/// <summary>
/// Tests writing to an array.
/// </summary>
public static void TestWrite(ArrayProfile profile)
{
using (var mapStream = new FileInfo(Global.FileName).Open(
FileMode.Create, FileAccess.ReadWrite))
{
using (var map = new MemoryMapStream(mapStream))
{
var array = new Array<int>(map, Global.ArrayTestLength,
profile);
var perf = new PerformanceInfoConsumer(
string.Format("Write Array: {0}", profile.ToString()),
1000);
perf.Start();
for (var i = 0; i < array.Length; i++)
{
array[i] = i * 2;
if (Global.Verbose && i % (array.Length / 100) == 0)
{
perf.Report("Writing... {0}%", i, array.Length - 1);
}
}
perf.Stop();
}
}
}
/// <summary>
/// Tests read from an array.
/// </summary>
public static void TestRead(ArrayProfile profile)
{
using (var mapStream = new FileInfo(Global.FileName).Open(
FileMode.Open, FileAccess.ReadWrite))
{
using (var map = new MemoryMapStream(mapStream))
{
var array = new Array<int>(map.CreateInt32(mapStream.Length / 4), profile);
var perf = new PerformanceInfoConsumer(
string.Format("Read Array: {0}", profile.ToString()),
1000);
perf.Start();
for (var i = 0; i < array.Length; i++)
{
var val = array[i];
if (val != i * 2)
{ // oeps, something went wrong here!
throw new System.Exception();
}
if (Global.Verbose && i % (array.Length / 100) == 0)
{
perf.Report("Reading... {0}%", i, array.Length - 1);
}
}
perf.Stop();
//var size = 1000000;
//perf = new PerformanceInfoConsumer(
// string.Format("Read Random Array: {0} {1}", size, profile.ToString()),
// 1000);
//perf.Start();
//var rand = new Random();
//for (var i = 0; i < size; i++)
//{
// var ran = (long)rand.Next((int)array.Length);
// var val = array[ran];
// if (val != ran * 2)
// { // oeps, something went wrong here!
// throw new System.Exception();
// }
// if (Global.Verbose && i % (size / 100) == 0)
// {
// perf.Report("Reading... {0}%", i, size);
// }
//}
//perf.Stop();
}
}
}
/// <summary>
/// Creates a mapped array with the given size.
/// </summary>
public static ArrayBase <T> CreateFor(MemoryMap map, long size, ArrayProfile profile)
{
var func = MemoryMap.GetCreateAccessorFuncFor <T>();
using (var accessor = func(map, 0))
{
if (accessor.ElementSizeFixed)
{ // fixed element size.
return(new Array <T>(map, size, profile));
}
}
return(new VariableArray <T>(map, size));
}
/// <summary>
/// Creates a memory mapped array based on existing data.
/// </summary>
public Array(MappedAccessor <T> accessor, ArrayProfile profile)
: this(accessor, profile.BufferSize, profile.CacheSize)
{
}
/// <summary>
/// Creates a memory mapped array.
/// </summary>
public Array(MemoryMap map, long length,
ArrayProfile profile)
: this(map, length, DefaultAccessorSize, profile.BufferSize, profile.CacheSize)
{
}