These tests compares performance of various aproaches for working with user data.

Execute following commands in command line

make clean
make
make run

The first test is a sum counting of character codes in string from array of strings. So there is

string[] arr=new string[100];

Each string contains 100 ASCII chars, and tested function computes sum of these chars

for(int j=0;j<arr[index].Length;j++)
  sum+=arr[index][j];

Second test encodes buffer of length 16384 with fixed xor mask.

for(int i=0;i<buffer.Length;i++)
  buffer[i]^=mask;

In results you will see execution time in milleseconds for 100K calls of the tests.

• Managed All calculations perform in managed code

• PInvoke Calculations on data perform in unmanaged code working with unmanaged data. Calls to unmanaged code are made with PInvoke mechanism

• Internal Call Calculations on data perform in unmanaged code working with MANAGED data in contrary to PInvoke. Calls to unmanaged code are made with Mono Internal Calls.