VirtualBox::ClientWatcher::ClientWatcher(const ComObjPtr<VirtualBox> &pVirtualBox) :
mVirtualBox(pVirtualBox),
mThread(NIL_RTTHREAD),
mUpdateReq(CWUPDATEREQARG),
mLock(LOCKCLASS_OBJECTSTATE)
{
#if defined(RT_OS_WINDOWS)
mUpdateReq = ::CreateEvent(NULL, FALSE, FALSE, NULL);
#elif defined(RT_OS_OS2)
RTSemEventCreate(&mUpdateReq);
#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER) || defined(VBOX_WITH_GENERIC_SESSION_WATCHER)
RTSemEventCreate(&mUpdateReq);
/* start with high timeouts, nothing to do */
ASMAtomicUoWriteU8(&mUpdateAdaptCtr, 0);
#else
# error "Port me!"
#endif
int vrc = RTThreadCreate(&mThread,
worker,
(void *)this,
0,
RTTHREADTYPE_MAIN_WORKER,
RTTHREADFLAGS_WAITABLE,
"Watcher");
AssertRC(vrc);
}
/**
* Sends a signal to the thread to rescan the clients/VMs having open sessions.
*/
void VirtualBox::ClientWatcher::update()
{
AssertReturnVoid(mThread != NIL_RTTHREAD);
LogFlowFunc(("ping!\n"));
/* sent an update request */
#if defined(RT_OS_WINDOWS)
ASMAtomicWriteBool(&mfUpdateReq, true);
::SetEvent(mUpdateReq);
#elif defined(RT_OS_OS2)
RTSemEventSignal(mUpdateReq);
#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER)
/* use short timeouts, as we expect changes */
ASMAtomicUoWriteU8(&mUpdateAdaptCtr, RT_ELEMENTS(s_aUpdateTimeoutSteps) - 1);
RTSemEventSignal(mUpdateReq);
#elif defined(VBOX_WITH_GENERIC_SESSION_WATCHER)
RTSemEventSignal(mUpdateReq);
#else
# error "Port me!"
#endif
}
VirtualBox::ClientWatcher::ClientWatcher(const ComObjPtr<VirtualBox> &pVirtualBox) :
mVirtualBox(pVirtualBox),
mThread(NIL_RTTHREAD),
mUpdateReq(CWUPDATEREQARG),
mLock(LOCKCLASS_OBJECTSTATE)
{
#if defined(RT_OS_WINDOWS)
/* Misc state. */
mfTerminate = false;
mcMsWait = INFINITE;
mcActiveSubworkers = 0;
/* Update request. The UpdateReq event is also used to wake up subthreads. */
mfUpdateReq = false;
mUpdateReq = ::CreateEvent(NULL /*pSecAttr*/, TRUE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pszName*/);
AssertRelease(mUpdateReq != NULL);
/* Initialize the handle array. */
for (uint32_t i = 0; i < RT_ELEMENTS(mahWaitHandles); i++)
mahWaitHandles[i] = NULL;
for (uint32_t i = 0; i < RT_ELEMENTS(mahWaitHandles); i += CW_MAX_HANDLES_PER_THREAD)
mahWaitHandles[i] = mUpdateReq;
mcWaitHandles = 1;
#elif defined(RT_OS_OS2)
RTSemEventCreate(&mUpdateReq);
#elif defined(VBOX_WITH_SYS_V_IPC_SESSION_WATCHER) || defined(VBOX_WITH_GENERIC_SESSION_WATCHER)
RTSemEventCreate(&mUpdateReq);
/* start with high timeouts, nothing to do */
ASMAtomicUoWriteU8(&mUpdateAdaptCtr, 0);
#else
# error "Port me!"
#endif
int vrc = RTThreadCreate(&mThread,
worker,
(void *)this,
0,
RTTHREADTYPE_MAIN_WORKER,
RTTHREADFLAGS_WAITABLE,
"Watcher");
AssertRC(vrc);
}
