十四、信创与国产化类

  132. 鲲鹏/飞腾 ARM64 二进制兼容性

  病根:x86 的预编译 .so 直接放鲲鹏/飞腾跑 →illegal instruction;CRC32C/AES 指令集差异;不同厂商 ARM 微架构(鲲鹏 920
  vs 飞腾 2500)调优参数不同。

  # 必须源码编译,针对架构调优
  # 鲲鹏 920
  CFLAGS="-O3 -march=armv8-a+crc+crypto -mtune=tsv110 -fno-plt" \
  LDFLAGS="-Wl,-O1 -Wl,--as-needed" \
  ./configure --enable-swoole --enable-openssl \
              --enable-http2 --enable-mysqlnd \
              --enable-swoole-coro-time
  make -j$(nproc) && make install

  # 飞腾 2500
  CFLAGS="-O3 -march=armv8-a+crc -mtune=phytium-2500" ./configure ...

  # 通用兼容版本(性能略差,跨厂商可移植)
  CFLAGS="-O3 -march=armv8-a+crc" ./configure ...

  // 启动自检
  $arch = php_uname('m');
  if ($arch === 'aarch64') {
      $cpuinfo = file_get_contents('/proc/cpuinfo');
      if (str_contains($cpuinfo,'tsv110'))   $vendor = 'kunpeng';
      elseif (str_contains($cpuinfo,'FT-'))  $vendor = 'phytium';
      else $vendor = 'generic_arm64';
      Log::info("running on $vendor");
      // 按厂商动态调参
      if ($vendor==='kunpeng') Coroutine::set(['c_stack_size'=>512*1024]);
  }

  # Dockerfile:多架构镜像
  FROM --platform=$TARGETPLATFORM php:8.3-cli AS build
  ARG TARGETARCH
  RUN if [ "$TARGETARCH" = "arm64" ]; then \
          export CFLAGS="-O3 -march=armv8-a+crc"; \
      fi && \
      pecl install swoole
  # docker buildx build --platform linux/amd64,linux/arm64 -t myapp:v1 --push .

  133. 龙芯 LoongArch 缺 JIT 后端

  病根:PHP 8.x JIT 只支持 x86_64 + AArch64,LoongArch 需要关 JIT,纯 opcache 跑。

  ; loongarch.ini
  opcache.enable=1
  opcache.enable_cli=1
  opcache.memory_consumption=512
  opcache.max_accelerated_files=100000
  opcache.validate_timestamps=0
  opcache.preload=/app/preload.php
  opcache.preload_user=www-data
  opcache.jit=disable          ; 必须关
  opcache.huge_code_pages=0

  # 自动检测启用对应配置
  ARCH=$(uname -m)
  case "$ARCH" in
      x86_64|aarch64) cp /etc/php/conf.d/jit.ini /etc/php/conf.d/00-arch.ini ;;
      loongarch64)    cp /etc/php/conf.d/loong.ini /etc/php/conf.d/00-arch.ini ;;
      *)              echo "unsupported arch: $ARCH"; exit 1 ;;
  esac

  // 关键路径用 opcache + 手写优化代替 JIT
  // 例:热函数循环展开
  function hot_sum(array $a): int {
      $n = count($a); $r = 0; $i = 0;
      // 4-way 展开
      for (; $i+4 <= $n; $i += 4) $r += $a[$i]+$a[$i+1]+$a[$i+2]+$a[$i+3];
      for (; $i < $n; $i++) $r += $a[$i];
      return $r;
  }
  // 极致:写 C 扩展或 FFI
  // 龙芯生态 FFI 可用
  $ffi = FFI::cdef("long fast_sum(long *arr, long n);", "libfast.so");

  134. 麒麟/UOS 内核 epoll/io_uring 差异

  病根:麒麟 V10 SP2 内核 4.19,没 io_uring;UOS 10505.10,有 io_uring 但版本旧;Swoole 默认探测可能错配。

  # 内核能力检测
  uname -r
  grep -q "io_uring" /proc/kallsyms && echo "io_uring available" || echo "no io_uring"
  ls /proc/sys/kernel/io_uring_*  2>/dev/null

  // 启动按内核能力配置
  $kernel = (float)preg_replace('/^(\d+\.\d+).*/','$1', php_uname('r'));
  $ioUring = file_exists('/sys/kernel/debug/tracing/events/io_uring');

  $serverConf = [
      'reactor_num' => swoole_cpu_num(),
      'worker_num'  => swoole_cpu_num()*2,
  ];
  if ($kernel >= 5.10 && $ioUring) {
      // io_uring 加速文件 IO(Swoole 5.0+ 实验支持)
      $serverConf['enable_iouring'] = true;
      $serverConf['iouring_entries'] = 32768;
      $serverConf['iouring_workers'] = 4;
  } else {
      // 麒麟 4.19:用 aio thread pool 兜底
      $serverConf['aio_core_worker_num'] = 8;
      $serverConf['aio_worker_num']      = 32;
      $serverConf['aio_max_wait_time']   = 1.0;
  }
  $server->set($serverConf);

