From 52ca0d9816a2bf1f9082693ca886b9d0bed95365 Mon Sep 17 00:00:00 2001
From: qhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 17 Nov 2008 14:21:43 +0000
Subject: Add 3 macros to manager Timer events.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6563 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Include/Library/UefiLib.h | 41 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'MdePkg/Include/Library')

diff --git a/MdePkg/Include/Library/UefiLib.h b/MdePkg/Include/Library/UefiLib.h
index 9f888da68f..8c5b628aa9 100644
--- a/MdePkg/Include/Library/UefiLib.h
+++ b/MdePkg/Include/Library/UefiLib.h
@@ -29,6 +29,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Protocol/DriverDiagnostics.h>
 #include <Protocol/DriverDiagnostics2.h>
 
+#include <Library/BaseLib.h>
+
 ///
 /// Unicode String Table
 ///
@@ -56,6 +58,45 @@ typedef struct {
 } EFI_LOCK;
 
 
+/**
+  Macro that returns the number of 100 ns units for a specified number of microseconds.
+  Useful for managing EFI timer events.
+
+  @param  Microseconds           Number of microseonds.
+
+  @return The number of 100 ns units equivalent to the number of microseconds specified
+          by Microseconds.
+
+**/
+#define EFI_TIMER_PERIOD_MICROSECONDS(Microseconds) MultU64x32((UINT64)(Microseconds), 10)
+
+
+/**
+  Macro that returns the number of 100 ns units for a specified number of milliseoconds.
+  Useful for managing EFI timer events.
+
+  @param  Milliseconds           Number of milliseconds.
+
+  @return The number of 100 ns units equivalent to the number of milliseconds specified
+          by Milliseconds.
+
+**/
+#define EFI_TIMER_PERIOD_MILLISECONDS(Milliseconds) MultU64x32((UINT64)(Milliseconds), 10000)
+
+
+/**
+  Macro that returns the number of 100 ns units for a specified number of seoconds.
+  Useful for managing EFI timer events.
+
+  @param  Seconds                Number of seconds.
+
+  @return The number of 100 ns units equivalent to the number of seconds specified
+          by Seconds.
+
+**/
+#define EFI_TIMER_PERIOD_SECONDS(Seconds)           MultU64x32((UINT64)(Seconds), 10000000)
+
+
 /**
   This function searches the list of configuration tables stored in the EFI System 
   Table for a table with a GUID that matches TableGuid.  If a match is found, 
-- 
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