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    <title>并发调度 on Latent</title>
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      <title>DeepSeek Harness 源码解读 · 02 | 工具执行流水线：循环不变，把关全在流水线里</title>
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      <description>工具不是直接执行，而是过一条带把关的流水线：tool/call 事件先于执行被记录，再依次经过 pre-execute 瀑布（钩子·权限·沙箱）、单调守卫、execute 瀑布（超时·重试·指标）、工具本体、post-execute 瀑布、finalizeContent，最终冻结为 tool/result 事件。并发层用独占屏障 + 有界并行池 + 模型序提交编排多工具，abort 时合成 TOOL_ABORTED_BEFORE_DISPATCH 保证 replay 有效。配流水线图。</description>
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