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unsloth/studio/backend/utils
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Unsloth 6492d36719 Address review round 4: refcount concurrent guards, distrust proxy TCP 
- Overlapping requests lost offline mid-flight. A later guard saw the
  HF_HUB_OFFLINE that an earlier one had set and took the no-op branch, so
  when the earlier guard exited it restored the constants and sessions while
  the later request was still resolving hub files, dropping it back onto the
  retry path. Each guard now holds its own reference on the refcounted
  force_hf_offline window. A user-supplied offline variable is still left
  untouched, told apart via force_hf_offline_active().
- The socket-timeout fallback trusted a TCP handshake to the proxy, which
  only proves the proxy is up, not that it can reach the hub. A live proxy
  with a blackholed upstream therefore read as reachable. With a proxy
  configured the timeout now stays unreachable; the TCP check is only
  evidence when connecting to the endpoint directly.

Verified: second guard engages and offline survives the first guard's exit,
state fully restored after both; dead-upstream proxy reads unreachable while
a slow direct endpoint still reads reachable; 9 concurrent metadata requests
against an unreachable hub all return 200 in 5.1s total.
2026-07-29 01:49:45 -07:00
..
datasets Studio: add configurable model download location (#7274) 2026-07-23 01:34:38 -07:00
hardware Vulkan GPUs: real device names and selectable ordinals (rebase of #7356 onto #7476) (#7498) 2026-07-27 05:21:48 -07:00
inference Unsloth run/start: per-model recommended sampling and override flags (#7335) 2026-07-23 20:49:54 -07:00
models Pin utf-8 on shipping-code text I/O instead of the operator locale (#7486) 2026-07-27 02:14:20 -07:00
paths Let a decode failure degrade instead of escaping a fail-closed helper (#7487) 2026-07-27 03:26:08 -07:00
prebuilt Studio: add local speech-to-text dictation engine (#7095) 2026-07-23 01:39:03 -07:00
security Pin utf-8 on shipping-code text I/O instead of the operator locale (#7486) 2026-07-27 02:14:20 -07:00
.gitkeep root studio folder 2026-02-02 09:13:49 +00:00
__init__.py Final cleanup 2026-03-12 18:28:04 +00:00
_studio_release_build.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
api_errors.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
cache_cleanup.py Reduce and tighten code comments and docstrings repo-wide (#6095) 2026-06-08 23:09:51 -07:00
client_ip.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
coding_agents.py feat: detect installed coding agent CLIs in Studio settings (#6909) 2026-07-08 05:26:50 -07:00
cpu_threads.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
downsample.py Formatting: ruff line-length 100, kwarg-spacing passes, drop blank after short local imports (#6079) 2026-06-08 04:24:13 -07:00
embedding_model_settings.py Studio: customizable RAG embedding model with HF search, settings tab reorganization (#6800) 2026-07-02 05:26:33 -07:00
helper_precache_settings.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
hf_cache_settings.py Studio: add configurable model download location (#7274) 2026-07-23 01:34:38 -07:00
hf_token_validation.py Studio: validate Hugging Face tokens before use (#7261) 2026-07-20 14:40:14 +01:00
hf_xet_fallback.py Studio: add configurable model download location (#7274) 2026-07-23 01:34:38 -07:00
hidden_models.py Studio: add local speech-to-text dictation engine (#7095) 2026-07-23 01:39:03 -07:00
host_policy.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
lifespan_shutdown.py Studio: make lifespan shutdown resilient to a dead default executor (#6307) 2026-06-15 22:51:46 -07:00
llama_cpp_freshness.py Studio: add local speech-to-text dictation engine (#7095) 2026-07-23 01:39:03 -07:00
llama_cpp_update.py Installer: opt-in Vulkan llama.cpp backend (and fallback when no AMD card is HIP-supported) (#7373) 2026-07-27 06:57:19 -07:00
mlx_repair.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
native_path_leases.py Studio: add configurable model download location (#7274) 2026-07-23 01:34:38 -07:00
node_runtime.py Studio: use an isolated Node.js for the frontend build instead of replacing the system Node/npm (#6533) 2026-06-21 21:17:29 -07:00
openai_auto_switch_settings.py Studio: tighten the comments added by the OpenAI model-admission work (#7501) 2026-07-27 05:59:03 -07:00
personalization_settings.py studio: persist personalization (profile, avatar, theme) server-side (#6516) 2026-06-22 04:09:48 -07:00
preview_rate_limit.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
preview_sharing_settings.py Studio: require signed capability tokens for /p preview links (#6666) 2026-06-25 21:40:48 -07:00
preview_token.py Studio: require signed capability tokens for /p preview links (#6666) 2026-06-25 21:40:48 -07:00
process_lifetime.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
ssm_runtime.py Auto-install SSM kernels (causal-conv1d, mamba-ssm) for inference loads (#6535) 2026-06-22 04:48:29 -07:00
studio_version.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
subprocess_compat.py Reduce and tighten code comments and docstrings repo-wide (#6095) 2026-06-08 23:09:51 -07:00
training_runs.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
transformers_dtype.py Studio: Fix torch_dtype deprecation warning on startup and ASR load (#6999) 2026-07-13 17:34:25 -03:00
transformers_latest.py Replace standalone Studio wording with Unsloth (#7221) 2026-07-19 00:47:04 -07:00
transformers_version.py Address review round 4: refcount concurrent guards, distrust proxy TCP 2026-07-29 01:49:45 -07:00
update_status.py Studio: make code comments and docstrings more succinct (#6029) 2026-06-08 23:07:28 -07:00
upload_limits.py Studio: add local speech-to-text dictation engine (#7095) 2026-07-23 01:39:03 -07:00
utils.py Address review round 4: refcount concurrent guards, distrust proxy TCP 2026-07-29 01:49:45 -07:00
uv_path_safety.py Make _uv_safe_path space-safe on macOS/Linux (#6503) (#6534) 2026-06-24 04:02:24 -07:00
wheel_utils.py Studio: fix flash-attn and torchao install on Blackwell (sm_100+) GPUs (Closes #6961) (#6970) 2026-07-08 06:38:10 -07:00
whisper_cpp_freshness.py Studio: add local speech-to-text dictation engine (#7095) 2026-07-23 01:39:03 -07:00
whisper_cpp_update.py Studio: add local speech-to-text dictation engine (#7095) 2026-07-23 01:39:03 -07:00