\u5728 60fps（\u6bcf\u5e27 16.6ms）\u6216 120fps（\u6bcf\u5e27 8.3ms）\u7684\u4e25\u82db\u5e27\u65f6\u95f4\u9884\u7b97\u4e0b，\u4e3b\u5faa\u73af\u5185\u90e8\u4efb\u4f55\u5fae\u5c0f\u7684\u6258\u7ba1\u5806\u5185\u5b58\u5206\u914d（GC Alloc）\u90fd\u662f\u8bf1\u53d1\u6389\u5e27\u5361\u987f\u7684\u6f5c\u5728\u70b8\u5f39\u3002Unity \u7684\u5206\u4ee3\/\u589e\u91cf\u5783\u573e\u6536\u96c6\u5668（Incremental GC）\u867d\u7136\u5c06\u5355\u6b21\u5168\u91cf\u56de\u6536\u7684\u505c\u987f\u6253\u6563，\u4f46\u5728\u9ad8\u9891\u4ea7\u751f\u4e34\u65f6\u5bf9\u8c61\u65f6，GC \u4ecd\u4f1a\u9891\u7e41\u88ab\u5524\u9192\u4ecb\u5165，\u5360\u7528\u5b9d\u8d35\u7684 CPU \u5468\u671f\u3002<\/p>\n
\u5b9e\u73b0\u4e3b\u5faa\u73af GC Alloc \u7edd\u5bf9\u5f52\u96f6（Zero Allocation），\u6838\u5fc3\u5728\u4e8e\u5c06\u201c\u52a8\u6001\u521b\u5efa\u4e0e\u9500\u6bc1\u201d\u5f7b\u5e95\u6539\u9020\u4e3a\u201c\u9884\u5206\u914d\u590d\u7528\u4e0e\u5b9a\u957f\u73af\u5f62\u7f13\u51b2\u201d\u3002<\/p>\n
\u7b80\u5355\u7684\u5bf9\u8c61\u6c60\u5e38\u56e0\u4e3a\u4e0d\u5f53\u7684\u63a5\u53e3\u62bd\u8c61\u6216\u96c6\u5408\u904d\u5386\u5f15\u5165\u88c5\u7bb1\u5206\u914d\u3002\u4e00\u4e2a\u5065\u58ee\u4e14\u9ad8\u6548\u7684\u5bf9\u8c61\u6c60\u9700\u8981\u6ee1\u8db3\u4e09\u4e2a\u786c\u6027\u8981\u6c42：<\/p>\n
\u5177\u5907\u5bb9\u91cf\u9632\u7206\u4e0a\u9650，\u907f\u514d\u5076\u53d1\u6027\u5cf0\u503c\u6491\u5927\u5e38\u9a7b\u5185\u5b58\u3002<\/li>\nusing System;
\nusing System.Collections.Generic;<\/p>\n
public interface IPoolable
\n{
\n void OnSpawn();
\n void OnRecycle();
\n}<\/p>\n
public sealed class ZeroAllocObjectPool<T> where T : class, IPoolable, new()
\n{
\n private readonly T[] _pool;
\n private readonly int _capacity;
\n private int _count;<\/p>\n
public ZeroAllocObjectPool(int capacity)
\n {
\n _capacity = capacity;
\n _pool = new T[capacity];
\n _count = 0;<\/p>\n
\/\/ \u9884\u70ed\u9636\u6bb5\u4e00\u6b21\u6027\u586b\u6ee1\u6c60\u5b50
\n for (int i = 0; i < capacity; i++)
\n {
\n _pool[i] = new T();
\n }
\n _count = capacity;
\n }<\/p>\n
public T Spawn()
\n {
\n T item;
\n if (_count > 0)
\n {
\n _count–;
\n item = _pool[_count];
\n _pool[_count] = null; \/\/ \u5207\u65ad\u69fd\u4f4d\u5f15\u7528
\n }
\n else
\n {
