Format

src/interrupts.rs

@@ -9,7 +9,12 @@ use crate::{
 use alloc::{boxed::Box, vec::Vec};
 use az::WrappingCast;
 use cast::{u64, usize};
-use core::{arch::{asm, naked_asm}, ffi::CStr, fmt::Write, ptr, slice};
+use core::{
+    arch::{asm, naked_asm},
+    ffi::CStr,
+    fmt::Write,
+    ptr, slice,
+};
 use hashbrown::HashMap;
 use pic8259::ChainedPics;
 use saturating_cast::SaturatingCast;
@@ -181,18 +186,14 @@ pub fn send_ipc_to(pid: usize, buffer: Box<[u8], &'static ASpaceMutex>, len: usi
                     .lock()
                     .move_mappings_free(buf_start_page, buf_num_pages, aspace)
                     .unwrap();
-                    ptr::slice_from_raw_parts_mut::<u8>(
-                        page.start_address().as_mut_ptr(),
-                        buffer.len(),
-                    )
+                ptr::slice_from_raw_parts_mut::<u8>(page.start_address().as_mut_ptr(), buffer.len())
             })
             .unwrap();
         #[expect(
             clippy::unwrap_used,
             reason = "The PID is known valid due to using it in message_queue_mut in the if-let condition"
         )]
-            let new_buffer_key =
-                TASKING.proc_data_buffers_mut(pid, |x| x.insert(dest_buffer)).unwrap();
+        let new_buffer_key = TASKING.proc_data_buffers_mut(pid, |x| x.insert(dest_buffer)).unwrap();
         #[expect(
             clippy::unwrap_used,
             reason = "The option was already checked at the start of the if-let"
@@ -206,10 +207,8 @@ pub fn send_ipc_to(pid: usize, buffer: Box<[u8], &'static ASpaceMutex>, len: usi
     } else {
         println!("irq 1 msg: Bad PID ({})", pid);
     }
-
 }
 
-
 #[expect(clippy::needless_pass_by_value, reason = "Signature dictated by external crate")]
 fn irq_handler(_stack_frame: InterruptStackFrame, index: u8, _error_code: Option<u64>) {
     #[expect(
@@ -310,7 +309,8 @@ fn get_buffer(id: u64) -> Option<Box<[u8], &'static ASpaceMutex>> {
     })
 }
 
-pub static REGISTERD_PIDS: Lazy<RwLock<HashMap<u64, u64>>> = Lazy::new(|| RwLock::new(HashMap::new()));
+pub static REGISTERD_PIDS: Lazy<RwLock<HashMap<u64, u64>>> =
+    Lazy::new(|| RwLock::new(HashMap::new()));
 
 static INITRD_BUF: Lazy<&'static [u8]> = Lazy::new(|| {
     #[warn(clippy::expect_used, reason = "FIXME")]

src/tasking.rs

@@ -1,9 +1,13 @@
 use crate::{
-    gdt, interrupts::{send_ipc_to, REGISTERD_PIDS}, println, qemu_exit, virtual_memory::{ASpaceMutex, AddressSpace, PagingError, ACTIVE_SPACE, KERNEL_SPACE}
+    gdt,
+    interrupts::{send_ipc_to, REGISTERD_PIDS},
+    println, qemu_exit,
+    virtual_memory::{ASpaceMutex, AddressSpace, PagingError, ACTIVE_SPACE, KERNEL_SPACE},
 };
 use alloc::{
     borrow::ToOwned, boxed::Box, collections::VecDeque, ffi::CString, string::ToString, vec::Vec,
 };
+use cast::{u64, usize};
 use core::{
     alloc::Layout,
     arch::naked_asm,
@@ -19,7 +23,6 @@ use x86_64::{
     structures::paging::{Page, PageTableFlags},
     VirtAddr,
 };
-use cast::{u64, usize};
 
 #[naked]
 extern "C" fn switch_to_asm(current_stack: *mut *mut usize, next_stack: *mut usize) {
@@ -218,11 +221,19 @@ impl Tasking {
             buffer[19..21].copy_from_slice(&8u16.to_le_bytes());
             buffer[21..23].copy_from_slice(&6u16.to_le_bytes());
             len = 23;
-            len += unsigned_varint::encode::u64(u64(pid), (&mut buffer[len..len+10]).try_into().unwrap()).len();
+            len += unsigned_varint::encode::u64(
+                u64(pid),
+                (&mut buffer[len..len + 10]).try_into().unwrap(),
+            )
+            .len();
             if let Some(current_pid) = *(self.current_pid.read()) {
                 buffer[len] = 1;
                 len += 1;
-                len += unsigned_varint::encode::u64(u64(current_pid), (&mut buffer[len..len+10]).try_into().unwrap()).len();
+                len += unsigned_varint::encode::u64(
+                    u64(current_pid),
+                    (&mut buffer[len..len + 10]).try_into().unwrap(),
+                )
+                .len();
             } else {
                 buffer[len] = 0;
                 len += 1;
@@ -352,12 +363,14 @@ impl Tasking {
         }
     }
 
-
     pub fn clear_exited_pid(&self, pid: usize) -> Result<(), ()> {
+        if self.current_pid() == Some(pid) {
+            return Err(());
+        }
         let mut processes = self.processes.write();
         let process = processes.get(pid).ok_or(())?;
-        if *process.sleeping.read() != Some(SleepReason::Exited) {
-            return Err(());
+        if process.sleeping.read().is_none() {
+            self.ready_to_run.lock().retain(|e| *e != pid);
         }
         self.freeable_kstacks.lock().push(processes.remove(pid).kernel_stack);
         Ok(())