[drt] Only spawn new threads when distributed_ is true #6478
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Before this patch the constructor of boost::asio::thread_pool{1} created
a thread, regardless of if distributed_ was true.
Now it is wrapped in an optional so that it is only created if or when
distributed_ becomes true.
This means that OpenROAD can be initialized without spawning any new
threads (a niche usecase for sure, but useful in certain environments).
Signed-off-by: James Molloy <[email protected]>
Signed-off-by: jmolloy <[email protected]>
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Before this patch the constructor of boost::asio::thread_pool{1} created a thread, regardless of if distributed_ was true.
Now it is wrapped in an optional so that it is only created if or when distributed_ becomes true.
This means that OpenROAD can be initialized without spawning any new threads (a niche usecase for sure, but useful in certain environments).