fix unwrap panic. now user shell is working.

crate/process/src/thread.rs

@@ -95,7 +95,7 @@ pub fn spawn<F, T>(f: F) -> JoinHandle<T>
     // 在Processor中创建新的线程
     let context = new_kernel_context(kernel_thread_entry::<F, T>, f as usize);
     let pid = processor().manager().add(context);
-    processor().manager().set_parent(current().id(), pid);
+    processor().manager().set_parent(0, pid);
 
     // 接下来看看`JoinHandle::join()`的实现
     // 了解是如何获取f返回值的

kernel/src/arch/riscv32/mod.rs

@@ -25,9 +25,7 @@ pub extern fn rust_main(hartid: usize, dtb: usize, hart_mask: usize) -> ! {
     interrupt::init();
     memory::init();
     timer::init();
-
     ::process::init();
-    ::thread::spawn(::shell::run_user_shell);
 
     unsafe { cpu::start_others(hart_mask); }
     ::kmain();

kernel/src/arch/x86_64/mod.rs

@@ -48,7 +48,6 @@ pub extern "C" fn _start(boot_info: &'static BootInfo) -> ! {
     driver::init();
 
     ::process::init();
-    ::thread::spawn(::shell::run_user_shell);
 
     AP_CAN_INIT.store(true, Ordering::Relaxed);
 

kernel/src/process/mod.rs

@@ -13,18 +13,20 @@ pub fn init() {
     let scheduler = Box::new(scheduler::RRScheduler::new(5));
     let manager = Arc::new(ProcessManager::new(scheduler, MAX_PROCESS_NUM));
 
+    unsafe {
+        for cpu_id in 0..MAX_CPU_NUM {
+            PROCESSORS[cpu_id].init(cpu_id, ContextImpl::new_init(), manager.clone());
+        }
+    }
+
     extern fn idle(_arg: usize) -> ! {
         loop { cpu::halt(); }
     }
     for i in 0..4 {
         manager.add(ContextImpl::new_kernel(idle, i));
     }
+    ::shell::run_user_shell();
 
-    unsafe {
-        for cpu_id in 0..MAX_CPU_NUM {
-            PROCESSORS[cpu_id].init(cpu_id, ContextImpl::new_init(), manager.clone());
-        }
-    }
     info!("process init end");
 }