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Create a static WRITER protected by a spinlock

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Philipp Oppermann
2017-04-12 19:32:59 +02:00
parent f24c7bc322
commit 40aed4fa0f
3 changed files with 14 additions and 15 deletions
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21
src/vga_buffer.rs
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@@ -1,7 +1,14 @@
use core::fmt;
use core::ptr::Unique;
use spin::Mutex;
use volatile::Volatile;
pub static WRITER: Mutex<Writer> = Mutex::new(Writer {
column_position: 0,
color_code: ColorCode::new(Color::LightGreen, Color::Black),
buffer: unsafe { Unique::new_unchecked(0xb8000 as *mut _) },
});
#[allow(dead_code)]
#[derive(Debug, Clone, Copy)]
#[repr(u8)]
@@ -116,17 +123,3 @@ impl fmt::Write for Writer {
Ok(())
}
}
pub fn print_something() {
use core::fmt::Write;
let mut writer = Writer {
column_position: 0,
color_code: ColorCode::new(Color::LightGreen, Color::Black),
buffer: unsafe { Unique::new(0xb8000 as *mut _) },
};
writeln!(writer, "Hello!");
writeln!(writer, "The numbers are {} and {}", 42, 1.0/3.0);
}