  # 麒麟 4.19 epoll 调优
  sysctl -w fs.epoll.max_user_watches=2097152
  sysctl -w net.core.somaxconn=65535

  135. 国产数据库驱动协程化缺失

  病根:达梦 dpiapi、人大金仓 libpq 国产分支、GBase libgci 都是同步阻塞 C 库,没协程化封装。

  // 通用方案:同步驱动连接池 + task_worker 桥接,对外暴露协程接口
  class SyncDbBridge {
      private Coroutine\Channel $idle;          // 连接池
      public function __construct(
          private string $type,                 // dm/kingbase/gbase
          private array  $config,
          private int    $size = 50,
      ){
          $this->idle = new Coroutine\Channel($size);
          for ($i=0; $i<$size; $i++) $this->idle->push($this->newConn());
      }
      private function newConn() {
          return match($this->type) {
              'dm'      => DM::connect($this->config),
              'kingbase'=> pg_connect($this->buildDsn()),
              'gbase'   => gci_connect(...$this->configArgs()),
          };
      }
      /** 协程 API:内部把同步调用塞 task_worker */
      public function query(string $sql, array $params=[]): array {
          $payload = ['driver'=>$this->type,'sql'=>$sql,'params'=>$params];
          $r = server()->taskCo([$payload], 30.0);
          if (!$r || !isset($r[0])) throw new \RuntimeException('db timeout');
          if (isset($r[0]['error'])) throw new \RuntimeException($r[0]['error']);
          return $r[0]['rows'];
      }
  }
  // task_worker 真正执行同步驱动
  $server->set(['task_worker_num'=>32,'task_enable_coroutine'=>false]);
  $server->on('Task', function($s,$id,$src,$d){
      static $conns = [];
      $key = $d['driver'];
      $conns[$key] ??= newSyncConn($d['driver']);
      try {
          $rows = syncQuery($conns[$key], $d['sql'], $d['params']);
          return ['rows'=>$rows];
      } catch(\Throwable $e) {
          unset($conns[$key]);                 // 失败重建
          return ['error'=>$e->getMessage()];
      }
  });

  // 进阶:每个 task_worker 独占连接池,协程级负载均衡
  class DriverWorkerPool {
      public function dispatch(array $payload): array {
          // 哈希到固定 worker,保证连接亲和性
          $wid = crc32($payload['shard'] ?? '') % server()->setting['task_worker_num'];
          return server()->taskCo([$payload], 30.0, $wid)[0];
      }
  }

  136. 国密 HSM 卡 PCIe 多 worker 争用

  病根:HSM 通常单卡,N 个 worker 都打开 /dev/hsm0,驱动内部锁竞争把吞吐拉到几百 QPS。

  /* hsm_proxy.c ——单一进程独占 HSM,worker 走共享内存请求 */
  typedef struct {
      _Atomic(uint32_t) seq;
      _Atomic(uint32_t) head, tail;
      struct {
          uint32_t  worker_id;
          uint32_t  op;        /* SM2_SIGN/SM4_ENC/... */
          uint32_t  in_len;
          uint8_t   in[4096];
          uint32_t  out_len;
          uint8_t   out[4096];
          _Atomic(uint8_t) state;  /* 0=空 1=请求 2=完成 */
      } slots[1024];
  } hsm_ring_t;

  class HsmClient {
      private $shm;
      public function __construct(){
          // 共享内存 ring buffer
          $this->shm = shmop_open(0xC001, 'w', 0, 0);
      }
      public function sm2Sign(string $msg, string $kid): string {
          $slot = $this->reserveSlot();
          // 写请求
          shmop_write($this->shm, pack('VVV',
              getmypid(), 1 /*SM2_SIGN*/, strlen($msg)).$msg, $slot*4096);
          // 等结果(协程 yield + 信号量)
          return $this->waitResult($slot, 1.0);
      }
  }
  // HSM 守护进程
  class HsmDaemon {
      public function run(){
          $hsm = hsm_open('/dev/hsm0');     // 全局唯一打开
          while (true) {
              $req = $this->ring->dequeue();  // 阻塞拉
              if (!$req) { usleep(100); continue; }
              $out = match($req->op) {
                  1 => hsm_sm2_sign($hsm, $req->in, $req->kid),
                  2 => hsm_sm4_encrypt($hsm, $req->in, $req->key),
              };
              $this->ring->respond($req, $out);
          }
      }
  }
  // 独立进程启动:systemctl start hsm-daemon

