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2015-01-06T03:55:19Z akkad: how do we get what is required for a PR from ldb> ?
2015-01-06T03:56:04Z nyef: How'd you get to LDB in the first place?
2015-01-06T03:56:24Z akkad: derp.lisp
2015-01-06T03:56:51Z akkad: I called (bug-no-one-has-fixed)
2015-01-06T03:57:37Z akkad: 100 threads reading in gzipped json, parsing it, doing dns lookups on ips in the logs and then gzip each string and use cl-store to save it
2015-01-06T03:57:55Z nyef: Ah. I have no idea what would be useful to do at that point.
2015-01-06T03:58:03Z akkad: https://gist.github.com/738c6247805ee75d7f41
2015-01-06T03:58:33Z akkad: backtrace + registers?
2015-01-06T03:59:43Z nyef: That might help.
2015-01-06T03:59:48Z nyef: It's odd that it's in the compiler...
2015-01-06T04:00:28Z akkad: https://gist.github.com/00ade92ecbfedc190add full dump
2015-01-06T04:01:36Z Bicyclidine: It's in the compiler from a method call? Nice.
2015-01-06T04:01:40Z nyef: ... You're obviously on x86-64, which has some implications as far as inter-thread synchronization...
2015-01-06T04:02:36Z akkad: lw has some issues too
2015-01-06T04:02:43Z nyef: What host OS are you on?
2015-01-06T04:03:08Z akkad: osx
2015-01-06T04:03:11Z akkad: 1.2.2
2015-01-06T04:03:15Z nyef: Hrm.
2015-01-06T04:03:31Z nyef: Okay, THAT'S a possible thread issue right there.
2015-01-06T04:03:42Z akkad: ffi?
2015-01-06T04:04:14Z nyef: See if (setf (extern-alien "continue_after_memoryfault_on_unprotected_pages" boolean) t) or similar prevents it from losing?
2015-01-06T04:04:32Z akkad: k
2015-01-06T04:04:53Z nyef: No, OSX has always been... iffy with respect to signal handling, threads, panicking the kernel from user space, stuff like that.
2015-01-06T04:05:06Z akkad: yeah typical bsd stuff :P
2015-01-06T04:07:40Z akkad: seems to not bomg
2015-01-06T04:07:50Z akkad: bomb. Faults still generating, but no llb
2015-01-06T04:07:53Z akkad: ldb
2015-01-06T04:08:12Z nyef: So the next one is "ignore_memoryfaults_on_unprotected_pages".
2015-01-06T04:08:19Z nyef: That one shuts up the error message.
2015-01-06T04:08:40Z nyef: That said, having a way to reproduce this would be good, so we can track it down.
2015-01-06T04:08:41Z akkad: but then sbcl would work, and be faster than LW, thus making feel bad for paying for LW
2015-01-06T04:08:44Z akkad: ok thanks
2015-01-06T04:08:58Z akkad: b
2015-01-06T04:09:42Z nyef: This is actually fairly well documented in a couple of comments in gencgc.c.
2015-01-06T04:10:32Z akkad: will have to check it out
2015-01-06T04:11:02Z nyef: This is weird, the relevant code branch is supposed to be protected by a mutex.
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2015-01-06T05:25:58Z pkhuong: you know, I'm not sure mach offers the ordering guarantees that we need re signals
2015-01-06T05:26:42Z pkhuong: perhaps we should pump the event loop some time around stop/start the worl
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2015-01-06T23:40:31Z snuglas: Please somebody review this before I bork it again: ";;; this use of 'rcx' is as the temporary register for performing a reference to foreign data with dynamic core. It has to be a register that conflicts with 'arg' lest we clobber the arg."
2015-01-06T23:40:47Z snuglas: and change 'rdx' to 'rcx': (emit-foreign-logbitp 23 "cpuid_fn1_ecx" rcx)
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