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-rwxr-xr-xexamples/kernel/mutex_priority.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/examples/kernel/mutex_priority.c b/examples/kernel/mutex_priority.c
index f647fc4039..a7702eed6f 100755
--- a/examples/kernel/mutex_priority.c
+++ b/examples/kernel/mutex_priority.c
@@ -1,4 +1,13 @@
/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ *
+ */
+
+/*
* 创建7个进程,tid20、tid21、tid22、tid23、tid24、tid25、tid26、tid27、tid28、tid29
* 各任务优先级分别为20、21、22、23、24、25、26、27、28、29,
* 其中tid26最先获得锁,tid22不需要使用到互斥锁,其他所有进程均需要使用互斥锁,
@@ -272,7 +281,7 @@ static void thread29_entry(void* parameter)
static int mutex_simple_init()
{
/* 创建互斥锁 */
- mutex = rt_mutex_create("mutex", RT_IPC_FLAG_FIFO);
+ mutex = rt_mutex_create("mutex", RT_IPC_FLAG_PRIO);
if (mutex == RT_NULL)
{
tc_stat(TC_STAT_END | TC_STAT_FAILED);