  // 简化版:worker 0 独占 HSM,其他 worker 通过 sendMessage 转发
  $server->on('PipeMessage', function($s,$src,$msg){
      if ($s->worker_id !== 0) return;
      $req = json_decode($msg, true);
      $sig = hsm_sm2_sign($req['msg'], $req['kid']);
      $s->sendMessage(json_encode(['rid'=>$req['rid'],'sig'=>$sig]), $src);
  });

  137. OpenEuler 调度器 ×Reactor 亲和

  病根:OpenEuler 默认 CFS 调度,Swoole Reactor 线程经常被抢占到不同核,缓存抖动;多虚拟机超线程拓扑识别不准。

  # 1) 开启高性能调度器(OpenEuler 22.03 SP3+)
  sysctl -w kernel.sched_autogroup_enabled=0      # 关 autogroup
  sysctl -w kernel.sched_migration_cost_ns=5000000

  # 2) 锁定 CPU 频率
  cpupower frequency-set -g performance

  # 3) 隔离核(启动参数)
  # /etc/grub.d/40_custom 加入:
  # isolcpus=8-15 nohz_full=8-15 rcu_nocbs=8-15

  // 程序内绑核 + IRQ 亲和
  class CoreAffinity {
      public static function bindReactor(int $reactorIdx){
          $cpu = 8 + $reactorIdx;          // 用隔离核 8-15
          $set = [$cpu];
          swoole_set_cpu_affinity($set);
          // 也调高优先级
          proc_nice(-10);
      }
  }
  $server->on('ManagerStart', function($s){
      // 拓扑:reactor 绑隔离核,worker 绑普通核
  });

  // 配合 IRQ 平衡
  // echo 0,1,2,3 > /proc/irq/网卡IRQ/smp_affinity_list

  # OpenEuler 特有:开 A-Tune 智能调优
  atune-adm tuning --project web_server --start

  138. 国产 AI 芯片 SDK 阻塞协程

  病根:寒武纪 cnrt、昇腾 ACL 都是同步阻塞 C API,跑推理时整个协程线程被卡。

  class NpuRunner {
      /** 推理走专属 worker 池,避免阻塞 reactor */
      public function infer(string $modelId, array $tensorData): array {
          $payload = ['model'=>$modelId,'data'=>$tensorData];
          // 哈希到固定 worker,模型预加载亲和
          $wid = crc32($modelId) % $this->npuWorkerNum();
          $r = server()->taskCo([$payload], 5.0, $wid);
          return $r[0];
      }
  }

  // task_worker 启动时预加载模型
  $server->set([
      'task_worker_num' => 8,                    // 等于 NPU 卡数
      'task_enable_coroutine' => false,          // 同步驱动不开协程
  ]);
  $server->on('WorkerStart', function($s,$wid){
      if ($s->taskworker) {
          // 寒武纪:每 task_worker 绑一张 MLU 卡
          $card = $wid - $s->setting['worker_num'];
          cnrtSetDevice($card);
          ModelCache::preload($card);
      }
  });
  $server->on('Task', function($s,$id,$src,$d){
      $model = ModelCache::get($d['model']);
      return $model->infer($d['data']);
  });

  /* 进阶:FFI + 异步 NPU 队列 */
  // 寒武纪 cnrtQueue 可异步提交
  cnrtQueue_t q;
  cnrtQueueCreate(&q);
  cnrtMemcpyAsync(dev_ptr, host_ptr, n, q, CNRT_MEM_TRANS_DIR_HOST2DEV);
  cnrtInvokeRuntimeContext_V2(ctx, params, q, NULL);
  cnrtMemcpyAsync(host_out, dev_out, m, q, CNRT_MEM_TRANS_DIR_DEV2HOST);
  // 协程侧 yield 等 cnrtQueueSync 完成(用 eventfd 桥接到 epoll)

  139. 信创办 SBOM 合规

  病根:信创软件供应链要求每个组件可追溯(NTIA SBOM 标准),Swoole + 一堆 PECL 扩展 + composer 包 + 系统库,源头不清。

  # 生成 SBOM(SPDX 格式)
  # PHP 扩展层
  syft scan dir:/usr/lib/php/modules -o spdx-json > sbom-php-ext.json

  # composer 依赖
  composer licenses --format=json > sbom-composer.json

  # 系统库
  syft scan dir:/usr/lib/x86_64-linux-gnu -o spdx-json > sbom-syslib.json

  # 容器整体
  syft scan myapp:v1 -o spdx-json > sbom-image.json

  # 漏洞扫描
  grype sbom:./sbom-image.json --fail-on high

  # CI 集成(信创入场必查)
  # .gitlab-ci.yml
  sbom:
    stage: security
    script:
      - syft scan . -o cyclonedx-json > bom.json
      - grype bom:bom.json --fail-on critical
      - cosign attest --predicate bom.json --type cyclonedx myapp:v1
    artifacts:
      paths: [bom.json]

