mirror of
https://github.com/DrBeef/Raze.git
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344 lines
6.6 KiB
C++
344 lines
6.6 KiB
C++
/*
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** stats.h
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2006 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#ifndef __STATS_H__
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#define __STATS_H__
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#include "zstring.h"
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#if defined __i386__
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#include "x86.h"
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#endif
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#if !defined _WIN32 && !defined __APPLE__
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#ifdef NO_CLOCK_GETTIME
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class cycle_t
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{
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public:
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cycle_t &operator= (const cycle_t &o) { return *this; }
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void Reset() {}
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void Clock() {}
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void ResetAndClock() {}
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void Unclock() {}
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double Time() { return 0; }
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double TimeMS() { return 0; }
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};
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#else
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#include <time.h>
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// [MK] try to use RDTSC on linux if possible
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// avoids excess latency of clock_gettime() on some platforms
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#ifdef __linux__
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extern bool PerfAvailable;
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extern double PerfToSec, PerfToMillisec;
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inline uint64_t rdtsc()
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{
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#ifdef __amd64__
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uint64_t tsc;
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asm volatile("rdtsc; shlq $32, %%rdx; orq %%rdx, %%rax":"=a"(tsc)::"%rdx");
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return tsc;
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#elif defined __ppc__
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unsigned int lower, upper, temp;
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do
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{
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asm volatile ("mftbu %0 \n mftb %1 \n mftbu %2 \n"
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: "=r"(upper), "=r"(lower), "=r"(temp));
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}
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while (upper != temp);
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return (static_cast<unsigned long long>(upper) << 32) | lower;
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#elif defined __aarch64__
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uint64_t vct;
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asm volatile("mrs %0, cntvct_el0":"=r"(vct));
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return vct;
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#elif defined __i386__
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if (CPU.bRDTSC)
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{
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uint64_t tsc;
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asm volatile ("\trdtsc\n" : "=A" (tsc));
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return tsc;
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}
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return 0;
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#else
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return 0;
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#endif // __amd64__
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}
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#endif
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class cycle_t
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{
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public:
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void Reset()
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{
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Sec = 0;
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}
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void Clock()
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{
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#ifdef __linux__
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if ( PerfAvailable )
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{
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int64_t time = rdtsc();
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Sec -= time * PerfToSec;
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return;
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}
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#endif
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timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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Sec -= ts.tv_sec + ts.tv_nsec * 1e-9;
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}
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void ResetAndClock()
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{
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Reset();
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Clock();
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}
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void Unclock()
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{
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#ifdef __linux__
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if ( PerfAvailable )
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{
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int64_t time = rdtsc();
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Sec += time * PerfToSec;
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return;
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}
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#endif
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timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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Sec += ts.tv_sec + ts.tv_nsec * 1e-9;
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}
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double Time()
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{
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return Sec;
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}
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double TimeMS()
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{
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return Sec * 1e3;
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}
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private:
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double Sec;
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};
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#endif
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#else
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// Windows and macOS
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extern double PerfToSec, PerfToMillisec;
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#if defined(_MSC_VER) && !defined(_M_ARM64)
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// Trying to include intrin.h here results in some bizarre errors, so I'm just
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// going to duplicate the function prototype instead.
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//#include <intrin.h>
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extern "C" unsigned __int64 __rdtsc(void);
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#pragma intrinsic(__rdtsc)
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inline unsigned __int64 rdtsc()
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{
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return __rdtsc();
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}
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#elif defined(_MSC_VER) && defined(_M_ARM64)
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#include <intrin.h>
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inline unsigned __int64 rdtsc()
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{
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return _ReadStatusReg(ARM64_SYSREG(0b11, 0b011, 0b1001, 0b1101, 0b000)); //_ReadStatusReg(PMCCNTR_EL0);
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}
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#elif defined __APPLE__ && (defined __i386__ || defined __x86_64__)
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inline uint64_t rdtsc()
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{
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return __builtin_ia32_rdtsc();
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}
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#else
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inline uint64_t rdtsc()
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{
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#ifdef __amd64__
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uint64_t tsc;
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asm volatile ("rdtsc; shlq $32, %%rdx; orq %%rdx, %%rax" : "=a" (tsc) :: "%rdx");
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return tsc;
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#elif defined __ppc__
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unsigned int lower, upper, temp;
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do
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{
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asm volatile ("mftbu %0 \n mftb %1 \n mftbu %2 \n"
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: "=r"(upper), "=r"(lower), "=r"(temp));
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}
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while (upper != temp);
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return (static_cast<unsigned long long>(upper) << 32) | lower;
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#elif defined __aarch64__
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uint64_t vct;
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asm volatile("mrs %0, cntvct_el0":"=r"(vct));
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return vct;
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#elif defined __i386__ // i386
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if (CPU.bRDTSC)
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{
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uint64_t tsc;
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asm volatile ("\trdtsc\n" : "=A" (tsc));
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return tsc;
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}
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return 0;
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#else
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return 0;
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#endif // __amd64__
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}
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#endif
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class cycle_t
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{
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public:
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void Reset()
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{
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Counter = 0;
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}
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void ResetAndClock()
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{
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Counter = -static_cast<int64_t>(rdtsc());
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}
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void Clock()
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{
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int64_t time = rdtsc();
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Counter -= time;
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}
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void Unclock(bool checkvar = true)
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{
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int64_t time = rdtsc();
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Counter += time;
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}
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double Time()
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{
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return Counter * PerfToSec;
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}
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double TimeMS()
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{
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return Counter * PerfToMillisec;
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}
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int64_t GetRawCounter()
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{
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return Counter;
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}
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private:
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int64_t Counter;
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};
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#endif
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class glcycle_t : public cycle_t
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{
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public:
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static bool active;
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void Clock()
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{
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if (active) cycle_t::Clock();
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}
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void Unclock()
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{
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if (active) cycle_t::Unclock();
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}
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};
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// Helper for code that uses a timer and has multiple exit points.
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class Clocker
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{
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public:
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explicit Clocker(glcycle_t& clck)
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: clock(clck)
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{
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clock.Clock();
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}
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~Clocker()
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{ // unlock
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clock.Unclock();
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}
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Clocker(const Clocker&) = delete;
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Clocker& operator=(const Clocker&) = delete;
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private:
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glcycle_t & clock;
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};
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class F2DDrawer;
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class FStat
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{
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public:
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FStat (const char *name);
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virtual ~FStat ();
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virtual FString GetStats () = 0;
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void ToggleStat ();
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bool isActive() const
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{
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return m_Active;
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}
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static void PrintStat (F2DDrawer *drawer);
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static FStat *FindStat (const char *name);
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static void ToggleStat (const char *name);
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static void EnableStat(const char* name, bool on);
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static void DumpRegisteredStats ();
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private:
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FStat *m_Next;
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const char *m_Name;
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bool m_Active;
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static FStat *FirstStat;
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};
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#define ADD_STAT(n) \
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static class Stat_##n : public FStat { \
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public: \
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Stat_##n () : FStat (#n) {} \
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FString GetStats (); } Istaticstat##n; \
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FString Stat_##n::GetStats ()
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#endif //__STATS_H__
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