\n \/\/ \u6c60\u8017\u5c3d\u65f6\u964d\u7ea7\u521b\u5efa，\u4f46\u4f1a\u5728\u56de\u6536\u65f6\u88ab\u4e22\u5f03
\n item = new T();
\n }<\/p>\n
item.OnSpawn();
\n return item;
\n }<\/p>\n
public void Recycle(T item)
\n {
\n if (item == null) return;<\/p>\n
item.OnRecycle();<\/p>\n
if (_count < _capacity)
\n {
\n _pool[_count] = item;
\n _count++;
\n }
\n \/\/ \u8d85\u51fa\u5bb9\u91cf\u4e0a\u9650\u7684\u5bf9\u8c61\u76f4\u63a5\u4efb\u7531 GC \u5f02\u6b65\u56de\u6536，\u9632\u6b62\u5e38\u9a7b\u5185\u5b58\u65e0\u9650\u81a8\u80c0
\n }
\n}<\/p>\n
\u73af\u5f62\u7f13\u51b2\u533a（Ring Buffer）：\u77ac\u6001\u4e8b\u4ef6\u4e0e\u9ad8\u9891\u6570\u636e\u7684\u96f6\u5206\u914d\u4f20\u8f93<\/h4>\n
\u5728\u5e27\u540c\u6b65\u3001\u6218\u6597\u65e5\u5fd7\u6355\u83b7\u3001\u7279\u6548\u7c92\u5b50\u751f\u547d\u5468\u671f\u7ba1\u7406\u7b49\u573a\u666f\u4e2d，\u6570\u636e\u901a\u5e38\u5177\u6709\u201c\u5148\u8fdb\u5148\u51fa（FIFO）\u201d\u4e14\u201c\u751f\u547d\u5468\u671f\u6781\u77ed\u201d\u7684\u7279\u5f81\u3002\u82e5\u4f7f\u7528 Queue<T> \u6216 List<T>，\u5728\u5143\u7d20\u51fa\u961f\u5165\u961f\u65f6\u4f1a\u5f15\u53d1\u9891\u7e41\u7684\u6570\u7ec4\u79fb\u4f4d\u6216\u5185\u90e8\u6269\u5bb9\u3002<\/p>\n
\u57fa\u4e8e\u5b9a\u957f\u6570\u7ec4\u7684\u73af\u5f62\u7f13\u51b2\u533a（Ring Buffer）\u901a\u8fc7\u7ef4\u62a4 Head \u548c Tail \u6307\u9488，\u5b9e\u73b0\u5e38\u6570\u65f6\u95f4 $O(1)$ \u7684\u65e0\u9501\u8bfb\u5199，\u5168\u7a0b\u96f6\u5185\u5b58\u5206\u914d：<\/p>\n
public sealed class FastEventRingBuffer<T> where T : struct
\n{
\n private readonly T[] _buffer;
\n private readonly int _mask;
\n private int _head;
\n private int _tail;<\/p>\n
public FastEventRingBuffer(int capacityPowerOfTwo)
\n {
\n if ((capacityPowerOfTwo & (capacityPowerOfTwo – 1)) != 0)
\n {
\n throw new ArgumentException("Capacity must be a power of two!");
\n }<\/p>\n
_buffer = new T[capacityPowerOfTwo];
\n _mask = capacityPowerOfTwo – 1;
\n _head = 0;
\n _tail = 0;
\n }<\/p>\n
public int Count => _head – _tail;
\n public bool IsEmpty => _head == _tail;
\n public bool IsFull => (_head – _tail) == _buffer.Length;<\/p>\n
[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
\n public bool Enqueue(in T item)
\n {
\n if (IsFull)
\n {
\n return false; \/\/ \u961f\u5217\u5df2\u6ee1，\u6309\u9700\u4e22\u5f03\u6216\u8986\u76d6