  // 程序内自描述 SBOM
  class SBOMReport {
      public static function generate(): array {
          return [
              'name'    => 'myapp',
              'version' => env('APP_VERSION'),
              'components' => [
                  ['name'=>'php','version'=>PHP_VERSION,'license'=>'PHP-3.01'],
                  ['name'=>'swoole','version'=>SWOOLE_VERSION,'license'=>'Apache-2.0'],
                  ...self::scanComposer(),
                  ...self::scanExtensions(),
              ],
              'sha256' => hash_file('sha256', PHP_BINARY),
          ];
      }
  }

  140. 等保三级测评 PHP+Swoole 整改项

  病根:等保三级 8 大控制要求里,PHP+Swoole 在身份鉴别、访问控制、安全审计、可信验证 4 项最容易踩雷。

  class L3Compliance {
      /** 8.1.4.1 身份鉴别:双因素 + 强密码 */
      public static function authVerify(string $user, string $pwd, string $otp): bool {
          if (strlen($pwd) < 12)                       return false;
          if (!preg_match('/[A-Z]/',$pwd))              return false;
          if (!preg_match('/[a-z]/',$pwd))              return false;
          if (!preg_match('/[0-9]/',$pwd))              return false;
          if (!preg_match('/[^A-Za-z0-9]/',$pwd))       return false;
          if (!password_verify($pwd, UserStore::hash($user))) return false;
          // 第二因素 TOTP
          return totp_verify(UserStore::otpSecret($user), $otp);
      }
      /** 8.1.4.2 访问控制:RBAC + 最小权限 */
      public static function checkAccess(int $uid, string $resource, string $action): bool {
          $roles = RbacStore::userRoles($uid);
          foreach ($roles as $role) {
              if (RbacStore::can($role, $resource, $action)) return true;
          }
          AuditLog::write(['event'=>'access_denied','uid'=>$uid,'res'=>$resource]);
          return false;
      }
      /** 8.1.4.3 安全审计:不可篡改 + 集中存储 */
      public static function auditLog(array $rec){
          // 国密 SM3 链式哈希
          static $prevHash = '';
          $rec['prev_hash'] = $prevHash;
          $rec['ts_ns']     = hrtime(true);
          $rec['nonce']     = bin2hex(random_bytes(16));
          $hash = hash('sm3', json_encode($rec));
          $prevHash = $hash;
          // 落盘 + 同步到独立审计服务器
          AuditChannel::push(json_encode($rec + ['hash'=>$hash]));
      }
      /** 8.1.4.6 可信验证:启动时校验关键文件 */
      public static function trustedBoot(): bool {
          $manifest = json_decode(file_get_contents('/etc/app/trusted.json'), true);
          foreach ($manifest['files'] as $path => $expected) {
              if (hash_file('sm3', $path) !== $expected) {
                  Log::critical("trust violation: $path");
                  return false;
              }
          }
          return true;
      }
  }
  // 启动入口
  if (!L3Compliance::trustedBoot()) exit(1);
  $server->on('request', function($req,$resp){
      SafeGo::go(function() use($req,$resp){
          if (!L3Compliance::authVerify(...)) abort(401);
          if (!L3Compliance::checkAccess(...)) abort(403);
          L3Compliance::auditLog([...]);
          handleBiz($req,$resp);
      });
  });

  # 操作系统侧:等保 OS 加固
  # 1) 禁用不必要服务
  systemctl disable bluetooth cups avahi-daemon
  # 2) 强制 SELinux/AppArmor enforce
  setenforce 1
  # 3) 内核参数加固
  sysctl -w kernel.kptr_restrict=2
  sysctl -w kernel.dmesg_restrict=1
  sysctl -w kernel.yama.ptrace_scope=2
  # 4) 文件完整性 AIDE
  aide --init && cp /var/lib/aide/aide.db.new /var/lib/aide/aide.db

