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l0ng-ai
22e1ab1694
tty7 is split into two Rust processes: a persistent daemon that owns the shells and a GPU-rendered client that talks to it over a local socket. Because the shells live in the daemon, quitting and reopening the app leaves the session intact — detach and reattach, no tmux required. - Persistent sessions — the daemon holds the PTYs and child processes, so closing a window or swapping in a new build never takes a shell down. - Performance — an 11 MB `cat` completes in 95 ms and DOOM-fire renders at 888 fps; the daemon drains the PTY at device speed off the render path. - Shell-aware — new tabs and splits open in the current working directory; zsh, bash, fish, and PowerShell are set up automatically. - Enhanced prompt — inline completion, syntax highlighting, history, and in-terminal search, with rich flag/subcommand signatures for common tools. - Tabs, resizable splits, a command palette, click-to-open links, desktop notifications, eight themes, and CJK/IME input. Native builds for macOS, Windows, and Linux. Built on Zed's gpui and Alacritty's VT core.
28 lines
1.3 KiB
Rust
28 lines
1.3 KiB
Rust
//! Thread-scheduling helpers shared by the daemon and the GUI client.
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/// Ask the OS to schedule the calling thread at user-interactive QoS.
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///
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/// macOS assigns unclassified threads a default QoS the scheduler is free to
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/// park on efficiency cores under load. Measured on an M1 Pro mid-benchmark:
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/// whole seconds where the PTY drain drops from ~96 MB/s to 50–70 MB/s — an
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/// E-core's pace — then recovers. The threads on the interactive output path
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/// (daemon PTY reader, connection writer/reader, client socket reader) carry
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/// keystroke echo and the visible output stream, which is exactly the workload
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/// `QOS_CLASS_USER_INTERACTIVE` names. Best effort; a refused hint just keeps
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/// the default class. No-op elsewhere: Linux/Windows schedulers don't demote
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/// by QoS class.
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pub fn promote_to_user_interactive() {
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// Escape hatch for benchmarking the promotion itself (and for users whose
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// workload fares better under default scheduling): any non-empty value
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// other than "0" disables it.
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if std::env::var("TTY7_NO_QOS").is_ok_and(|v| !v.is_empty() && v != "0") {
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return;
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}
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#[cfg(target_os = "macos")]
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// SAFETY: a plain scheduling hint for the current thread; no pointers, no
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// preconditions.
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unsafe {
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libc::pthread_set_qos_class_self_np(libc::qos_class_t::QOS_CLASS_USER_INTERACTIVE, 0);
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}
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}
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