public virtual void TestBasic()
{
System.String string_Renamed = new System.Text.StringBuilder("test str").ToString();
RamUsageEstimator rue = new RamUsageEstimator();
long size = rue.EstimateRamUsage(string_Renamed);
System.Console.Out.WriteLine("size:" + size);
string_Renamed = new System.Text.StringBuilder("test strin").ToString();
size = rue.EstimateRamUsage(string_Renamed);
System.Console.Out.WriteLine("size:" + size);
Holder holder = new Holder();
holder.holder = new Holder("string2", 5000L);
size = rue.EstimateRamUsage(holder);
System.Console.Out.WriteLine("size:" + size);
System.String[] strings = new System.String[]{new System.Text.StringBuilder("test strin").ToString(), new System.Text.StringBuilder("hollow").ToString(), new System.Text.StringBuilder("catchmaster").ToString()};
size = rue.EstimateRamUsage(strings);
System.Console.Out.WriteLine("size:" + size);
}
/// <summary> If set, will be used to estimate size for all CacheEntry objects
/// dealt with.
/// </summary>
public void SetRamUsageEstimator(RamUsageEstimator r)
{
ramCalc = r;
}
public LowMemoryHandlerStatistics GetStats()
{
var cacheEntries = FieldCache_Fields.DEFAULT.GetCacheEntries();
var memorySum = cacheEntries.Sum(x =>
{
var curEstimator = new RamUsageEstimator(false);
return curEstimator.EstimateRamUsage(x);
});
return new LowMemoryHandlerStatistics
{
Name = "LuceneLowMemoryHandler",
EstimatedUsedMemory = memorySum,
Metadata = new
{
CachedEntriesAmount = cacheEntries.Length
}
};
}
public virtual void TestSimpleByteArrays()
{
object[][] all = new object[0][];
try
{
while (true)
{
// Check the current memory consumption and provide the estimate.
CauseGc();
long estimated = ShallowSizeOf(all);
if (estimated > 50 * RamUsageEstimator.ONE_MB)
{
break;
}
Console.WriteLine(string.Format(CultureInfo.InvariantCulture, "{0}\t{1}\t{2}", RamUsageEstimator.HumanReadableUnits(GC.GetTotalMemory(false)).PadLeft(10, ' '), RamUsageEstimator.HumanReadableUnits(GC.MaxGeneration).PadLeft(10, ' '), RamUsageEstimator.HumanReadableUnits(estimated).PadLeft(10, ' ')));
// Make another batch of objects.
object[] seg = new object[10000];
all = Arrays.CopyOf(all, all.Length + 1);
all[all.Length - 1] = seg;
for (int i = 0; i < seg.Length; i++)
{
seg[i] = new sbyte[Random.Next(7)];
}
}
}
#pragma warning disable 168
catch (System.OutOfMemoryException e)
#pragma warning restore 168
{
// Release and quit.
}
}
/// <summary>
/// Return the memory usage of this instance. </summary>
public long RamBytesUsed()
{
return(RamUsageEstimator.AlignObjectSize(3 * RamUsageEstimator.NUM_BYTES_OBJECT_REF) + docIDs.RamBytesUsed() + offsets.RamBytesUsed());
}
/// <summary> If set, will be used to estimate size for all CacheEntry objects
/// dealt with.
/// </summary>
public void SetRamUsageEstimator(RamUsageEstimator r)
{
ramCalc = r;
}
/// <summary> Computes (and stores) the estimated size of the cache Value </summary>
/// <seealso cref="EstimatedSize">
/// </seealso>
public virtual void EstimateSize(RamUsageEstimator ramCalc)
{
long size = ramCalc.EstimateRamUsage(Value);
EstimatedSize = RamUsageEstimator.HumanReadableUnits(size, new System.Globalization.NumberFormatInfo()); // {{Aroush-2.9}} in Java, the formater is set to "0.#", so we need to do the same in C#
}
public virtual void TestSimpleByteArrays()
{
MemoryMXBean memoryMXBean = ManagementFactory.MemoryMXBean;
object[][] all = new object[0][];
try
{
while (true)
{
// Check the current memory consumption and provide the estimate.
CauseGc();
MemoryUsage mu = memoryMXBean.HeapMemoryUsage;
long estimated = ShallowSizeOf(all);
if (estimated > 50 * RamUsageEstimator.ONE_MB)
{
break;
}
Console.WriteLine(string.format(Locale.ROOT, "%10s\t%10s\t%10s", RamUsageEstimator.humanReadableUnits(mu.Used), RamUsageEstimator.humanReadableUnits(mu.Max), RamUsageEstimator.humanReadableUnits(estimated)));
// Make another batch of objects.
object[] seg = new object[10000];
all = Arrays.copyOf(all, all.Length + 1);
all[all.Length - 1] = seg;
for (int i = 0; i < seg.Length; i++)
{
seg[i] = new sbyte[Random().Next(7)];
}
}
}
catch (System.OutOfMemoryException e)
{
// Release and quit.
}
}
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));
}
/// <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_INT) + RamUsageEstimator.SizeOf(Data) + Positions.RamBytesUsed() + WordNums.RamBytesUsed());
}
