feat: speedup ebpf uprobe attaching

crates/memtrack/Cargo.toml

@@ -34,6 +34,7 @@ paste = "1.0.15"
 libbpf-rs = { version = "0.26", features = ["vendored"], optional = true }
 glob = "0.3.3"
 object = { workspace = true }
+rayon = "1.12"
 
 [build-dependencies]
 libbpf-cargo = { version = "0.26", optional = true }
@@ -46,6 +47,11 @@ rstest = { workspace = true }
 test-log = { workspace = true }
 insta = { workspace = true }
 test-with = { workspace = true }
+divan = { package = "codspeed-divan-compat", version = "4" }
+
+[[bench]]
+name = "attach"
+harness = false
 
 [package.metadata.dist]
 targets = ["aarch64-unknown-linux-gnu", "x86_64-unknown-linux-gnu"]

crates/memtrack/benches/attach.rs

@@ -0,0 +1,36 @@
+use memtrack::{AllocatorLib, resolve_symbol_offsets};
+use rayon::prelude::*;
+
+fn main() {
+    divan::main();
+}
+
+fn discovered_allocators() -> Vec<AllocatorLib> {
+    let libs = AllocatorLib::find_all().expect("failed to discover allocators");
+    assert!(!libs.is_empty(), "no allocators discovered");
+    libs
+}
+
+/// Resolve symbol offsets for every discovered allocator one library at a time.
+#[divan::bench]
+fn resolve_offsets_serial(bencher: divan::Bencher) {
+    let libs = discovered_allocators();
+
+    bencher.bench_local(|| {
+        libs.iter()
+            .map(|lib| resolve_symbol_offsets(&lib.path).expect("failed to resolve offsets"))
+            .collect::<Vec<_>>()
+    });
+}
+
+/// Resolve symbol offsets for every discovered allocator in parallel.
+#[divan::bench]
+fn resolve_offsets_parallel(bencher: divan::Bencher) {
+    let libs = discovered_allocators();
+
+    bencher.bench_local(|| {
+        libs.par_iter()
+            .map(|lib| resolve_symbol_offsets(&lib.path).expect("failed to resolve offsets"))
+            .collect::<Vec<_>>()
+    });
+}