diff options
Diffstat (limited to 'indra/llcommon/llfasttimer.h')
| -rw-r--r-- | indra/llcommon/llfasttimer.h | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h index 48461df6ae..4ff93a553c 100644 --- a/indra/llcommon/llfasttimer.h +++ b/indra/llcommon/llfasttimer.h @@ -2,31 +2,25 @@ * @file llfasttimer.h * @brief Inline implementations of fast timers. * - * $LicenseInfo:firstyear=2004&license=viewergpl$ - * - * Copyright (c) 2004-2009, Linden Research, Inc. - * + * $LicenseInfo:firstyear=2004&license=viewerlgpl$ * Second Life Viewer Source Code - * The source code in this file ("Source Code") is provided by Linden Lab - * to you under the terms of the GNU General Public License, version 2.0 - * ("GPL"), unless you have obtained a separate licensing agreement - * ("Other License"), formally executed by you and Linden Lab. Terms of - * the GPL can be found in doc/GPL-license.txt in this distribution, or - * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 - * - * There are special exceptions to the terms and conditions of the GPL as - * it is applied to this Source Code. View the full text of the exception - * in the file doc/FLOSS-exception.txt in this software distribution, or - * online at - * http://secondlifegrid.net/programs/open_source/licensing/flossexception - * - * By copying, modifying or distributing this software, you acknowledge - * that you have read and understood your obligations described above, - * and agree to abide by those obligations. - * - * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO - * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, - * COMPLETENESS OR PERFORMANCE. + * Copyright (C) 2010, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ @@ -36,6 +30,10 @@ // pull in the actual class definition #include "llfasttimer_class.h" +// +// Important note: These implementations must be FAST! +// + #if LL_WINDOWS // // Windows implementation of CPU clock @@ -99,15 +97,17 @@ inline U64 LLFastTimer::getCPUClockCount64() #endif -#if LL_LINUX || LL_SOLARIS +#if (LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__)) // -// Linux and Solaris implementation of CPU clock - all architectures. +// Linux and Solaris implementation of CPU clock - non-x86. +// This is accurate but SLOW! Only use out of desperation. // // Try to use the MONOTONIC clock if available, this is a constant time counter -// with nanosecond resolution (but not necessarily accuracy) and attempts are made -// to synchronize this value between cores at kernel start. It should not be affected -// by CPU frequency. If not available use the REALTIME clock, but this may be affected by -// NTP adjustments or other user activity affecting the system time. +// with nanosecond resolution (but not necessarily accuracy) and attempts are +// made to synchronize this value between cores at kernel start. It should not +// be affected by CPU frequency. If not available use the REALTIME clock, but +// this may be affected by NTP adjustments or other user activity affecting +// the system time. inline U64 LLFastTimer::getCPUClockCount64() { struct timespec tp; @@ -124,12 +124,12 @@ inline U32 LLFastTimer::getCPUClockCount32() { return (U32)(LLFastTimer::getCPUClockCount64() >> 8); } -#endif // (LL_LINUX || LL_SOLARIS)) +#endif // (LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__)) -#if (LL_DARWIN) && (defined(__i386__) || defined(__amd64__)) +#if (LL_LINUX || LL_SOLARIS || LL_DARWIN) && (defined(__i386__) || defined(__amd64__)) // -// Mac x86 implementation of CPU clock +// Mac+Linux+Solaris FAST x86 implementation of CPU clock inline U32 LLFastTimer::getCPUClockCount32() { U64 x; |