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66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
// SPDX-License-Identifier: Apache-2.0
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// SPDX-FileCopyrightText: 2002-2006 Marcus Geelnard
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// SPDX-FileCopyrightText: 2006-2017 Camilla Löwy <elmindreda@glfw.org>
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// SPDX-FileCopyrightText: 2023 The Ebitengine Authors
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//go:build freebsd || linux || netbsd || openbsd
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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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