/**
* Process any relevant changes in the attached USB devices.
*
* Except for the first call, this is always running on the service thread.
*/
void USBProxyService::processChanges(void)
{
LogFlowThisFunc(("\n"));
/*
* Get the sorted list of USB devices.
*/
PUSBDEVICE pDevices = getDevices();
pDevices = sortDevices(pDevices);
// get a list of all running machines while we're outside the lock
// (getOpenedMachines requests higher priority locks)
SessionMachinesList llOpenedMachines;
mHost->parent()->getOpenedMachines(llOpenedMachines);
AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
/*
* Compare previous list with the new list of devices
* and merge in any changes while notifying Host.
*/
HostUSBDeviceList::iterator it = this->mDevices.begin();
while ( it != mDevices.end()
|| pDevices)
{
ComObjPtr<HostUSBDevice> pHostDevice;
if (it != mDevices.end())
pHostDevice = *it;
/*
* Assert that the object is still alive (we still reference it in
* the collection and we're the only one who calls uninit() on it.
*/
AutoCaller devCaller(pHostDevice.isNull() ? NULL : pHostDevice);
AssertComRC(devCaller.rc());
/*
* Lock the device object since we will read/write its
* properties. All Host callbacks also imply the object is locked.
*/
AutoWriteLock devLock(pHostDevice.isNull() ? NULL : pHostDevice
COMMA_LOCKVAL_SRC_POS);
/*
* Compare.
*/
int iDiff;
if (pHostDevice.isNull())
iDiff = 1;
else
{
if (!pDevices)
iDiff = -1;
else
iDiff = pHostDevice->compare(pDevices);
}
if (!iDiff)
{
/*
* The device still there, update the state and move on. The PUSBDEVICE
* structure is eaten by updateDeviceState / HostUSBDevice::updateState().
*/
PUSBDEVICE pCur = pDevices;
pDevices = pDevices->pNext;
pCur->pPrev = pCur->pNext = NULL;
bool fRunFilters = false;
SessionMachine *pIgnoreMachine = NULL;
devLock.release();
alock.release();
if (updateDeviceState(pHostDevice, pCur, &fRunFilters, &pIgnoreMachine))
deviceChanged(pHostDevice,
(fRunFilters ? &llOpenedMachines : NULL),
pIgnoreMachine);
alock.acquire();
it++;
}
else
{
if (iDiff > 0)
{
/*
* Head of pDevices was attached.
*/
PUSBDEVICE pNew = pDevices;
pDevices = pDevices->pNext;
pNew->pPrev = pNew->pNext = NULL;
ComObjPtr<HostUSBDevice> NewObj;
NewObj.createObject();
NewObj->init(pNew, this);
Log(("USBProxyService::processChanges: attached %p {%s} %s / %p:{.idVendor=%#06x, .idProduct=%#06x, .pszProduct=\"%s\", .pszManufacturer=\"%s\"}\n",
(HostUSBDevice *)NewObj,
NewObj->getName().c_str(),
NewObj->getStateName(),
pNew,
pNew->idVendor,
pNew->idProduct,
pNew->pszProduct,
pNew->pszManufacturer));
mDevices.insert(it, NewObj);
devLock.release();
alock.release();
deviceAdded(NewObj, llOpenedMachines, pNew);
alock.acquire();
}
else
{
/*
* Check if the device was actually detached or logically detached
* as the result of a re-enumeration.
*/
if (!pHostDevice->wasActuallyDetached())
it++;
else
{
it = mDevices.erase(it);
devLock.release();
alock.release();
deviceRemoved(pHostDevice);
Log(("USBProxyService::processChanges: detached %p {%s}\n",
(HostUSBDevice *)pHostDevice,
pHostDevice->getName().c_str()));
/* from now on, the object is no more valid,
* uninitialize to avoid abuse */
devCaller.release();
pHostDevice->uninit();
alock.acquire();
}
}
}
} /* while */
LogFlowThisFunc(("returns void\n"));
}
int main(int argc, char *argv[]){
/* Local vars */
char filename[MAX_FILENAME_LENGTH];
FILE* devFile = NULL;
struct SWDeviceEntry newEntry;
int devCnt = 0;
struct SWDeviceEntry devices[MASTER_MAXDEVICES];
struct SWDeviceEntry* findDev = NULL;
/* Handel Input */
(void) argc;
(void) argv;
/* Get Device Filename */
if(buildDevFileName(filename, MAX_FILENAME_LENGTH) <= 0){
fprintf(stderr, "masterTest: Could not create devFile name.\n");
exit(EXIT_FAILURE);
}
/* Open Device File */
devFile = openDevFile(filename);
if(devFile == NULL){
fprintf(stderr, "masterTest: Could not open devFile.\n");
exit(EXIT_FAILURE);
}
/* Write Test record */
newEntry.devInfo.swAddr = 0x0003u;
newEntry.ipAddr = 0x33333333u;
newEntry.devInfo.devTypes = SW_TYPE_UNIVERSAL | SW_TYPE_OUTLET;
newEntry.devInfo.numChan = 0x03u;
newEntry.devInfo.groupID = 0x01u;
newEntry.devInfo.version = SW_VERSION;
newEntry.devInfo.uid = 0x3333333333333333ull;
newEntry.lineNum = -1;
if(fseek(devFile, 0, SEEK_END) != 0){
fprintf(stderr, "masterTest: Could not seek to end of devFile.\n");
exit(EXIT_FAILURE);
}
if(writeDevice(&newEntry, devFile) < 0){
fprintf(stderr, "masterTest: Error writing new device to devFile.\n");
exit(EXIT_FAILURE);
}
/* Get Device Array */
devCnt = getDevices(devices, MASTER_MAXDEVICES, devFile);
if(devCnt < 0){
fprintf(stderr, "masterTest: "
"Error getting device list: getDevices returned %d\n",
devCnt);
exit(EXIT_FAILURE);
}
/* Sort Device Array */
if(sortDevices(devices, devCnt) < 0){
fprintf(stderr, "masterTest: Error sorting device list.\n");
exit(EXIT_FAILURE);
}
/* Find new device in array */
findDev = findDevice(newEntry.devInfo.swAddr, devices, devCnt);
if(findDev == NULL){
fprintf(stderr, "masterTest: Could not find new device.\n");
exit(EXIT_FAILURE);
}
/* Remove new device from devFile */
findDev->lineNum = -1;
devFile = updateDevices(devices, &devCnt, devFile);
if(devFile == NULL){
fprintf(stderr, "masterTest: Could not update devFile.\n");
exit(EXIT_FAILURE);
}
/* Close Device File */
if(closeDevFile(devFile) != 0){
fprintf(stderr, "masterTest: Could not close devFile.\n");
exit(EXIT_FAILURE);
}
devFile = NULL;
return 0;
}