mirror of
https://port.numenaute.org/aleajactaest/khanat-opennel-code.git
synced 2024-11-19 21:56:13 +00:00
Added: Implementation of timer tests for linux
This commit is contained in:
kaetemi
parent
26112d1aa4
commit
36f5ec9ac2
2 changed files with 169 additions and 66 deletions
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@ -221,6 +221,9 @@ void CPThread::wait ()
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bool CPThread::setCPUMask(uint64 cpuMask)
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{
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#ifdef __USE_GNU
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nlwarning("This code does not work. May cause a segmentation fault...");
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sint res = pthread_setaffinity_np(_ThreadHandle, sizeof(uint64), (const cpu_set_t*)&cpuMask);
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if (res)
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@ -228,9 +231,14 @@ bool CPThread::setCPUMask(uint64 cpuMask)
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nlwarning("pthread_setaffinity_np() returned %d", res);
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return false;
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}
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#endif // __USE_GNU
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return true;
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#else // __USE_GNU
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return false;
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#endif // __USE_GNU
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}
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/*
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@ -238,9 +246,12 @@ bool CPThread::setCPUMask(uint64 cpuMask)
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*/
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uint64 CPThread::getCPUMask()
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{
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uint64 cpuMask = 1;
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#ifdef __USE_GNU
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nlwarning("This code does not work. May cause a segmentation fault...");
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uint64 cpuMask = 0;
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sint res = pthread_getaffinity_np(_ThreadHandle, sizeof(uint64), (cpu_set_t*)&cpuMask);
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if (res)
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@ -248,9 +259,14 @@ uint64 CPThread::getCPUMask()
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nlwarning("pthread_getaffinity_np() returned %d", res);
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return 0;
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}
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#endif // __USE_GNU
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return cpuMask;
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#else // __USE_GNU
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return 0;
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#endif // __USE_GNU
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}
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void CPThread::setPriority(TThreadPriority priority)
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@ -311,9 +327,9 @@ IProcess *IProcess::getCurrentProcess ()
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*/
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uint64 CPProcess::getCPUMask()
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{
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uint64 cpuMask = 1;
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#ifdef __USE_GNU
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uint64 cpuMask = 0;
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sint res = sched_getaffinity(getpid(), sizeof(uint64), (cpu_set_t*)&cpuMask);
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if (res)
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@ -321,15 +337,21 @@ uint64 CPProcess::getCPUMask()
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nlwarning("sched_getaffinity() returned %d, errno = %d: %s", res, errno, strerror(errno));
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return 0;
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}
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#endif // __USE_GNU
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return cpuMask;
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#else // __USE_GNU
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return 0;
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#endif // __USE_GNU
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}
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/// set the CPU mask
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bool CPProcess::setCPUMask(uint64 cpuMask)
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{
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#ifdef __USE_GNU
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sint res = sched_setaffinity(getpid(), sizeof(uint64), (const cpu_set_t*)&cpuMask);
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if (res)
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@ -337,9 +359,14 @@ bool CPProcess::setCPUMask(uint64 cpuMask)
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nlwarning("sched_setaffinity() returned %d, errno = %d: %s", res, errno, strerror(errno));
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return false;
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}
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#endif // __USE_GNU
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return true;
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#else // __USE_GNU
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return false;
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#endif // __USE_GNU
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}
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@ -42,13 +42,63 @@ namespace {
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bool a_HaveQueryPerformance = false;
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LARGE_INTEGER a_QueryPerformanceFrequency;
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#endif
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#ifdef NL_OS_UNIX
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# if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
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# if defined(_POSIX_MONOTONIC_CLOCK) && (_POSIX_MONOTONIC_CLOCK >= 0)
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# define NL_MONOTONIC_CLOCK
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# endif
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# endif
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# ifdef NL_MONOTONIC_CLOCK
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bool a_CheckedMonotonicClock = false;
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bool a_HasMonotonicClock = false;
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uint64 a_MonotonicClockFrequency = 0;
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uint64 a_MonotonicClockResolutionNs = 0;
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bool hasMonotonicClock()
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{
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if (!a_CheckedMonotonicClock)
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{
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/* Initialize the local time engine.
