You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
396 lines
11 KiB
396 lines
11 KiB
/*++
|
|
|
|
Copyright (c) 1991-92 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
winproc.c
|
|
|
|
Abstract:
|
|
|
|
Spooler window processing code
|
|
|
|
Author:
|
|
|
|
Muhunthan Sivapragasam (MuhuntS) 5-Nov-96 port of win95 code
|
|
|
|
Environment:
|
|
|
|
User Mode - Win32
|
|
|
|
Notes:
|
|
|
|
Revision History:
|
|
|
|
BabakJ: Jan 1999, Added thread sync code to allow only one thread doing enumeration, and only
|
|
one thread waiting. This helps performance specially when Dynamon has many Hydra ports.
|
|
|
|
--*/
|
|
|
|
#include "precomp.h"
|
|
#include "local.h"
|
|
#pragma hdrstop
|
|
|
|
#include <cfgmgr32.h>
|
|
|
|
static const GUID USB_PRINTER_GUID =
|
|
{ 0x28d78fad, 0x5a12, 0x11d1,
|
|
{ 0xae, 0x5b, 0x0, 0x0, 0xf8, 0x3, 0xa8, 0xc2 } };
|
|
static const GUID GUID_DEVCLASS_INFRARED =
|
|
{ 0x6bdd1fc5L, 0x810f, 0x11d0,
|
|
{ 0xbe, 0xc7, 0x08, 0x00, 0x2b, 0xe2, 0x09, 0x2f } };
|
|
|
|
typedef struct _DEVICE_REGISTER_INFO {
|
|
|
|
struct _DEVICE_REGISTER_INFO *pNext;
|
|
HANDLE hDevice;
|
|
LPVOID pData;
|
|
PFN_QUERYREMOVE_CALLBACK pfnQueryRemove;
|
|
HDEVNOTIFY hNotify;
|
|
|
|
} DEVICE_REGISTER_INFO, *PDEVICE_REGISTER_INFO;
|
|
|
|
PDEVICE_REGISTER_INFO gpDevRegnInfo = NULL;
|
|
|
|
HDEVNOTIFY ghPNPNotify_USB = NULL;
|
|
HDEVNOTIFY ghPNPNotify_IR = NULL;
|
|
|
|
VOID
|
|
ConfigChangeThread(
|
|
)
|
|
{
|
|
HINSTANCE hLib;
|
|
VOID (*pfnSplConfigChange)();
|
|
|
|
WaitForSpoolerInitialization();
|
|
|
|
if ( hLib = LoadLibrary(L"localspl.dll") ) {
|
|
|
|
if ( pfnSplConfigChange = GetProcAddress(hLib, "SplConfigChange") ) {
|
|
|
|
pfnSplConfigChange();
|
|
}
|
|
|
|
FreeLibrary(hLib);
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
ReenumeratePortsThreadWorker(
|
|
)
|
|
{
|
|
HINSTANCE hLib;
|
|
VOID (*pfnSplReenumeratePorts)();
|
|
|
|
WaitForSpoolerInitialization();
|
|
|
|
if ( hLib = LoadLibrary(L"localspl.dll") ) {
|
|
|
|
if ( pfnSplReenumeratePorts = GetProcAddress(hLib, "SplReenumeratePorts") ) {
|
|
|
|
pfnSplReenumeratePorts();
|
|
}
|
|
|
|
FreeLibrary(hLib);
|
|
}
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
/////
|
|
///// To improve performance, and prevent too many unnecessary port enumerations, specially for Hydra/Dynamon:
|
|
/////
|
|
///// - We want to allow only one Device Arrival thread to be doing port enumeration.
|
|
///// - If above is happneing, we allow only one more Device Arrival thread be waiting to go in.
|
|
///// - All other threads will be turned away, as there is no need for them to do port enumeration.
|
|
/////
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
CRITICAL_SECTION DeviceArrivalCS; // Used to synchronize threads bringing device arrival messages.
|
|
HANDLE ThdOutEvent; // Signalled after a thread is done doing the EnumPort work; not signaled when created.
|
|
|
|
|
|
VOID
|
|
ReenumeratePortsThread(
|
|
)
|
|
{
|
|
static BOOL fThdIn; // TRUE if a thread is doing enum work at the moment
|
|
static BOOL fThdWaiting; // TRUE if a 2nd thread is waiting behind the thread that is inside.
|
|
|
|
EnterCriticalSection( &DeviceArrivalCS ); // Enter the crit section initialized for this at localspl init code
|
|
if( fThdWaiting ) {
|
|
LeaveCriticalSection( &DeviceArrivalCS );
|
|
return; // A 2nd thread is already waiting to go in. No need for holding more threads.
|
|
}
|
|
else {
|
|
|
|
if( fThdIn ) {
|
|
|
|
fThdWaiting = TRUE; // There is a thread inside doing Enum work. Have the current thread wait for it to finish.
