C++ GetCurrentTime函数代码示例

void Monster::JudegeAttack()
{
	srand((UINT)GetCurrentTime());
	int x = rand()%100;
	if(x>98)
	{
	this->AttackAnimation("monster_attack",5,MonsterDirecton);
	}

}

/*
 * Function: RunEnqueueDequeueTrial
 * --------------------------------
 * Runs the enqueue & dequeue time trials for the specified
 * pqueue size.  Reports results to cout.
 * Note that we just randomly choose numbers to insert.
 * The amount of time it takes to do one enqueue/dequeue is
 * too small to be accurately measured, so we do many iterations in 
 * a loop and time that.
 */
void RunEnqueueDequeueTrial(int size)
{
	PQueue pq;
	
	for (int i = 0; i < size; i++)
		pq.enqueue(RandomInteger(1,size));
	
    cout << "Time to enqueue into " << size << "-element pqueue: " << flush;
    double start = GetCurrentTime();
    for (int j = 0; j < NumRepetitions; j++) 
	    pq.enqueue(RandomInteger(1, 2*size));
    cout << 1000*(GetCurrentTime() - start)/NumRepetitions << " usecs" << endl;

    cout << "Time to dequeue from " << size << "-element pqueue: " << flush;
    start = GetCurrentTime();
    for (int k = 0; k < NumRepetitions; k++) 
	    pq.dequeueMax();
    cout << 1000*(GetCurrentTime() - start)/NumRepetitions << " usecs" << endl;
}

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static int iKeep [NUM][4] ;
     HDC        hdcScr, hdcMem ;
     int        cx, cy ;
     HBITMAP    hBitmap ;
     HWND       hwnd ;
     int        i, j, x1, y1, x2, y2 ;

     if (LockWindowUpdate (hwnd = GetDesktopWindow ()))
     {
          hdcScr  = GetDCEx (hwnd, NULL, DCX_CACHE | DCX_LOCKWINDOWUPDATE) ;
          hdcMem  = CreateCompatibleDC (hdcScr) ;
          cx      = GetSystemMetrics (SM_CXSCREEN) / 10 ;
          cy      = GetSystemMetrics (SM_CYSCREEN) / 10 ;
          hBitmap = CreateCompatibleBitmap (hdcScr, cx, cy) ;

          SelectObject (hdcMem, hBitmap) ;

          srand ((int) GetCurrentTime ()) ;

          for (i = 0 ; i < 2   ; i++)
          for (j = 0 ; j < NUM ; j++)
          {
               if (i == 0)
               {
                    iKeep [j] [0] = x1 = cx * (rand () % 10) ;
                    iKeep [j] [1] = y1 = cy * (rand () % 10) ;

                    iKeep [j] [2] = x2 = cx * (rand () % 10) ;
                    iKeep [j] [3] = y2 = cy * (rand () % 10) ;
               }
               else
               {
                    x1 = iKeep [NUM - 1 - j] [0] ;
                    y1 = iKeep [NUM - 1 - j] [1] ;
                    x2 = iKeep [NUM - 1 - j] [2] ;
                    y2 = iKeep [NUM - 1 - j] [3] ;
               }
               BitBlt (hdcMem,  0,  0, cx, cy, hdcScr, x1, y1, SRCCOPY) ;
               BitBlt (hdcScr, x1, y1, cx, cy, hdcScr, x2, y2, SRCCOPY) ;
               BitBlt (hdcScr, x2, y2, cx, cy, hdcMem,  0,  0, SRCCOPY) ;

               Sleep (10) ;
          }

          DeleteDC (hdcMem) ;
          ReleaseDC (hwnd, hdcScr) ;
          DeleteObject (hBitmap) ;

          LockWindowUpdate (NULL) ;
     }
     return FALSE ;
}

/*======================================================================*
kernel_main
*======================================================================*/
PUBLIC int kernel_main()
{
	Init8259A();
	Init8253();
	SetIRQ();
	
	k_reenter = -1;
	ticks = 0;
	get_boot_params(&BootParam);
	GetCurrentTime(&systime);			//?áè?RTCê±??

	int i, j, eflags, prio;
        u8  rpl;
        u8  priv; 

	TASK * t;
	PROCESS * p = proc_table;

	char * stk = task_stack + STACK_SIZE_TOTAL + 0x4000;

	for (i = 0; i < NR_TASKS + NR_PROCS; i++,p++,t++) {
		if (i >= NR_TASKS + NR_NATIVE_PROCS) 
		{
			p->p_flags = FREE_SLOT;
			p->ldt_sel = SELECTOR_LDT_FIRST + (i << 3);		//空槽也要给LDT赋值否则调度任务会#GP异常
			continue;
		}

	        if (i < NR_TASKS) {     
                        t	= task_table + i;
                        priv	= PRIVILEGE_TASK;
                        rpl     = RPL_TASK;
                        eflags  = 0x1202;
			prio    = 1;
                }
                else {                  
                        t	= user_proc_table + (i - NR_TASKS);
                        priv	= PRIVILEGE_USER;
                        rpl     = RPL_USER;
                        eflags  = 0x202;	
			prio    = 1;
                }

