From a5619d16f74863168f45b04b37cc6383e1a92263 Mon Sep 17 00:00:00 2001 From: Oz Linden Date: Wed, 13 Oct 2010 07:24:37 -0400 Subject: correct licenses (fix problem with license change merge) --- indra/llcommon/llfasttimer.h | 42 ++++++++++++++++++------------------------ 1 file changed, 18 insertions(+), 24 deletions(-) (limited to 'indra/llcommon/llfasttimer.h') diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h index 840d09d970..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 * $/LicenseInfo$ */ -- cgit v1.2.3 From ed64630a67c2c216c369099532323cab2e251cab Mon Sep 17 00:00:00 2001 From: "Brad Payne (Vir Linden)" Date: Tue, 30 Nov 2010 15:38:19 -0500 Subject: Use architecture-independent code for windows fast timers --- indra/llcommon/llfasttimer.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) mode change 100644 => 100755 indra/llcommon/llfasttimer.h (limited to 'indra/llcommon/llfasttimer.h') diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h old mode 100644 new mode 100755 index 4ff93a553c..5c2df877b0 --- a/indra/llcommon/llfasttimer.h +++ b/indra/llcommon/llfasttimer.h @@ -64,6 +64,7 @@ // shift off lower 8 bits for lower resolution but longer term timing // on 1Ghz machine, a 32-bit word will hold ~1000 seconds of timing +#ifdef USE_RDTSC inline U32 LLFastTimer::getCPUClockCount32() { U32 ret_val; @@ -94,6 +95,20 @@ inline U64 LLFastTimer::getCPUClockCount64() } return ret_val; } +#else +LL_COMMON_API U64 get_clock_count(); // in lltimer.cpp +// These use QueryPerformanceCounter, which is arguably fine and also works on amd architectures. +inline U32 LLFastTimer::getCPUClockCount32() +{ + return (U32)(get_clock_count()>>8); +} + +inline U64 LLFastTimer::getCPUClockCount64() +{ + return get_clock_count(); +} +#endif + #endif -- cgit v1.2.3 From 1e49e9ae323395721ef2d845979b0cec5abb9b75 Mon Sep 17 00:00:00 2001 From: "Brad Payne (Vir Linden)" Date: Wed, 1 Dec 2010 13:08:09 -0500 Subject: Moving timer code for AMD issue diagnosis --- indra/llcommon/llfasttimer.h | 151 +------------------------------------------ 1 file changed, 3 insertions(+), 148 deletions(-) (limited to 'indra/llcommon/llfasttimer.h') diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h index 5c2df877b0..c177027f4e 100755 --- a/indra/llcommon/llfasttimer.h +++ b/indra/llcommon/llfasttimer.h @@ -27,155 +27,10 @@ #ifndef LL_FASTTIMER_H #define LL_FASTTIMER_H +// Temporarily(?) de-inlined these functions to simplify diagnosis of problems. +// Implementation of getCPUClockCount32() and getCPUClockCount64 are now in llfastertimer_class.cpp. + // 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 -// - -// -// NOTE: put back in when we aren't using platform sdk anymore -// -// because MS has different signatures for these functions in winnt.h -// need to rename them to avoid conflicts -//#define _interlockedbittestandset _renamed_interlockedbittestandset -//#define _interlockedbittestandreset _renamed_interlockedbittestandreset -//#include -//#undef _interlockedbittestandset -//#undef _interlockedbittestandreset - -//inline U32 LLFastTimer::getCPUClockCount32() -//{ -// U64 time_stamp = __rdtsc(); -// return (U32)(time_stamp >> 8); -//} -// -//// return full timer value, *not* shifted by 8 bits -//inline U64 LLFastTimer::getCPUClockCount64() -//{ -// return __rdtsc(); -//} - -// shift off lower 8 bits for lower resolution but longer term timing -// on 1Ghz machine, a 32-bit word will hold ~1000 seconds of timing -#ifdef USE_RDTSC -inline U32 LLFastTimer::getCPUClockCount32() -{ - U32 ret_val; - __asm - { - _emit 0x0f - _emit 0x31 - shr eax,8 - shl edx,24 - or eax, edx - mov dword ptr [ret_val], eax - } - return ret_val; -} - -// return full timer value, *not* shifted by 8 bits -inline U64 LLFastTimer::getCPUClockCount64() -{ - U64 ret_val; - __asm - { - _emit 0x0f - _emit 0x31 - mov eax,eax - mov edx,edx - mov dword ptr [ret_val+4], edx - mov dword ptr [ret_val], eax - } - return ret_val; -} -#else -LL_COMMON_API U64 get_clock_count(); // in lltimer.cpp -// These use QueryPerformanceCounter, which is arguably fine and also works on amd architectures. -inline U32 LLFastTimer::getCPUClockCount32() -{ - return (U32)(get_clock_count()>>8); -} - -inline U64 LLFastTimer::getCPUClockCount64() -{ - return get_clock_count(); -} -#endif - -#endif - - -#if (LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__)) -// -// 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. -inline U64 LLFastTimer::getCPUClockCount64() -{ - struct timespec tp; - -#ifdef CLOCK_MONOTONIC // MONOTONIC supported at build-time? - if (-1 == clock_gettime(CLOCK_MONOTONIC,&tp)) // if MONOTONIC isn't supported at runtime then ouch, try REALTIME -#endif - clock_gettime(CLOCK_REALTIME,&tp); - - return (tp.tv_sec*LLFastTimer::sClockResolution)+tp.tv_nsec; -} - -inline U32 LLFastTimer::getCPUClockCount32() -{ - return (U32)(LLFastTimer::getCPUClockCount64() >> 8); -} -#endif // (LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__)) - - -#if (LL_LINUX || LL_SOLARIS || LL_DARWIN) && (defined(__i386__) || defined(__amd64__)) -// -// Mac+Linux+Solaris FAST x86 implementation of CPU clock -inline U32 LLFastTimer::getCPUClockCount32() -{ - U64 x; - __asm__ volatile (".byte 0x0f, 0x31": "=A"(x)); - return (U32)(x >> 8); -} - -inline U64 LLFastTimer::getCPUClockCount64() -{ - U64 x; - __asm__ volatile (".byte 0x0f, 0x31": "=A"(x)); - return x; -} -#endif - - -#if ( LL_DARWIN && !(defined(__i386__) || defined(__amd64__))) -// -// Mac PPC (deprecated) implementation of CPU clock -// -// Just use gettimeofday implementation for now - -inline U32 LLFastTimer::getCPUClockCount32() -{ - return (U32)(get_clock_count()>>8); -} - -inline U64 LLFastTimer::getCPUClockCount64() -{ - return get_clock_count(); -} -#endif - #endif // LL_LLFASTTIMER_H -- cgit v1.2.3 From f0bca5f0683db1540b640191ab2780224aceb800 Mon Sep 17 00:00:00 2001 From: "Brad Payne (Vir Linden)" Date: Thu, 2 Dec 2010 16:58:46 -0500 Subject: Cleaning up fast timer fixes --- indra/llcommon/llfasttimer.h | 1 - 1 file changed, 1 deletion(-) (limited to 'indra/llcommon/llfasttimer.h') diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h index c177027f4e..2b25f2fabb 100755 --- a/indra/llcommon/llfasttimer.h +++ b/indra/llcommon/llfasttimer.h @@ -27,7 +27,6 @@ #ifndef LL_FASTTIMER_H #define LL_FASTTIMER_H -// Temporarily(?) de-inlined these functions to simplify diagnosis of problems. // Implementation of getCPUClockCount32() and getCPUClockCount64 are now in llfastertimer_class.cpp. // pull in the actual class definition -- cgit v1.2.3