1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "Timer.hpp" 16 17 #if !defined(__i386__) && defined(_M_IX86) 18 #define __i386__ 1 19 #endif 20 21 #if !defined(__x86_64__) && (defined(_M_AMD64) || defined (_M_X64)) 22 #define __x86_64__ 1 23 #endif 24 25 #if defined(_WIN32) 26 #ifndef WIN32_LEAN_AND_MEAN 27 #define WIN32_LEAN_AND_MEAN 28 #endif 29 #include <windows.h> 30 #include <intrin.h> 31 #else 32 #include <sys/time.h> 33 #if defined(__i386__) || defined(__x86_64__) 34 #include <x86intrin.h> 35 #endif 36 #endif 37 38 namespace sw 39 { Timer()40 Timer::Timer() 41 { 42 } 43 ~Timer()44 Timer::~Timer() 45 { 46 } 47 seconds()48 double Timer::seconds() 49 { 50 #if defined(_WIN32) 51 return (double)counter() / (double)frequency(); 52 #else 53 timeval t; 54 gettimeofday(&t, 0); 55 return (double)t.tv_sec + (double)t.tv_usec * 1.0e-6; 56 #endif 57 } 58 ticks()59 int64_t Timer::ticks() 60 { 61 #if defined(_WIN32) 62 #if defined(_M_ARM64) 63 return _ReadStatusReg(ARM64_PMCCNTR_EL0); 64 #else 65 return __rdtsc(); 66 #endif 67 #elif defined(__i386__) || defined(__x86_64__) 68 int64_t tsc; 69 __asm volatile("rdtsc": "=A" (tsc)); 70 return tsc; 71 #else 72 return 0; 73 #endif 74 } 75 counter()76 int64_t Timer::counter() 77 { 78 #if defined(_WIN32) 79 int64_t counter; 80 QueryPerformanceCounter((LARGE_INTEGER*)&counter); 81 return counter; 82 #else 83 timeval t; 84 gettimeofday(&t, 0); 85 return t.tv_sec * 1000000 + t.tv_usec; 86 #endif 87 } 88 frequency()89 int64_t Timer::frequency() 90 { 91 #if defined(_WIN32) 92 int64_t frequency; 93 QueryPerformanceFrequency((LARGE_INTEGER*)&frequency); 94 return frequency; 95 #else 96 return 1000000; // gettimeofday uses microsecond resolution 97 #endif 98 } 99 } 100