\u5206\u914d\u5f00\u9500：new\/delete \u6d89\u53ca\u7cfb\u7edf\u8c03\u7528，\u8017\u65f6\u8f83\u9ad8（\u5fae\u79d2\u7ea7）\u3002<\/p>\n<\/li>\n
\u5185\u5b58\u788e\u7247：\u9891\u7e41\u5206\u914d\/\u91ca\u653e\u5bfc\u81f4\u5185\u5b58\u5206\u6563，\u964d\u4f4e\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/p>\n<\/li>\n
\u7ebf\u7a0b\u5b89\u5168：\u591a\u7ebf\u7a0b\u8bbf\u95ee\u5185\u5b58\u6c60\u9700\u8981\u540c\u6b65\u673a\u5236，\u53ef\u80fd\u5f15\u5165\u9501\u7ade\u4e89\u3002<\/p>\n<\/li>\n<\/ul>\n
\u4f18\u5316\u76ee\u6807：<\/p>\n
- \n
- \n
\u9884\u5206\u914d\u56fa\u5b9a\u5927\u5c0f\u7684\u5185\u5b58\u5757，\u5feb\u901f\u5206\u914d\u548c\u56de\u6536\u3002<\/p>\n<\/li>\n
- \n
\u63d0\u4f9b\u7ebf\u7a0b\u5b89\u5168\u7684\u5206\u914d\/\u91ca\u653e\u64cd\u4f5c，\u5c3d\u91cf\u51cf\u5c11\u9501\u6216\u4f7f\u7528\u65e0\u9501\u8bbe\u8ba1\u3002<\/p>\n<\/li>\n
- \n
\u786e\u4fdd\u5185\u5b58\u5bf9\u9f50\u548c\u7f13\u5b58\u53cb\u597d，\u51cf\u5c11\u4f2a\u5171\u4eab\u3002<\/p>\n<\/li>\n<\/ul>\n
2. \u5185\u5b58\u6c60\u8bbe\u8ba1<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\u7ebf\u7a0b\u5b89\u5168\u5185\u5b58\u6c60\u5b9e\u73b0，\u9488\u5bf9\u65e0\u9501\u961f\u5217\u4e2d\u7684\u4efb\u52a1\u5bf9\u8c61\u5206\u914d，\u5305\u542b\u4ee5\u4e0b\u7279\u6027：<\/p>\n
- \n
- \n
\u56fa\u5b9a\u5927\u5c0f\u5bf9\u8c61：\u5047\u8bbe\u4efb\u52a1\u5bf9\u8c61（\u5982 HttpRequest）\u5927\u5c0f\u56fa\u5b9a\u3002<\/p>\n<\/li>\n
- \n
\u65e0\u9501\u5206\u914d：\u4f7f\u7528 std::atomic \u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\u5206\u914d\u3002<\/p>\n<\/li>\n
- \n
\u7f13\u5b58\u5bf9\u9f50：\u907f\u514d\u4f2a\u5171\u4eab\u3002<\/p>\n<\/li>\n
- \n
\u5ef6\u8fdf\u56de\u6536：\u51cf\u5c11\u7ade\u4e89，\u63d0\u9ad8\u56de\u6536\u6548\u7387\u3002<\/p>\n<\/li>\n<\/ul>\n
\u4ee3\u7801\u5b9e\u73b0：<\/p>\n
cpp<\/p>\n<\/p>\n
#include <atomic>
\n#include <vector>
\n#include <cstdint>
\n#include <stdexcept><\/p>\ntemplate<typename T, size_t PoolSize = 1024>
\nclass MemoryPool {
\nprivate:
\n \/\/ \u5185\u5b58\u5757\u7ed3\u6784，\u7f13\u5b58\u7ebf\u5bf9\u9f50
\n struct alignas(64) Block {
\n union {
\n T object; \/\/ \u5b58\u50a8\u5bf9\u8c61
\n std::atomic<Block*> next; \/\/ \u7a7a\u95f2\u5757\u94fe\u8868\u6307\u9488
\n };
\n Block() : next(nullptr) {}
\n ~Block() { \/* \u907f\u514d\u6790\u6784 object，\u9664\u975e\u660e\u786e\u9700\u8981 *\/ }
\n };<\/p>\nstd::vector<Block> blocks; \/\/ \u9884\u5206\u914d\u7684\u5185\u5b58\u5757
\n std::atomic<Block*> free_list; \/\/ \u7a7a\u95f2\u5757\u94fe\u8868\u5934
\n std::atomic<size_t> allocated_count{0}; \/\/ \u5df2\u5206\u914d\u5757\u8ba1\u6570<\/p>\npublic:
\n MemoryPool() : blocks(PoolSize) {
\n \/\/ \u521d\u59cb\u5316\u7a7a\u95f2\u94fe\u8868
\n Block* head = &blocks[0];
\n for (size_t i = 0; i < PoolSize – 1; ++i) {
\n blocks[i].next.store(&blocks[i + 1], std::memory_order_relaxed);
\n }
\n blocks[PoolSize – 1].next.store(nullptr, std::memory_order_relaxed);
\n free_list.store(head, std::memory_order_release);
\n }<\/p>\n~MemoryPool() {
\n \/\/ \u786e\u4fdd\u6240\u6709\u5757\u5df2\u5f52\u8fd8
