| //======================================================================== |
| // GLFW 3.3 POSIX - www.glfw.org |
| //------------------------------------------------------------------------ |
| // Copyright (c) 2002-2006 Marcus Geelnard |
| // Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org> |
| // |
| // This software is provided 'as-is', without any express or implied |
| // warranty. In no event will the authors be held liable for any damages |
| // arising from the use of this software. |
| // |
| // Permission is granted to anyone to use this software for any purpose, |
| // including commercial applications, and to alter it and redistribute it |
| // freely, subject to the following restrictions: |
| // |
| // 1. The origin of this software must not be misrepresented; you must not |
| // claim that you wrote the original software. If you use this software |
| // in a product, an acknowledgment in the product documentation would |
| // be appreciated but is not required. |
| // |
| // 2. Altered source versions must be plainly marked as such, and must not |
| // be misrepresented as being the original software. |
| // |
| // 3. This notice may not be removed or altered from any source |
| // distribution. |
| // |
| //======================================================================== |
| // It is fine to use C99 in this file because it will not be built with VS |
| //======================================================================== |
| |
| #include "internal.h" |
| |
| #include <sys/time.h> |
| #include <time.h> |
| |
| |
| ////////////////////////////////////////////////////////////////////////// |
| ////// GLFW internal API ////// |
| ////////////////////////////////////////////////////////////////////////// |
| |
| // Initialise timer |
| // |
| void _glfwInitTimerPOSIX(void) |
| { |
| #if defined(CLOCK_MONOTONIC) |
| struct timespec ts; |
| |
| if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) |
| { |
| _glfw.timer.posix.monotonic = GLFW_TRUE; |
| _glfw.timer.posix.frequency = 1000000000; |
| } |
| else |
| #endif |
| { |
| _glfw.timer.posix.monotonic = GLFW_FALSE; |
| _glfw.timer.posix.frequency = 1000000; |
| } |
| } |
| |
| |
| ////////////////////////////////////////////////////////////////////////// |
| ////// GLFW platform API ////// |
| ////////////////////////////////////////////////////////////////////////// |
| |
| uint64_t _glfwPlatformGetTimerValue(void) |
| { |
| #if defined(CLOCK_MONOTONIC) |
| if (_glfw.timer.posix.monotonic) |
| { |
| struct timespec ts; |
| clock_gettime(CLOCK_MONOTONIC, &ts); |
| return (uint64_t) ts.tv_sec * (uint64_t) 1000000000 + (uint64_t) ts.tv_nsec; |
| } |
| else |
| #endif |
| { |
| struct timeval tv; |
| gettimeofday(&tv, NULL); |
| return (uint64_t) tv.tv_sec * (uint64_t) 1000000 + (uint64_t) tv.tv_usec; |
| } |
| } |
| |
| uint64_t _glfwPlatformGetTimerFrequency(void) |
| { |
| return _glfw.timer.posix.frequency; |
| } |
| |