Re: SEGV in in lua_resume after lua_yield from hook.
- From: Mike Pall <mikelj-2203@xxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Thu, 31 Mar 2022 17:17:49 +0200
Theo Schlossnagle wrote:
I have a (rather large) luajit runtime (on x86_64) and we implement
preempting by using timers on Linux to singal and lua_sethook with a count
of 1.
Since XmiliaH tried for a repro (thanks!) in
https://github.com/LuaJIT/LuaJIT/issues/824
and was unaware of the precise restrictions for lua_sethook(),
I'll leave this here as well:
lua_sethook() (only when SETTING a count hook) is signal-safe, but NOT
thread-safe.
Your description sounds like you're aware of that. But please
double-check that the signal handler is called on the exact same
thread which is currently executing Lua code.
--Mike
Other related posts:
