Synchronet v3.19b-Win32 (install) has been released (Jan-2022).

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howto:gdb [2019/05/07 15:10] – [Debugging] mention "bt full" and "-ex run -args" and such digital manhowto:gdb [2021/04/02 18:33] – Instructions for collecting a quick backtrace snapshot from all running threads digital man
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 or (if debugging with a core file): or (if debugging with a core file):
   # gdb /sbbs/exec/sbbs /tmp/core.sbbs.####   # gdb /sbbs/exec/sbbs /tmp/core.sbbs.####
-or (if attaching to an existing running instance, read the pid from ''/var/run/sbbs.pid''):+or (if attaching to an existing running instance, reading the PID from ''/var/run/sbbs.pid''):
   # gdb /sbbs/exec/sbbs <pid>   # gdb /sbbs/exec/sbbs <pid>
 +or (if attaching to an existing running instance, using ''pgrep'' to determine the PID):
 +  # gdb -p $(pgrep sbbs)
  
 B. Run Synchronet non-daemonized (if no core file used): B. Run Synchronet non-daemonized (if no core file used):
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 **TIP:**\\ **TIP:**\\
 To run Synchronet (non-daemonized) directly from the GNU debugger without having to type "run" at a ''(gdb)'' prompt: To run Synchronet (non-daemonized) directly from the GNU debugger without having to type "run" at a ''(gdb)'' prompt:
-  # gdb -ex run -args sbbs -nd+  # gdb -ex run --args sbbs -nd 
 + 
 +==== Root Access ==== 
 + 
 +If the ''sbbs'' process was started as root, you may need root privileges to attached with ''gdb'': 
 + 
 +  Attaching to process 21848 
 +  ptrace: Operation not permitted. 
 +  (gdb) 
 +   
 +If you get this error, try attaching again as root (e.g. run with ''sudo gdb'').
  
 ==== Handling SIGPIPE ==== ==== Handling SIGPIPE ====
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 Alternatively, you can add the following line to your ''~/.gdbinit'' file or ''/etc/gdb/gdbinit'': Alternatively, you can add the following line to your ''~/.gdbinit'' file or ''/etc/gdb/gdbinit'':
   handle SIGPIPE nostop noprint pass   handle SIGPIPE nostop noprint pass
 +  
 +===== Thread Snapshot =====
 +
 +To attach to a running sbbs process and quickly collect a snapshot of backtraces from all running threads (remember, obtain root privileges first, e.g. with ''sudo'', if necessary):
 +  $ gdb -p $(pgrep sbbs) -batch -ex "thread apply all bt" -ex quit > sbbs_threads.txt
  
 ===== See Also ===== ===== See Also =====

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