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#![feature(test)]
extern crate test;
#[cfg(feature = "std")]
use backtrace::Backtrace;
#[bench]
#[cfg(feature = "std")]
fn trace(b: &mut test::Bencher) {
#[inline(never)]
fn the_function() {
backtrace::trace(|frame| {
let ip = frame.ip();
test::black_box(ip);
true
});
}
b.iter(the_function);
}
#[bench]
#[cfg(feature = "std")]
fn trace_and_resolve_callback(b: &mut test::Bencher) {
#[inline(never)]
fn the_function() {
backtrace::trace(|frame| {
backtrace::resolve(frame.ip(), |symbol| {
let addr = symbol.addr();
test::black_box(addr);
});
true
});
}
b.iter(the_function);
}
#[bench]
#[cfg(feature = "std")]
fn trace_and_resolve_separate(b: &mut test::Bencher) {
#[inline(never)]
fn the_function(frames: &mut Vec<*mut std::ffi::c_void>) {
backtrace::trace(|frame| {
frames.push(frame.ip());
true
});
frames.iter().for_each(|frame_ip| {
backtrace::resolve(*frame_ip, |symbol| {
test::black_box(symbol);
});
});
}
let mut frames = Vec::with_capacity(1024);
b.iter(|| {
the_function(&mut frames);
frames.clear();
});
}
#[bench]
#[cfg(feature = "std")]
fn new_unresolved(b: &mut test::Bencher) {
#[inline(never)]
fn the_function() {
let bt = Backtrace::new_unresolved();
test::black_box(bt);
}
b.iter(the_function);
}
#[bench]
#[cfg(feature = "std")]
fn new(b: &mut test::Bencher) {
#[inline(never)]
fn the_function() {
let bt = Backtrace::new();
test::black_box(bt);
}
b.iter(the_function);
}
#[bench]
#[cfg(feature = "std")]
fn new_unresolved_and_resolve_separate(b: &mut test::Bencher) {
#[inline(never)]
fn the_function() {
let mut bt = Backtrace::new_unresolved();
bt.resolve();
test::black_box(bt);
}
b.iter(the_function);
}
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