增加锁的持有计数

2025-06-18 08:06:32 +00:00 · 2022-04-13 11:14:49 +08:00
parent ac28a3c806
commit 7295565e5e
4 changed files with 100 additions and 38 deletions
--- a/kernel/process/preempt.h
+++ b/kernel/process/preempt.h
@ -0,0 +1,23 @@
+#pragma once
+
+#include <process/process.h>
+
+/**
+ * @brief 增加自旋锁计数变量
+ * 
+ */
+#define preempt_disable()   \
+do  \
+{   \
+    --(current_pcb->preempt_count);\
+} while (0)
+
+/**
+ * @brief 减少自旋锁计数变量
+ * 
+ */
+#define preempt_enable()   \
+do  \
+{   \
+    ++(current_pcb->preempt_count);\
+}while(0)