添加rtthread相关代码

2025-06-13 14:38:32 +08:00
parent caf2d9f0c5
commit 160f9f8201
1809 changed files with 648100 additions and 10 deletions
--- a/riscv/rtthread/components/lwp/lwp_jobctrl.c
+++ b/riscv/rtthread/components/lwp/lwp_jobctrl.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-11-13     Shell        init ver.
+ */
+
+#define DBG_TAG "lwp.tty"
+#define DBG_LVL DBG_INFO
+#include <rtdbg.h>
+
+#include <terminal/terminal.h>
+#include "lwp_internal.h"
+
+static void jobctrl_set_pgrp_orphaned(struct rt_processgroup *pgrp)
+{
+    rt_lwp_t proc, nx_proc;
+    PGRP_LOCK(pgrp);
+
+    pgrp->is_orphaned = 1;
+    rt_list_for_each_entry(proc, &pgrp->process, pgrp_node)
+    {
+        LWP_LOCK(proc);
+        if (proc->jobctl_stopped)
+        {
+            LWP_UNLOCK(proc);
+            rt_list_for_each_entry_safe(proc, nx_proc, &pgrp->process, pgrp_node)
+            {
+                LWP_LOCK(proc);
+                lwp_signal_kill(proc, SIGHUP, SI_KERNEL, 0);
+                lwp_signal_kill(proc, SIGCONT, SI_KERNEL, 0);
+                LWP_UNLOCK(proc);
+            }
+        }
+        LWP_UNLOCK(proc);
+    }
+
+    PGRP_UNLOCK(pgrp);
+}
+
+void lwp_jobctrl_on_exit(struct rt_lwp *lwp)
+{
+    rt_processgroup_t pgrp;
+    rt_session_t session;
+    lwp_tty_t tp;
+
+    pgrp = lwp->pgrp;
+    RT_ASSERT(pgrp);
+    session = pgrp->session;
+    RT_ASSERT(session);
+
+    /**
+     * as a session leader, we have to mark tty as freed. So others can race to
+     * take it before we actually close and released that tty
+     */
+    SESS_LOCK(session);
+    if (session->sid == lwp->pid)
+    {
+        tp = session->ctty;
+        session->leader = 0;
+
+        /* signal to foreground group that modem is disconnected */
+        if (tp)
+        {
+            tty_lock(tp);
+            if (tp->t_session == session)
+                lwp_tty_signal_pgrp(tp, SIGHUP);
+            tty_unlock(tp);
+        }
+
+        /* revoke tty vnode ? */
+
+        rt_list_for_each_entry(pgrp, &session->processgroup, pgrp_list_node)
+        {
+            jobctrl_set_pgrp_orphaned(pgrp);
+        }
+
+    }
+    SESS_UNLOCK(session);
+
+    /* release tty */
+    /* allow tty stolen? */
+}