summaryrefslogtreecommitdiff
path: root/indra/llcommon/llfasttimer.h
diff options
context:
space:
mode:
Diffstat (limited to 'indra/llcommon/llfasttimer.h')
-rw-r--r--indra/llcommon/llfasttimer.h135
1 files changed, 2 insertions, 133 deletions
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index 4ff93a553c..2b25f2fabb 100644
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -27,140 +27,9 @@
#ifndef LL_FASTTIMER_H
#define LL_FASTTIMER_H
+// 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 <intrin.h>
-//#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
-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;
-}
-#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