组件功能
allocationstats是一个简单的辅助工具，用于显示您的应用程序分配多少内存。它采用GC.GetTotalMemory来跟踪内存使用
使用方法
添加 Allocmem.cs 到场景中的任何GameObject。当你按下播放按钮，会显示一个小窗口包含以下信息。
Currently allocated(当前分配):显示GC分配的总内存
Peak allocated(峰值)：显示了内存分配，（）内的值是GC最后一次应用程序运行期间分配的最大内存
Allocation rate(分配率)：显示了应用程序分配内存(以mb为单位)，比如 0.3秒MB内存分配，在这个时候我应该修复。
Allocation rate（收集次数/频率）：显示相距多远GC的集合间隔（秒）
Last collect delta（最后收集）：显示帧率有多高，当GC上次调用，调用GC通常使帧率下降。
AllocMem.cs
using UnityEngine;using System.Collections;using System.Text;[ExecuteInEditMode()]使这个脚本在编辑模式下运行public class AllocMem : MonoBehaviour{ public bool show = true; public bool showFPS = false; public bool showInEditor = false; public void Start() { useGUILayout = false; } // Use this for initialization public void OnGUI() { if (!show || (!Application.isPlaying && !showInEditor)) { return; } int collCount = System.GC.CollectionCount(0); if (lastCollectNum != collCount) { lastCollectNum = collCount; delta = Time.realtimeSinceStartup - lastCollect; lastCollect = Time.realtimeSinceStartup; lastDeltaTime = Time.deltaTime; collectAlloc = allocMem; } allocMem = (int)System.GC.GetTotalMemory(false); peakAlloc = allocMem > peakAlloc ? allocMem : peakAlloc; if (Time.realtimeSinceStartup - lastAllocSet > 0.3F) { int diff = allocMem - lastAllocMemory; lastAllocMemory = allocMem; lastAllocSet = Time.realtimeSinceStartup; if (diff >= 0) { allocRate = diff; } } StringBuilder text = new StringBuilder(); text.Append("Currently allocated "); text.Append((allocMem / 1000000F).ToString("0")); text.Append("mb\n"); text.Append("Peak allocated "); text.Append((peakAlloc / 1000000F).ToString("0")); text.Append("mb (last collect "); text.Append((collectAlloc / 1000000F).ToString("0")); text.Append(" mb)\n"); text.Append("Allocation rate "); text.Append((allocRate / 1000000F).ToString("0.0")); text.Append("mb\n"); text.Append("Collection frequency "); text.Append(delta.ToString("0.00")); text.Append("s\n"); text.Append("Last collect delta "); text.Append(lastDeltaTime.ToString("0.000")); text.Append("s ("); text.Append((1F / lastDeltaTime).ToString("0.0")); text.Append(" fps)"); if (showFPS) { text.Append("\n" + (1F / Time.deltaTime).ToString("0.0") + " fps"); } GUI.Box(new Rect(5, 5, 310, 80 + (showFPS ? 16 : 0)), ""); GUI.Label(new Rect(10, 5, 1000, 200), text.ToString()); /*GUI.Label (new Rect (5,5,1000,200), "Currently allocated "+(allocMem/1000000F).ToString ("0")+"mb\n"+ "Peak allocated "+(peakAlloc/1000000F).ToString ("0")+"mb "+ ("(last collect"+(collectAlloc/1000000F).ToString ("0")+" mb)" : "")+"\n"+ "Allocation rate "+(allocRate/1000000F).ToString ("0.0")+"mb\n"+ "Collection space "+delta.ToString ("0.00")+"s\n"+ "Last collect delta "+lastDeltaTime.ToString ("0.000") + " ("+(1F/lastDeltaTime).ToString ("0.0")+")");*/ } private float lastCollect = 0; private float lastCollectNum = 0; private float delta = 0; private float lastDeltaTime = 0; private int allocRate = 0; private int lastAllocMemory = 0; private float lastAllocSet = -9999; private int allocMem = 0; private int collectAlloc = 0; private int peakAlloc = 0;}