\n }<\/p>\n
_buffer[_head & _mask] = item;
\n _head++;
\n return true;
\n }<\/p>\n
[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
\n public bool TryDequeue(out T item)
\n {
\n if (IsEmpty)
\n {
\n item = default;
\n return false;
\n }<\/p>\n
item = _buffer[_tail & _mask];
\n _tail++;
\n return true;
\n }<\/p>\n
public void Clear()
\n {
\n _head = 0;
\n _tail = 0;
\n }
\n}<\/p>\n
\u5e38\u89c1\u4e3b\u5faa\u73af\u9690\u5f0f GC Alloc \u626b\u96f7\u6e05\u518c<\/h4>\n
\u9664\u4e86\u663e\u5f0f\u7684 new \u8bed\u53e5\u5916，C# \u7f16\u8bd1\u5668\u7684\u8bed\u6cd5\u7cd6\u5728\u5e95\u5c42\u5f80\u5f80\u9690\u85cf\u7740\u9759\u9ed8\u7684\u5806\u5206\u914d：<\/p>\n
1. \u95ed\u5305\u6355\u83b7\u4e0e Lambda \u59d4\u6258<\/h5>\n
\/\/ \u9519\u8bef：\u6355\u83b7\u4e86\u5c40\u90e8\u53d8\u91cf speed，\u6bcf\u5e27\u751f\u6210\u4e00\u4e2a\u533f\u540d\u7c7b\u5b9e\u4f8b
\nUpdate() {
\n float speed = GetCurrentSpeed();
\n _enemies.ForEach(e => e.Move(speed)); \/\/ GC Alloc: 48 Bytes
\n}<\/p>\n
\/\/ \u6b63\u786e：\u4f7f\u7528\u6807\u51c6 for \u5faa\u73af，\u65e0\u4efb\u4f55\u59d4\u6258\u4e0e\u95ed\u5305
\nUpdate() {
\n float speed = GetCurrentSpeed();
\n for (int i = 0; i < _enemies.Count; i++) {
\n _enemies[i].Move(speed);
\n }
\n}<\/p>\n
2. params \u5173\u952e\u5b57\u7684\u53ef\u53d8\u53c2\u6570\u4f20\u9012<\/h5>\n
\/\/ \u9519\u8bef：\u6bcf\u6b21\u8c03\u7528\u90fd\u4f1a\u5728\u5e95\u5c42\u9690\u5f0f new object[2]
\nDebugFormat("Entity {0} hit by {1}", entityId, weaponId);<\/p>\n
\/\/ \u6b63\u786e：\u5b9a\u4e49\u65e0 GC \u7684\u91cd\u8f7d\u65b9\u6cd5，\u6216\u8005\u4f7f\u7528\u56fa\u5b9a\u5bb9\u91cf\u7684\u5b57\u7b26\u7f13\u51b2\u533a
\nDebugFormatFixed(entityId, weaponId);<\/p>\n
3. \u7ed3\u6784\u4f53\u63a5\u53e3\u8c03\u7528\u4e0e\u88c5\u7bb1<\/h5>\n
struct DamageEvent : IEvent { public int Val; }<\/p>\n
\/\/ \u9519\u8bef：\u5c06\u7ed3\u6784\u4f53\u8f6c\u4e3a\u63a5\u53e3\u7c7b\u578b\u4f20\u9012，\u89e6\u53d1\u88c5\u7bb1
\nvoid ProcessEvent(IEvent evt) { } \/\/ GC Alloc: 24 Bytes (Boxed struct)<\/p>\n
\/\/ \u6b63\u786e：\u4f7f\u7528\u6cdb\u578b\u7ea6\u675f\u6cdb\u5316\u4f20\u53c2，\u907f\u514d\u88c5\u7bb1
\nvoid ProcessEvent<T>(in T evt) where T : struct, IEvent { }<\/p>\n
4. \u5b57\u7b26\u4e32\u9ad8\u9891\u62fc\u63a5<\/h5>\n
