time.c

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/*****************************************************************************
 *                                                                           *
 * DH_TIME.C                                                                 *
 *                                                                           *
 * Freely redistributable and modifiable.  Use at your own risk.             *
 *                                                                           *
 * Copyright 1994 The Downhill Project                                       *
 *
 * Modified by Shane Caraveo for use with PHP
 *
 *****************************************************************************/
 
/* Include stuff ************************************************************ */
 
#include <config.w32.h>
 
#include "time.h"
#include "unistd.h"
#include "signal.h"
#include <windows.h>
#include <winbase.h>
#include <mmsystem.h>
#include <errno.h>
#include "php_win32_globals.h"
 
static zend_always_inline void getfilesystemtime(struct timeval *tv)
{/*{{{*/
    FILETIME ft;
    unsigned __int64 ff = 0;
    ULARGE_INTEGER fft;
 
    GetSystemTimePreciseAsFileTime(&ft);
 
    /*
     * Do not cast a pointer to a FILETIME structure to either a
     * ULARGE_INTEGER* or __int64* value because it can cause alignment faults on 64-bit Windows.
     * via  http://technet.microsoft.com/en-us/library/ms724284(v=vs.85).aspx
     */
    fft.HighPart = ft.dwHighDateTime;
    fft.LowPart = ft.dwLowDateTime;
    ff = fft.QuadPart;
 
    ff /= 10Ui64; /* convert to microseconds */
    ff -= 11644473600000000Ui64; /* convert to unix epoch */
 
    tv->tv_sec = (long)(ff / 1000000Ui64);
    tv->tv_usec = (long)(ff % 1000000Ui64);
}/*}}}*/
 
PHPAPI int gettimeofday(struct timeval *time_Info, struct timezone *timezone_Info)
{/*{{{*/
    /* Get the time, if they want it */
    if (time_Info != NULL) {
        getfilesystemtime(time_Info);
    }
    /* Get the timezone, if they want it */
    if (timezone_Info != NULL) {
        _tzset();
        timezone_Info->tz_minuteswest = _timezone;
        timezone_Info->tz_dsttime = _daylight;
    }
    /* And return */
    return 0;
}/*}}}*/
 
PHPAPI int usleep(unsigned int useconds)
{/*{{{*/
    HANDLE timer;
    LARGE_INTEGER due;
 
    due.QuadPart = -(10 * (__int64)useconds);
 
    timer = CreateWaitableTimer(NULL, TRUE, NULL);
    SetWaitableTimer(timer, &due, 0, NULL, NULL, 0);
    WaitForSingleObject(timer, INFINITE);
    CloseHandle(timer);
    return 0;
}/*}}}*/
 
PHPAPI int nanosleep( const struct timespec * rqtp, struct timespec * rmtp )
{/*{{{*/
    if (rqtp->tv_nsec > 999999999) {
        /* The time interval specified 1,000,000 or more microseconds. */
        errno = EINVAL;
        return -1;
    }
    return usleep( rqtp->tv_sec * 1000000 + rqtp->tv_nsec / 1000  );
}/*}}}*/