mirror of
https://github.com/glfw/glfw.git
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04522580ad
Files built for Win32 must use C89 style declarations for compatibility
with VS 2010 and 2012, which are still supported by GLFW.
(cherry picked from commit 56aad76b16)
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
//========================================================================
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// GLFW 3.3 POSIX - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Marcus Geelnard
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// Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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// It is fine to use C99 in this file because it will not be built with VS
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//========================================================================
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#include "internal.h"
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#include <sys/time.h>
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#include <time.h>
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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//////////////////////////////////////////////////////////////////////////
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// Initialise timer
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//
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void _glfwInitTimerPOSIX(void)
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{
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#if defined(CLOCK_MONOTONIC)
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struct timespec ts;
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if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
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{
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_glfw.timer.posix.monotonic = GLFW_TRUE;
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_glfw.timer.posix.frequency = 1000000000;
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}
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else
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#endif
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{
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_glfw.timer.posix.monotonic = GLFW_FALSE;
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_glfw.timer.posix.frequency = 1000000;
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}
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW platform API //////
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//////////////////////////////////////////////////////////////////////////
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uint64_t _glfwPlatformGetTimerValue(void)
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{
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#if defined(CLOCK_MONOTONIC)
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if (_glfw.timer.posix.monotonic)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return (uint64_t) ts.tv_sec * (uint64_t) 1000000000 + (uint64_t) ts.tv_nsec;
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}
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else
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#endif
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return (uint64_t) tv.tv_sec * (uint64_t) 1000000 + (uint64_t) tv.tv_usec;
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}
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}
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uint64_t _glfwPlatformGetTimerFrequency(void)
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{
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return _glfw.timer.posix.frequency;
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}
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