Hybrid modexp method#2

[justalittlenoob]

No description provided.

[skmono]

@justalittlenoob We might need a dedicated thread manager, that is initialized when IPCL library is called, which essentially generates a few "worker" threads - 1 for QATmodExp, a few (or maybe one) for IPPmodExp

Essentially the main thread and the workers will be inactive, with std::condition_variable where:
main thread - when modexp is needed, wake up the workers to standby. Start distributing batches of base/exponent/mod to workers)
workers - receive batch, change status to busy, perform modexp, release and return

What do you think?

[mosesojero]

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