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Debugging with MacOS

System dependencies​

  • Catalina+
  • LLDB 11.0+ (Xcode self-contained)
  • GDB 10.2 (by andb-gdb)

Debugging with XCode's built-in lldb​

The lldb that comes with xcode can be installed, no additional installation is required.

Debug with precompiled andb-gdb​

The default gdb in the brew repository is only suitable for the Corefile of the MacOS platform. To debug the Corefile of the Linux platform, you need to recompile, or use the andb precompiled version. andb-gdb is a multi-platform precompiled gdb tool, the current version is 10.2.

$git clone git@github.com:noslate-project/andb-gdb.git

# Also need to add the gdb environment variable
$cd andb-gdb
$source env.sh
x86_64-Darwin

Configuration tool​

Clone the andb repository

git clone git@github.com:noslate-project/andb.git

Add the andb environment variable

$cd andb
$source env.sh
andb loader enabled, please use 'andb' command to start debugging.

Use andb to check the paths used

[zlei@IntelMac andb]$ andb
/Users/zlei/demo/andb/loader

General debugging​

Debug with gdb and load the core.pid file.

andb -l -c core.pid

Debug with lldb and load the core.pid file.

andb -g -c core.<pid>

Manual tuning method​

When debugging core files of unofficial distributions, manual debugging methods are required. At this time, the following files need to be prepared and placed in the same directory.

  • Companion binaries, such as node, must be paired with the core.pid file.
  • The supporting node.typ file can also directly use the same version of the node.typ file as the official release.
  • core.pid file
# debug with gdb
andb -g node -c core.pid

# or debug with lldb
andb -l node -c core.pid