[Lldb-commits] [PATCH] D123226: [lldb] use one shared ThreadPool and task groups

[Greg Clayton via Phabricator via lldb-commits]

clayborg requested changes to this revision.
clayborg added inline comments.
This revision now requires changes to proceed.


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Comment at: lldb/source/Core/Debugger.cpp:1969
+llvm::ThreadPool &Debugger::GetThreadPool() {
+  static llvm::ThreadPool threadpool(llvm::optimal_concurrency());
+  return threadpool;
----------------
aganea wrote:
> Ideally this should be explicitly created on the stack & passed along on the callstack or in a context, like MLIR does: https://github.com/llvm/llvm-project/blob/main/mlir/include/mlir/IR/MLIRContext.h#L48
We need one instance of the thread pool so we can't create on the stack. 

Static is not great because of the C++ global destructor chain could try and use if "main" exits and we still have threads running. I would do something like the "g_debugger_list_ptr" where you create a static variable in Debugger.cpp:105 which is a pointer, and we initialize it inside of Debugger::Initialize() like we do for "g_debugger_list_ptr". Then the thread pool will not cause shutdown crashes when "main" exits before other threads.



Repository:
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  https://reviews.llvm.org/D123226/new/

https://reviews.llvm.org/D123226