Prettify log output

src/arch/x86_64/driver/vga.rs

@@ -4,7 +4,7 @@ use core::fmt;
 use spin::Mutex;
 use volatile::Volatile;
 use x86_64::instructions::port::Port;
-use io::Color;
+use logging::Color;
 
 pub const VGA_BUFFER: Unique<VgaBuffer> = unsafe {
     Unique::new_unchecked((KERNEL_OFFSET + 0xb8000) as *mut _)

src/lib.rs

@@ -58,7 +58,7 @@ pub use arch::other_main;
 use linked_list_allocator::LockedHeap;
 
 #[macro_use]    // print!
-mod io;
+mod logging;
 mod memory;
 mod lang;
 mod util;
@@ -89,7 +89,7 @@ fn timer_interrupt() {
 #[no_mangle]
 #[cfg(target_arch = "riscv")]
 pub extern fn rust_main() -> ! {
-    io::init();
+    logging::init();
     arch::init();
     process::init();
     info!("RISCV init end");
@@ -104,7 +104,7 @@ pub extern "C" fn rust_main(multiboot_information_address: usize) -> ! {
     // ATTENTION: we have a very small stack and no guard page
     println!("Hello World{}", "!");
 
-    io::init();
+    logging::init();
     arch::init(multiboot_information_address);
 
     process::init();

src/logging.rs

@@ -17,7 +17,7 @@ pub fn init() {
 
 macro_rules! print {
     ($($arg:tt)*) => ({
-        $crate::io::print(format_args!($($arg)*));
+        $crate::logging::print(format_args!($($arg)*));
     });
 }
 
@@ -84,7 +84,9 @@ impl Log for SimpleLogger {
             "rust_ucore::process::scheduler::rr",
         ];
         if self.enabled(record.metadata()) && !DISABLED_TARGET.contains(&record.target()) {
-            print_in_color(format_args!("[{}] {}\n", record.target(), record.args()), Color::from(record.level()));
+//            let target = record.target();
+//            let begin = target.as_bytes().iter().rposition(|&c| c == b':').map(|i| i + 1).unwrap_or(0);
+            print_in_color(format_args!("[{:>5}] {}\n", record.level(), record.args()), Color::from(record.level()));
         }
     }
     fn flush(&self) {}