\n if (allocated_count.load(std::memory_order_relaxed) != 0) {
\n std::cerr << "Warning: Memory pool destroyed with " << allocated_count.load()
\n << " blocks still allocated" << std::endl;
\n }
\n }<\/p>\n\/\/ \u5206\u914d\u5bf9\u8c61
\n T* allocate() {
\n Block* old_head = free_list.load(std::memory_order_acquire);
\n Block* new_head;
\n do {
\n if (!old_head) return nullptr; \/\/ \u6c60\u5df2\u6ee1
\n new_head = old_head->next.load(std::memory_order_relaxed);
\n } while (!free_list.compare_exchange_strong(old_head, new_head,
\n std::memory_order_release,
\n std::memory_order_acquire));
\n allocated_count.fetch_add(1, std::memory_order_relaxed);
\n return reinterpret_cast<T*>(old_head);
\n }<\/p>\n\/\/ \u91ca\u653e\u5bf9\u8c61
\n void deallocate(T* ptr) {
\n if (!ptr) return;
\n Block* block = reinterpret_cast<Block*>(ptr);
\n Block* old_head = free_list.load(std::memory_order_acquire);
\n do {
\n block->next.store(old_head, std::memory_order_relaxed);
\n } while (!free_list.compare_exchange_strong(old_head, block,
\n std::memory_order_release,
\n std::memory_order_acquire));
\n allocated_count.fetch_sub(1, std::memory_order_relaxed);
\n }<\/p>\nsize_t allocated() const {
\n return allocated_count.load(std::memory_order_relaxed);
\n }
\n}; <\/p>\n\u7ec6\u8282\u89e3\u6790：<\/p>\n
- \n
Block \u7ed3\u6784：<\/p>\n
- \n
- \n
\u4f7f\u7528 union \u5b58\u50a8\u5bf9\u8c61\u6216\u7a7a\u95f2\u94fe\u8868\u6307\u9488，\u8282\u7701\u7a7a\u95f4\u3002<\/p>\n<\/li>\n
- \n
alignas(64) \u786e\u4fdd\u7f13\u5b58\u7ebf\u5bf9\u9f50，\u9632\u6b62\u4f2a\u5171\u4eab\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u65e0\u9501\u5206\u914d\/\u91ca\u653e：<\/p>\n
- \n
- \n
\u4f7f\u7528 CAS \u64cd\u4f5c\u66f4\u65b0 free_list，\u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168\u3002<\/p>\n<\/li>\n
- \n
\u5206\u914d\u65f6\u4ece\u7a7a\u95f2\u94fe\u8868\u53d6\u5934\u90e8\u5757，\u91ca\u653e\u65f6\u5c06\u5757\u63d2\u56de\u5934\u90e8\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u5185\u5b58\u5e8f：<\/p>\n
- \n
- \n
memory_order_acquire\/release \u786e\u4fdd\u94fe\u8868\u64cd\u4f5c\u540c\u6b65\u3002<\/p>\n<\/li>\n
- \n
allocated_count \u4f7f\u7528 memory_order_relaxed，\u56e0\u4e3a\u8ba1\u6570\u4e0d\u5f71\u54cd\u6b63\u786e\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u5b89\u5168\u6027：<\/p>\n
- \n
- \n
\u68c0\u67e5\u6c60\u6ee1（allocate \u8fd4\u56de nullptr）\u3002<\/p>\n<\/li>\n
- \n
\u6790\u6784\u65f6\u8b66\u544a\u672a\u5f52\u8fd8\u7684\u5757\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u5c40\u9650\u6027：<\/p>\n
- \n
- \n
\u56fa\u5b9a\u5927\u5c0f\u5bf9\u8c61，\u9700\u4e3a\u6bcf\u79cd\u7c7b\u578b\u5355\u72ec\u521b\u5efa\u5185\u5b58\u6c60\u3002<\/p>\n<\/li>\n
- \n
\u6c60\u5927\u5c0f\u56fa\u5b9a，\u9700\u9884\u4f30\u6700\u5927\u9700\u6c42\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
3. \u5185\u5b58\u6c60\u4f18\u5316\u70b9<\/p>\n
- \n
- \n
\u52a8\u6001\u6269\u5c55：\u6c60\u6ee1\u65f6\u5206\u914d\u65b0\u5757（\u9700\u9501\u4fdd\u62a4）\u3002<\/p>\n<\/li>\n
- \n
\u6279\u91cf\u5206\u914d：\u4e00\u6b21\u5206\u914d\u591a\u4e2a\u5757，\u51cf\u5c11 CAS \u6b21\u6570\u3002<\/p>\n<\/li>\n
