Add perf counter data to GetStrongRandBytes state in scheduler #10372

 225 | +        hasher.Write((const unsigned char*)&nPerfCounter2, sizeof(nPerfCounter2));
 226 | +        hasher.Finalize(buf);
 227 | +        memcpy(rng_state, buf + 32, 32);
 228 | +    }
 229 | +    memory_cleanse((void*)&nPerfCounter1, sizeof(nPerfCounter1));
 230 | +    memory_cleanse((void*)&nPerfCounter2, sizeof(nPerfCounter2));

---

  23 | @@ -24,6 +24,13 @@ int GetRandInt(int nMax);
  24 |  uint256 GetRandHash();
  25 |  
  26 |  /**
  27 | + * Add a little bit of randomness to the output of GetStrongRangBytes.
  28 | + * This sleeps for a millisecond, so should only be called when there is
  29 | + * no other work to be done.
  30 | + */
  31 | +void RandAddSeedSleep();

---

 215 | +
 216 | +    unsigned char buf[64];
 217 | +    CSHA512 hasher;
 218 | +    // Combine with and update state
 219 | +    {
 220 | +        std::unique_lock<std::mutex> lock(cs_rng_state);

---