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* On Unix, this method will find out if the Monotonic Clock is supported
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* (seems supported by kernel 2.6, not by kernel 2.4). See getLocalTime().
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*/
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struct timespec tv;
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if ((clock_gettime( CLOCK_MONOTONIC, &tv ) == 0) &&
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(clock_getres( CLOCK_MONOTONIC, &tv ) == 0))
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{
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// nldebug( "Monotonic local time supported (resolution %.6f ms)", ((float)tv.tv_sec)*1000.0f + ((float)tv.tv_nsec)/1000000.0f );
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if (tv.tv_sec > 0)
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{
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nlwarning("Monotonic clock not ok, resolution > 1s");
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a_HasMonotonicClock = false;
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}
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else
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{
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uint64 nsPerTick = tv.tv_nsec;
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uint64 nsPerSec = 1000000000L;
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uint64 tickPerSec = nsPerSec / nsPerTick;
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a_MonotonicClockFrequency = tickPerSec;
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a_MonotonicClockResolutionNs = nsPerTick;
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a_HasMonotonicClock = true;
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}
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}
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else
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{
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a_HasMonotonicClock = false;
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}
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a_CheckedMonotonicClock = true;
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}
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return a_HasMonotonicClock;
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}
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# endif
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#endif
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}
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void CTime::probeTimerInfo(CTime::CTimerInfo &result)
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{
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breakable
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{
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#ifdef NL_OS_WINDOWS
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#ifdef NL_OS_WINDOWS
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LARGE_INTEGER winPerfFreq;
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LARGE_INTEGER winPerfCount;
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DWORD lowResTime;
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@ -78,21 +128,34 @@ void CTime::probeTimerInfo(CTime::CTimerInfo &result)
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{
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lowResTime = timeGetTime();
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}
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#else
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// nldebug("Probe of timer info not implemented");
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result.IsHighPrecisionAvailable = false;
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result.RequiresSingleCore = true;
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break;
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#endif
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#else
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// Other platforms are awesome. Generic implementation for now.
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TTime localTime = getLocalTime();
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result.IsHighPrecisionAvailable = true;
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result.HighPrecisionResolution = 0;
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# ifdef NL_MONOTONIC_CLOCK
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timespec monoClock;
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if (hasMonotonicClock())
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{
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clock_gettime(CLOCK_MONOTONIC, &monoClock);
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result.HighPrecisionResolution = a_MonotonicClockFrequency;
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}
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else
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{
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nldebug("Monotonic clock not available");
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}
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# endif
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#endif
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uint64 cpuMask = IProcess::getCurrentProcess()->getCPUMask();
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uint64 threadMask = IThread::getCurrentThread()->getCPUMask();
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#ifdef NL_OS_WINDOWS
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#else
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TTicks timerFrequency = 0;
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#endif
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#ifdef NL_OS_WINDOWS
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uint64 threadMask = IThread::getCurrentThread()->getCPUMask(); // broken on linux, don't expect it to work anywhere
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#else
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uint64 threadMask = cpuMask;
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#endif
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uint identical = 0; // Identical stamps may indicate the os handling backwards glitches.
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uint backwards = 0; // Happens when the timers are not always in sync and the implementation is faulty.
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@ -109,7 +172,12 @@ void CTime::probeTimerInfo(CTime::CTimerInfo &result)
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{
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if (cpuMask & currentBit)
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{
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IThread::getCurrentThread()->setCPUMask(currentBit);
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#ifdef NL_OS_WINDOWS
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if (!IThread::getCurrentThread()->setCPUMask(currentBit))
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#else
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if (!IProcess::getCurrentProcess()->setCPUMask(currentBit))
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#endif
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break; // Thread was set to last cpu.
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#ifdef NL_OS_WINDOWS
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// Make sure the thread is rescheduled.
