| /************************************************************************** |
| * |
| * Copyright 2014, 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * Ported from drawElements Utility Library (Google, Inc.) |
| * Port done by: Ian Elliott <ianelliott@google.com> |
| **************************************************************************/ |
| |
| #include <time.h> |
| #include <assert.h> |
| #include <vulkan/vk_platform.h> |
| |
| #if defined(_WIN32) |
| |
| #include <windows.h> |
| |
| #elif defined(__unix__) || defined(__linux) || defined(__linux__) || defined(__ANDROID__) || defined(__EPOC32__) || defined(__QNX__) |
| |
| #include <time.h> |
| |
| #elif defined(__APPLE__) |
| |
| #include <sys/time.h> |
| |
| #endif |
| |
| uint64_t getTimeInNanoseconds(void) { |
| #if defined(_WIN32) |
| LARGE_INTEGER freq; |
| LARGE_INTEGER count; |
| QueryPerformanceCounter(&count); |
| QueryPerformanceFrequency(&freq); |
| assert(freq.LowPart != 0 || freq.HighPart != 0); |
| |
| if (count.QuadPart < MAXLONGLONG / 1000000) { |
| assert(freq.QuadPart != 0); |
| return count.QuadPart * 1000000 / freq.QuadPart; |
| } else { |
| assert(freq.QuadPart >= 1000000); |
| return count.QuadPart / (freq.QuadPart / 1000000); |
| } |
| |
| #elif defined(__unix__) || defined(__linux) || defined(__linux__) || defined(__ANDROID__) || defined(__QNX__) |
| struct timespec currTime; |
| clock_gettime(CLOCK_MONOTONIC, &currTime); |
| return (uint64_t)currTime.tv_sec * 1000000 + ((uint64_t)currTime.tv_nsec / 1000); |
| |
| #elif defined(__EPOC32__) |
| struct timespec currTime; |
| /* Symbian supports only realtime clock for clock_gettime. */ |
| clock_gettime(CLOCK_REALTIME, &currTime); |
| return (uint64_t)currTime.tv_sec * 1000000 + ((uint64_t)currTime.tv_nsec / 1000); |
| |
| #elif defined(__APPLE__) |
| struct timeval currTime; |
| gettimeofday(&currTime, NULL); |
| return (uint64_t)currTime.tv_sec * 1000000 + (uint64_t)currTime.tv_usec; |
| |
| #else |
| #error "Not implemented for target OS" |
| #endif |
| } |