Add MutexSpin and several syscalls.

os/src/task/process.rs

@@ -4,7 +4,7 @@ use crate::mm::{
     translated_refmut,
 };
 use crate::trap::{TrapContext, trap_handler};
-use crate::sync::UPSafeCell;
+use crate::sync::{UPSafeCell, Mutex};
 use core::cell::RefMut;
 use super::id::RecycleAllocator;
 use super::TaskControlBlock;
@@ -32,6 +32,7 @@ pub struct ProcessControlBlockInner {
     pub fd_table: Vec<Option<Arc<dyn File + Send + Sync>>>,
     pub tasks: Vec<Option<Arc<TaskControlBlock>>>,
     pub task_res_allocator: RecycleAllocator,
+    pub mutex_list: Vec<Option<Arc<dyn Mutex>>>,
 }
 
 impl ProcessControlBlockInner {
@@ -95,6 +96,7 @@ impl ProcessControlBlock {
                 ],
                 tasks: Vec::new(),
                 task_res_allocator: RecycleAllocator::new(),
+                mutex_list: Vec::new(),
             })}
         });
         // create a main thread, we should allocate ustack and trap_cx here
@@ -207,6 +209,7 @@ impl ProcessControlBlock {
                  fd_table: new_fd_table,
                  tasks: Vec::new(),
                  task_res_allocator: RecycleAllocator::new(),
+                 mutex_list: Vec::new(),
             })}
         });
         // add child