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## Background - follow-up to previous macOS-only PR: https://github.com/openai/codex/pull/11711 - follow-up macOS refactor PR (current structural approach used here): https://github.com/openai/codex/pull/12340 ## Summary - extend `codex-utils-sleep-inhibitor` with Linux and Windows backends while preserving existing macOS behavior - Linux backend: - use `systemd-inhibit` (`--what=idle --mode=block`) when available - fall back to `gnome-session-inhibit` (`--inhibit idle`) when available - keep no-op behavior if neither backend exists on host - Windows backend: - use Win32 power request handles (`PowerCreateRequest` + `PowerSetRequest` / `PowerClearRequest`) with `PowerRequestSystemRequired` - make `prevent_idle_sleep` Experimental on macOS/Linux/Windows; keep under development on other targets ## Testing - `just fmt` - `cargo test -p codex-utils-sleep-inhibitor` - `cargo test -p codex-core features::tests::` - `cargo test -p codex-tui chatwidget::tests::` - `just fix -p codex-utils-sleep-inhibitor` - `just fix -p codex-core` ## Semantics and API references - Goal remains: prevent idle system sleep while a turn is running. - Linux: - `systemd-inhibit` / login1 inhibitor model: - https://www.freedesktop.org/software/systemd/man/latest/systemd-inhibit.html - https://www.freedesktop.org/software/systemd/man/org.freedesktop.login1.html - https://systemd.io/INHIBITOR_LOCKS/ - xdg-desktop-portal Inhibit (relevant for sandboxed apps): - https://flatpak.github.io/xdg-desktop-portal/docs/doc-org.freedesktop.portal.Inhibit.html - Windows: - `PowerCreateRequest`: - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-powercreaterequest - `PowerSetRequest`: - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-powersetrequest - `PowerClearRequest`: - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-powerclearrequest - `SetThreadExecutionState` (alternative baseline API): - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-setthreadexecutionstate ## Chromium vs this PR - Chromium Linux backend: - https://github.com/chromium/chromium/blob/main/services/device/wake_lock/power_save_blocker/power_save_blocker_linux.cc - Chromium Windows backend: - https://github.com/chromium/chromium/blob/main/services/device/wake_lock/power_save_blocker/power_save_blocker_win.cc - Electron powerSaveBlocker entry point: - https://github.com/electron/electron/blob/main/shell/browser/api/electron_api_power_save_blocker.cc ## Why we differ from Chromium - Linux implementation mechanism: - Chromium uses in-process D-Bus APIs plus UI-integrated screen-saver suspension. - This PR uses command-based inhibitor backends (`systemd-inhibit`, `gnome-session-inhibit`) instead of linking a Linux D-Bus client in this crate. - Reason: keep `codex-utils-sleep-inhibitor` dependency-light and avoid Linux CI/toolchain fragility from new native D-Bus linkage, while preserving the same runtime intent (hold an inhibitor while a turn runs). - Linux UI integration scope: - Chromium also uses `display::Screen::SuspendScreenSaver()` in its UI stack. - Codex `codex-rs` does not have that display abstraction in this crate, so this PR scopes Linux behavior to process-level sleep inhibition only. - Windows wake-lock type breadth: - Chromium supports both display/system wake-lock types and extra display-specific handling for some pre-Win11 scenarios. - Codex’s feature is scoped to turn execution continuity (not forcing display on), so this PR uses `PowerRequestSystemRequired` only. |
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