libfringe/benches/kernel_swap.rs

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// This file is part of libfringe, a low-level green threading library.
// Copyright (c) edef <edef@edef.eu>
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// See the LICENSE file included in this distribution.
#![cfg(target_os = "linux")]
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#![feature(asm, test)]
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extern crate test;
use test::Bencher;
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#[cfg(target_arch = "x86_64")]
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#[bench]
fn kernel_swap(b: &mut Bencher) {
b.iter(|| unsafe {
asm!("movq $$102, %rax\n\
syscall"
:
:
: "rax", "rcx"
: "volatile");
});
}
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#[cfg(target_arch = "x86")]
#[bench]
fn kernel_swap(b: &mut Bencher) {
b.iter(|| unsafe {
asm!("mov $$24, %eax\n\
int $$0x80"
:
:
: "eax"
: "volatile");
});
}