public void GenerateDesiredQuantityOfRandomIntegers(string inputString, DesiredCpuUtilization desiredCpuUtilization, int desiredQuantityOfValues, BigInteger minIntValueInclusive, BigInteger maxIntValueExclusive)
{
_bagOfRandomIntegers = new ConcurrentBag <BigInteger>();
int threadUsage = ThreadUsage(desiredCpuUtilization);
ParallelOptions maxDegreeOfParallelism = new ParallelOptions {
MaxDegreeOfParallelism = threadUsage
};
int iterationsPerThread = (desiredQuantityOfValues / threadUsage) + 1;
Parallel.For(0, threadUsage, maxDegreeOfParallelism, (i) =>
{
inputString += i;
PRNG prng = new PRNG(inputString);
var listOfRandomIntegers = prng.GenerateListOfEntropyValuesBigInteger(minIntValueInclusive, maxIntValueExclusive, iterationsPerThread);
// ConcurrentBag.Concat will turn the concurrent bag into IEnumrable, therefore each byte array must be added to the bag invidually.
foreach (BigInteger randomValue in listOfRandomIntegers)
{
_bagOfRandomIntegers.Add(randomValue);
}
});
while (_bagOfRandomIntegers.Count > desiredQuantityOfValues)
{
BigInteger randomValue;
_bagOfRandomIntegers.TryTake(out randomValue);
}
}
public void GenerateDesiredQuantityOfRandom32ByteArrays(string inputString, DesiredCpuUtilization desiredCpuUtilization, int quantityOfRandom32ByteArrays)
{
_bagOfRandomBytes = new ConcurrentBag <byte[]>();
int threadUsage = ThreadUsage(desiredCpuUtilization);
ParallelOptions maxDegreeOfParallelism = new ParallelOptions {
MaxDegreeOfParallelism = threadUsage
};
int iterationsPerThread = (quantityOfRandom32ByteArrays / threadUsage) + 1;
Parallel.For(0, threadUsage, maxDegreeOfParallelism, (i, parallelLoopState) =>
{
inputString += i;
PRNG prng = new PRNG(inputString);
var listOfEntropy32ByteArrays = prng.GenerateListOf32ByteArrays(iterationsPerThread);
// ConcurrentBag.Concat will turn the concurrent bag into IEnumrable, therefore each byte array must be added to the bag invidually.
foreach (byte[] byteArray in listOfEntropy32ByteArrays)
{
_bagOfRandomBytes.Add(byteArray);
}
});
while (_bagOfRandomBytes.Count > quantityOfRandom32ByteArrays)
{
byte[] random32ByteArray;
_bagOfRandomBytes.TryTake(out random32ByteArray);
}
}
private int ThreadUsage(DesiredCpuUtilization desiredCpuUtilization)
{
int threadUsage = 1;
if (desiredCpuUtilization == DesiredCpuUtilization.AllThreads)
{
threadUsage = Environment.ProcessorCount;
}
else if (desiredCpuUtilization == DesiredCpuUtilization.HalfAvailPlusOneThread)
{
threadUsage = (Environment.ProcessorCount / 2) + 1;
}
else if (desiredCpuUtilization == DesiredCpuUtilization.HalfAvailThreads)
{
threadUsage = (Environment.ProcessorCount / 2);
}
else if (desiredCpuUtilization == DesiredCpuUtilization.SingleThread)
{
threadUsage = 1;
}
return(threadUsage);
}