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-rw-r--r--indra/llcommon/llfasttimer.h24
-rw-r--r--indra/llcommon/llfasttimer_class.cpp6
-rw-r--r--indra/llcommon/llprocessor.cpp11
-rw-r--r--indra/llcommon/llsys.cpp14
-rw-r--r--indra/llcommon/llsys.h4
-rw-r--r--indra/llcommon/lltimer.cpp2
6 files changed, 38 insertions, 23 deletions
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index 48461df6ae..840d09d970 100644
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -36,6 +36,10 @@
// 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 +103,17 @@ 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 +130,12 @@ 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;
diff --git a/indra/llcommon/llfasttimer_class.cpp b/indra/llcommon/llfasttimer_class.cpp
index 2e5edb1f3b..f39a4e6619 100644
--- a/indra/llcommon/llfasttimer_class.cpp
+++ b/indra/llcommon/llfasttimer_class.cpp
@@ -230,17 +230,17 @@ void LLFastTimer::DeclareTimer::updateCachedPointers()
}
//static
-#if LL_LINUX || LL_SOLARIS || ( LL_DARWIN && !(defined(__i386__) || defined(__amd64__)) )
+#if (LL_DARWIN || LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__))
U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
{
return sClockResolution >> 8;
}
-#else // windows or x86-mac
+#else // windows or x86-mac or x86-linux or x86-solaris
U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer
{
static U64 sCPUClockFrequency = U64(CProcessor().GetCPUFrequency(50));
- // we drop the low-order byte in out timers, so report a lower frequency
+ // we drop the low-order byte in our timers, so report a lower frequency
return sCPUClockFrequency >> 8;
}
#endif
diff --git a/indra/llcommon/llprocessor.cpp b/indra/llcommon/llprocessor.cpp
index 8a4a4a8f9a..f6ab55a6b5 100644
--- a/indra/llcommon/llprocessor.cpp
+++ b/indra/llcommon/llprocessor.cpp
@@ -60,6 +60,10 @@
# include <windows.h>
#endif
+#if LL_LINUX
+#include "llsys.h"
+#endif // LL_LINUX
+
#if !LL_DARWIN && !LL_SOLARIS
#ifdef PROCESSOR_FREQUENCY_MEASURE_AVAILABLE
@@ -116,6 +120,11 @@ CProcessor::CProcessor()
////////////////////////////////////////////////////////////////////////////
F64 CProcessor::GetCPUFrequency(unsigned int uiMeasureMSecs)
{
+#if LL_LINUX
+ // use the shinier LLCPUInfo interface
+ return 1000000.0F * gSysCPU.getMHz();
+#endif
+
#ifndef PROCESSOR_FREQUENCY_MEASURE_AVAILABLE
return 0;
#else
@@ -781,7 +790,7 @@ bool CProcessor::AnalyzeAMDProcessor()
case 5: // Family = 5: K5 / K6 processor family
switch (CPUInfo.uiModel)
{
- case 0: // Model = 0: K5 SSA 5 (Pentium Rating *ggg* 75, 90 and 100 Mhz)
+ case 0: // Model = 0: K5 SSA 5 (Pentium Rating *ggg* 75, 90 and 100 MHz)
strcpy(CPUInfo.strModel, "AMD K5 SSA5 (PR75, PR90, PR100)"); /* Flawfinder: ignore */
strncat(strCPUName, "AMD K5 SSA5 (PR75, PR90, PR100)", sizeof(strCPUName) - strlen(strCPUName) -1); /* Flawfinder: ignore */
break;
diff --git a/indra/llcommon/llsys.cpp b/indra/llcommon/llsys.cpp
index 0272c55db2..52b1b63209 100644
--- a/indra/llcommon/llsys.cpp
+++ b/indra/llcommon/llsys.cpp
@@ -519,15 +519,15 @@ LLCPUInfo::LLCPUInfo()
mHasSSE = info->_Ext.SSE_StreamingSIMD_Extensions;
mHasSSE2 = info->_Ext.SSE2_StreamingSIMD2_Extensions;
mHasAltivec = info->_Ext.Altivec_Extensions;
- mCPUMhz = (S32)(proc.GetCPUFrequency(50)/1000000.0);
+ mCPUMHz = (F64)(proc.GetCPUFrequency(50)/1000000.0F);
mFamily.assign( info->strFamily );
mCPUString = "Unknown";
#if LL_WINDOWS || LL_DARWIN || LL_SOLARIS
out << proc.strCPUName;
- if (200 < mCPUMhz && mCPUMhz < 10000) // *NOTE: cpu speed is often way wrong, do a sanity check
+ if (200 < mCPUMHz && mCPUMHz < 10000) // *NOTE: cpu speed is often way wrong, do a sanity check
{
- out << " (" << mCPUMhz << " MHz)";
+ out << " (" << mCPUMHz << " MHz)";
}
mCPUString = out.str();
@@ -572,7 +572,7 @@ LLCPUInfo::LLCPUInfo()
if (LLStringUtil::convertToF64(cpuinfo["cpu mhz"], mhz)
&& 200.0 < mhz && mhz < 10000.0)
{
- mCPUMhz = (S32)llrint(mhz);
+ mCPUMHz = (F64)(mhz);
}
if (!cpuinfo["model name"].empty())
mCPUString = cpuinfo["model name"];
@@ -595,9 +595,9 @@ bool LLCPUInfo::hasSSE2() const
return mHasSSE2;
}
-S32 LLCPUInfo::getMhz() const
+F64 LLCPUInfo::getMHz() const
{
- return mCPUMhz;
+ return mCPUMHz;
}
std::string LLCPUInfo::getCPUString() const
@@ -644,7 +644,7 @@ void LLCPUInfo::stream(std::ostream& s) const
s << "->mHasSSE: " << (U32)mHasSSE << std::endl;
s << "->mHasSSE2: " << (U32)mHasSSE2 << std::endl;
s << "->mHasAltivec: " << (U32)mHasAltivec << std::endl;
- s << "->mCPUMhz: " << mCPUMhz << std::endl;
+ s << "->mCPUMHz: " << mCPUMHz << std::endl;
s << "->mCPUString: " << mCPUString << std::endl;
}
diff --git a/indra/llcommon/llsys.h b/indra/llcommon/llsys.h
index c2c45bec9a..0b34951149 100644
--- a/indra/llcommon/llsys.h
+++ b/indra/llcommon/llsys.h
@@ -81,7 +81,7 @@ public:
bool hasAltivec() const;
bool hasSSE() const;
bool hasSSE2() const;
- S32 getMhz() const;
+ F64 getMHz() const;
// Family is "AMD Duron" or "Intel Pentium Pro"
const std::string& getFamily() const { return mFamily; }
@@ -90,7 +90,7 @@ private:
bool mHasSSE;
bool mHasSSE2;
bool mHasAltivec;
- S32 mCPUMhz;
+ F64 mCPUMHz;
std::string mFamily;
std::string mCPUString;
};
diff --git a/indra/llcommon/lltimer.cpp b/indra/llcommon/lltimer.cpp
index 25b768079b..6111db2bfa 100644
--- a/indra/llcommon/lltimer.cpp
+++ b/indra/llcommon/lltimer.cpp
@@ -209,7 +209,7 @@ F64 calc_clock_frequency(U32 uiMeasureMSecs)
// Both Linux and Mac use gettimeofday for accurate time
F64 calc_clock_frequency(unsigned int uiMeasureMSecs)
{
- return 1000000.0; // microseconds, so 1 Mhz.
+ return 1000000.0; // microseconds, so 1 MHz.
}
U64 get_clock_count()
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 14:25:26 +0000