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Confirm whether SetMaxThreads() call is necessary #168

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@tameware

Per tzimnoch
examples/calc_dd_table_pbn.cpp
Comment on lines +30 to 32
#if defined(__linux) || defined(APPLE) || defined(WASM)
SetMaxThreads(0);
#endif

(#163 (comment))
Out of scope for this PR, but I noticed this in the 2.9.0 version of DDS as well and compensated by calling SetMaxThreads(1) from javascript on the wasm instance after loading it. I can verify whether SetMaxThreads(0) has the same effect.

I feel this is something the library should handle during its initialization. As it stands, failing to call this function before any solve function causes the dds library to crash.

doc/DLL-dds_x.htm has this to say about it currently:

The number of threads can be influenced by calling SetMaxThreads.
This function should probably always be called on Linux/Mac, with a zero argument for auto-configuration.
and

Calling SetMaxThreads is optional, not mandatory.
DDS will always select a suitable number of threads on its own.
I have not found this to be true, at least not for wasm binary. It appears to be required to prevent wasm binary from crashing.

(#163 (comment))

It is possible this was fixed between 2.9.0 and 3.0.0. I have not re-verified, but the inclusion of the call here leads me to believe it's still an issue.

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