\/\/ \u9519\u8bef：\u5b57\u7b26\u4e32\u5c5e\u4e8e\u4e0d\u53ef\u53d8\u6258\u7ba1\u5bf9\u8c61，\u62fc\u63a5\u5fc5\u4ea7\u751f\u65b0\u5806\u5bf9\u8c61
\n_healthText.text = "HP: " + currentHp + "\/" + maxHp; \/\/ \u6bcf\u5e27\u6570\u5341\u5b57\u8282<\/p>\n
\/\/ \u6b63\u786e：\u4f7f\u7528\u57fa\u4e8e\u975e\u6258\u7ba1\/\u5b9a\u957f\u5b57\u7b26\u6570\u7ec4\u7684 StringFormatter \u6216 ValueStringBuilder
\nZString.Format(_healthText, "HP: {0}\/{1}", currentHp, maxHp);<\/p>\n
Profiler \u9a8c\u8bc1\u7ed3\u679c\u4e0e\u6536\u76ca<\/h4>\n
\u5728\u5b9e\u9645 2000 \u4e2a\u52a8\u6001\u6218\u6597\u5355\u4f4d\u7684\u573a\u666f\u538b\u6d4b\u4e2d：<\/p>\n
\n- \u672a\u7ecf\u6c60\u5316\u6539\u9020\u524d，\u4e3b\u5faa\u73af\u5355\u5e27\u4ea7\u751f\u7ea6 14.2 KB GC Alloc，\u6bcf\u9694 34 \u79d2\u5c31\u4f1a\u89e6\u53d1\u4e00\u6b21\u589e\u91cf GC，\u5f15\u53d1 4ms7ms \u7684\u5076\u53d1\u5361\u987f；<\/li>\n
- \u5168\u9762\u90e8\u7f72 ZeroAllocObjectPool\u3001FastEventRingBuffer \u5e76\u6e05\u9664\u975e\u6cd5\u88c5\u7bb1\u4e0e\u59d4\u6258\u540e，Unity Profiler \u4e2d\u4e3b\u7ebf\u7a0b\u6574\u4e2a Update \u9636\u6bb5\u7684 GC.Alloc \u7a33\u5b9a\u663e\u793a\u4e3a 0 B；<\/li>\n
- \u5e27\u65f6\u95f4\u6ce2\u52a8\u65b9\u5dee（Frame Time Variance）\u964d\u4f4e\u4e86 82%，\u5e27\u7387\u66f2\u7ebf\u5448\u73b0\u5b8c\u5168\u5e73\u76f4\u7684 60fps \u76f4\u7ebf\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
\u5bf9\u8c61\u6c60\u4e0e Ring Buffer \u7684\u96f6\u5206\u914d\u5b9e\u6218：\u8ba9\u4e3b\u5faa\u73af GC Alloc \u5f52\u96f6\u5728 60fps（\u6bcf\u5e27 16.6ms）\u6216 120fps（\u6bcf\u5e27 8.3ms）\u7684\u4e25\u82db\u5e27\u65f6\u95f4\u9884\u7b97\u4e0b，\u4e3b\u5faa\u73af\u5185\u90e8\u4efb\u4f55\u5fae\u5c0f\u7684\u6258\u7ba1\u5806\u5185\u5b58\u5206\u914d（GC Alloc）\u90fd\u662f\u8bf1\u53d1\u6389\u5e27\u5361\u987f\u7684\u6f5c\u5728\u70b8\u5f39\u3002Unity \u7684\u5206\u4ee3\/\u589e\u91cf\u5783\u573e\u6536\u96c6\u5668（Incremental GC）\u867d\u7136\u5c06\u5355\u6b21\u5168\u91cf\u56de\u6536\u7684<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[66,183,50,1248,51],"topic":[],"class_list":["post-103200","post","type-post","status-publish","format-standard","hentry","category-server","tag-ai","tag-unity","tag-50","tag-1248","tag-51"],"yoast_head":"\n
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