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