tzhouamandClaude Fable 5.1
00510ce38b
One package that makes the POSIX assumptions measured in W0-W8 hold in every process vLLM / vLLM-Omni starts, and reports what it did: - provides fcntl (flock/lockf on msvcrt.locking; LOCK_SH served as exclusive) and uvloop (asyncio.run on a selector loop) when absent; - installs WindowsSelectorEventLoopPolicy and a signal.signal fallback for loop.add_signal_handler on the Windows loop classes; - replaces whole vLLM's get_open_zmq_ipc_path / find_loaded_library when the wheel lacks the branch patch and the upstream body hash is known; - verifies the wheel-only sites (sentinel poll, int64 seed) and reports wheel_required at the exact site instead of failing downstream; - shm_dir() replaces the /dev/shm literals; os.geteuid provided. Activated from vllm_omni/patch.py and as vllm.general_plugins / vllm_omni.general_plugins entry points (idempotent; no-op off Windows). prints the audit; the M0 placement report embeds it. 16 Linux tests through injected primitives. Design: analysis/design_windows_compat_plugin_20260921.md Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM-Omni project
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"""Filesystem places POSIX code hard-codes, and the one ``os`` function Windows lacks."""
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from __future__ import annotations
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import os
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import sys
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import tempfile
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from pathlib import Path
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_POSIX_SHM = "/dev/shm"
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def shm_dir() -> str:
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"""The directory for ``/dev/shm``-style lock and ack files.
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``/dev/shm`` where it exists (Linux, WSL). On Windows a per-user directory
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under ``%LOCALAPPDATA%`` (falling back to the temp dir), created on first
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use. Callers that used to write ``f"/dev/shm/..."`` go through this so the
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path is the same on every platform that has one and a real one elsewhere.
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"""
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if os.path.isdir(_POSIX_SHM):
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return _POSIX_SHM
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base = os.environ.get("LOCALAPPDATA") or tempfile.gettempdir()
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path = Path(base) / "vllm_omni" / "shm"
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path.mkdir(parents=True, exist_ok=True)
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return str(path)
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def shm_path(name: str) -> str:
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return os.path.join(shm_dir(), name)
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def provide_geteuid() -> str:
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"""``os.geteuid``/``os.getuid`` do not exist on Windows.
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``host_weight_runtime`` compares ``st_uid`` against ``os.geteuid()`` for a
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"did we create this" check; Windows ``os.stat`` reports ``st_uid == 0``, so
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returning 0 makes the comparison mean the same thing it can mean there.
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"""
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if sys.platform != "win32":
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return "n/a"
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if hasattr(os, "geteuid"):
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return "already" if getattr(os.geteuid, "__vllm_omni_windows__", False) else "real"
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def geteuid() -> int:
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return 0
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geteuid.__vllm_omni_windows__ = True # type: ignore[attr-defined]
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os.geteuid = geteuid # type: ignore[attr-defined]
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if not hasattr(os, "getuid"):
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os.getuid = geteuid # type: ignore[attr-defined]
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return "provided"
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