After long-long debugging I found out that lldb-mi can't successfully launch a process since sometimes it isn't connected with something(I don't know what is it). I found out that it fails after `if (IsConnected())` from `GDBRemoteCommunication::SendPacketNoLock(llvm::StringRef payload)`.
Do you have any thoughts about this? On Tue, Aug 14, 2018 at 10:35 PM Adrian Prantl <apra...@apple.com> wrote: > > > On Aug 14, 2018, at 12:11 PM, Александр Поляков <polyakov....@gmail.com> > wrote: > > It seems that the real problem is that sometimes lldb-mi can't launch a > process: > > build/bin/lldb-mi --synchronous a.out < > llvm/tools/lldb/lit/tools/lldb-mi/exec/exec-step-instruction.test > (gdb) > -file-exec-and-symbols "a.out" > ^done > (gdb) > ^done > (gdb) > > =library-loaded,id="/home/alexander/workspace/gsoc/a.out",target-name="/home/alexander/workspace/gsoc/a.out",host-name="/home/alexander/workspace/gsoc/a.out",symbols-loaded="0",loaded_addr="-",size="0" > ^done > (gdb) > ^done > (gdb) > ^done > (gdb) > ^done > (gdb) > ^done > (gdb) > ^done > (gdb) > ^done > (gdb) > > ^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x00000000004004df",func="main",file="main.c",fullname="/home/alexander/workspace/gsoc/llvm/tools/lldb/lit/tools/lldb-mi/exec/inputs/main.c",line="6",times="0",original-location="main"} > (gdb) > > =breakpoint-modified,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x00000000004004df",func="main",file="main.c",fullname="/home/alexander/workspace/gsoc/llvm/tools/lldb/lit/tools/lldb-mi/exec/inputs/main.c",line="6",times="0",original-location="main"} > (gdb) > ^done > (gdb) > ^error,msg="process launch failed: 'A' packet returned an error: -1" > > > Do you think you might be able to improve the error message here and get > at the underlying failure? > > -- adrian > > (gdb) > ^done > (gdb) > ^done > (gdb) > ^error,msg="Command 'exec-step-instruction'. Thread ID invalid" > (gdb) > ^done > (gdb) > ^done > (gdb) > ^error,msg="Command 'exec-next-instruction'. Thread ID invalid" > (gdb) > ^done > (gdb) > ^done > (gdb) > ^error,msg="this SBThread object is invalid" > (gdb) > ^done > (gdb) > ^done > (gdb) > ^done > (gdb) > > exec-run executes fine in synchronous mode(the only bad thing here is that > lldb-mi doesn't react to any external events like SIGSTOP - ctrl+C, while > lldb does). All previous logs were made in asynchronous mode and are wrong. > > On Tue, Aug 14, 2018 at 2:36 AM Adrian Prantl <apra...@apple.com> wrote: > >> >> >> On Aug 13, 2018, at 4:19 PM, Александр Поляков <polyakov....@gmail.com> >> wrote: >> >> Yes, I do, I'm able to pass any command to lldb-mi before the breakpoint >> is hit. I guess that making exec-run to block the control until the process >> stops might be the solution we are looking for. >> >> >> Right. I believe that it should (in synchronous mode) behave like "run" >> in the normal lldb command interpreter and block until the process has >> stopped. You could look at differences in the implementation of -exec-run >> and "run" in the command interpreter first. >> >> -- adrian >> >> > > -- > Alexander > > > -- Alexander
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