- \n
\u7ebf\u7a0b\u672c\u5730\u6c60：\u6bcf\u4e2a\u7ebf\u7a0b\u7ef4\u62a4\u672c\u5730\u5185\u5b58\u6c60，\u51cf\u5c11\u7ade\u4e89\u3002<\/p>\n<\/li>\n
- \n
\u56de\u6536\u7b56\u7565：\u5ef6\u8fdf\u56de\u6536（\u5982 epoch-based reclamation）\u907f\u514d ABA \u95ee\u9898\u3002<\/p>\n<\/li>\n<\/ul>\n
\n\u4e8c\u3001\u9488\u5bf9\u9ad8\u5e76\u53d1 Web \u670d\u52a1\u5668\u7684\u7ebf\u7a0b\u6c60\u8bbe\u8ba1<\/p>\n
1. \u573a\u666f\u9700\u6c42<\/p>\n
Web \u670d\u52a1\u5668\u9700\u8981\u5904\u7406\u5927\u91cf\u5e76\u53d1 HTTP \u8bf7\u6c42（\u5982 GET\u3001POST），\u5177\u6709\u4ee5\u4e0b\u7279\u70b9：<\/p>\n
- \n
- \n
\u9ad8\u541e\u5410\u91cf：\u6bcf\u79d2\u5904\u7406\u6570\u5343\u8bf7\u6c42\u3002<\/p>\n<\/li>\n
- \n
\u4f4e\u5ef6\u8fdf：\u5173\u952e\u8bf7\u6c42（\u5982\u652f\u4ed8）\u9700\u5feb\u901f\u54cd\u5e94\u3002<\/p>\n<\/li>\n
- \n
\u4f18\u5148\u7ea7\u8c03\u5ea6：API \u8bf7\u6c42\u4f18\u5148\u4e8e\u65e5\u5fd7\u8bb0\u5f55\u3002<\/p>\n<\/li>\n
- \n
\u52a8\u6001\u8d1f\u8f7d：\u8bf7\u6c42\u91cf\u968f\u65f6\u95f4\u6ce2\u52a8\u3002<\/p>\n<\/li>\n
- \n
\u8d44\u6e90\u9ad8\u6548：\u907f\u514d\u5185\u5b58\u6d6a\u8d39\u548c\u7ebf\u7a0b\u5f00\u9500\u3002<\/p>\n<\/li>\n<\/ul>\n
\u8bbe\u8ba1\u76ee\u6807：<\/p>\n
- \n
- \n
\u4f7f\u7528\u5185\u5b58\u6c60\u7ba1\u7406\u4efb\u52a1\u5bf9\u8c61，\u51cf\u5c11\u5206\u914d\u5f00\u9500\u3002<\/p>\n<\/li>\n
- \n
\u96c6\u6210\u65e0\u9501\u73af\u5f62\u7f13\u51b2\u533a，\u652f\u6301\u6279\u91cf\u64cd\u4f5c\u3002<\/p>\n<\/li>\n
- \n
\u652f\u6301\u4efb\u52a1\u4f18\u5148\u7ea7\u548c\u4efb\u52a1\u7a83\u53d6，\u786e\u4fdd\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n<\/li>\n
- \n
\u63d0\u4f9b\u6027\u80fd\u76d1\u63a7，\u52a8\u6001\u8c03\u6574\u7ebf\u7a0b\u6570\u3002<\/p>\n<\/li>\n<\/ul>\n
2. \u4ee3\u7801\u5b9e\u73b0<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u9488\u5bf9 Web \u670d\u52a1\u5668\u7684\u7ebf\u7a0b\u6c60\u5b9e\u73b0，\u96c6\u6210\u5185\u5b58\u6c60\u3001\u65e0\u9501\u73af\u5f62\u7f13\u51b2\u533a\u3001\u4f18\u5148\u7ea7\u8c03\u5ea6\u548c\u52a8\u6001\u7ebf\u7a0b\u7ba1\u7406\u3002<\/p>\n
cpp<\/p>\n<\/p>\n
#include <iostream>
\n#include <vector>
\n#include <thread>
\n#include <mutex>
\n#include <condition_variable>
\n#include <functional>
\n#include <future>
\n#include <chrono>
\n#include <random>
\n#include <algorithm><\/p>\n\/\/ \u5185\u5b58\u6c60（\u590d\u7528\u4e0a\u8ff0\u5b9e\u73b0）<\/p>\n
\/\/ \u65e0\u9501\u73af\u5f62\u7f13\u51b2\u533a（\u4f18\u5316\u7248）
\ntemplate<typename T, size_t Capacity = 1024>
\nclass MPMCRingBuffer {
\nprivate:
\n struct Slot {
\n std::atomic<T*> data; \/\/ \u6307\u9488，\u914d\u5408\u5185\u5b58\u6c60
\n std::atomic<bool> occupied;
\n Slot() : data(nullptr), occupied(false) {}
\n };<\/p>\nstd::array<Slot, Capacity> buffer;
\n std::atomic<size_t> head{0};
\n std::atomic<size_t> tail{0};
\n std::atomic<size_t> size_{0};<\/p>\npublic:
\n bool enqueue(T* item) {
\n size_t current_tail = tail.load(std::memory_order_acquire);
\n size_t current_head = head.load(std::memory_order_acquire);
