I'm working on plumbing the existing non-stop mode switch (target.non-stop-mode) to lldb-mi, to give Eclipse access to non-stop mode.
The remote OS is very thread-heavy, and the remote stub doesn't limit the debugger to the current process - because there isn't one, from the stub's point of view. Just a collection of threads. In all-stop mode, if a 2nd thread hits a breakpoint, it will send back a 2nd stop reply, which confuses lldb (rightly so). In non-stop mode, it handles things correctly. So we'll just have to live with the possible missed breakpoint issue. -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project > -----Original Message----- > From: jing...@apple.com [mailto:jing...@apple.com] > Sent: Friday, February 03, 2017 10:58 AM > To: Greg Clayton <gclay...@apple.com> > Cc: Ted Woodward <ted.woodw...@codeaurora.org>; LLDB <lldb- > d...@lists.llvm.org> > Subject: Re: [lldb-dev] non-stop mode with lldb-mi? > > > > On Feb 3, 2017, at 8:45 AM, Greg Clayton via lldb-dev <lldb- > d...@lists.llvm.org> wrote: > > > > Non-stop mode is a huge change to the core of LLDB isn’t it. I think you > might think this is easier than it actually is to enable in LLDB? > > > > Is non-stop mode where you can leave some threads running while others > are stopped? The biggest issue with this is to do it right we need to be able > to > emulate instructions so that if 3 threads hit breakpoints, we would need to > emulate the instruction that used to be at the breakpoint in LLDB since we > can’t remove the breakpoint (unless you stop the other threads which > defeats the purpose of non-stop mode) without the other 2 threads possibly > missing the breakpoint while you disable breakpoint, single step, enable > breakpoint. > > That is just one of the many things that will have to be changed to support > non-stop mode. For now, non-stop mode is only likely to work reliably if the > threads you are allowing to run never stop - hit breakpoints, crash or > whatever - so worrying about missing breakpoints is a second order problem. > > Anyway, even as it is it has some utility - presumably you're using it because > you have some threads in your program that can't stop, so you're not likely to > want them to hit breakpoints anyway... But the current help text for the > non-stop setting should probably include some appropriate caveats. > > Jim > > > > > > Greg > > > >> On Feb 3, 2017, at 7:54 AM, Ted Woodward via lldb-dev <lldb- > d...@lists.llvm.org> wrote: > >> > >> That turns on and off async, but not non-stop. > >> > >> I’m working on adding support for –gdb-set and –gdb-show non-stop, > and will post my changes on phabricator when I’m done. > >> > >> -- > >> Qualcomm Innovation Center, Inc. > >> The Qualcomm Innovation Center, Inc. is a member of Code Aurora > Forum, a Linux Foundation Collaborative Project > >> > >> From: Ilia K [mailto:ki.s...@gmail.com] > >> Sent: Wednesday, February 01, 2017 11:13 PM > >> To: Ted Woodward <ted.woodw...@codeaurora.org> > >> Cc: LLDB <lldb-dev@lists.llvm.org> > >> Subject: Re: [lldb-dev] non-stop mode with lldb-mi? > >> > >> Please check `-gdb-set target.async` option. Probably that's what you > need. > >> > >> On Thu, Feb 2, 2017 at 1:44 AM, Ted Woodward via lldb-dev <lldb- > d...@lists.llvm.org> wrote: > >>> Does lldb-mi support non-stop mode? > >>> > >>> If so, is there a way to set it besides “settings set target.non-stop-mode > true”? > >>> > >>> -- > >>> Qualcomm Innovation Center, Inc. > >>> The Qualcomm Innovation Center, Inc. is a member of Code Aurora > Forum, a Linux Foundation Collaborative Project > >>> > >>> > >>> _______________________________________________ > >>> lldb-dev mailing list > >>> lldb-dev@lists.llvm.org > >>> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > >>> > >> > >> > >> > >> -- > >> - Ilia > >> _______________________________________________ > >> lldb-dev mailing list > >> lldb-dev@lists.llvm.org > >> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > > > > _______________________________________________ > > lldb-dev mailing list > > lldb-dev@lists.llvm.org > > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev _______________________________________________ lldb-dev mailing list lldb-dev@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