  ---
  十五、AI 集成类

  141. 大模型推理阻塞 Reactor

  病根:直接 cURL 调本地/远端 LLM,几秒到几十秒返回,把协程占着不放,堆积。

  class LlmClient {
      /** 用 cURL hook 后协程化的 stream,不阻塞 reactor */
      public function chat(string $prompt, float $timeout=60.0): string {
          $cli = new Coroutine\Http\Client('llm.local', 8000);
          $cli->setHeaders(['Content-Type'=>'application/json']);
          $cli->set(['timeout'=>$timeout]);
          $cli->post('/v1/chat', json_encode([
              'model'=>'qwen2-72b',
              'messages'=>[['role'=>'user','content'=>$prompt]],
              'stream'=>false,
          ]));
          $body = $cli->getBody();
          $cli->close();
          return json_decode($body, true)['choices'][0]['message']['content'];
      }
      /** 长任务隔离到专属 worker 池,避免占用业务协程 */
      public function chatAsync(string $prompt): int {
          $taskId = bin2hex(random_bytes(8));
          server()->task(['type'=>'llm','prompt'=>$prompt,'tid'=>$taskId]);
          return $taskId;
      }
  }
  // 限流 + 排队(防 LLM 过载)
  class LlmGateway {
      private Coroutine\Channel $sem;
      public function __construct(int $maxConcurrent=64){
          $this->sem = new Coroutine\Channel($maxConcurrent);
          for ($i=0;$i<$maxConcurrent;$i++) $this->sem->push(1);
      }
      public function call(callable $fn, float $timeout=60){
          if (!$this->sem->pop(1.0)) throw new \RuntimeException('llm overload');
          try { return $fn(); }
          finally { $this->sem->push(1); }
      }
  }

  142. 流式响应背压

  病根:LLM 流式输出比客户端消费快,发送缓冲爆炸。

  class StreamingChat {
      public function handle(Swoole\Http\Request $req, Swoole\Http\Response $resp){
          $resp->header('Content-Type','text/event-stream');
          $resp->header('Cache-Control','no-cache');
          $resp->header('X-Accel-Buffering','no');

          $cli = new Coroutine\Http\Client('llm.local', 8000);
          $cli->set(['timeout'=>-1]);
          $cli->setHeaders(['Content-Type'=>'application/json']);
          $cli->setMethod('POST');
          $cli->setData(json_encode([
              'prompt'=>$req->post['prompt'],
              'stream'=>true,
          ]));
          $cli->execute('/v1/chat');

          while ($chunk = $cli->recv()) {
              // 关键:write 失败说明客户端慢/断
              if ($resp->write("data: $chunk\n\n") === false) {
                  Log::warn('client slow/disconnected, abort llm');
                  break;       // 主动断开 LLM 请求
              }
              // 监控发送缓冲,超阈值 sleep 让出
              $info = $resp->socket->getsockopt(SOL_SOCKET, SO_NWRITE) ?? 0;
              if ($info > 1024*1024) Coroutine::sleep(0.01);
          }
          $cli->close();
          $resp->end();
      }
  }

  // WebSocket 流式:用 Swoole buffer watermark
  $server->set([
      'send_yield' => true,
      'buffer_high_watermark' => 4*1024*1024,
      'buffer_low_watermark'  => 1*1024*1024,
  ]);
  $server->on('BufferFull', fn($s,$fd)=> Log::warn("ws $fd back pressure"));

  143. 张量序列化协程零拷贝

  病根:tensor 数据几 MB 一个,json_encode 把 zval 全拷一遍,内存翻倍。

  class TensorMessage {
      /** 用二进制 + 共享内存避免拷贝 */
      public function pack(array $tensor, string $dtype, array $shape): string {
          // 头:dtype(8B) + rank(4B) + shape(rank*4B) + length(4B)
          $hdr = str_pad($dtype, 8, "\0").pack('V', count($shape));
          foreach ($shape as $d) $hdr .= pack('V',$d);
          // body:直接 pack 二进制(FFI/SplFixedArray 更省)
          $bin = pack('f*', ...$tensor);
          $hdr .= pack('V', strlen($bin));
          return $hdr.$bin;
      }
      public function unpack(string $raw): array {
          $dtype = trim(substr($raw,0,8),"\0");
          $rank  = unpack('V', substr($raw,8,4))[1];
          $shape = array_values(unpack('V*', substr($raw,12,$rank*4)));
          $len   = unpack('V', substr($raw,12+$rank*4,4))[1];
          $bin   = substr($raw, 16+$rank*4, $len);
          return ['dtype'=>$dtype,'shape'=>$shape,'data'=>$bin];
      }
  }
  // 协程间传递只传句柄,不传数据
  class TensorRegistry {
      private static array $store = [];
      public static function put(string $bin): string {
          $id = bin2hex(random_bytes(8));
          self::$store[$id] = $bin;
          return $id;
      }
      public static function take(string $id): string {
          $b = self::$store[$id] ?? '';
          unset(self::$store[$id]);
          return $b;
      }
  }
  // channel 只 push id
  $ch->push(TensorRegistry::put($binTensor));
  // 消费侧
  $bin = TensorRegistry::take($ch->pop());