\n if (size_.load(std::memory_order_relaxed) >= Capacity) return false;<\/p>\nsize_t index = current_tail % Capacity;
\n if (buffer[index].occupied.load(std::memory_order_acquire)) return false;<\/p>\nsize_t new_tail = (current_tail + 1) % Capacity;
\n if (!tail.compare_exchange_strong(current_tail, new_tail,
\n std::memory_order_release,
\n std::memory_order_acquire)) {
\n return false;
\n }<\/p>\nbuffer[index].data.store(item, std::memory_order_relaxed);
\n buffer[index].occupied.store(true, std::memory_order_release);
\n size_.fetch_add(1, std::memory_order_relaxed);
\n return true;
\n }<\/p>\nbool dequeue(T*& item) {
\n size_t current_head = head.load(std::memory_order_acquire);
\n size_t current_tail = tail.load(std::memory_order_acquire);
\n if (size_.load(std::memory_order_relaxed) == 0) return false;<\/p>\nsize_t index = current_head % Capacity;
\n if (!buffer[index].occupied.load(std::memory_order_acquire)) return false;<\/p>\nsize_t new_head = (current_head + 1) % Capacity;
\n if (!head.compare_exchange_strong(current_head, new_head,
\n std::memory_order_release,
\n std::memory_order_acquire)) {
\n return false;
\n }<\/p>\nitem = buffer[index].data.load(std::memory_order_relaxed);
\n buffer[index].occupied.store(false, std::memory_order_release);
\n size_.fetch_sub(1, std::memory_order_relaxed);
\n return true;
\n }<\/p>\nsize_t size() const { return size_.load(std::memory_order_relaxed); }
\n};<\/p>\nstruct HttpRequest {
\n std::string url;
\n int priority;
\n std::function<int()> handler;
\n HttpRequest(std::string u, int p, std::function<int()> h)
\n : url(std::move(u)), priority(p), handler(std::move(h)) {}
\n};<\/p>\nclass ServerThreadPool {
\nprivate:
\n MemoryPool<HttpRequest> memory_pool; \/\/ \u5185\u5b58\u6c60
\n std::vector<std::thread> workers;
\n std::vector<MPMCRingBuffer<HttpRequest>> local_queues;
\n std::mutex mutex_;
\n std::condition_variable condition_;
\n std::atomic<bool> stop{false};
\n std::atomic<size_t> total_tasks_{0};
\n size_t max_threads_;<\/p>\npublic:
\n ServerThreadPool(size_t num_threads, size_t max_threads = 8, size_t pool_size = 2048)
\n : memory_pool(pool_size), max_threads_(max_threads) {
\n local_queues.resize(num_threads);
\n start_workers(num_threads);
\n }<\/p>\n~ServerThreadPool() {
\n {
\n std::lock_guard<std::mutex> lock(mutex_);
\n stop = true;
\n }
\n condition_.notify_all();
\n for (auto& worker : workers) {
\n worker.join();
\n }
\n }<\/p>\ntemplate<typename F>
\n auto enqueue_request(std::string url, int priority, F&& handler) -> std::future<int> {
\n auto task = std::make_shared<std::packaged_task<int()>>(
\n std::forward<F>(handler));
\n std::future<int> result = task->get_future();<\/p>\nHttpRequest* req = memory_pool.allocate();
\n if (!req) throw std::runtime_error("Memory pool exhausted");
\n new(req) HttpRequest(std::move(url), priority, [task] { return (*task)(); });<\/p>\n{
\n std::lock_guard<std::mutex> lock(mutex_);
\n if (stop) {
\n memory_pool.deallocate(req);
\n throw std::runtime_error("Enqueue on stopped ServerThreadPool");
\n }
\n size_t queue_index = select_queue(priority);
