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Optimizations plus bug fix (#541)
* Optimize `Download::and_extract`: Avoid dup monomorphization * Increase buffer size for binstall_crates_v1 to `4096 * 5` * Optimize `opts::resolve`: Avoid unnecessary `clone`s * Fix reserve in `opts::resolve`: Do not over-reserve * Rename field `opts::Options::resolver` => `resolvers` * Refactor: Extract new type `resolve::PackageInfo` - which makes `opts::resolve_inner` easier to understand - reduce number of parameters required for `download_extract_and_verify` and `collect_bin_files` - reducing size of future returned by `opts::resolve_inner` by dropping `cargo_toml::{Manifest, Package}` as early as possible since `Manifest` is 3000 Bytes large while `Package` is 600 Bytes large. * Optimize `fetchers::Data`: Use `CompactString` for field name & version since they are usually small enough to fit in inlined version of `CompactString`. * Optimize `gh_crate_meta`: Avoid unnecessary allocation in `RepositoryHost::get_default_pkg_url_template`. * Refacator: Use `Itertools::cartesian_product` in `apply_filenames_to_paths` * Optimize `ops::resolve`: Avoid unnecessary `clone` & reduce future size by calling `fetcher.target_meta()` to obtain final metadata after downloaded and extracted the binaries. * Optimize `ops::resolve`: Avoid unnecessary allocation in `download_extract_and_verify`: Replace `Itertools::join` with `Itertools::format` to avoid allocating the string. * Fix disabling cargo-install fallback * Simplify `BinFile::from_product`: Takes `&str` instead of `&Product` since we only need `product.name` * Rename `BinFile::from_product` => `BinFile::new` * Refactor: Create newtype `ops::resolve::Bin` so that we don't need to `unwrap()` on `Product::name` and reduce memory usage. Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>
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9 changed files with 220 additions and 160 deletions
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@ -25,6 +25,9 @@ use thiserror::Error;
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use crate::{crate_info::CrateInfo, helpers::create_if_not_exist};
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/// Buffer size for loading and writing binstall_crates_v1 manifest.
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const BUFFER_SIZE: usize = 4096 * 5;
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#[derive(Debug, Diagnostic, Error)]
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#[non_exhaustive]
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pub enum Error {
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@ -56,7 +59,7 @@ where
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}
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pub fn write_to(file: &mut FileLock, iter: &mut dyn Iterator<Item = Data>) -> Result<(), Error> {
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let writer = io::BufWriter::with_capacity(512, file);
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let writer = io::BufWriter::with_capacity(BUFFER_SIZE, file);
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let mut ser = serde_json::Serializer::new(writer);
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@ -149,7 +152,7 @@ pub struct Records {
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impl Records {
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fn load_impl(&mut self) -> Result<(), Error> {
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let reader = io::BufReader::with_capacity(1024, &mut self.file);
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let reader = io::BufReader::with_capacity(BUFFER_SIZE, &mut self.file);
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let stream_deser = serde_json::Deserializer::from_reader(reader).into_iter();
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for res in stream_deser {
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