1 use alloc::{string::String, sync::Arc, vec::Vec}; 2 3 use crate::{ 4 process::{fork::KernelCloneArgs, KernelStack, ProcessControlBlock, ProcessManager}, 5 syscall::SystemError, 6 }; 7 8 use super::interrupt::TrapFrame; 9 10 pub mod kthread; 11 pub mod syscall; 12 13 pub unsafe fn arch_switch_to_user(path: String, argv: Vec<String>, envp: Vec<String>) -> ! { 14 unimplemented!("RiscV64 arch_switch_to_user") 15 } 16 17 impl ProcessManager { 18 pub fn arch_init() { 19 unimplemented!("ProcessManager::arch_init") 20 } 21 22 /// fork的过程中复制线程 23 /// 24 /// 由于这个过程与具体的架构相关，所以放在这里 25 pub fn copy_thread( 26 current_pcb: &Arc<ProcessControlBlock>, 27 new_pcb: &Arc<ProcessControlBlock>, 28 clone_args: KernelCloneArgs, 29 current_trapframe: &TrapFrame, 30 ) -> Result<(), SystemError> { 31 unimplemented!("ProcessManager::copy_thread") 32 } 33 34 /// 切换进程 35 /// 36 /// ## 参数 37 /// 38 /// - `prev`：上一个进程的pcb 39 /// - `next`：下一个进程的pcb 40 pub unsafe fn switch_process(prev: Arc<ProcessControlBlock>, next: Arc<ProcessControlBlock>) { 41 unimplemented!("ProcessManager::switch_process") 42 } 43 } 44 45 impl ProcessControlBlock { 46 /// 获取当前进程的pcb 47 pub fn arch_current_pcb() -> Arc<Self> { 48 unimplemented!("ProcessControlBlock::arch_current_pcb") 49 } 50 } 51 52 /// PCB中与架构相关的信息 53 #[derive(Debug)] 54 #[allow(dead_code)] 55 pub struct ArchPCBInfo { 56 // todo: add arch related fields 57 } 58 59 #[allow(dead_code)] 60 impl ArchPCBInfo { 61 /// 创建一个新的ArchPCBInfo 62 /// 63 /// ## 参数 64 /// 65 /// - `kstack`：内核栈的引用 66 /// 67 /// ## 返回值 68 /// 69 /// 返回一个新的ArchPCBInfo 70 pub fn new(kstack: &KernelStack) -> Self { 71 unimplemented!("ArchPCBInfo::new") 72 } 73 // ### 从另一个ArchPCBInfo处clone,但是保留部分字段不变 74 pub fn clone_from(&mut self, from: &Self) { 75 unimplemented!("ArchPCBInfo::clone_from") 76 } 77 } 78