/******************************************************************************/
/*																										*/
/*	Name		:	ISched.cpp																		*/
/* Date     :  4/24/1997                                                      */
/* Author   :  Jim Susoy                                                      */
/* Notice   :  (C) 1997 Qualcomm, Inc. - All Rights Reserved                  */
/* Copyright (c) 2016, Computer History Museum 
All rights reserved. 
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 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 
 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 
   disclaimer in the documentation and/or other materials provided with the distribution. 
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/*	Desc.		:	IShedule methods																*/
/*																										*/
/******************************************************************************/
#pragma warning(disable : 4514)
#include <afx.h>
#include <ole2.h>
#include "DebugNewHelpers.h"
#include "factory.h"
#include "dllmain.h"


/* Global Data																						*/
extern class CApp gApp;
extern long g_cComponents;

/* Static */
IUnknown * ISched::CreateInstance()
{
	ISched	*pSched = NULL;
	
	if(FALSE == gApp.IsInitialized())
		if(FALSE == gApp.Initialize(CFactory::s_hModule))
			return NULL;
		
	if(NULL == (pSched = DEBUG_NEW_NOTHROW ISched))
		return NULL;
	
	return static_cast<IUnknown *>(pSched);
}

/******************************************************************************/
/* IUnknown methods																				*/
/******************************************************************************/
STDMETHODIMP ISched::QueryInterface(REFIID riid, void **ppv)
{
	if (TRUE == IsEqualIID(riid,IID_IUnknown)) {
		*ppv = static_cast<IUnknown *>(this);
	}
	else if(TRUE == IsEqualIID(riid,IID_ISchedule)) {
		*ppv = static_cast<LPISCHEDULE>(this);
	}
	else {
      *ppv = 0;
		return E_NOINTERFACE;
	}
	
	reinterpret_cast<IUnknown*>(*ppv)->AddRef();
	return(ResultFromScode(S_OK));
}

STDMETHODIMP_(ULONG) ISched::AddRef(void)
{
	return InterlockedIncrement(&m_nRefs);	
}

STDMETHODIMP_(ULONG) ISched::Release(void)
{
	if (0 == InterlockedDecrement(&m_nRefs)) {
		delete this;
		return 0;
	}
	return m_nRefs;
}

/******************************************************************************/
/* ISchedule methods			  																	*/
/******************************************************************************/

ISched::ISched(void) : m_nRefs(1)
{
	InterlockedIncrement(&g_cComponents);
}

ISched::~ISched(void)
{
	Cancel();
	InterlockedDecrement(&g_cComponents);
}

BOOL ISched::Schedule(CONTINUATION pCB, LPVOID pCtx, DWORD dwDelay, ISCHED_PROPS /* ipWhen */)
{
	if(!pCB)
		return(FALSE);
	
	gApp.ScheduleLater(this,pCB,pCtx,dwDelay);
	
	return(TRUE);
}

DWORD ISched::Count(void)
{
	return(gApp.ScheduleCount(this));
}

void ISched::Cancel(void)
{
	gApp.CancelIScheduleEvents(this);	
}
