Files
ghostty-rs/Cargo.toml
T
ddidderr 0c4f0ee412 perf: add ghostty-bench and bring terminal throughput to Zig parity
Adds crates/ghostty-bench, a port of ZIG/src/benchmark and src/synthetic:
the ghostty-bench binary (terminal-stream, terminal-parser,
codepoint-width, grapheme-break, is-symbol, osc-parser, screen-clone
with Zig's CLI) and ghostty-synthetic data generators (+ascii, +utf8,
+osc, plus a Rust-only +sgr mode).

Measured against Ghostty's own ghostty-bench built with Zig 0.15.2
(ReleaseFast) vs --profile production, the hot paths were optimized
without behaviour changes:
- Terminal::print single-lookup fast path for width-1 chars mid-line
- page grapheme allocator: bitmap first-fit instead of a linear scan
  (was 38% of utf8 stream time; randomized equivalence test added)
- plain cells skip per-cell work in clear_cells and row cloning
- ASCII fast path + strict hand-written UTF-8 decoder (exhaustive
  equivalence test against std)
- parser/OSC parser split into inlined fast and state-change paths
- RenderState allocates grapheme vectors only for grapheme rows
- Page::assert_integrity no-op stub so the production profile builds

terminal-stream is now at parity (ascii 1.08x, utf8 0.97x, SGR 1.04x of
Zig's time). Still slower: screen-clone (~2.6x, zero-filling fresh
cell Vecs vs Zig's lazily-zeroed mmap), osc-parser (1.9x), and the raw
parser on SGR data (1.5x). Full table in docs/rewrite/notes/perf-P1.md.

Test Plan:
- cargo test --workspace (no failures)
- cargo run --profile production -p ghostty-bench -- +terminal-stream
  --data=<file> and compare with Zig's ghostty-bench
2026-10-12 02:08:01 +02:00

98 lines
2.5 KiB
TOML

[package]
name = "ghostty-rs"
version = "0.1.0"
edition = "2024"
description = "A Rust rewrite of the Ghostty terminal emulator"
[[bin]]
name = "ghostty"
path = "src/main.rs"
[dependencies]
ghostty-core.workspace = true
ghostty-config.workspace = true
ghostty-apprt-gtk.workspace = true
ghostty-apprt.workspace = true
ghostty-cli.workspace = true
log = "0.4"
[lints]
workspace = true
[workspace]
resolver = "3"
members = [".", "crates/*"]
[workspace.package]
version = "0.1.0"
edition = "2024"
license = "MIT"
[workspace.dependencies]
ghostty-vt = { path = "crates/ghostty-vt" }
ghostty-unicode = { path = "crates/ghostty-unicode" }
ghostty-terminal = { path = "crates/ghostty-terminal" }
ghostty-input = { path = "crates/ghostty-input" }
ghostty-config = { path = "crates/ghostty-config" }
ghostty-font = { path = "crates/ghostty-font" }
ghostty-renderer = { path = "crates/ghostty-renderer" }
ghostty-termio = { path = "crates/ghostty-termio" }
ghostty-os = { path = "crates/ghostty-os" }
ghostty-datastruct = { path = "crates/ghostty-datastruct" }
ghostty-core = { path = "crates/ghostty-core" }
ghostty-apprt-gtk = { path = "crates/ghostty-apprt-gtk" }
ghostty-apprt = { path = "crates/ghostty-apprt" }
ghostty-cli = { path = "crates/ghostty-cli" }
ghostty-bench = { path = "crates/ghostty-bench" }
[workspace.lints.rust]
unsafe_code = "forbid"
[workspace.lints.clippy]
pedantic = { level = "warn", priority = -1 }
todo = "warn"
unwrap_used = "warn"
# Porting a low-level terminal emulator involves a lot of intentional
# numeric casts and long state-machine functions; these pedantic lints are
# noise for this codebase.
cast_possible_truncation = "allow"
cast_possible_wrap = "allow"
cast_sign_loss = "allow"
cast_precision_loss = "allow"
cast_lossless = "allow"
module_name_repetitions = "allow"
too_many_lines = "allow"
missing_errors_doc = "allow"
missing_panics_doc = "allow"
similar_names = "allow"
struct_excessive_bools = "allow"
fn_params_excessive_bools = "allow"
match_same_arms = "allow"
unreadable_literal = "allow"
many_single_char_names = "allow"
doc_markdown = "allow"
must_use_candidate = "allow"
return_self_not_must_use = "allow"
used_underscore_binding = "allow"
large_stack_arrays = "allow"
inline_always = "allow"
[profile.release]
debug = true
strip = false
debug-assertions = true
overflow-checks = true
lto = false
panic = "unwind"
incremental = true
[profile.production]
inherits = "release"
debug = false
strip = true
debug-assertions = false
overflow-checks = false
lto = true
incremental = false
codegen-units = 1