GDB made easy
2022-06-14
gdbgui
Pros:
- can debug from remote Web UI
Cons
- can not copy/paste in the terminal of Web UI
install
pip install gdbgui
pip install werkzeug==2.0.0
run
gdbgui -r --host 0.0.0.0 -g "sudo gdb -p $(pgrep mysqld-debug) -x ./gdb.init"
open
GDB dashboard
Pros:
- clean terminal GUI
Just a gdb init file with Python script.
Remember append config file in /root/.gdbinit if we use gdb to attach a process.
VSCode + GDB
Pros:
- integation with IDE, nice experiment when debugging step by step(Just like VisualStudio).
- still can use gdb command directly.
- remote debug (TBC).
Cons:
- must append
-execperfix for each command indebug console - must input password even with sudo when attaching
- breakpoints in UI not synced with the ones created in debug console
Install
need install an extension first https://marketplace.visualstudio.com/items?itemName=rioj7.command-variable
Attach script(launch.json):
{
"version": "0.2.0",
"configurations": [
{
"name": "gdb - Attach to process",
"type": "cppdbg",
"request": "attach",
"MIMode": "gdb",
"program": "/home/poweruser/code/mysql-57-bld/sql/mysqld",
"processId": "${input:readPID}",
"setupCommands": [
{
"description": "Enable pretty-printing for gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true,
"set follow-fork-mode": "child"
}
],
}
],
"inputs": [
{
"id": "readPID",
"type": "command",
"command": "extension.commandvariable.file.content",
"args": {
"fileName": "/home/poweruser/sandboxes/dev_5_7_37/data/mysql_sandbox5737.pid"
}
}
]
}
other options:
1. "procreessId": "${command:pickProcess}",
2. "preLaunchTask": "writePID", # need to define pre-launch task in task.json