36 lines
No EOL
777 B
Rust
36 lines
No EOL
777 B
Rust
#![no_std]
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#![no_main]
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#[macro_use]
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extern crate user_lib;
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use user_lib::{
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OpenFlags,
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open,
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close,
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write,
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get_time,
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};
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#[no_mangle]
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pub fn main() -> i32 {
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let mut buffer = [0u8; 1024]; // 1KiB
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for i in 0..buffer.len() {
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buffer[i] = i as u8;
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}
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let f = open("testf", OpenFlags::CREATE | OpenFlags::WRONLY);
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if f < 0 {
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panic!("Open test file failed!");
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}
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let f = f as usize;
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let start = get_time();
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let size_mb = 1usize;
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for _ in 0..1024*size_mb {
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write(f, &buffer);
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}
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close(f);
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let time_ms = (get_time() - start) as usize;
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let speed_kbs = size_mb * 1000000 / time_ms;
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println!("{}MiB written, time cost = {}ms, write speed = {}KiB/s", size_mb, time_ms, speed_kbs);
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0
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} |