MdeModulePkg/HiiDB: Make sure database update behaviors are atomic

[mirror_edk2.git] / MdeModulePkg / Universal / HiiDatabaseDxe / HiiDatabase.h

diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabase.h b/MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabase.h
index 3a6eb8a55c79306006e5e08862d5faa18bcf41ba..154e36e88f4baf4008350783dc5d5b8cdf46de17 100644 (file)
--- a/MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabase.h
+++ b/MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabase.h
@@ -61,6 +61,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define BITMAP_LEN_8_BIT(Width, Height)  ((Width) * (Height))\r
 #define BITMAP_LEN_24_BIT(Width, Height) ((Width) * (Height) * 3)\r
 \r
+extern EFI_LOCK mHiiDatabaseLock;\r
+\r
 //\r
 // IFR data structure\r
 //\r