69 lines
2.5 KiB
C#
69 lines
2.5 KiB
C#
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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/*******************************************************************/
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/* WARNING */
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/* This file should be identical in the Bartok and Singularity */
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/* depots. Master copy resides in Bartok Depot. Changes should be */
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/* made to Bartok Depot and propagated to Singularity Depot. */
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/*******************************************************************/
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namespace System.GCs {
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using System.Collections;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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using System.Threading;
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#if SINGULARITY
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using Microsoft.Singularity;
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#endif
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[NoCCtor]
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internal class AdaptiveCopyingCollector: GenerationalCollector
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{
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internal static AdaptiveCopyingCollector instance;
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private AdaptiveCopyingCollector() {
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}
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public static new void Initialize() {
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GenerationalCollector.Initialize();
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SemispaceCollector.Initialize();
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SlidingCollector.Initialize();
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// instance = new AdaptiveCopyingCollector();
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instance = (AdaptiveCopyingCollector )
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BootstrapMemory.Allocate(typeof(AdaptiveCopyingCollector));
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}
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internal override void TruncateOlderAllocationAreas(int generation) {
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SemispaceCollector.instance.TruncateOlderAllocationAreas(generation);
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SlidingCollector.instance.TruncateOlderAllocationAreas(generation);
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}
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internal override void CollectGeneration(int generation,
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UIntPtr generationPageCount)
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{
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UIntPtr availableMemory = (UIntPtr)
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(MemoryManager.MemorySize - MemoryManager.OperatingSystemSize);
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UIntPtr softPageCountLimit = PageTable.PageCount(availableMemory);
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if (generation == (int)MAX_GENERATION &&
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(generationPageCount << 1) > softPageCountLimit) {
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// Use sliding collector when fromSpace > 1/2 available memory
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SlidingCollector.instance.CollectGeneration(generation, generationPageCount);
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} else {
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SemispaceCollector.instance.CollectGeneration(generation, generationPageCount);
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}
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}
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internal override void EnableHeap() {
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SlidingCollector.instance.EnableHeap();
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SemispaceCollector.instance.EnableHeap();
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}
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}
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}
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