1.support multi thread 2.fix bug git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1636 6f19259b-4bc3-4df7-8a09-765794883524
1.support multi thread 2.fix bug git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1636 6f19259b-4bc3-4df7-8a09-765794883524