michaelkuc6/blog_os
1
0
Fork 0
mirror of https://github.com/phil-opp/blog_os.git synced 2025-12-16 14:27:49 +00:00
Code Issues Projects Releases Wiki Activity

Avoid deadlock on nested print! invokation

Browse Source
This commit is contained in:
Philipp Oppermann
2017-04-12 19:36:32 +02:00
parent 59b8133396
commit 9f448fbe0e
1 changed files with 6 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/vga_buffer.rs
View File

@@ -126,9 +126,7 @@ impl fmt::Write for Writer {
macro_rules! print {
($($arg:tt)*) => ({
use core::fmt::Write;
let mut writer = $crate::vga_buffer::WRITER.lock();
writer.write_fmt(format_args!($($arg)*)).unwrap();
$crate::vga_buffer::print(format_args!($($arg)*));
});
}
@@ -137,6 +135,11 @@ macro_rules! println {
($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
}
pub fn print(args: fmt::Arguments) {
use core::fmt::Write;
WRITER.lock().write_fmt(args).unwrap();
}
pub fn clear_screen() {
for _ in 0..BUFFER_HEIGHT {
println!("");