Remote Multithread debugging problems
From: Owen Green <hidden>
Date: 2002-08-20 14:47:03
Hi all, I`m trying to debug a multi-threaded application using gdbserver on the remote/target side and I`m having some problems, the output I got is depicted below: TARGET SIDE:(NORMAL OUTPUT) -------------------------------------------------------------------- # threadTest Break Function Reached Init.... Passed 0 times Main Thread Passed 1 times Main Thread Passed 2 times Main Thread Passed 3 times TARGET SIDE:(DEBUGGING) -------------------------------------------------------------------- # gdbserver :6666 /bin/threadTest Process /bin/threadTest created; pid = 32 Remote debugging from host 192.168.0.155 Break Function Reached Init.... Passed 0 times GDB bug: target.c (target_signal_from_host): unrecognized real-time signal Passed 1 times Passed 2 times Passed 3 times Passed 4 times HOST SIDE: -------------------------------------------------------------------- (gdb) target remote 192.168.0.238:6666 0x30012f40 in ?? () (gdb) add-symbol-file /usr/src/threadTest 0x30012f40 add symbol table from file "/usr/src/threadTest" at .text_addr = 0x30012f40 (gdb) b funcToBreak Breakpoint 1 at 0x300131b8: file threadTest.c, line 42. (gdb) b main Breakpoint 2 at 0x30013130: file threadTest.c, line 22. (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) next (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) next (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c Breakpoint 1, funcToBreak () at threadTest.c:42 (gdb) c --------------------------------------------------------------------- Note that till the last continue, nothing have been written on the target`s console, it seems like gdb and gdbserver are having problems and do restart the application several times... and finally the main thread is killed(!?). And if I try info threads, I got this: (gdb) info threads warning: RMT ERROR : failed to get remote thread list I`m using gdbserver5.2.1 (I tried the one from HHL-2.0 Journeyman and didn`t worked too) compiled by myself using Mvista HHL 2.0 tools and gdb 5.2.1 on my i386. Am I doing something wrong or remote thread debugging is not supported by gdb? I have read something about problems with multi-thread application debugging but I thought that it may be OK at this time... Could someone explain to me what`s happening? I`ve attached de source of threadTest application on this mail... Any comment, insight and/or help will be very appreciate, thanks in advance, Owen.
Attachments
- threadTest.c [application/octet-stream] 642 bytes · preview