\n while (!local_queues[queue_index].enqueue(req)) {
\n queue_index = (queue_index + 1) % local_queues.size();
\n if (queue_index == select_queue(priority)) {
\n \/\/ \u52a8\u6001\u6269\u5c55\u7ebf\u7a0b
\n if (workers.size() < max_threads_) {
\n start_workers(1);
\n local_queues.emplace_back();
\n } else {
\n memory_pool.deallocate(req);
\n throw std::runtime_error("All queues full");
\n }
\n }
\n }
\n total_tasks_.fetch_add(1, std::memory_order_relaxed);
\n }
\n condition_.notify_one();
\n return result;
\n }<\/p>\nsize_t get_pending_tasks() const {
\n size_t total = 0;
\n for (const auto& queue : local_queues) {
\n total += queue.size();
\n }
\n return total;
\n }<\/p>\nprivate:
\n void start_workers(size_t num_threads) {
\n for (size_t i = 0; i < num_threads; ++i) {
\n workers.emplace_back([this, i = workers.size()] {
\n std::vector<HttpRequest*> batch(8);
\n while (true) {
\n bool task_executed = false;
\n \/\/ \u672c\u5730\u961f\u5217\u51fa\u961f
\n for (size_t j = 0; j < batch.size(); ++j) {
\n if (!local_queues[i].dequeue(batch[j])) break;
\n task_executed = true;
\n }
\n size_t count = std::count_if(batch.begin(), batch.end(),
\n [](auto* ptr) { return ptr != nullptr; });
\n if (count > 0) {
\n process_batch(batch, count, i);
\n std::fill(batch.begin(), batch.end(), nullptr);
\n } else {
\n \/\/ \u4efb\u52a1\u7a83\u53d6
\n for (size_t j = 0; j < local_queues.size(); ++j) {
\n if (j != i) {
\n count = 0;
\n for (size_t k = 0; k < batch.size(); ++k) {
\n if (!local_queues[j].dequeue(batch[k])) break;
\n count++;
\n }
\n if (count > 0) {
\n std::cout << "Thread " << i << " stole " << count
\n << " tasks from queue " << j << std::endl;
\n process_batch(batch, count, i);
\n std::fill(batch.begin(), batch.end(), nullptr);
\n task_executed = true;
\n break;
\n }
\n }
\n }
\n }
\n {
\n std::unique_lock<std::mutex> lock(mutex_);
\n if (stop && get_pending_tasks() == 0) return;
\n }
\n if (!task_executed) {
\n std::this_thread::sleep_for(std::chrono::microseconds(10));
\n }
\n }
\n });
\n }
\n }<\/p>\nsize_t select_queue(int priority) {
\n size_t min_tasks = std::numeric_limits<size_t>::max();
\n size_t selected = 0;
\n for (size_t i = 0; i < local_queues.size(); ++i) {
\n size_t tasks = local_queues[i].size();
\n if (tasks < min_tasks) {
\n min_tasks = tasks;
\n selected = i;
\n }
\n }
\n return selected;
\n }<\/p>\nvoid process_batch(const std::vector<HttpRequest*>& batch, size_t count, size_t thread_id) {
\n \/\/ \u6309\u4f18\u5148\u7ea7\u6392\u5e8f
\n std::vector<HttpRequest*> sorted_batch(batch.begin(), batch.begin() + count);
\n std::sort(sorted_batch.begin(), sorted_batch.end(),
\n [](const HttpRequest* a, const HttpRequest* b) {
\n return a->priority > b->priority;
\n });
\n for (size_t i = 0; i < count; ++i) {
\n auto* req = sorted_batch[i];
\n try {
\n int status = req->handler();
\n std::cout << "Thread " << thread_id << " processed " << req->url
\n << " (priority " << req->priority << "), status: " << status << std::endl;
\n total_tasks_.fetch_sub(1, std::memory_order_relaxed);
