public virtual void TestChainedEstimation()
{
Random rnd = Random();
Entry first = new Entry();
try
{
while (true)
{
// Check the current memory consumption and provide the estimate.
long jvmUsed = GC.GetTotalMemory(false);
long estimated = RamUsageEstimator.SizeOf(first);
Console.WriteLine(string.Format(CultureInfo.InvariantCulture, "{0:0000000000}, {1:0000000000}", jvmUsed, estimated));
// Make a batch of objects.
for (int i = 0; i < 5000; i++)
{
first.CreateNext(new sbyte[rnd.Next(1024)]);
}
}
}
#pragma warning disable 168
catch (System.OutOfMemoryException e)
#pragma warning restore 168
{
// Release and quit.
}
}
/// <summary>
/// Return the memory usage of this class in bytes. </summary>
public long RamBytesUsed()
{
return(RamUsageEstimator.AlignObjectSize(3 * RamUsageEstimator.NUM_BYTES_OBJECT_REF + 2 * RamUsageEstimator.NUM_BYTES_INT32)
+ RamUsageEstimator.SizeOf(data)
+ positions.RamBytesUsed()
+ wordNums.RamBytesUsed());
}
public virtual void TestOverflowMaxChainLength()
{
int UPPERLIMIT = 100000;
int lower = 0;
int upper = UPPERLIMIT;
while (lower + 1 < upper)
{
int mid = (lower + upper) / 2;
try
{
ListElement first = new ListElement();
ListElement last = first;
for (int i = 0; i < mid; i++)
{
last = (last.Next = new ListElement());
}
RamUsageEstimator.SizeOf(first); // cause SOE or pass.
lower = mid;
}
#pragma warning disable 168
catch (StackOverflowException e)
#pragma warning restore 168
{
upper = mid;
}
}
if (lower + 1 < UPPERLIMIT)
{
Assert.Fail("Max object chain length till stack overflow: " + lower);
}
}
public virtual void TestSanity()
{
Assert.IsTrue(RamUsageEstimator.SizeOf("test string") > RamUsageEstimator.ShallowSizeOfInstance(typeof(string)));
Holder holder = new Holder();
holder.holder = new Holder("string2", 5000L);
Assert.IsTrue(RamUsageEstimator.SizeOf(holder) > RamUsageEstimator.ShallowSizeOfInstance(typeof(Holder)));
Assert.IsTrue(RamUsageEstimator.SizeOf(holder) > RamUsageEstimator.SizeOf(holder.holder));
Assert.IsTrue(RamUsageEstimator.ShallowSizeOfInstance(typeof(HolderSubclass)) >= RamUsageEstimator.ShallowSizeOfInstance(typeof(Holder)));
Assert.IsTrue(RamUsageEstimator.ShallowSizeOfInstance(typeof(Holder)) == RamUsageEstimator.ShallowSizeOfInstance(typeof(HolderSubclass2)));
string[] strings = new string[] { "test string", "hollow", "catchmaster" };
Assert.IsTrue(RamUsageEstimator.SizeOf(strings) > RamUsageEstimator.ShallowSizeOf(strings));
}
public virtual void TestStaticOverloads()
{
Random rnd = Random;
{
sbyte[] array = new sbyte[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
{
bool[] array = new bool[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
{
char[] array = new char[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
{
short[] array = new short[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
{
int[] array = new int[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
{
float[] array = new float[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
{
long[] array = new long[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
{
double[] array = new double[rnd.Next(1024)];
assertEquals(RamUsageEstimator.SizeOf(array), RamUsageEstimator.SizeOf((object)array));
}
}