  144. ONNX Runtime 线程模型冲突

  病根:ONNX Runtime 内部用 OpenMP/线程池,与 Swoole 协程线程并存时争 CPU,性能反而下降。

  class OnnxSession {
      public function __construct(string $modelPath, int $intraThreads=1, int $interThreads=1){
          $opts = OnnxRuntime::sessionOptions();
          // 关键:限制 ORT 内部线程,让 Swoole worker 控制并发
          $opts->setIntraOpNumThreads($intraThreads);    // 单算子内部线程
          $opts->setInterOpNumThreads($interThreads);    // 算子间并行
          $opts->setExecutionMode('sequential');
          $opts->setGraphOptimizationLevel('all');
          $this->session = new OnnxSession($modelPath, $opts);
      }
  }

  // 配合 task_worker:每 worker 1 个会话,单线程
  $server->set([
      'task_worker_num' => swoole_cpu_num(),    // = 物理核
      'task_enable_coroutine' => false,
  ]);
  $server->on('WorkerStart', function($s,$wid){
      if ($s->taskworker) {
          $core = $wid - $s->setting['worker_num'];
          // 绑核
          swoole_set_cpu_affinity([$core]);
          // 每个 task_worker 1 个 ORT 会话,单线程跑(避免线程池争用)
          $GLOBALS['ort'] = new OnnxSession('/models/m.onnx', 1, 1);
      }
  });
  $server->on('Task', function($s,$id,$src,$d){
      return $GLOBALS['ort']->run($d['inputs']);
  });

  145. GPU/NPU 显存生命周期 ×zval

  病根:PHP 的 zval refcount 管不到显存;zval 释放时显存没释放→OOM;提前释放→野指针。

  /* gpu_zval.c ——自定义资源类型 */
  #include "Zend/zend_API.h"

  typedef struct {
      void   *dev_ptr;       // GPU/NPU 显存指针
      size_t  bytes;
      int     device_id;
      int    (*free_fn)(void*);  // cudaFree / cnrtFree / aclrtFree
  } gpu_buf_t;

  static int le_gpu_buf;

  static void gpu_buf_dtor(zend_resource *res) {
      gpu_buf_t *b = (gpu_buf_t*)res->ptr;
      if (b->dev_ptr) b->free_fn(b->dev_ptr);
      efree(b);
  }

  PHP_FUNCTION(gpu_alloc) {
      zend_long bytes;
      ZEND_PARSE_PARAMETERS_START(1,1) Z_PARAM_LONG(bytes) ZEND_PARSE_PARAMETERS_END();
      gpu_buf_t *b = emalloc(sizeof(*b));
      cudaMalloc(&b->dev_ptr, bytes);
      b->bytes = bytes; b->free_fn = cudaFree;
      RETURN_RES(zend_register_resource(b, le_gpu_buf));
  }
  // PHP_MINIT 注册:le_gpu_buf = zend_register_list_destructors_ex(gpu_buf_dtor,...);

  // PHP 用法
  $buf = gpu_alloc(1024 * 1024 * 100);   // 100MB 显存
  gpu_memcpy_h2d($buf, $hostData);
  $out = onnx_run_gpu($buf);
  unset($buf);   // 自动 free,refcount 安全

  // 协程间共享:用 WeakReference 避免循环引用
  class GpuTensor {
      public $resource;
      public function __destruct(){ /* gpu_buf_dtor 自动调 */ }
  }
  go(function() use($tensor){
      $weak = WeakReference::create($tensor);
      Coroutine::sleep(1);
      if ($t = $weak->get()) infer($t);  // 主流程已释放则跳过
  });

  146. AI 批处理 batching 协调

  病根:单条推理 NPU 利用率低,要 batching;但协程异步触发时机不齐,攒不够 batch 又不能等太久。

  class DynamicBatcher {
      private Coroutine\Channel $reqCh;
      private array $waiters = [];        // tid => Channel(响应)
      public function __construct(
          private int   $maxBatch = 32,
          private float $maxWaitMs = 10,    // 最多等 10ms
      ){
          $this->reqCh = new Coroutine\Channel(1024);
          Coroutine::create(fn()=> $this->loop());
      }
      public function infer(array $input): array {
          $tid = bin2hex(random_bytes(8));
          $resp = new Coroutine\Channel(1);
          $this->waiters[$tid] = $resp;
          $this->reqCh->push(['tid'=>$tid,'input'=>$input]);
          $r = $resp->pop(30);
          unset($this->waiters[$tid]);
          return $r;
      }
      private function loop(){
          while (true) {
              $batch = []; $deadline = microtime(true) + $this->maxWaitMs/1000;
              // 收集到 maxBatch 或超时
              while (count($batch) < $this->maxBatch && microtime(true) < $deadline) {
                  $rem = max(0, $deadline - microtime(true));
                  $req = $this->reqCh->pop($rem);
                  if ($req === false) break;
                  $batch[] = $req;
              }
              if (!$batch) continue;
              // 拼成 batch 推理
              $inputs = array_column($batch,'input');
              $outputs = NpuRunner::batchInfer($inputs);
              // 分发结果
              foreach ($batch as $i=>$req) {
                  if (isset($this->waiters[$req['tid']]))
                      $this->waiters[$req['tid']]->push($outputs[$i]);
              }
          }
      }
  }

