[all-commits] [llvm/llvm-project] e427e9: [lldb][dap] Avoid concurrent `HandleCommand` calls...

[Jordan Rupprecht via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e427e934f677567f8184ff900cb4cbdb8cf21a21
      https://github.com/llvm/llvm-project/commit/e427e934f677567f8184ff900cb4cbdb8cf21a21
  Author: Jordan Rupprecht <rupprecht at google.com>
  Date:   2024-02-27 (Tue, 27 Feb 2024)

  Changed paths:
    M lldb/test/API/tools/lldb-dap/commands/TestDAP_commands.py
    M lldb/tools/lldb-dap/LLDBUtils.cpp

  Log Message:
  -----------
  [lldb][dap] Avoid concurrent `HandleCommand` calls (#83162)

The `EventThreadFunction` can end up calling `HandleCommand`
concurrently with the main request processing thread. The underlying API
does not appear to be thread safe, so add a narrowly scoped mutex lock
to prevent calling it in this place from more than one thread.

Fixes #81686. Prior to this, TestDAP_launch.py is 4% flaky. After, it
passes in 1000 runs.



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