Came from a Windows world thought this is trivial to do. Thanks for the explanation.
On Fri, Jul 31, 2015 at 4:34 PM, Jim Ingham <jing...@apple.com> wrote: > lldb doesn't attempt to generate thread creation & destruction events at > present. If it did there would be a "threadCreated" event on the process, > but as you see there isn't... > > There was some discussion about this a little while ago on the list. > IMHBSEO the debugger should interfere with the running of a program as > little as possible when the target is just running flat out. So I wouldn't > want lldb to watch thread creation and destruction by default, since you > will end up starting and stopping the target much more often for > information that in general you don't want to see. > > But it would be fine to add a setting that you could turn on in lldb to > try to catch thread create/destroy. For extra credit, you could flip this > on when somebody signs up for the thread creation events we would vend. > > Anyway, IIUC gathering these events would be easy to do on Linux, since > you already have to be notified of new thread creation so you can attach to > them. > > On OS X it would be trickier. There is no kernel level notification of > thread creation or destruction. You could get thread creation by breaking > on the couple of functions OS X always uses to start up new threads. > Getting destruction would be trickier since you'd have put a breakpoint in > the thread create function on the return from the thread body function. > That would probably be easy to tell by eyeballing the function's > disassembly, but might be harder to determine programmatically. > > Feel free to file a bug or even better provide a patch if this is > something you really need. > > Jim > > > On Jul 31, 2015, at 3:13 PM, Jeffrey Tan <jeffrey.fu...@gmail.com> > wrote: > > > > How to receive thread create/destroy events from LLDB? I did not find a > broadcast bit from SBTarget or SBProcess or SBThread. I have enabled both > SBProcess.eBroadcastBitStateChanged and > SBTarget.eBroadcastBitBreakpointChanged, but still did not retrieve any > thread create/destroy event via SBThread.EventIsThreadEvent(). > > > > I know I can query for all threads while process is paused but thread > can be create/destroy in run mode so it is important/useful for debugger > client to receive this kind of notification. > > _______________________________________________ > > lldb-dev mailing list > > lldb-dev@cs.uiuc.edu > > http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev > >
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