168 lines
2.6 KiB
C
168 lines
2.6 KiB
C
/*++
|
||
|
||
Copyright (c) 1993 Microsoft Corporation
|
||
|
||
Module Name:
|
||
|
||
vwasync.c
|
||
|
||
Abstract:
|
||
|
||
ntVdm netWare (Vw) IPX/SPX Functions
|
||
|
||
Vw: The peoples' network
|
||
|
||
Contains Asyncrhonous Event Scheduler (thread)
|
||
|
||
Contents:
|
||
VwAesThread
|
||
(CheckPendingIpxRequests)
|
||
|
||
Author:
|
||
|
||
Richard L Firth (rfirth) 30-Sep-1993
|
||
|
||
Environment:
|
||
|
||
User-mode Win32
|
||
|
||
Revision History:
|
||
|
||
30-Sep-1993 rfirth
|
||
Created
|
||
|
||
--*/
|
||
|
||
#include "vw.h"
|
||
#pragma hdrstop
|
||
|
||
//
|
||
// private routine prototypes
|
||
//
|
||
|
||
PRIVATE
|
||
VOID
|
||
CheckPendingIpxRequests(
|
||
VOID
|
||
);
|
||
|
||
//
|
||
// global data
|
||
//
|
||
|
||
WORD AesTickCount;
|
||
|
||
//
|
||
// functions
|
||
//
|
||
|
||
|
||
DWORD
|
||
VwAesThread(
|
||
IN LPVOID Parameters
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Provides the functionality of the Asynchronous Event Scheduler (AES) in the
|
||
Netware world:
|
||
|
||
- updates the tick count
|
||
- completes any matured timer events
|
||
- checks any pending requests and schedules the next action
|
||
|
||
This thread wakes up every PC tick (1/18 second)
|
||
|
||
Arguments:
|
||
|
||
Parameters - unused
|
||
|
||
Return Value:
|
||
|
||
DWORD
|
||
0
|
||
|
||
--*/
|
||
|
||
{
|
||
BOOL fOperationPerformed = FALSE ;
|
||
static int n = 1 ;
|
||
|
||
UNREFERENCED_PARAMETER(Parameters);
|
||
|
||
while (TRUE)
|
||
{
|
||
//
|
||
// we will always yield in this loop to be friendly to others,
|
||
// but occasionally we will forcefully do a non zero sleep for
|
||
// lower priority threads to run.
|
||
//
|
||
if ((n % 100) == 0)
|
||
{
|
||
Sleep(ONE_TICK) ;
|
||
n = 1 ;
|
||
}
|
||
if (!fOperationPerformed && ((n % 4) == 0))
|
||
{
|
||
Sleep(10) ;
|
||
n++ ;
|
||
}
|
||
else
|
||
{
|
||
Sleep(0) ;
|
||
n++ ;
|
||
}
|
||
|
||
++AesTickCount;
|
||
ScanTimerList();
|
||
CheckPendingIpxRequests();
|
||
CheckPendingSpxRequests(&fOperationPerformed);
|
||
}
|
||
|
||
return 0; // compiler-pacifier
|
||
}
|
||
|
||
|
||
PRIVATE
|
||
VOID
|
||
CheckPendingIpxRequests(
|
||
VOID
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Polls the opened, active non-blocking IPX sockets to see if there is anything
|
||
to do (data to receive, availability to send, timeouts)
|
||
|
||
Arguments:
|
||
|
||
None.
|
||
|
||
Return Value:
|
||
|
||
None.
|
||
|
||
--*/
|
||
|
||
{
|
||
LPSOCKET_INFO pActiveSocket = NULL;
|
||
|
||
//
|
||
// search SOCKET_INFO structures for something to do. Could do select()
|
||
// but we have most of the info anyway. We use the BFI filter mechanism
|
||
//
|
||
|
||
while (pActiveSocket = FindActiveSocket(pActiveSocket)) {
|
||
if (pActiveSocket->Flags & SOCKET_FLAG_SENDING) {
|
||
IpxSendNext(pActiveSocket);
|
||
}
|
||
if (pActiveSocket->Flags & SOCKET_FLAG_LISTENING) {
|
||
IpxReceiveNext(pActiveSocket);
|
||
}
|
||
}
|
||
}
|