time-r0drv-darwin.cpp revision 8c99dcd207cf5b7bee01f95fbe19728a94076f94
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * IPRT - Time, Ring-0 Driver, Darwin.
e64031e20c39650a7bc902a3e1aba613b9415deevboxsync * Copyright (C) 2006-2007 Sun Microsystems, Inc.
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * available from http://www.virtualbox.org. This file is free software;
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * you can redistribute it and/or modify it under the terms of the GNU
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * General Public License (GPL) as published by the Free Software
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * The contents of this file may alternatively be used under the terms
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * of the Common Development and Distribution License Version 1.0
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * VirtualBox OSE distribution, in which case the provisions of the
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * CDDL are applicable instead of those of the GPL.
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * You may elect to license modified versions of this file under the
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8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
aa4bcf0a4b2db3ac352b56a291d49cb8d4b66d32vboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync * additional information or have any questions.
aa4bcf0a4b2db3ac352b56a291d49cb8d4b66d32vboxsync/*******************************************************************************
aa4bcf0a4b2db3ac352b56a291d49cb8d4b66d32vboxsync* Header Files *
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync*******************************************************************************/
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync /* first call: check if life is simple or not. */
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync ASMAtomicXchgS8((int8_t * volatile)&s_fSimple, Info.denom == 1 && Info.numer == 1);
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync /* special case: absolute time is in nanoseconds */
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync /* general case: let mach do the mult/div for us. */
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync absolutetime_to_nanoseconds(mach_absolute_time(), &u64);
8b4a8db7768e94d025f1216ecfcd50d727fa2b7cvboxsync return RTTimeSpecSetNano(pTime, (uint64_t)uSecs * 1000000000 + uNanosecs);