clock.c

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/*
 * COPYRIGHT:   LGPL, See LGPL.txt in the top level directory
 * PROJECT:     ReactOS CRT library
 * FILE:        lib/sdk/crt/time/clock.c
 * PURPOSE:     Implementation of clock()
 * PROGRAMER:   Timo Kreuzer
 */
#include <precomp.h>
 
ULARGE_INTEGER g_StartupTime;
 
void
initclock(void)
{
    GetSystemTimeAsFileTime((FILETIME*)&g_StartupTime);
}
 
/******************************************************************************
 * \name clock
 * \brief Returns the current process's elapsed time.
 */
clock_t
clock(void)
{
    ULARGE_INTEGER Time;
 
    GetSystemTimeAsFileTime((FILETIME*)&Time);
    Time.QuadPart -= g_StartupTime.QuadPart;
    return (clock_t)FileTimeToUnixTime((FILETIME*)&Time, NULL);
};