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 { 40 Timer::Timer() 41 { 42 } 43 44 Timer::~Timer() 45 { 46 } 47 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 59 int64_t Timer::ticks() 60 { 61 #if defined(_WIN32) 62 return __rdtsc(); 63 #elif defined(__i386__) || defined(__x86_64__) 64 int64_t tsc; 65 __asm volatile("rdtsc": "=A" (tsc)); 66 return tsc; 67 #else 68 return 0; 69 #endif 70 } 71 72 int64_t Timer::counter() 73 { 74 #if defined(_WIN32) 75 int64_t counter; 76 QueryPerformanceCounter((LARGE_INTEGER*)&counter); 77 return counter; 78 #else 79 timeval t; 80 gettimeofday(&t, 0); 81 return t.tv_sec * 1000000 + t.tv_usec; 82 #endif 83 } 84 85 int64_t Timer::frequency() 86 { 87 #if defined(_WIN32) 88 int64_t frequency; 89 QueryPerformanceFrequency((LARGE_INTEGER*)&frequency); 90 return frequency; 91 #else 92 return 1000000; // gettimeofday uses microsecond resolution 93 #endif 94 } 95 } 96
