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84 lines
2.6 KiB
84 lines
2.6 KiB
/*-------------------------------------------------------------------------
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* drawElements Utility Library
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* ----------------------------
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*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*//*!
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* \file
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* \brief System clock.
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*//*--------------------------------------------------------------------*/
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#include "deClock.h"
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#include <time.h>
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#if (DE_OS == DE_OS_WIN32)
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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#elif (DE_OS == DE_OS_UNIX) || (DE_OS == DE_OS_ANDROID) || (DE_OS == DE_OS_SYMBIAN) || (DE_OS == DE_OS_QNX)
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# include <time.h>
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#elif (DE_OS == DE_OS_OSX) || (DE_OS == DE_OS_IOS)
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# include <sys/time.h>
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#endif
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deUint64 deGetMicroseconds (void)
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{
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#if (DE_OS == DE_OS_WIN32)
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LARGE_INTEGER freq;
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LARGE_INTEGER count;
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QueryPerformanceCounter(&count);
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QueryPerformanceFrequency(&freq);
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DE_ASSERT(freq.LowPart != 0 || freq.HighPart != 0);
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/* \todo [2010-03-26 kalle] consider adding a 32bit-friendly implementation */
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if (count.QuadPart < MAXLONGLONG / 1000000)
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{
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DE_ASSERT(freq.QuadPart != 0);
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return count.QuadPart * 1000000 / freq.QuadPart;
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}
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else
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{
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DE_ASSERT(freq.QuadPart >= 1000000);
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return count.QuadPart / (freq.QuadPart / 1000000);
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}
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#elif (DE_OS == DE_OS_UNIX) || (DE_OS == DE_OS_ANDROID) || (DE_OS == DE_OS_QNX)
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struct timespec currTime;
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clock_gettime(CLOCK_MONOTONIC, &currTime);
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return (deUint64)currTime.tv_sec*1000000 + ((deUint64)currTime.tv_nsec/1000);
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#elif (DE_OS == DE_OS_SYMBIAN)
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struct timespec currTime;
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/* Symbian supports only realtime clock for clock_gettime. */
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/* \todo [2011-08-22 kalle] Proper Symbian-based implementation that is guaranteed to be monotonic. */
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clock_gettime(CLOCK_REALTIME, &currTime);
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return (deUint64)currTime.tv_sec*1000000 + ((deUint64)currTime.tv_nsec/1000);
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#elif (DE_OS == DE_OS_OSX) || (DE_OS == DE_OS_IOS)
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struct timeval currTime;
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gettimeofday(&currTime, DE_NULL);
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return (deUint64)currTime.tv_sec*1000000 + (deUint64)currTime.tv_usec;
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#else
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# error "Not implemented for target OS"
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#endif
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}
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deUint64 deGetTime (void)
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{
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return (deUint64)time(DE_NULL);
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}
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