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b1c3615431
Add the script from https://github.com/chatmail/core/pull/8345/changes#r3696015000 with a few small tweaks TODO: Add to readme
40 lines
1.2 KiB
Bash
Executable File
40 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Report the largest async-fn futures using rustc's unstable -Zprint-type-sizes.
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#
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# Usage: scripts/future-sizes.sh [TOP_N] (default: 30)
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#
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# Uses a dedicated target dir so the normal build cache is untouched
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# and repeated runs only recompile the core crate itself.
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TOP_N="${1:-30}"
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export CARGO_TARGET_DIR="target/type-sizes"
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export RUSTFLAGS="-Zprint-type-sizes"
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export RUSTC_BOOTSTRAP=1
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# Warm the dependency cache so their output doesn't pollute the report later.
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cargo check --locked --release -p deltachat >/dev/null
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# Recompile only the core crate (release) capture its type-size report.
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cargo clean --locked --release -p deltachat
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report="$CARGO_TARGET_DIR/type-sizes.txt"
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if ! cargo check --locked --release -p deltachat >"$report"; then
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tail -20 "$report"
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exit 1
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fi
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sizes=$(rg '^print-type-size type: `\{async fn body of (.*)\(\)\}`: ([0-9]+) bytes' \
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-or '$2 $1' "$report" | sort -rn | uniq)
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if [ -z "$sizes" ]; then
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echo "error: no type-size output found, see $report" >&2
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exit 1
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fi
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echo "Largest async fn futures in deltachat (top $TOP_N, bytes):"
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head -"$TOP_N" <<<"$sizes"
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echo
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echo "Full report (all types, with per-field breakdown): $report"
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