This is very useful, thanks for the info! On Mon, Feb 29, 2016 at 10:36 AM, Jim Ingham <jing...@apple.com> wrote:
> > On Feb 27, 2016, at 8:34 PM, Jeffrey Tan via lldb-dev < > lldb-dev@lists.llvm.org> wrote: > > Hi, > > I am trying to listen for module/symbol load/unload events and display > them in output UI so that debugger users can have a basic clue what is > debugger busy doing while launching a big executable linking many shared > libraries. > > Questions: > 1. I did not find an API to get current load/unload module during module > events. I was expecting some static API like lldb.SBModule(or > SBTarget).GetModuleFromEvent(SBEvent), but this does not exists. I tried to > treat current PC's module as loading module in module load/unload events. > But that does not work too(I think because process is not stopped in module > load/unload events). Do I miss something here? > > > From SBTarget.h: > > static uint32_t > GetNumModulesFromEvent (const lldb::SBEvent &event); > > static lldb::SBModule > GetModuleAtIndexFromEvent (const uint32_t idx, const lldb::SBEvent > &event); > > Note, you can also cause the process to stop with modules are loaded with > the setting: > > target.process.stop-on-sharedlibrary-events > > if that is more convenient for you. > > > 2. Even though "image list" shows I have around 42 modules loaded in > process, I only got two module load events. Why is that? > > > On OS X the loader loads the closure of modules for whatever it is > loading, and only stops and informs the debugger when this is all done. So > it is quite usual to see only a few load events even though many modules > get loaded. > > > > 3. Even though I added lldb.SBTarget.eBroadcastBitSymbolsLoaded, there is > no event of type eBroadcastBitSymbolsLoaded generated. Is it expected? > Apparently I have the symbols next to the binary. > > > That event gets sent when symbols are added to an already loaded module. > It is so a UI will know to refresh the backtrace, local variables, source > view, etc when code goes from having no symbols to having some symbols. > Those actions are not needed if the library & its symbols get loaded > simultaneously, so it isn’t sent in that case. > > Jim > > > > This is tested on mac OSX lldb. > > Jeffrey > _______________________________________________ > lldb-dev mailing list > lldb-dev@lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > > >
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