\n } catch (const std::exception& e) {
\n std::cerr << "Thread " << thread_id << " caught exception: " << e.what() << std::endl;
\n }
\n req->~HttpRequest();
\n memory_pool.deallocate(req);
\n }
\n }
\n};<\/p>\n\/\/ \u6d4b\u8bd5
\nint main() {
\n ServerThreadPool pool(4, 8); \/\/ \u521d\u59cb 4 \u7ebf\u7a0b，\u6700\u5927 8 \u7ebf\u7a0b<\/p>\nstd::vector<std::future<int>> results;
\n std::random_device rd;
\n std::mt19937 gen(rd());
\n std::uniform_int_distribution<> dis(1, 100);<\/p>\n\/\/ \u6a21\u62df 50 \u4e2a HTTP \u8bf7\u6c42
\n for (int i = 0; i < 50; ++i) {
\n std::string url = "\/api\/request_" + std::to_string(i);
\n int priority = (i % 5 == 0) ? 10 : 1;
\n results.emplace_back(pool.enqueue_request(url, priority, [i, url, priority] {
\n std::this_thread::sleep_for(std::chrono::milliseconds(50 + (i % 3) * 20));
\n return 200;
\n }));
\n }<\/p>\n\/\/ \u76d1\u63a7
\n for (int i = 0; i < 5; ++i) {
\n std::cout << "Pending tasks: " << pool.get_pending_tasks()
\n << ", Allocated objects: " << pool.memory_pool.allocated() << std::endl;
\n std::this_thread::sleep_for(std::chrono::milliseconds(200));
\n }<\/p>\n\/\/ \u83b7\u53d6\u7ed3\u679c
\n for (size_t i = 0; i < results.size(); ++i) {
\n std::cout << "Request " << i << " status: " << results[i].get() << std::endl;
\n }<\/p>\nreturn 0;
\n} <\/p>\n\u7ec6\u8282\u89e3\u6790<\/p>\n
- \n
\u5185\u5b58\u6c60\u96c6\u6210：<\/p>\n
- \n
- \n
MemoryPool<HttpRequest> \u7ba1\u7406\u4efb\u52a1\u5bf9\u8c61，\u5206\u914d\/\u91ca\u653e\u9ad8\u6548\u3002<\/p>\n<\/li>\n
- \n
\u4efb\u52a1\u6267\u884c\u540e\u663e\u5f0f\u8c03\u7528\u6790\u6784\u5e76\u5f52\u8fd8\u5185\u5b58\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u65e0\u9501\u73af\u5f62\u7f13\u51b2\u533a：<\/p>\n
- \n
- \n
\u5b58\u50a8 HttpRequest*，\u914d\u5408\u5185\u5b58\u6c60\u907f\u514d\u52a8\u6001\u5206\u914d\u3002<\/p>\n<\/li>\n
- \n
\u5355\u5143\u7d20\u5165\u961f\/\u51fa\u961f，\u7b80\u5316\u5b9e\u73b0（\u53ef\u6269\u5c55\u4e3a\u6279\u91cf）\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u4f18\u5148\u7ea7\u8c03\u5ea6：<\/p>\n
- \n
- \n
\u9ad8\u4f18\u5148\u7ea7\u4efb\u52a1\u5206\u914d\u5230\u4efb\u52a1\u6700\u5c11\u7684\u961f\u5217\u3002<\/p>\n<\/li>\n
- \n
\u6279\u6b21\u5185\u6309\u4f18\u5148\u7ea7\u6392\u5e8f\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u52a8\u6001\u7ebf\u7a0b\u7ba1\u7406：<\/p>\n
- \n
- \n
\u961f\u5217\u6ee1\u65f6\u52a8\u6001\u589e\u52a0\u7ebf\u7a0b（\u6700\u591a max_threads_）\u3002<\/p>\n<\/li>\n
- \n
\u65b0\u7ebf\u7a0b\u81ea\u52a8\u521b\u5efa\u65b0\u961f\u5217\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u4efb\u52a1\u7a83\u53d6：<\/p>\n
- \n
- \n
\u6279\u91cf\u7a83\u53d6\u4efb\u52a1（\u6700\u591a 8 \u4e2a），\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u6027\u80fd\u76d1\u63a7：<\/p>\n
- \n
- \n
\u8ddf\u8e2a\u4efb\u52a1\u6570\u548c\u5185\u5b58\u6c60\u5206\u914d\u60c5\u51b5\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
\u8f93\u51fa\u793a\u4f8b<\/p>\n<\/p>\n
Thread 0 processed \/api\/request_0 (priority 10), status: 200
\nThread 1 processed \/api\/request_5 (priority 10), status: 200