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SwitchToThread();
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@ -152,13 +220,53 @@ void CTime::probeTimerInfo(CTime::CTimerInfo &result)
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++regular;
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lowResTime = lowResTimeN;
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}
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#else
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#ifdef NL_OS_UNIX
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sched_yield();
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#else
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nlSleep(0);
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#endif
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# ifdef NL_MONOTONIC_CLOCK
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if (hasMonotonicClock())
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{
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timespec monoClockN;
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clock_gettime(CLOCK_MONOTONIC, &monoClockN);
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if (monoClock.tv_sec == monoClockN.tv_sec && monoClock.tv_nsec == monoClockN.tv_nsec)
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++identical;
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if (monoClockN.tv_sec < monoClock.tv_sec || (monoClock.tv_sec == monoClockN.tv_sec && monoClockN.tv_nsec < monoClock.tv_nsec))
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++backwards;
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if (monoClock.tv_sec == monoClockN.tv_sec && (monoClockN.tv_nsec - monoClock.tv_nsec > 50000000L))
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++skipping;
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else if ((monoClock.tv_sec == monoClockN.tv_sec && monoClock.tv_nsec < monoClockN.tv_nsec) || monoClock.tv_sec < monoClockN.tv_sec)
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++regular;
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monoClock.tv_sec = monoClockN.tv_sec;
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monoClock.tv_nsec = monoClockN.tv_nsec;
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}
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else
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# endif
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{
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TTime localTimeN = getLocalTime();
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if (localTimeN == localTime)
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++identical;
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if (localTimeN < localTime || localTimeN - localTime < 0)
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++backwards;
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if (localTimeN - localTime > 50)
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++skipping;
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else if (localTimeN > localTime)
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++regular;
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localTime = localTimeN;
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}
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#endif
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}
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currentBit <<= 1;
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}
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}
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#ifdef NL_OS_WINDOWS
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IThread::getCurrentThread()->setCPUMask(threadMask);
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#else
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IProcess::getCurrentProcess()->setCPUMask(threadMask);
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#endif
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nldebug("Timer resolution: %i Hz", (int)(result.HighPrecisionResolution));
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nldebug("Time identical: %i, backwards: %i, regular: %i, skipping: %i, frequency bug: %i", identical, backwards, regular, skipping, frequencybug);
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@ -266,49 +374,17 @@ TTime CTime::getLocalTime ()
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#elif defined (NL_OS_UNIX)
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static bool initdone = false;
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static bool isMonotonicClockSupported = false;
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if ( ! initdone )
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#ifdef NL_MONOTONIC_CLOCK
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if (hasMonotonicClock())
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{
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#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
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#if defined(_POSIX_MONOTONIC_CLOCK) && (_POSIX_MONOTONIC_CLOCK >= 0)
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/* Initialize the local time engine.
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* On Unix, this method will find out if the Monotonic Clock is supported
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* (seems supported by kernel 2.6, not by kernel 2.4). See getLocalTime().
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*/
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struct timespec tv;
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if ( (clock_gettime( CLOCK_MONOTONIC, &tv ) == 0) &&
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(clock_getres( CLOCK_MONOTONIC, &tv ) == 0) )
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{
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// nldebug( "Monotonic local time supported (resolution %.6f ms)", ((float)tv.tv_sec)*1000.0f + ((float)tv.tv_nsec)/1000000.0f );
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isMonotonicClockSupported = true;
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}
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else
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#endif
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#endif
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{
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// nlwarning( "Monotonic local time not supported, caution with time sync" );
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}
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initdone = true;
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}
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#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
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#if defined(_POSIX_MONOTONIC_CLOCK) && (_POSIX_MONOTONIC_CLOCK >= 0)
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if ( isMonotonicClockSupported )
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{
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struct timespec tv;
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timespec tv;
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// This is not affected by system time changes.
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if ( clock_gettime( CLOCK_MONOTONIC, &tv ) != 0 )
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nlerror ("Can't get clock time again");
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return (TTime)tv.tv_sec * (TTime)1000 + (TTime)((tv.tv_nsec/*+500*/) / 1000000);
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}
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#endif
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#endif
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// This is affected by system time changes.
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