  147. Continuous Batching 在 PHP 盲区

  病根:vLLM/TensorRT-LLM 这类引擎已实现 continuous batching(动态拼接不同长度请求),PHP 侧没法控制 KV cache。

  // PHP 侧不实现 continuous batching,转发到专业推理服务
  class ContinuousBatchClient {
      /** 用 gRPC 流式接 vLLM/TensorRT-LLM */
      public function generateStream(string $prompt, callable $onToken){
          $cli = new Coroutine\Http2\Client('vllm.local', 8001);
          $cli->set(['timeout'=>-1]);
          $cli->connect();
          $req = new Swoole\Http2\Request;
          $req->method = 'POST';
          $req->path   = '/v2/models/llama/generate_stream';
          $req->headers = ['content-type'=>'application/json'];
          $req->data    = json_encode([
              'inputs'=>$prompt,
              'parameters'=>['max_new_tokens'=>512,'streaming'=>true]
          ]);
          $req->pipeline = true;
          $sid = $cli->send($req);
          while ($resp = $cli->recv(-1)) {
              $token = json_decode($resp->data, true)['token']['text'] ?? '';
              if ($token === '') continue;
              if ($onToken($token) === false) break;
              if ($resp->pipeline_id == 0) break;
          }
          $cli->close();
      }
  }
  // 业务层
  $cb = new ContinuousBatchClient;
  $cb->generateStream($prompt, function($tok) use($resp){
      return $resp->write("data: $tok\n\n") !== false;   // 客户端断开返回 false
  });

  # 部署:vLLM as a service
  # docker run -d --gpus all -p 8001:8000 vllm/vllm-openai:latest \
  #   --model qwen2-72b --tensor-parallel-size 4 \
  #   --max-num-batched-tokens 8192 --max-num-seqs 256

  148. 向量数据库连接池协程绑定

  病根:Milvus/PGVector 客户端有自己的连接管理,协程 yield 后连接归属错乱;查询返回大向量内存爆。

  class VectorPool {
      private Coroutine\Channel $idle;
      public function __construct(string $type, array $cfg, int $size=20){
          $this->idle = new Coroutine\Channel($size);
          for ($i=0;$i<$size;$i++) $this->idle->push($this->build($type,$cfg));
      }
      private function build(string $type, array $cfg) {
          return match($type) {
              'milvus' => new MilvusClient($cfg['host'],$cfg['port']),
              'pgvec'  => new \PDO("pgsql:host={$cfg['host']};dbname={$cfg['db']}",
                                   $cfg['user'],$cfg['pwd']),
          };
      }
      public function search(string $coll, array $vec, int $topk=10): array {
          $c = $this->idle->pop(2.0);
          if (!$c) throw new \RuntimeException('vector pool exhausted');
          try {
              $r = $c->search($coll, [$vec], $topk);
              // 流式处理避免大返回内存爆
              $out = [];
              foreach ($r->iterator() as $hit) {
                  $out[] = ['id'=>$hit->id,'score'=>$hit->score];
                  if (count($out) >= $topk) break;
              }
              return $out;
          } finally {
              $this->idle->push($c);
          }
      }
  }

  // PGVector 走 PDO,注意类型
  class PgVectorClient {
      public function search(string $table, array $vec, int $topk=10): array {
          $vecLit = '['.implode(',',$vec).']';
          $sql = "SELECT id, embedding <=> :v::vector AS dist
                  FROM {$table} ORDER BY dist LIMIT :k";
          $stmt = $this->pdo->prepare($sql);
          $stmt->bindValue(':v', $vecLit);
          $stmt->bindValue(':k', $topk, \PDO::PARAM_INT);
          $stmt->execute();
          return $stmt->fetchAll(\PDO::FETCH_ASSOC);
      }
  }

  ---
  串联流程:信创 + AI 集成基础设施骨架

  class XCStack {
      public function bootstrap(){
          // 1) 架构自检 + 内核能力探测(#132,#133,#134)
          $arch = php_uname('m');
          $kernel = (float)preg_replace('/^(\d+\.\d+).*/','$1', php_uname('r'));
          $serverConf = $this->detectServerConf($arch, $kernel);

          // 2) 等保三级启动(#140)
          if (!L3Compliance::trustedBoot()) exit(1);

          // 3) 数据库桥(#135)
          $this->dmPool = new SyncDbBridge('dm', [...], 50);
          $this->kbPool = new SyncDbBridge('kingbase', [...], 50);

