detach thread to auto recycle tid. fix #25

kernel/Cargo.lock

@@ -426,7 +426,7 @@ dependencies = [
 [[package]]
 name = "rcore-thread"
 version = "0.1.0"
-source = "git+https://github.com/rcore-os/rcore-thread#7236bfd2e2bde673773214739695bb2925a77ae5"
+source = "git+https://github.com/rcore-os/rcore-thread#fd972c7e3aa2b7618f625f143655c16adfd2ca78"
 dependencies = [
  "deque 0.3.2 (git+https://github.com/rcore-os/deque.git?branch=no_std)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",

kernel/src/syscall/proc.rs

@@ -7,7 +7,8 @@ use crate::fs::INodeExt;
 pub fn sys_fork(tf: &TrapFrame) -> SysResult {
     let new_thread = current_thread().fork(tf);
     let pid = new_thread.proc.lock().pid.get();
-    processor().manager().add(new_thread);
+    let tid = processor().manager().add(new_thread);
+    processor().manager().detach(tid);
     info!("fork: {} -> {}", thread::current().id(), pid);
     Ok(pid)
 }
@@ -48,6 +49,7 @@ pub fn sys_clone(
     let new_thread = current_thread().clone(tf, newsp, newtls, child_tid as usize);
     // FIXME: parent pid
     let tid = processor().manager().add(new_thread);
+    processor().manager().detach(tid);
     info!("clone: {} -> {}", thread::current().id(), tid);
     *parent_tid_ref = tid as u32;
     *child_tid_ref = tid as u32;