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Fix timer bounds and ACP teardown ownership

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pku-xht
2026-08-05 05:24:23 +08:00
parent 075b6b0756
commit 0ccd847ef3
36 changed files with 130 additions and 96 deletions
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8
packages/subagent/subagent-acp/README.md
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@@ -14,7 +14,7 @@ The returned run id is minted in the parent namespace. The child server's sessio
After publication, the provider sends the prompt and collects streamed `agent_message_chunk` text into `SubagentResult.output`. A prompt/transport failure resolves with `stopReason: 'error'`, or `aborted` when the required request signal or disposal requested cancellation.
`dispose()` is idempotent. It removes the signal listener, requests ACP cancellation when possible, then runs this backend's own teardown ladder (`disposeAcpChild`) over the seam's verbs: close stdin and wait `disposeEofGraceMs` for cooperative quiescence, then the handle's `terminate()` escalation (SIGTERM, the spawn grace, SIGKILL — Windows force-terminates directly), then a bounded whole-tree exit wait that rejects if survivors remain. Every run uses a fresh process; process pooling is not implemented.
`dispose()` is idempotent. It removes the signal listener, requests ACP cancellation when possible, then runs this backend's own teardown ladder (`disposeAcpChild`) over the seam's verbs: close stdin and wait `disposeEofGraceMs` for cooperative quiescence, then invoke the handle's `terminate()` escalation (SIGTERM, the spawn grace, SIGKILL — Windows force-terminates directly) and await the subprocess owner's whole-tree exit proof. Every run uses a fresh process; process pooling is not implemented.
## Capabilities and context
@@ -30,8 +30,8 @@ ACP advertises no start-time capabilities because this process cannot enforce th
| `cwd` | parent session cwd | Working-directory override for the child process and its ACP session; must be non-empty, a relative value resolves against the harness launch directory at load, and the result must name a directory the harness can enter. |
| `permission` | `reject` | Auto-answer permission requests by rejecting or choosing the first allow-shaped option. |
| `env` | `{}` | Explicit child environment layered over a credential-scrubbed parent environment. |
| `disposeEofGraceMs` | `6000` | Grace after stdin EOF before platform termination. |
| `disposeGraceMs` | `3000` | Exit-confirmation grace after termination; POSIX also waits this long after SIGTERM before SIGKILL. |
| `disposeEofGraceMs` | `6000` | Positive grace after stdin EOF before platform termination; it cannot exceed [`MAX_TIMER_DELAY_MS`](../../util/timeout/README.md). |
| `disposeGraceMs` | `3000` | Positive POSIX grace after SIGTERM before SIGKILL (Windows force-terminates directly); it cannot exceed [`MAX_TIMER_DELAY_MS`](../../util/timeout/README.md). |
```yaml
- id: subagent-acp
@@ -57,7 +57,7 @@ ACP advertises no start-time capabilities because this process cannot enforce th
## Process boundary
The child spawns through the [`dsh-subprocess`](../../subprocess/subprocess/README.md) seam: credential-shaped ambient variables and ambient `DSH_*` names are removed by the shared scrub, then explicit `config.env` values merge after it (an intended `DEEPSEEK_API_KEY` survives, and a `DSH_*` deployment fact such as `DSH_PERMISSION_MODE` reaches the child the same way — the scrub drops only its stale ambient namesake), stderr is inherited to the parent's own stream, and disposal runs the seam's cooperative stdin-EOF→SIGTERM→SIGKILL ladder with this plugin's configured graces. The ACP wire is the real serialization boundary; same-process subagent values are not defensively cloned.
The child spawns through the [`dsh-subprocess`](../../subprocess/subprocess/README.md) seam: credential-shaped ambient variables and ambient `DSH_*` names are removed by the shared scrub, then explicit `config.env` values merge after it (an intended `DEEPSEEK_API_KEY` survives, and a `DSH_*` deployment fact such as `DSH_PERMISSION_MODE` reaches the child the same way — the scrub drops only its stale ambient namesake), stderr is inherited to the parent's own stream, and disposal applies this plugin's EOF window before the subprocess-owned SIGTERM→SIGKILL escalation and whole-tree join. The ACP wire is the real serialization boundary; same-process subagent values are not defensively cloned.
The package has no default export. Cordis loader unwrapping would otherwise hide the named `inject` metadata; see [postmortem 0001](../../../docs/postmortem/0001-acp-default-export-drops-inject.md).