		strcpy(p->name, t->name);	
		p->p_parent = NO_TASK;

		if (strcmp(t->name, "INIT") != 0) {
			p->ldts[INDEX_LDT_C]  = gdt[SELECTOR_KERNEL_CS >> 3];
			p->ldts[INDEX_LDT_RW] = gdt[SELECTOR_KERNEL_DS >> 3];

			
			p->ldts[INDEX_LDT_C].attr1  = DA_C   | priv << 5;
			p->ldts[INDEX_LDT_RW].attr1 = DA_DRW | priv << 5;
		}
		else {		

// https://w3c.github.io/web-animations/#finish-an-animation
void
Animation::Finish(ErrorResult& aRv)
{
  if (mPlaybackRate == 0 ||
      (mPlaybackRate > 0 && EffectEnd() == TimeDuration::Forever())) {
    aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
    return;
  }

  AutoMutationBatchForAnimation mb(*this);

  // Seek to the end
  TimeDuration limit =
    mPlaybackRate > 0 ? TimeDuration(EffectEnd()) : TimeDuration(0);
  bool didChange = GetCurrentTime() != Nullable<TimeDuration>(limit);
  SilentlySetCurrentTime(limit);

  // If we are paused or play-pending we need to fill in the start time in
  // order to transition to the finished state.
  //
  // We only do this, however, if we have an active timeline. If we have an
  // inactive timeline we can't transition into the finished state just like
  // we can't transition to the running state (this finished state is really
  // a substate of the running state).
  if (mStartTime.IsNull() &&
      mTimeline &&
      !mTimeline->GetCurrentTime().IsNull()) {
    mStartTime.SetValue(mTimeline->GetCurrentTime().Value() -
                        limit.MultDouble(1.0 / mPlaybackRate));
    didChange = true;
  }

  // If we just resolved the start time for a pause or play-pending
  // animation, we need to clear the task. We don't do this as a branch of
  // the above however since we can have a play-pending animation with a
  // resolved start time if we aborted a pause operation.
  if (!mStartTime.IsNull() &&
      (mPendingState == PendingState::PlayPending ||
       mPendingState == PendingState::PausePending)) {
    if (mPendingState == PendingState::PausePending) {
      mHoldTime.SetNull();
    }
    CancelPendingTasks();
    didChange = true;
    if (mReady) {
      mReady->MaybeResolve(this);
    }
  }
  UpdateTiming(SeekFlag::DidSeek, SyncNotifyFlag::Sync);
  if (didChange && IsRelevant()) {
    nsNodeUtils::AnimationChanged(this);
  }
  PostUpdate();
}

void
Animation::SilentlySetPlaybackRate(double aPlaybackRate)
{
  Nullable<TimeDuration> previousTime = GetCurrentTime();
  mPlaybackRate = aPlaybackRate;
  if (!previousTime.IsNull()) {
    ErrorResult rv;
    SilentlySetCurrentTime(previousTime.Value());
    MOZ_ASSERT(!rv.Failed(), "Should not assert for non-null time");
  }
}

void
AnimationPlayer::SetSource(Animation* aSource)
{
  if (mSource) {
    mSource->SetParentTime(Nullable<TimeDuration>());
  }
  mSource = aSource;
  if (mSource) {
    mSource->SetParentTime(GetCurrentTime());
  }
}

   void 
   Logger::LogEvent(const String &sMessage)
   {
      long lThread = _GetThreadID();
      String sTime = GetCurrentTime();

      String sData;
      sData.Format(_T("%d\t\"%s\"\t\"%s\"\r\n"), lThread, sTime, sMessage);

      _WriteData(sData, Events);
   }

void
Clock::Pause ()
{
 	//printf ("clock %p (%s) paused\n", this, GetName ());

	if (is_paused)
		return;

	is_paused = true;
	begin_pause_time = GetCurrentTime();
}

/**
 * Performs a robust accept, restarting when interrupted.
 * Requires a valid socket (se->fd >= 0).
 */
extern int
SH_RobustAccept(SockEntry se) {
	int timeout = se->base->robustTimeout;
	uint64_t start = GetCurrentTime();
	for (;;) {
		int connRes = accept(se->fd, NULL, NULL);
		if (connRes >= 0) {
			se->lastUsed = GetCurrentTime();
			return connRes;
		}
		int e = errno;
		if (e != EAGAIN && e != EINTR) break;
		MilliSleep(RobustMillis);
		uint64_t now = GetCurrentTime();
		double dt = DeltaTime(start, now);
		if (dt > timeout) break;
	}
	se->errCount++;
	return -1;
}

