improve mutex file structure

1 files changed, 27 insertions, 0 deletions

diff --git a/arch/x86_64/src/shared/mutex.cpp b/arch/x86_64/src/shared/mutex.cpp
new file mode 100644
index 0000000..65cd095
--- /dev/null
+++ b/arch/x86_64/src/shared/mutex.cpp
@@ -0,0 +1,27 @@
+#include "arch/shared/mutex.hpp"
+
+namespace teachos::arch::shared
+{
+  auto mutex::lock() -> void
+  {
+    while (true)
+    {
+      if (!locked.exchange(true, std::memory_order_acquire))
+      {
+        return;
+      }
+    }
+  }
+
+  /**
+   * @brief Try to lock the mutex (non-blocking)
+   *
+   * @return true if lock has been acquired and false otherwise
+   */
+  auto mutex::try_lock() -> bool { return !locked.exchange(true, std::memory_order_acquire); }
+
+  /**
+   * @brief Unlock the mutex
+   */
+  auto mutex::unlock() -> void { locked.store(false, std::memory_order_release); }
+}  // namespace teachos::arch::shared
\ No newline at end of file