[Test] // a stress test of sorts
public void can_handle_large_allocation_spaces()
{
var mem = new OffsetMemorySimulator(Mega.Bytes(1), Giga.Bytes(1)); // only need enough room for arena tables
var subject = new Allocator(Giga.Bytes(1), Giga.Bytes(2), mem); // big for an embedded system. 3GB total.
var result = subject.Alloc(Allocator.ArenaSize / 2);
Assert.That(result.Value - Giga.Bytes(1), Is.EqualTo(131072)); // allocated at bottom of given space, excluding arena tables
for (int i = 0; i < 1000; i++)
{
result = subject.Alloc(Allocator.ArenaSize - 1);
}
Assert.That(subject.CurrentArena(), Is.GreaterThanOrEqualTo(1000));
Assert.That(result.Value, Is.GreaterThan(Giga.Bytes(1)));
}
public const int TestSize = 10_000_000; // large enough to keep the program running for a while
static void Main(string[] args)
{
var RamSize = Giga.Bytes(1);
var rnd = new Random();
var mem = new MemorySimulator(RamSize);
var subject = new TaggedHashMap(TestSize, new Allocator(0, RamSize, mem), mem);
Console.WriteLine("running...");
subject.Add(0, 1);
for (int i = 0; i < TestSize; i++) // 100'000 should have an acceptable run time. 25'000 should be well under a second
{
if (!subject.Put((ulong)rnd.Next(1, 1000000), (ulong)i, true))
{
throw new Exception("Bad push");
}
subject.Remove((ulong)rnd.Next(1, 1000000));
}
Console.WriteLine("done");
}