// ProcessEvents
// called by the Process at interrupt time to see if there are
// any events that have timed out
//
void STREAM::ProcessEvents(void)
{
   if (qhEvent.IsElements()) {
      PEVENT pnextevent = (PEVENT)qhEvent.Head();
      ULONG time = GetCurrentTime();
      ULONG eventtime = pnextevent->GetEventTime();
      if (eventtime <= time)
         pnextevent->Report(time);
   }

}

/**
 * Performs a robust connect, restarting when interrupted.
 * Requires a valid socket (se->fd >= 0).
 */
extern int
SH_RobustConnect(SockEntry se, struct sockaddr *sap) {
	int timeout = se->base->robustTimeout;
	uint64_t start = GetCurrentTime();
	for (;;) {
		int connRes = connect(se->fd, sap, SockAddrLen(sap));
		if (connRes >= 0) {
			se->lastUsed = GetCurrentTime();
			return connRes;
		}
		int e = errno;
		if (e != EAGAIN && e != EINTR) break;
		MilliSleep(RobustMillis);
		uint64_t now = GetCurrentTime();
		double dt = DeltaTime(start, now);
		if (dt > timeout) break;
	}
	se->errCount++;
	return -1;
}

/******************************************************************************
  *     GetDeviceState : returns the "state" of the mouse.
  *
  *   For the moment, only the "standard" return structure (DIMOUSESTATE) is
  *   supported.
  */
static HRESULT WINAPI SysMouseAImpl_GetDeviceState(
	LPDIRECTINPUTDEVICE8A iface,DWORD len,LPVOID ptr
) {
    SysMouseImpl *This = (SysMouseImpl *)iface;

    if(This->acquired == 0) return DIERR_NOTACQUIRED;

    EnterCriticalSection(&(This->crit));
    TRACE("(this=%p,0x%08lx,%p):\n", This, len, ptr);
    TRACE("(X: %ld - Y: %ld - Z: %ld  L: %02x M: %02x R: %02x)\n",
	  This->m_state.lX, This->m_state.lY, This->m_state.lZ,
	  This->m_state.rgbButtons[0], This->m_state.rgbButtons[2], This->m_state.rgbButtons[1]);
    
    /* Copy the current mouse state */
    fill_DataFormat(ptr, &(This->m_state), This->wine_df);
    
    /* Initialize the buffer when in relative mode */
    if (This->absolute == 0) {
	This->m_state.lX = 0;
	This->m_state.lY = 0;
	This->m_state.lZ = 0;
    }
    
    /* Check if we need to do a mouse warping */
    if (This->need_warp == WARP_NEEDED && (GetCurrentTime() - This->last_warped > 10)) {
	dinput_window_check(This);
	TRACE("Warping mouse to %ld - %ld\n", This->mapped_center.x, This->mapped_center.y);
	SetCursorPos( This->mapped_center.x, This->mapped_center.y );
        This->last_warped = GetCurrentTime();

#ifdef MOUSE_HACK
	This->need_warp = WARP_DONE;
#else
	This->need_warp = WARP_STARTED;
#endif
    }
    
    LeaveCriticalSection(&(This->crit));
    
    return DI_OK;
}

//------------------------------------------------------------------------------
// Purpose : Update weapon
//------------------------------------------------------------------------------
void CWeaponSDKMelee::ItemPostFrame( void )
{
	CSDKPlayer *pPlayer = GetPlayerOwner();
	if ( pPlayer == NULL )
		return;

	if (IsThrowingGrenade())
	{
		if (MaintainGrenadeToss())
			return;
	}
	else if ((pPlayer->m_nButtons & IN_ALT2) && !IsThrowingGrenade() && pPlayer->GetAmmoCount(GetAmmoDef()->Index("grenades")) && pPlayer->CanAttack())
	{
		bool bAllow = (m_flNextPrimaryAttack < GetCurrentTime());
		if (m_bInReload)
			bAllow = true;

		if (bAllow)
		{
			StartGrenadeToss();
			return;
		}
	}

	if (GetSwingTime() > 0 && GetSwingTime() <= GetCurrentTime())
	{
		Swing();
	}
	else if ( (pPlayer->m_nButtons & IN_ATTACK) && (m_flNextPrimaryAttack <= GetCurrentTime()) && pPlayer->CanAttack() )
	{
		PrimaryAttack();
	} 
	else if ( (pPlayer->m_nButtons & IN_ATTACK2) && (m_flNextSecondaryAttack <= GetCurrentTime()) && pPlayer->CanAttack() )
	{
		SecondaryAttack();
	}
	else 
	{
		WeaponIdle();
	}
}

static SockEntry
SH_NewSockEntryNoCheck(SockBase base, int sockFD) {
	SockEntry ret = ProxyUtil_StructAlloc(1, SockEntryStruct);
	ret->base = base;
	ret->next = base->list;
	ret->fd = sockFD;
	ret->startTime = GetCurrentTime();
	ret->lastUsed = ret->startTime;
	base->list = ret;
	base->nSocks++;
	return ret;
}