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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
*
*****************************************************************************/
/* $Id$ */
/**
*
* 04-Feb-2001
* - Added patch by "Vanhanen, Reijo" <Reijo.Vanhanen@helsoft.fi>
* Improves accuracy of msec
*/
/* Include stuff ************************************************************ */
#include "time.h"
#include "unistd.h"
#include "signal.h"
#include <winbase.h>
#include <mmsystem.h>
#include <errno.h>
int getfilesystemtime(struct timeval *time_Info)
{
FILETIME ft;
__int64 ff;
GetSystemTimeAsFileTime(&ft); /* 100 ns blocks since 01-Jan-1641 */
/* resolution seems to be 0.01 sec */
ff = *(__int64*)(&ft);
time_Info->tv_sec = (int)(ff/(__int64)10000000-(__int64)11644473600);
time_Info->tv_usec = (int)(ff % 10000000)/10;
return 0;
}
int gettimeofday(struct timeval *time_Info, struct timezone *timezone_Info)
{
static struct timeval starttime = {0, 0};
static __int64 lasttime = 0;
static __int64 freq = 0;
__int64 timer;
LARGE_INTEGER li;
BOOL b;
double dt;
/* Get the time, if they want it */
if (time_Info != NULL) {
if (starttime.tv_sec == 0) {
b = QueryPerformanceFrequency(&li);
if (!b) {
starttime.tv_sec = -1;
}
else {
freq = li.QuadPart;
b = QueryPerformanceCounter(&li);
if (!b) {
starttime.tv_sec = -1;
}
else {
getfilesystemtime(&starttime);
timer = li.QuadPart;
dt = (double)timer/freq;
starttime.tv_usec -= (int)((dt-(int)dt)*1000000);
if (starttime.tv_usec < 0) {
starttime.tv_usec += 1000000;
--starttime.tv_sec;
}
starttime.tv_sec -= (int)dt;
}
}
}
if (starttime.tv_sec > 0) {
b = QueryPerformanceCounter(&li);
if (!b) {
starttime.tv_sec = -1;
}
else {
timer = li.QuadPart;
if (timer < lasttime) {
getfilesystemtime(time_Info);
dt = (double)timer/freq;
starttime = *time_Info;
starttime.tv_usec -= (int)((dt-(int)dt)*1000000);
if (starttime.tv_usec < 0) {
starttime.tv_usec += 1000000;
--starttime.tv_sec;
}
starttime.tv_sec -= (int)dt;
}
else {
lasttime = timer;
dt = (double)timer/freq;
time_Info->tv_sec = starttime.tv_sec + (int)dt;
time_Info->tv_usec = starttime.tv_usec + (int)((dt-(int)dt)*1000000);
if (time_Info->tv_usec > 1000000) {
time_Info->tv_usec -= 1000000;
++time_Info->tv_sec;
}
}
}
}
if (starttime.tv_sec < 0) {
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;
}
/* this usleep isnt exactly accurate but should do ok */
void usleep(unsigned int useconds)
{
struct timeval tnow, tthen, t0;
gettimeofday(&tthen, NULL);
t0 = tthen;
tthen.tv_usec += useconds;
while (tthen.tv_usec > 1000000) {
tthen.tv_usec -= 1000000;
tthen.tv_sec++;
}
if (useconds > 10000) {
useconds -= 10000;
Sleep(useconds/1000);
}
while (1) {
gettimeofday(&tnow, NULL);
if (tnow.tv_sec > tthen.tv_sec) {
break;
}
if (tnow.tv_sec == tthen.tv_sec) {
if (tnow.tv_usec > tthen.tv_usec) {
break;
}
}
}
}
#ifdef HAVE_SETITIMER
#ifndef THREAD_SAFE
unsigned int proftimer, virttimer, realtimer;
extern LPMSG phpmsg;
#endif
struct timer_msg {
int signal;
unsigned int threadid;
};
LPTIMECALLBACK setitimer_timeout(UINT uTimerID, UINT info, DWORD dwUser, DWORD dw1, DWORD dw2)
{
struct timer_msg *msg = (struct timer_msg *) info;
if (msg) {
raise((int) msg->signal);
PostThreadMessage(msg->threadid,
WM_NOTIFY, msg->signal, 0);
free(msg);
}
return 0;
}
int setitimer(int which, const struct itimerval *value, struct itimerval *ovalue)
{
int timeout = value->it_value.tv_sec * 1000 + value->it_value.tv_usec;
int repeat = TIME_ONESHOT;
/*make sure the message queue is initialized */
PeekMessage(phpmsg, NULL, WM_USER, WM_USER, PM_NOREMOVE);
if (timeout > 0) {
struct timer_msg *msg = malloc(sizeof(struct timer_msg));
msg->threadid = GetCurrentThreadId();
if (!ovalue) {
repeat = TIME_PERIODIC;
}
switch (which) {
case ITIMER_REAL:
msg->signal = SIGALRM;
realtimer = timeSetEvent(timeout, 100, (LPTIMECALLBACK) setitimer_timeout, (UINT) msg, repeat);
break;
case ITIMER_VIRT:
msg->signal = SIGVTALRM;
virttimer = timeSetEvent(timeout, 100, (LPTIMECALLBACK) setitimer_timeout, (UINT) msg, repeat);
break;
case ITIMER_PROF:
msg->signal = SIGPROF;
proftimer = timeSetEvent(timeout, 100, (LPTIMECALLBACK) setitimer_timeout, (UINT) msg, repeat);
break;
default:
errno = EINVAL;
return -1;
break;
}
} else {
switch (which) {
case ITIMER_REAL:
timeKillEvent(realtimer);
break;
case ITIMER_VIRT:
timeKillEvent(virttimer);
break;
case ITIMER_PROF:
timeKillEvent(proftimer);
break;
default:
errno = EINVAL;
return -1;
break;
}
}
return 0;
}
#endif
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