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- ROADMAP, MEASUREMENTS and ARCHITECTURE are rewritten as summaries (333 KB of index text -> 84 KB). ROADMAP's phase table is one line per phase plus a link; MEASUREMENTS keeps headline numbers under its old §1-§13 numbering (plus §14-§16 for P6.5, P7 and P12); ARCHITECTURE keeps every decided rule under the same §1-§17 / appendix numbering, so the `ARCHITECTURE.md §N` references in code still land, and §17 becomes an index of the phase landing shapes. - CURRENT_STAGE_PROGRESS now describes the current stage (the P12 on-screen-server subset) and absorbs CURRENT_STAGE_STATUS, which is removed. The P7 status tables, the P6 closing snapshot and the P6.5 first-wave snapshot move to notes/p7, notes/p6 and notes/p65. - Each phase gets notes/<phase>/README.md: a short summary, then the verbatim material that left the index documents (its ROADMAP row, its MEASUREMENTS section with subsection numbers kept, its ARCHITECTURE §17 part, milestones) and a file index. P8-P11 and P13 get their planned scope; the full open-question list moves to notes/OPEN-QUESTIONS.md. - The phase reports that sat at the top level move into their phase folders with unchanged names: P5D-INPROC-PERFORMANCE, P5E-RUNAHEAD, P5F-WIRE-COMPLETENESS, P6-SPAWN-PLAN, P6-CONTRACT-DRAFT, P6-ENDSTATE-REVIEW. Their relative links, CONTRACT-P6.md's links to them and one tool docstring are updated; notes/README.md maps every old path and section number to its new place. - 71 files under notes/recovered/ that were byte-identical copies of phase-folder files are removed. - Corrections made while condensing: the server process reads Transport as Spawn (CONTRACT-P6 §3.1 amended the old "child forces monolith" rule); both backends now publish kCapRunAheadApply; MOBILEGL_IPC_RESPAWN is a named refusal and MOBILEGL_IPC_IDLE_EXIT_S is not parsed; the Redmi pin row is in tools/device_bench/pin_device.sh. check_doc_citations over docs/Disaggregated/*.md: 0 problems. No relative link is newly broken.
16 lines
2.2 KiB
Markdown
16 lines
2.2 KiB
Markdown
# P9 — 反向通道（待排，P6.5 之后）
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> 尚未开工。本页保存该阶段在路线图上的完整范围与出口门（2026-09-24 从 [`ROADMAP.md`](../../ROADMAP.md) 阶段表移入，原文照录）；阶段开工后，计划、裁定与报告都放在本目录。
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## 摘要
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- 异步 reply 语义，建立在 P6.5 的消息式 reply 之上；2 MiB reply cap 与 chunked readback（ID-47）；PACK-PBO 回读 fire-and-forget（ID-57）；武装剩余回调（`OnTextureWriteback`、`OnTexturePullRequest`、`OnMipLevelsGenerated`、`OnLog` 分级）；`OnGlError` 有序；纹理拉取缓解 + 终止符；XFB 命名空间（`DeleteTransformFeedback`）。
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- 门：回读 / XFB 场景在 split 下绿；`TextureRemintPullScenario`；拉取计数逐 trace 发布；两条故障注入。
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## 阶段表行（原 `ROADMAP.md`）
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- **阶段**：**P9** 反向通道
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- **状态**：待排，**P6.5 之后**（2026-09-22 重定范围）
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- **落地什么 / 范围**：**异步 reply 语义**，机制建立在 P6.5 的消息式 reply 之上（不再造 `SEG_REPLY` slot 池——池今天就有，stream 链路会删它）；2 MiB reply cap 与 chunked readback（契约 §10.2.3 从 P6 改判至此，ID-47）；PACK-PBO 回读 fire-and-forget + client 侧 `MarkGpuWritten`（ID-57，P6 未做）；十个回调里未武装的四个：`OnTextureWriteback`、`OnTexturePullRequest`、`OnMipLevelsGenerated`、`OnLog` 分级（`OnXfbScatterReady` 是零生产者、零消费者、无 EventKind 的死声明——随 P3b/P4b 删除，`kMGPipeCallbackCount` 10→9；`ClientSession.cpp:429`；`OnBufferWriteback` / `OnGpuWritten` / `OnSurfaceChanged` / `OnGlError` / `OnCapsInvalidated` 已武装）；`OnGpuWritten` 收窄；`OnBufferWriteback` 批处理 + epoch 排序；`OnGlError` 有序（CONTRACT-P5C §4.2）；纹理拉取四条缓解 + 终止符；XFB 命名空间（`DeleteTransformFeedback` 的 server 侧泄漏——按裁定无行、最后两个 class-C 之一）。~~`SEG_EVENT` 溢出策略~~ 机制已由 P5e 落地（`ARCHITECTURE.md` §11.7），剩余的"不排空对端杀宿主"归 Ph
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- **验收门 / 证据**：回读 / XFB 场景在 split 下绿；`TextureRemintPullScenario`（含无解用例）；拉取计数逐 trace 发布；两条故障注入
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