73 lines
2.2 KiB
Plaintext
73 lines
2.2 KiB
Plaintext
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// Microsoft Research Singularity
|
||
|
|
//
|
||
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
||
|
|
//
|
||
|
|
// Note:
|
||
|
|
//
|
||
|
|
|
||
|
|
using System;
|
||
|
|
using System.Collections;
|
||
|
|
using System.Threading;
|
||
|
|
|
||
|
|
namespace Microsoft.Singularity.Applications
|
||
|
|
{
|
||
|
|
public class HeapTest
|
||
|
|
{
|
||
|
|
// GC threshold is around 8MB.
|
||
|
|
private const long TotalToAllocate = 8L * 1024 * 1024 * 1024;
|
||
|
|
private const int LargeStringLength = 1023;
|
||
|
|
private const int SmallStringLength = 64;
|
||
|
|
|
||
|
|
private static object! monitor;
|
||
|
|
private static int threadCount = 0;
|
||
|
|
private static AutoResetEvent! exitEvent;
|
||
|
|
private static int stringLength;
|
||
|
|
private static int allocationsPerThread = 0;
|
||
|
|
|
||
|
|
private static void ThreadMain()
|
||
|
|
{
|
||
|
|
lock (HeapTest.monitor) {
|
||
|
|
HeapTest.threadCount++;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 0; i < HeapTest.allocationsPerThread; i++) {
|
||
|
|
new String('a', HeapTest.stringLength);
|
||
|
|
}
|
||
|
|
|
||
|
|
lock (HeapTest.monitor) {
|
||
|
|
HeapTest.threadCount--;
|
||
|
|
if (HeapTest.threadCount == 0) {
|
||
|
|
HeapTest.exitEvent.Set();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void Test(int stringLength)
|
||
|
|
{
|
||
|
|
HeapTest.monitor = new object();
|
||
|
|
HeapTest.exitEvent = new AutoResetEvent(false);
|
||
|
|
HeapTest.threadCount = 0;
|
||
|
|
HeapTest.stringLength = stringLength;
|
||
|
|
HeapTest.allocationsPerThread = unchecked((int)(TotalToAllocate / (Settings.MaxThreads * stringLength)));
|
||
|
|
|
||
|
|
for (int i = 0; i < Settings.MaxThreads; i++) {
|
||
|
|
Thread t = new Thread(new ThreadStart(ThreadMain));
|
||
|
|
t.Start();
|
||
|
|
}
|
||
|
|
HeapTest.exitEvent.WaitOne();
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void TestLargeAllocs()
|
||
|
|
{
|
||
|
|
Test(LargeStringLength);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void TestSmallAllocs()
|
||
|
|
{
|
||
|
|
Test(SmallStringLength);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|