andrey/rCore-Tutorial-v3
1
0
Fork 0
mirror of https://github.com/rcore-os/rCore-Tutorial-v3.git synced 2024-11-25 19:03:35 +04:00
Code Issues Projects Releases Wiki Activity

cargo fmt

Browse Source
This commit is contained in:
Yifan Wu 2023-03-30 22:56:11 +08:00
parent 243b07f749
commit 7183091ac9
2 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
user/src/bin/sbrk_test.rs
View File

@ -4,8 +4,8 @@
#[macro_use]
extern crate user_lib;
use user_lib::sbrk;
use core::ptr::slice_from_raw_parts_mut;
use user_lib::sbrk;
#[no_mangle]
fn main() -> i32 {
@ -15,12 +15,14 @@ fn main() -> i32 {
println!("origin break point = {:x}", origin_brk);
let brk = sbrk(PAGE_SIZE as i32);
if brk != origin_brk {
return -1
return -1;
}
let brk = sbrk(0);
println!("one page allocated, break point = {:x}", brk);
println!("try write to allocated page");
let new_page = unsafe { &mut *slice_from_raw_parts_mut(origin_brk as usize as *const u8 as *mut u8, PAGE_SIZE) };
let new_page = unsafe {
&mut *slice_from_raw_parts_mut(origin_brk as usize as *const u8 as *mut u8, PAGE_SIZE)
};
for pos in 0..PAGE_SIZE {
new_page[pos] = 1;
}
@ -35,7 +37,7 @@ fn main() -> i32 {
let ret = sbrk(PAGE_SIZE as i32 * -1);
if ret != -1 {
println!("Test sbrk failed!");
return -1
return -1;
}
println!("Test sbrk almost OK!");
println!("now write to deallocated page, should cause page fault.");