Struct ra_ap_profile::CpuSpan

pub struct CpuSpan { /* fields omitted */ }

A wrapper around google_cpu_profiler.

Usage:

1. Install gpref_tools (https://github.com/gperftools/gperftools), probably packaged with your Linux distro.
2. Build with cpu_profiler feature.
3. Tun the code, the raw output would be in the ./out.profile file.
4. Install pprof for visualization (https://github.com/google/pprof).
5. Bump sampling frequency to once per ms: export CPUPROFILE_FREQUENCY=1000
6. Use something like pprof -svg target/release/rust-analyzer ./out.profile to see the results.

For example, here's how I run profiling on NixOS:

$ nix-shell -p gperftools --run \
    'cargo run --release -p rust-analyzer -- parse < ~/projects/rustbench/parser.rs > /dev/null'

See this diff for how to profile completions:

https://github.com/rust-analyzer/rust-analyzer/pull/5306

Trait Implementations

impl Debug for CpuSpan

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for CpuSpan

fn drop(&mut self)

Executes the destructor for this type.