarantool-patches] " Georgy Kirichenko
2018-10-04 22:27           ` Konstantin Osipov [this message]
2018-10-05 15:09           ` Vladimir Davydov
2018-09-21 13:20 ` [tarantool-patches] [PATCH 3/3] Show names of Lua functions in backtraces Georgy Kirichenko
2018-09-25 23:38   ` [tarantool-patches] " Konstantin Osipov
2018-10-04  7:55     ` [tarantool-patches] " Georgy Kirichenko
2018-10-04 22:28       ` [tarantool-patches] " Konstantin Osipov
2018-10-05 17:49       ` [tarantool-patches] " Vladimir Davydov

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