\nThread 2 stole 2 tasks from queue 0
\nThread 2 processed \/api\/request_1 (priority 1), status: 200
\n…
\nPending tasks: 40, Allocated objects: 40
\nPending tasks: 30, Allocated objects: 30
\nPending tasks: 10, Allocated objects: 10
\nPending tasks: 0, Allocated objects: 0
\nRequest 0 status: 200
\n… <\/p>\n
\n\u4e09\u3001\u4f18\u5316\u4eae\u70b9\u4e0e\u573a\u666f\u9002\u914d<\/p>\n
1. \u5bf9\u521d\u5b66\u8005\u7684\u5e2e\u52a9<\/p>\n
- \n
- \n
\u5185\u5b58\u6c60：\u6e05\u6670\u5c55\u793a\u5982\u4f55\u907f\u514d\u52a8\u6001\u5206\u914d，\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<\/li>\n
- \n
\u7ebf\u7a0b\u6c60：\u670d\u52a1\u5668\u573a\u666f\u76f4\u89c2，\u6613\u4e8e\u7406\u89e3\u4efb\u52a1\u8c03\u5ea6\u3002<\/p>\n<\/li>\n
- \n
\u65e5\u5fd7：\u8be6\u7ec6\u8f93\u51fa\u4efb\u52a1\u6267\u884c\u548c\u5185\u5b58\u72b6\u6001，\u4fbf\u4e8e\u8c03\u8bd5\u3002<\/p>\n<\/li>\n<\/ul>\n
2. \u5bf9\u6709\u7ecf\u9a8c\u7a0b\u5e8f\u5458\u7684\u542f\u53d1<\/p>\n
- \n
- \n
\u5185\u5b58\u6c60：\u65e0\u9501\u8bbe\u8ba1\u9ad8\u6548，\u7f13\u5b58\u5bf9\u9f50\u4f18\u5316\u4f2a\u5171\u4eab\u3002<\/p>\n<\/li>\n
- \n
\u52a8\u6001\u8c03\u6574：\u7ebf\u7a0b\u6570\u6839\u636e\u8d1f\u8f7d\u81ea\u9002\u5e94，\u9002\u5408\u751f\u4ea7\u73af\u5883\u3002<\/p>\n<\/li>\n
- \n
\u6269\u5c55\u6027：<\/p>\n
- \n
- \n
\u53ef\u96c6\u6210 moodycamel::ConcurrentQueue \u63d0\u5347\u961f\u5217\u6027\u80fd\u3002<\/p>\n<\/li>\n
- \n
\u53ef\u6dfb\u52a0 hazard pointers \u89e3\u51b3\u6f5c\u5728 ABA \u95ee\u9898\u3002<\/p>\n<\/li>\n
- \n
\u53ef\u5b9e\u73b0\u6279\u91cf\u5165\u961f\/\u51fa\u961f\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
3. \u573a\u666f\u9002\u914d<\/p>\n
- \n
- \n
Web \u670d\u52a1\u5668：\u9ad8\u541e\u5410\u91cf\u3001\u4f4e\u5ef6\u8fdf，\u4f18\u5148\u7ea7\u8c03\u5ea6\u786e\u4fdd\u5173\u952e\u8bf7\u6c42\u4f18\u5148\u3002<\/p>\n<\/li>\n
- \n
\u5b9e\u65f6\u7cfb\u7edf：\u5185\u5b58\u6c60\u548c\u65e0\u9501\u961f\u5217\u9002\u5408\u4f4e\u5ef6\u8fdf\u573a\u666f\u3002<\/p>\n<\/li>\n
- \n
\u5927\u6570\u636e\u5904\u7406：\u52a8\u6001\u7ebf\u7a0b\u7ba1\u7406\u9002\u5e94\u8d1f\u8f7d\u6ce2\u52a8\u3002<\/p>\n<\/li>\n<\/ul>\n
\n\u56db\u3001\u8fdb\u4e00\u6b65\u4f18\u5316\u5efa\u8bae<\/p>\n
- \n
\u6279\u91cf\u64cd\u4f5c：<\/p>\n
- \n
- \n
\u6269\u5c55 MPMCRingBuffer \u652f\u6301\u6279\u91cf\u5165\u961f\/\u51fa\u961f\u3002<\/p>\n<\/li>\n
- \n
\u793a\u4f8b：<\/p>\n
cpp<\/p>\n<\/p>\n
bool enqueue_bulk(T* items, size_t count); <\/li>\n<\/ul>\n<\/li>\n
- \n
Hazard Pointers：<\/p>\n
- \n
- \n
\u89e3\u51b3\u961f\u5217\u6307\u9488\u7684 ABA \u95ee\u9898\u3002<\/p>\n<\/li>\n
- \n
\u793a\u4f8b：\u6bcf\u4e2a\u7ebf\u7a0b\u7ef4\u62a4 hazard pointer \u5217\u8868\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u7ebf\u7a0b\u672c\u5730\u5185\u5b58\u6c60：<\/p>\n
- \n
- \n
\u6bcf\u4e2a\u7ebf\u7a0b\u4e00\u4e2a\u5b50\u6c60，\u51cf\u5c11\u7ade\u4e89\u3002<\/p>\n<\/li>\n
- \n
\u793a\u4f8b：<\/p>\n
cpp<\/p>\n<\/p>\n
thread_local MemoryPool<HttpRequest> local_pool; <\/li>\n<\/ul>\n<\/li>\n
- \n
NUMA \u4f18\u5316：<\/p>\n
- \n
- \n
\u5206\u914d\u5185\u5b58\u5230\u672c\u5730 NUMA \u8282\u70b9\u3002<\/p>\n<\/li>\n
