107 lines
3.6 KiB
C#
107 lines
3.6 KiB
C#
////////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft Research Singularity
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// File: GcStress.cs
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//
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// Note: Simple Singularity test program.
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// Warning: this file is compiled in two separate places:
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// - Applications/Tests/GcStress
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// - Kernel/Singularity.Stress
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using System;
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using System.Collections;
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namespace Microsoft.Singularity.Stress
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{
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public abstract class GcStress
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{
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private void GcStressVariableSizeObjects()
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{
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const uint maxItemBytes = 65535;
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const uint maxAllocatedBytes = 1000000;
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byte dummy = 0;
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Print("Running variable size object test.");
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DateTime start = DateTime.Now;
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TimeSpan duration = TimeSpan.FromSeconds(10);
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TimeSpan oneSecond = TimeSpan.FromSeconds(1);
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Queue q = new Queue();
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while (DateTime.Now - start < duration) {
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DateTime roundStart = DateTime.Now;
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uint iterations = 0;
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while (DateTime.Now - roundStart < oneSecond) {
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uint allocatedBytes = 0;
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uint i = 17u * iterations;
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while (allocatedBytes < maxAllocatedBytes) {
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uint itemBytes = 1u + (uint)((433777u * i) % maxItemBytes);
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allocatedBytes += itemBytes;
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i++;
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byte [] data = new byte[itemBytes];
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data[0] = 0xff;
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q.Enqueue(data);
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}
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while (q.Count != 0) {
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byte []! data = (!)(byte []) q.Dequeue();
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dummy ^= data[0];
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}
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iterations ++;
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}
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Print(String.Format(" {0}", iterations, dummy));
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}
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Print("\n");
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}
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private void GcStressFixedSizeObjects()
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{
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const int itemCount = 1024;
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const int itemBytes = 1024;
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Print("Running fixed size object test.");
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byte dummy = 0;
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DateTime start = DateTime.Now;
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TimeSpan duration = TimeSpan.FromSeconds(10);
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TimeSpan oneSecond = TimeSpan.FromSeconds(1);
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Queue q = new Queue();
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while (DateTime.Now - start < duration) {
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DateTime roundStart = DateTime.Now;
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int iterations = 0;
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while (DateTime.Now - roundStart < oneSecond) {
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for (int i = 0; i < itemCount; i++) {
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byte [] data = new byte[itemBytes];
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// Debug.Assert(data[0] == 0);
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data[0] = 0xff;
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q.Enqueue(data);
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}
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for (int i = 0; i < itemCount; i++) {
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byte []! data = (!)(byte []) q.Dequeue();
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// Debug.Assert(data[0] == 0xff);
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dummy ^= data[0];
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}
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iterations ++;
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}
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Print(String.Format(" {0}", iterations, dummy));
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}
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Print("\n");
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}
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protected abstract void Print(string! s);
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//[ShellCommand("gcstress", "Stress garbage collector")]
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public void Run()
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{
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GcStressFixedSizeObjects();
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GcStressVariableSizeObjects();
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}
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}
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}
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