From 9d95ad9b8d732a7c07183f473cd12ba1cca906a2 Mon Sep 17 00:00:00 2001
From: zms123456 <85141075+zmshahaha@users.noreply.github.com>
Date: Fri, 23 Aug 2024 05:52:45 +0800
Subject: [PATCH] [lwp][tid]add error log when tid depleted, and return correct
 errno when clone failed (#9327)

add error log when tid depleted, and return correct errno when clone failed
---
 components/lwp/lwp_syscall.c | 6 +++++-
 components/lwp/lwp_tid.c     | 6 ++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/components/lwp/lwp_syscall.c b/components/lwp/lwp_syscall.c
index e50e195c46..e4c373acb3 100644
--- a/components/lwp/lwp_syscall.c
+++ b/components/lwp/lwp_syscall.c
@@ -1832,6 +1832,7 @@ long _sys_clone(void *arg[])
     rt_thread_t thread = RT_NULL;
     rt_thread_t self = RT_NULL;
     int tid = 0;
+    rt_err_t err;
 
     unsigned long flags = 0;
     void *user_stack = RT_NULL;
@@ -1935,6 +1936,9 @@ long _sys_clone(void *arg[])
     rt_thread_startup(thread);
     return (long)tid;
 fail:
+    err = GET_ERRNO();
+    RT_ASSERT(err < 0);
+
     lwp_tid_put(tid);
     if (thread)
     {
@@ -1944,7 +1948,7 @@ fail:
     {
         lwp_ref_dec(lwp);
     }
-    return GET_ERRNO();
+    return (long)err;
 }
 
 rt_weak long sys_clone(void *arg[])
diff --git a/components/lwp/lwp_tid.c b/components/lwp/lwp_tid.c
index 3e330027de..e5e4889e4a 100644
--- a/components/lwp/lwp_tid.c
+++ b/components/lwp/lwp_tid.c
@@ -88,6 +88,12 @@ int lwp_tid_get(void)
         current_tid = tid;
     }
     lwp_mutex_release_safe(&tid_lock);
+
+    if (tid <= 0)
+    {
+        LOG_W("resource TID exhausted.");
+    }
+
     return tid;
 }