|
|
|
|
LeaveCriticalSection( &DeviceArrivalCS );
|
|
WaitForSingleObject( ThdOutEvent, INFINITE );
|
|
EnterCriticalSection( &DeviceArrivalCS );
|
|
|
|
fThdWaiting = FALSE;
|
|
}
|
|
|
|
fThdIn = TRUE; // The current thread is now going in to do Enum work.
|
|
|
|
LeaveCriticalSection( &DeviceArrivalCS );
|
|
ReenumeratePortsThreadWorker();
|
|
EnterCriticalSection( &DeviceArrivalCS );
|
|
|
|
fThdIn = FALSE;
|
|
|
|
if( fThdWaiting )
|
|
SetEvent( ThdOutEvent );
|
|
|
|
LeaveCriticalSection( &DeviceArrivalCS );
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
DWORD
|
|
QueryRemove(
|
|
HANDLE hDevice
|
|
)
|
|
{
|
|
LPVOID pData = NULL;
|
|
PFN_QUERYREMOVE_CALLBACK pfnQueryRemove = NULL;
|
|
PDEVICE_REGISTER_INFO pDevRegnInfo;
|
|
|
|
EnterRouterSem();
|
|
for ( pDevRegnInfo = gpDevRegnInfo ;
|
|
pDevRegnInfo ;
|
|
pDevRegnInfo = pDevRegnInfo->pNext ) {
|
|
|
|
if ( pDevRegnInfo->hDevice == hDevice ) {
|
|
|
|
pfnQueryRemove = pDevRegnInfo->pfnQueryRemove;
|
|
pData = pDevRegnInfo->pData;
|
|
break;
|
|
}
|
|
}
|
|
LeaveRouterSem();
|
|
|
|
return pfnQueryRemove ? pfnQueryRemove(pData) : NO_ERROR;
|
|
}
|
|
|
|
|
|
DWORD
|
|
SplProcessPnPEvent(
|
|
DWORD dwEventType,
|
|
LPVOID lpEventData,
|
|
PVOID pVoid
|
|
)
|
|
{
|
|
HANDLE hThread;
|
|
DWORD dwThread, dwReturn = NO_ERROR;
|
|
PDEV_BROADCAST_HANDLE pBroadcast;
|
|
|
|
DBGMSG(DBG_INFO,
|
|
("SplProcessPnPEvent: dwEventType: %d\n", dwEventType));
|
|
|
|
switch (dwEventType) {
|
|
|
|
case DBT_CONFIGCHANGED:
|
|
hThread = CreateThread(NULL,
|
|
0,
|
|
(LPTHREAD_START_ROUTINE)ConfigChangeThread,
|
|
NULL,
|
|
0,
|
|
&dwThread);
|
|
|
|
if ( hThread )
|
|
CloseHandle(hThread);
|
|
|
|
break;
|
|
|
|
case DBT_DEVICEARRIVAL:
|
|
case DBT_DEVICEREMOVECOMPLETE:
|
|
//
|
|
// In case of device arrival we need to see if there are new ports
|
|
// and in case of device removal monitors might want to mark ports
|
|
// as removed so next reboot they do not have to enumerate them
|
|
// ex. USB does this.
|
|
//
|
|
// We use the default process stack size for this thread. Currently 16KB.
|
|
//
|
|
hThread = CreateThread(NULL,
|
|
0,
|
|
(LPTHREAD_START_ROUTINE)ReenumeratePortsThread,
|
|
NULL,
|
|
0,
|
|
&dwThread);
|
|
|
|
if ( hThread )
|
|
CloseHandle(hThread);
|
|
|
|
break;
|
|
|
|
case DBT_DEVICEQUERYREMOVE:
|
|
pBroadcast = (PDEV_BROADCAST_HANDLE)lpEventData;
|
|
|
|
//
|
|
// These checks are to see if we really care about this
|
|
//
|
|
if ( !pBroadcast ||
|
|
pBroadcast->dbch_devicetype != DBT_DEVTYP_HANDLE )
|
|
break;
|
|
|
|
dwReturn = QueryRemove(pBroadcast->dbch_handle);
|
|
break;
|
|
|
|
case DBT_SHELLLOGGEDON:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return dwReturn;
|
|
}
|
|
|
|
|
|
VOID
|
|
RegisterForPnPEvents(
|
|
VOID
|
|
)
|
|
{
|
|
DEV_BROADCAST_DEVICEINTERFACE Filter;
|
|
|
|
// Init the sync objects needed for device arrival thread management
|
|
ThdOutEvent = CreateEvent(NULL, FALSE, FALSE, NULL); // Manual reset, non-signaled state
|
|
|
|