- \n
\u793a\u4f8b：\u4f7f\u7528 numa_alloc_onnode\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
\n\u4e94\u3001\u603b\u7ed3<\/p>\n
\u672c\u6848\u4f8b\u901a\u8fc7\u65e0\u9501\u5185\u5b58\u6c60\u548c\u4f18\u5316\u7684\u7ebf\u7a0b\u6c60，\u5c55\u793a\u4e86\u9ad8\u6027\u80fd Web \u670d\u52a1\u5668\u4efb\u52a1\u8c03\u5ea6\u7684\u5b9e\u73b0\u3002\u5185\u5b58\u6c60\u51cf\u5c11\u5206\u914d\u5f00\u9500，\u73af\u5f62\u7f13\u51b2\u533a\u548c\u4efb\u52a1\u7a83\u53d6\u63d0\u5347\u541e\u5410\u91cf，\u52a8\u6001\u7ebf\u7a0b\u7ba1\u7406\u9002\u5e94\u8d1f\u8f7d\u6ce2\u52a8\u3002\u521d\u5b66\u8005\u53ef\u4ee5\u5b66\u4e60\u5185\u5b58\u6c60\u548c\u7ebf\u7a0b\u6c60\u7684\u8bbe\u8ba1，\u6709\u7ecf\u9a8c\u7684\u7a0b\u5e8f\u5458\u53ef\u4ee5\u6269\u5c55\u6279\u91cf\u64cd\u4f5c\u6216 NUMA \u4f18\u5316\u3002<\/p>\n
\u5efa\u8bae\u8fd0\u884c\u4ee3\u7801，\u89c2\u5bdf\u5185\u5b58\u5206\u914d\u548c\u4efb\u52a1\u8c03\u5ea6\u8868\u73b0\u3002\u5982\u9700\u66f4\u5177\u4f53\u4f18\u5316（\u5982 hazard pointers \u5b9e\u73b0）\u6216\u9488\u5bf9\u5176\u4ed6\u573a\u666f（\u5982\u5b9e\u65f6\u7cfb\u7edf）\u7684\u8bbe\u8ba1，\u8bf7\u968f\u65f6\u544a\u77e5！<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250615001558-684e10be7ba37.png\")
<\/p>\n","protected":false},"excerpt":{"rendered":"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb713\u6b21\uff0c\u70b9\u8d5e11\u6b21\uff0c\u6536\u85cf10\u6b21\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u5185\u5b58\u6c60\u7684\u4f18\u5316\u5b9e\u73b0\uff0c\u4f5c\u4e3a\u65e0\u9501\u961f\u5217\u548c\u7ebf\u7a0b\u6c60\u7684\u5173\u952e\u7ec4\u4ef6\uff0c\u5e76\u7ed3\u5408\u4e00\u4e2a\u9488\u5bf9\u7279\u5b9a\u573a\u666f\u7684\u7ebf\u7a0b\u6c60\u8bbe\u8ba1\uff0c\u4ee5\u9ad8\u5e76\u53d1 Web \u670d\u52a1\u5668\u4efb\u52a1\u8c03\u5ea6\u4e3a\u4f8b\uff0c\u8fdb\u4e00\u6b65\u4f18\u5316\u6027\u80fd\u3002\u5185\u5b58\u6c60\u5c06\u89e3\u51b3\u52a8\u6001\u5206\u914d\u7684\u5f00\u9500\u548c\u788e\u7247\u95ee\u9898\uff0c\u7ebf\u7a0b\u6c60\u5c06\u96c6\u6210\u5185\u5b58\u6c60\u3001\u65e0\u9501\u73af\u5f62\u7f13\u51b2\u533a\u3001\u4efb\u52a1\u4f18\u5148\u7ea7\u3001\u4efb\u52a1\u7a83\u53d6\u7b49\u7279\u6027\uff0c\u9488\u5bf9\u670d\u52a1\u5668\u573a\u666f\u4f18\u5316\u541e\u5410\u91cf\u548c\u5ef6\u8fdf\u3002\u5185\u5b58\u6c60\u662f\u4e00\u79cd\u9884\u5206\u914d\u5185\u5b58\u7684\u673a\u5236\uff0c\u7528\u4e8e\u51cf\u5c11\u52a8\u6001\u5206\u914d\uff08\u5982 new\/delete\uff09\u7684\u5f00\u9500\u548c\u5185\u5b58\u788e\u7247\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u9488\u5bf9 Web \u670d\u52a1\u5668\u7684\u7ebf\u7a0b\u6c60\u5b9e\u73b0\uff0c\u96c6\u6210\u5185\u5b58\u6c60\u3001\u65e0\u9501\u73af\u5f62\u7f13\u51b2\u533a\u3001\u4f18\u5148\u7ea7\u8c03\u5ea6\u548c\u52a8\u6001\u7ebf\u7a0b\u7ba1\u7406\u3002<\/p>\n","protected":false},"author":2,"featured_media":43820,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,190],"topic":[],"class_list":["post-43821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-190"],"yoast_head":"\n
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