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|
//! Benchmark operations like highlighting or goto definition.
use std::{env, path::Path, str::FromStr, sync::Arc, time::Instant};
use anyhow::{format_err, Result};
use ra_db::{
salsa::{Database, Durability},
FileId,
};
use ra_ide::{Analysis, AnalysisChange, AnalysisHost, CompletionConfig, FilePosition, LineCol};
use vfs::AbsPathBuf;
use crate::{
cli::{load_cargo::load_cargo, Verbosity},
print_memory_usage,
};
pub enum BenchWhat {
Highlight { path: AbsPathBuf },
Complete(Position),
GotoDef(Position),
}
pub struct Position {
pub path: AbsPathBuf,
pub line: u32,
pub column: u32,
}
impl FromStr for Position {
type Err = anyhow::Error;
fn from_str(s: &str) -> Result<Self> {
let (path_line, column) = rsplit_at_char(s, ':')?;
let (path, line) = rsplit_at_char(path_line, ':')?;
let path = env::current_dir().unwrap().join(path);
let path = AbsPathBuf::assert(path);
Ok(Position { path, line: line.parse()?, column: column.parse()? })
}
}
fn rsplit_at_char(s: &str, c: char) -> Result<(&str, &str)> {
let idx = s.rfind(c).ok_or_else(|| format_err!("no `{}` in {}", c, s))?;
Ok((&s[..idx], &s[idx + 1..]))
}
pub fn analysis_bench(
verbosity: Verbosity,
path: &Path,
what: BenchWhat,
memory_usage: bool,
load_output_dirs: bool,
with_proc_macro: bool,
) -> Result<()> {
ra_prof::init();
let start = Instant::now();
eprint!("loading: ");
let (mut host, vfs) = load_cargo(path, load_output_dirs, with_proc_macro)?;
eprintln!("{:?}\n", start.elapsed());
let file_id = {
let path = match &what {
BenchWhat::Highlight { path } => path,
BenchWhat::Complete(pos) | BenchWhat::GotoDef(pos) => &pos.path,
};
let path = path.clone().into();
vfs.file_id(&path).ok_or_else(|| format_err!("Can't find {}", path))?
};
match &what {
BenchWhat::Highlight { .. } => {
let res = do_work(&mut host, file_id, |analysis| {
analysis.diagnostics(file_id).unwrap();
analysis.highlight_as_html(file_id, false).unwrap()
});
if verbosity.is_verbose() {
println!("\n{}", res);
}
}
BenchWhat::Complete(pos) | BenchWhat::GotoDef(pos) => {
let is_completion = matches!(what, BenchWhat::Complete(..));
let offset = host
.analysis()
.file_line_index(file_id)?
.offset(LineCol { line: pos.line - 1, col_utf16: pos.column });
let file_position = FilePosition { file_id, offset };
if is_completion {
let options = CompletionConfig::default();
let res = do_work(&mut host, file_id, |analysis| {
analysis.completions(&options, file_position)
});
if verbosity.is_verbose() {
println!("\n{:#?}", res);
}
} else {
let res =
do_work(&mut host, file_id, |analysis| analysis.goto_definition(file_position));
if verbosity.is_verbose() {
println!("\n{:#?}", res);
}
}
}
}
if memory_usage {
print_memory_usage(host, vfs);
}
Ok(())
}
fn do_work<F: Fn(&Analysis) -> T, T>(host: &mut AnalysisHost, file_id: FileId, work: F) -> T {
{
let start = Instant::now();
eprint!("from scratch: ");
work(&host.analysis());
eprintln!("{:?}", start.elapsed());
}
{
let start = Instant::now();
eprint!("no change: ");
work(&host.analysis());
eprintln!("{:?}", start.elapsed());
}
{
let start = Instant::now();
eprint!("trivial change: ");
host.raw_database_mut().salsa_runtime_mut().synthetic_write(Durability::LOW);
work(&host.analysis());
eprintln!("{:?}", start.elapsed());
}
{
let start = Instant::now();
eprint!("comment change: ");
{
let mut text = host.analysis().file_text(file_id).unwrap().to_string();
text.push_str("\n/* Hello world */\n");
let mut change = AnalysisChange::new();
change.change_file(file_id, Some(Arc::new(text)));
host.apply_change(change);
}
work(&host.analysis());
eprintln!("{:?}", start.elapsed());
}
{
let start = Instant::now();
eprint!("item change: ");
{
let mut text = host.analysis().file_text(file_id).unwrap().to_string();
text.push_str("\npub fn _dummy() {}\n");
let mut change = AnalysisChange::new();
change.change_file(file_id, Some(Arc::new(text)));
host.apply_change(change);
}
work(&host.analysis());
eprintln!("{:?}", start.elapsed());
}
{
let start = Instant::now();
eprint!("const change: ");
host.raw_database_mut().salsa_runtime_mut().synthetic_write(Durability::HIGH);
let res = work(&host.analysis());
eprintln!("{:?}", start.elapsed());
res
}
}
|