|
|
ZeroMemory(&Filter, sizeof(Filter));
|
|
|
|
Filter.dbcc_size = sizeof(Filter);
|
|
Filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
|
|
CopyMemory(&Filter.dbcc_classguid,
|
|
(LPGUID)&USB_PRINTER_GUID,
|
|
sizeof(Filter.dbcc_classguid));
|
|
|
|
|
|
if ( !(ghPNPNotify_USB = RegisterDeviceNotification(ghSplHandle,
|
|
&Filter,
|
|
DEVICE_NOTIFY_SERVICE_HANDLE) )) {
|
|
|
|
DBGMSG(DBG_INFO,
|
|
("RegisterForPnPEvents: RegisterDeviceNotification failed for USB. Error %d\n",
|
|
GetLastError()));
|
|
} else {
|
|
|
|
DBGMSG(DBG_WARNING,
|
|
("RegisterForPnPEvents: RegisterDeviceNotification succesful for USB\n"));
|
|
}
|
|
|
|
CopyMemory(&Filter.dbcc_classguid,
|
|
(LPGUID)&GUID_DEVCLASS_INFRARED,
|
|
sizeof(Filter.dbcc_classguid));
|
|
|
|
|
|
if ( !(ghPNPNotify_IR = RegisterDeviceNotification(ghSplHandle,
|
|
&Filter,
|
|
DEVICE_NOTIFY_SERVICE_HANDLE) )) {
|
|
|
|
DBGMSG(DBG_INFO,
|
|
("RegisterForPnPEvents: RegisterDeviceNotification failed for IRDA. Error %d\n",
|
|
GetLastError()));
|
|
} else {
|
|
|
|
DBGMSG(DBG_WARNING,
|
|
|
|
("RegisterForPnPEvents: RegisterDeviceNotification succesful for IRDA\n"));
|
|
}
|
|
|
|
}
|
|
|
|
|
|
BOOL
|
|
SplUnregisterForDeviceEvents(
|
|
HANDLE hNotify
|
|
)
|
|
{
|
|
PDEVICE_REGISTER_INFO pDevRegnInfo, pPrev;
|
|
|
|
EnterRouterSem();
|
|
//
|
|
// Find the registration in our list, remove it and then leave CS to
|
|
// call unregister on it
|
|
//
|
|
for ( pDevRegnInfo = gpDevRegnInfo, pPrev = NULL ;
|
|
pDevRegnInfo ;
|
|
pPrev = pDevRegnInfo, pDevRegnInfo = pDevRegnInfo->pNext ) {
|
|
|
|
if ( pDevRegnInfo->hNotify == hNotify ) {
|
|
|
|
if ( pPrev )
|
|
pPrev->pNext = pDevRegnInfo->pNext;
|
|
else
|
|
gpDevRegnInfo = pDevRegnInfo->pNext;
|
|
|
|
break;
|
|
}
|
|
}
|
|
LeaveRouterSem();
|
|
|
|
if ( pDevRegnInfo ) {
|
|
|
|
UnregisterDeviceNotification(pDevRegnInfo->hNotify);
|
|
FreeSplMem(pDevRegnInfo);
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
HANDLE
|
|
SplRegisterForDeviceEvents(
|
|
HANDLE hDevice,
|
|
LPVOID pData,
|
|
PFN_QUERYREMOVE_CALLBACK pfnQueryRemove
|
|
)
|
|
{
|
|
DEV_BROADCAST_HANDLE Filter;
|
|
PDEVICE_REGISTER_INFO pDevRegnInfo;
|
|
|
|
ZeroMemory(&Filter, sizeof(Filter));
|
|
|
|
Filter.dbch_size = sizeof(Filter);
|
|
Filter.dbch_devicetype = DBT_DEVTYP_HANDLE;
|
|
Filter.dbch_handle = hDevice;
|
|
|
|
pDevRegnInfo = (PDEVICE_REGISTER_INFO)
|
|
AllocSplMem(sizeof(DEVICE_REGISTER_INFO));
|
|
|
|
if ( !pDevRegnInfo )
|
|
goto Fail;
|
|
|
|
pDevRegnInfo->hDevice = hDevice;
|
|
pDevRegnInfo->pData = pData;
|
|
pDevRegnInfo->pfnQueryRemove = pfnQueryRemove;
|
|
pDevRegnInfo->hNotify = RegisterDeviceNotification(
|
|
ghSplHandle,
|
|
&Filter,
|
|
DEVICE_NOTIFY_SERVICE_HANDLE);
|
|
|
|
if ( pDevRegnInfo->hNotify ) {
|
|
|
|
EnterRouterSem();
|
|
pDevRegnInfo->pNext = gpDevRegnInfo;
|
|
gpDevRegnInfo = pDevRegnInfo;
|
|
LeaveRouterSem();
|
|
|
|
return pDevRegnInfo->hNotify;
|
|
}
|
|
|
|
FreeSplMem(pDevRegnInfo);
|
|
|
|
Fail:
|
|
return NULL;
|
|
}
|