          // 4) HSM 守护(#136)—单 worker 独占
          // 5) NPU runner(#138)—哈希到固定 worker
          // 6) 向量库连接池(#148)
          $this->vecPool = new VectorPool('milvus', [...], 20);

          // 7) AI 限流 + 批处理(#141,#146)
          $this->llmGate = new LlmGateway(64);
          $this->batcher = new DynamicBatcher(32, 10);
      }
  }

  class AiServer {
      public function start(){
          $server = new Swoole\Http\Server('0.0.0.0', 9501);
          $server->set([
              'worker_num' => swoole_cpu_num()*2,
              'task_worker_num' => swoole_cpu_num()*2,    // DB桥+HSM+NPU共用
              'task_enable_coroutine' => false,
              'reload_async' => true,
              'enable_iouring' => true,                   // 内核够新才开
          ]);

          $server->on('WorkerStart', function($s,$wid){
              if ($s->taskworker) {
                  // task_worker 分类绑定:DB / HSM / NPU
                  $taskWid = $wid - $s->setting['worker_num'];
                  $this->initTaskWorker($taskWid);
              } else {
                  CoreAffinity::bindReactor($wid);                  // #137
              }
          });

          $server->on('request', function($req,$resp) use($server){
              SafeGo::go(function() use($req,$resp,$server){
                  $u = $req->server['request_uri'];
                  match (true) {
                      $u==='/chat'         => $this->chat($req,$resp),                  // #141
                      $u==='/chat/stream'  => (new StreamingChat)->handle($req,$resp), // #142
                      $u==='/embed'        => $this->embed($req,$resp),                 // #146
                      $u==='/vec/search'   => $this->vecSearch($req,$resp),             // #148
                      str_starts_with($u,'/db/') => $this->db($req,$resp),              // #135
                      default => $resp->status(404)->end(),
                  };
              });
          });

          $server->on('Task', function($s,$id,$src,$d){
              return match($d['type']) {
                  'dm','kingbase' => syncDbExec($d),
                  'hsm'           => hsmOp($d),
                  'npu'           => npuInfer($d),
                  'onnx'          => $GLOBALS['ort']->run($d['inputs']),
              };
          });

          $server->start();
      }

      private function chat($req,$resp){
          $r = $this->llmGate->call(fn()=>
              (new LlmClient)->chat($req->post['prompt']));
          $resp->end(json_encode(['text'=>$r]));
      }
      private function embed($req,$resp){
          $vec = $this->batcher->infer($req->post['text']);
          $resp->end(json_encode(['vector'=>$vec]));
      }
      private function vecSearch($req,$resp){
          $hits = $this->vecPool->search('docs', $req->post['vector'], 10);
          $resp->end(json_encode($hits));
      }
  }

  # 编译信创版本
  ARCH=$(uname -m)
  case "$ARCH" in
      aarch64)     CFLAGS="-O3 -march=armv8-a+crc -mtune=tsv110" ;;   # 鲲鹏
      loongarch64) CFLAGS="-O3 -march=loongarch64" ;;                  # 龙芯
      *)           CFLAGS="-O3" ;;
  esac
  export CFLAGS

  # Swoole + 国密 + ORT
  pecl install swoole
  git clone https://github.com/openssl/openssl-gm && make install
  pip install onnxruntime
  # 国产数据库驱动
  yum install -y dpiapi-devel kingbase-devel gbase8s-devel
  pecl install pdo_dameng

  # SBOM(#139
  syft scan myapp:v1 -o spdx-json > sbom.json
  grype sbom:sbom.json --fail-on high

  # 部署
  systemctl enable hsm-daemon              # #136
  systemctl enable vllm-server             # #147
  docker run -d --gpus all vllm/vllm-openai

  大白话总结

  - 信创国产化(132-140):核心是"按架构源码编译 + 内核能力探测开关 io_uring + 同步驱动通过 task_worker 桥接成协程友好 +
  HSM/NPU 用专属 worker 池避免争用 + SBOM 全链路扫描 + 等保三级 4
  大整改项落地到代码"。这一套做齐才能真正过信创入场和等保测评。
  - AI 集成(141-148):核心是"长任务必走专属 worker 池或限流 channel,不阻塞 reactor + 流式背压用 send_yield + write
  返回值检测 + 张量传句柄不传数据 + ONNX/NPU SDK 单线程化绑核避免线程池争用 + GPU 显存挂自定义 zval 资源类型 + Dynamic
  Batching 攒批 + Continuous Batching 直接转发 vLLM"。这套做完,PHP 也能稳跑大模型推理网关、向量检索、信创 AI 服务。

  把这两层固化进基础设施,业务侧只剩"接 API + 写 prompt + 落库"三件事,所有信创和 AI 的坑都被兜住。
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