#ifndef __THREAD_CPP #define __THREAD_CPP /*++ Copyright (C) 1996-2001 Microsoft Corporation Module Name: Thread.cpp Abstract: Enhancements to current functionality: Timeout mechanism should track across waits. AddRef/Release on task when scheduling. Enhancement Ticker logic. History: --*/ #include #include /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiThread :: ThreadContainer *WmiThread :: s_ThreadContainer = NULL ; template WmiThread :: TaskContainer *WmiThread :: s_TaskContainer = NULL ; template CriticalSection WmiThread :: s_CriticalSection(FALSE) ; template LONG WmiThread :: s_InitializeReferenceCount = 0 ; /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_Initialize ( WmiAllocator &a_Allocator ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; if ( InterlockedIncrement ( & s_InitializeReferenceCount ) == 1 ) { t_StatusCode = WmiHelper :: InitializeCriticalSection ( & s_CriticalSection ) ; if ( t_StatusCode == e_StatusCode_Success ) { if ( s_ThreadContainer == NULL ) { t_StatusCode = a_Allocator.New ( ( void ** ) & s_ThreadContainer , sizeof ( ThreadContainer ) ) ; if ( t_StatusCode == e_StatusCode_Success ) { :: new ( ( void * ) s_ThreadContainer ) WmiThread :: ThreadContainer ( a_Allocator ) ; } } else { } if ( s_TaskContainer == NULL ) { t_StatusCode = a_Allocator.New ( ( void ** ) & s_TaskContainer , sizeof ( TaskContainer ) ) ; if ( t_StatusCode == e_StatusCode_Success ) { :: new ( ( void * ) s_TaskContainer ) WmiThread :: TaskContainer ( a_Allocator ) ; } } else { } } } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_UnInitialize ( WmiAllocator &a_Allocator ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; if ( InterlockedDecrement ( & s_InitializeReferenceCount ) == 0 ) { if ( s_ThreadContainer ) { s_ThreadContainer->~WmiBasicTree () ; t_StatusCode = a_Allocator.Delete ( ( void * ) s_ThreadContainer ) ; s_ThreadContainer = NULL ; } if ( s_TaskContainer ) { s_TaskContainer->~WmiBasicTree () ; t_StatusCode = a_Allocator.Delete ( ( void * ) s_TaskContainer ) ; s_TaskContainer = NULL ; } WmiHelper :: DeleteCriticalSection ( & s_CriticalSection ); } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template ULONG WmiTask :: AddRef () { return InterlockedIncrement ( & m_ReferenceCount ) ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template ULONG WmiTask :: Release () { ULONG t_ReferenceCount = InterlockedDecrement ( & m_ReferenceCount ) ; if ( t_ReferenceCount == 0 ) { delete this ; } return t_ReferenceCount ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiTask :: WmiTask ( WmiAllocator &a_Allocator , const wchar_t *a_Name , const wchar_t *a_CompletionName ) : m_Allocator ( a_Allocator ) , m_ReferenceCount ( 0 ) , m_Event ( NULL ) , m_CompletionEvent ( NULL ) , m_Name ( NULL ) , m_CompletionName ( NULL ) , m_InitializationStatusCode ( e_StatusCode_Success ) , m_TaskState ( e_WmiTask_UnInitialized ) { if ( a_Name ) { m_InitializationStatusCode = WmiHelper :: DuplicateString ( m_Allocator , a_Name , m_Name ) ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { if ( a_CompletionName ) { m_InitializationStatusCode = WmiHelper :: DuplicateString ( m_Allocator , a_CompletionName , m_CompletionName ) ; } } if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = WmiHelper :: CreateNamedEvent ( m_Name , m_Event ) ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = WmiHelper :: CreateNamedEvent ( m_CompletionName , m_CompletionEvent ) ; } } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiTask :: WmiTask ( WmiAllocator &a_Allocator , HANDLE a_Event , HANDLE a_CompletionEvent , const wchar_t *a_Name , const wchar_t *a_CompletionName ) : m_Allocator ( a_Allocator ) , m_ReferenceCount ( 0 ) , m_Event ( NULL ) , m_CompletionEvent ( NULL ) , m_Name ( NULL ) , m_CompletionName ( NULL ) , m_InitializationStatusCode ( e_StatusCode_Success ) , m_TaskState ( e_WmiTask_UnInitialized ) { if ( a_Name ) { m_InitializationStatusCode = WmiHelper :: DuplicateString ( m_Allocator , a_Name , m_Name ) ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { if ( a_CompletionName ) { m_InitializationStatusCode = WmiHelper :: DuplicateString ( m_Allocator , a_CompletionName , m_CompletionName ) ; } } if ( m_InitializationStatusCode == e_StatusCode_Success ) { if ( a_Event ) { m_InitializationStatusCode = WmiHelper :: DuplicateHandle ( a_Event , m_Event ) ; } } if ( m_InitializationStatusCode == e_StatusCode_Success ) { if ( a_CompletionEvent ) { m_InitializationStatusCode = WmiHelper :: DuplicateHandle ( a_CompletionEvent , m_CompletionEvent ) ; } } } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiTask :: ~WmiTask () { if ( m_Name ) { m_Allocator.Delete ( ( void * ) m_Name ) ; } if ( m_CompletionName ) { m_Allocator.Delete ( ( void * ) m_CompletionName ) ; } if ( m_Event ) { CloseHandle ( m_Event ) ; } if ( m_CompletionEvent ) { CloseHandle ( m_CompletionEvent ) ; } } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiTask :: Initialize () { m_TaskState = e_WmiTask_Initialized ; return m_InitializationStatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiTask :: UnInitialize () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiTask :: Process ( WmiThread &a_Thread ) { if ( m_InitializationStatusCode == e_StatusCode_Success ) { return Complete () ; } return e_StatusCode_NotInitialized ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiTask :: Exec () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; if ( m_InitializationStatusCode == e_StatusCode_Success ) { if ( m_Event ) { BOOL t_Status = SetEvent ( m_Event ) ; if ( ! t_Status ) { t_StatusCode = e_StatusCode_Unknown ; } } } else { t_StatusCode = e_StatusCode_NotInitialized ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiTask :: Complete () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; if ( m_InitializationStatusCode == e_StatusCode_Success ) { BOOL t_Status = SetEvent ( m_CompletionEvent ) ; if ( ! t_Status ) { t_StatusCode = e_StatusCode_Unknown ; } } else { t_StatusCode = e_StatusCode_NotInitialized ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiTask :: Wait ( const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; if ( m_InitializationStatusCode == e_StatusCode_Success ) { t_StatusCode = WmiThread :: Static_Dispatch ( *this , a_Timeout ) ; } else { t_StatusCode = e_StatusCode_NotInitialized ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ // call static GetEvents on WmiThread to determine list of tasks to execute. template WmiStatusCode WmiTask :: WaitAlertable ( const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; if ( m_InitializationStatusCode == e_StatusCode_Success ) { t_StatusCode = WmiThread :: Static_AlertableDispatch ( *this , a_Timeout ) ; } else { t_StatusCode = e_StatusCode_NotInitialized ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiTask :: WaitInterruptable ( const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; if ( m_InitializationStatusCode == e_StatusCode_Success ) { t_StatusCode = WmiThread :: Static_InterruptableDispatch ( *this , a_Timeout ) ; } else { t_StatusCode = e_StatusCode_NotInitialized ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template LONG operator == ( const WmiThread :: QueueKey &a_Arg1 , const WmiThread :: QueueKey &a_Arg2 ) { LONG t_Compare ; if ( ( t_Compare = CompareElement ( a_Arg1.m_Key , a_Arg2.m_Key ) ) == 0 ) { t_Compare = CompareElement ( a_Arg1.m_Tick , a_Arg2.m_Tick ) ; } return t_Compare == 0 ? true : false ; } template bool operator < ( const WmiThread :: QueueKey &a_Arg1 , const WmiThread :: QueueKey &a_Arg2 ) { LONG t_Compare ; if ( ( t_Compare = CompareElement ( a_Arg1.m_Key , a_Arg2.m_Key ) ) == 0 ) { t_Compare = CompareElement ( a_Arg1.m_Tick , a_Arg2.m_Tick ) ; } return t_Compare < 0 ? true : false ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: PostShutdown () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; SetEvent ( m_Terminate ) ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template ULONG WmiThread :: ThreadProc ( void *a_Thread ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiThread *t_Thread = ( WmiThread * ) a_Thread ; if ( t_Thread ) { t_StatusCode = t_Thread->Initialize_Callback () ; if ( t_StatusCode == e_StatusCode_Success ) { SetEvent ( t_Thread->m_Initialized ) ; t_StatusCode = t_Thread->ThreadDispatch () ; } WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; t_StatusCode = t_Thread->UnInitialize_Callback () ; t_Thread->InternalRelease () ; WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; } return ( ULONG ) t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template ULONG WmiThread :: AddRef () { ULONG t_ReferenceCount = InterlockedIncrement ( & m_ReferenceCount ) ; if ( t_ReferenceCount == 1 ) { InternalAddRef () ; } return t_ReferenceCount ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template ULONG WmiThread :: Release () { ULONG t_ReferenceCount = InterlockedDecrement ( & m_ReferenceCount ) ; if ( t_ReferenceCount == 0 ) { CallBackRelease () ; PostShutdown () ; return InternalRelease () ; } else { return t_ReferenceCount ; } } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template ULONG WmiThread :: InternalAddRef () { return InterlockedIncrement ( & m_InternalReferenceCount ) ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template ULONG WmiThread :: InternalRelease () { ULONG t_ReferenceCount = InterlockedDecrement ( & m_InternalReferenceCount ) ; if ( t_ReferenceCount == 0 ) { WmiStatusCode t_StatusCode = s_ThreadContainer->Delete ( m_Identifier ) ; delete this ; return 0 ; } else { return t_ReferenceCount ; } } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: CreateThread () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; InternalAddRef () ; m_Thread = :: CreateThread ( NULL , m_StackSize , ( LPTHREAD_START_ROUTINE ) ThreadProc , ( void * ) this , 0 , & m_Identifier ) ; if ( m_Thread ) { ThreadContainerIterator t_Iterator ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; if ( ( t_StatusCode = s_ThreadContainer->Insert ( m_Identifier , this , t_Iterator ) ) == e_StatusCode_Success ) { } WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; } else { InternalRelease () ; t_StatusCode = e_StatusCode_OutOfResources ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiThread :: WmiThread ( WmiAllocator &a_Allocator , const wchar_t *a_Name , ULONG a_Timeout , DWORD a_StackSize ) : m_Allocator ( a_Allocator ) , m_TaskQueue ( a_Allocator ) , m_AlertableTaskQueue ( a_Allocator ) , m_InterruptableTaskQueue ( a_Allocator ) , m_Thread ( NULL ) , m_Initialized ( NULL ) , m_Terminate ( NULL ) , m_QueueChange ( NULL ) , m_Identifier ( 0 ) , m_Name ( NULL ) , m_Timeout ( a_Timeout ) , m_StackSize ( a_StackSize ) , m_ReferenceCount ( 0 ) , m_InternalReferenceCount ( 0 ) , m_InitializationStatusCode ( e_StatusCode_Success ), m_CriticalSection(NOTHROW_LOCK) { m_InitializationStatusCode = WmiHelper :: InitializeCriticalSection ( & m_CriticalSection ) ; if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = m_TaskQueue.Initialize () ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = m_InterruptableTaskQueue.Initialize () ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = m_AlertableTaskQueue.Initialize () ; } if ( a_Name ) { m_InitializationStatusCode = WmiHelper :: DuplicateString ( m_Allocator , a_Name , m_Name ) ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = WmiHelper :: CreateUnNamedEvent ( m_Terminate ) ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = WmiHelper :: CreateUnNamedEvent ( m_Initialized ) ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = WmiHelper :: CreateUnNamedEvent ( m_QueueChange ) ; } } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiThread :: ~WmiThread () { if ( m_Name ) { m_Allocator.Delete ( ( void * ) m_Name ) ; } if ( m_Initialized ) { CloseHandle ( m_Initialized ) ; } if ( m_Terminate ) { CloseHandle ( m_Terminate ) ; } if ( m_QueueChange ) { CloseHandle ( m_QueueChange ) ; } if ( m_Thread ) { CloseHandle ( m_Thread ) ; } WmiHelper :: DeleteCriticalSection ( & m_CriticalSection ) ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Initialize ( const ULONG &a_Timeout ) { if ( m_InitializationStatusCode == e_StatusCode_Success ) { m_InitializationStatusCode = CreateThread () ; } if ( m_InitializationStatusCode == e_StatusCode_Success ) { ULONG t_Status = WaitForSingleObject ( m_Initialized , a_Timeout ) ; switch ( t_Status ) { case WAIT_TIMEOUT: { m_InitializationStatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { m_InitializationStatusCode = e_StatusCode_Success ; } break ; default : { m_InitializationStatusCode = e_StatusCode_Unknown ; } break ; } } return m_InitializationStatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: UnInitialize () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; t_StatusCode = m_TaskQueue.UnInitialize () ; if ( t_StatusCode == e_StatusCode_Success ) { t_StatusCode = m_InterruptableTaskQueue.UnInitialize () ; } if ( t_StatusCode == e_StatusCode_Success ) { t_StatusCode = m_AlertableTaskQueue.UnInitialize () ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: TimedOut () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ // Queue a task to be executed immediately, a thread that calls a task procedure that // executes a Wait or MsgWait will receive an indication in Queue status will not execute // newly queued tasks. template WmiStatusCode WmiThread :: EnQueue ( const WmiKey &a_Key , WmiTask &a_Task ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; TaskContainerIterator t_Iterator ; if ( ( t_StatusCode = s_TaskContainer->Insert ( &a_Task , this , t_Iterator ) ) == e_StatusCode_Success ) { a_Task.SetTaskState ( WmiTask < WmiKey > :: e_WmiTask_EnQueued ) ; a_Task.AddRef () ; WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; QueueKey t_QueueKey ( m_Key++ , a_Key ) ; t_StatusCode = m_TaskQueue.EnQueue ( t_QueueKey , & a_Task ) ; if ( t_StatusCode == e_StatusCode_Success ) { a_Task.EnqueueAs ( WmiTask :: e_WmiTask_Enqueue ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; BOOL t_Status = SetEvent ( m_QueueChange ) ; if ( ! t_Status ) { t_StatusCode = e_StatusCode_Failed ; } } else { WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; t_StatusCode = s_TaskContainer->Delete ( &a_Task ) ; WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; a_Task.Release () ; } } else { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: EnQueueAlertable ( const WmiKey &a_Key , WmiTask &a_Task ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; TaskContainerIterator t_Iterator ; if ( ( t_StatusCode = s_TaskContainer->Insert ( &a_Task , this , t_Iterator ) ) == e_StatusCode_Success ) { a_Task.SetTaskState ( WmiTask < WmiKey > :: e_WmiTask_EnQueued ) ; a_Task.AddRef () ; WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; QueueKey t_QueueKey ( m_Key++ , a_Key ) ; t_StatusCode = m_AlertableTaskQueue.EnQueue ( t_QueueKey , & a_Task ) ; if ( t_StatusCode == e_StatusCode_Success ) { a_Task.EnqueueAs ( WmiTask :: e_WmiTask_EnqueueAlertable ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; BOOL t_Status = SetEvent ( m_QueueChange ) ; if ( ! t_Status ) { t_StatusCode = e_StatusCode_Failed ; } } else { WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection , TRUE ) ; t_StatusCode = s_TaskContainer->Delete ( &a_Task ) ; WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; a_Task.Release () ; } } else { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ // Queue a task to be executed immediately, a thread that calls a task procedure that // executes a Wait or MsgWait will receive an indication of Queue status change will execute // newly queued tasks. This is used for STA based execution where we need to interrupt the wait // to execute a dependant request. // template WmiStatusCode WmiThread :: EnQueueInterruptable ( const WmiKey &a_Key , WmiTask &a_Task ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; TaskContainerIterator t_Iterator ; if ( ( t_StatusCode = s_TaskContainer->Insert ( &a_Task , this , t_Iterator ) ) == e_StatusCode_Success ) { a_Task.SetTaskState ( WmiTask < WmiKey > :: e_WmiTask_EnQueued ) ; a_Task.AddRef () ; WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; QueueKey t_QueueKey ( m_Key++ , a_Key ) ; t_StatusCode = m_InterruptableTaskQueue.EnQueue ( t_QueueKey , & a_Task ) ; if ( t_StatusCode == e_StatusCode_Success ) { a_Task.EnqueueAs ( WmiTask :: e_WmiTask_EnqueueInterruptable ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; BOOL t_Status = SetEvent ( m_QueueChange ) ; if ( ! t_Status ) { t_StatusCode = e_StatusCode_Failed ; } } else { WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; t_StatusCode = s_TaskContainer->Delete ( &a_Task ) ; WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; a_Task.Release () ; } } else { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: DeQueue ( const WmiKey &a_Key , WmiTask &a_Task ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; a_Task.SetTaskState ( WmiTask < WmiKey > :: e_WmiTask_DeQueued ) ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: DeQueueAlertable ( const WmiKey &a_Key , WmiTask &a_Task ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; a_Task.SetTaskState ( WmiTask < WmiKey > :: e_WmiTask_DeQueued ) ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: DeQueueInterruptable ( const WmiKey &a_Key , WmiTask &a_Task ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; a_Task.SetTaskState ( WmiTask < WmiKey > :: e_WmiTask_DeQueued ) ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiThread *WmiThread :: GetThread () { WmiThread *t_Thread = NULL ; ULONG t_CurrentThreadId = GetCurrentThreadId () ; ThreadContainerIterator t_Iterator ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; WmiStatusCode t_StatusCode = s_ThreadContainer->Find ( t_CurrentThreadId , t_Iterator ) ; if ( t_StatusCode == e_StatusCode_Success ) { t_Thread = t_Iterator.GetElement () ; } WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; return t_Thread ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiThread *WmiThread :: GetServicingThread ( WmiTask &a_Task ) { WmiThread *t_Thread = NULL ; TaskContainerIterator t_Iterator ; WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; WmiStatusCode t_StatusCode = s_TaskContainer->Find ( &a_Task, t_Iterator ) ; if ( t_StatusCode == e_StatusCode_Success ) { t_Thread = t_Iterator.GetElement () ; } WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; return t_Thread ; } /* Scheduling Action Task None Dispatch nothing On Thread Wait on Completion Wait on Thread Termination Wait on Servicing Thread Termination Off Thread Wait on Completion Wait on Servicing Thread Termination Task Altertable Dispatch Alertable Queue On Thread MsgWait on Completion MsgWait on Thread Termination MsgWait on Servicing Thread Termination Off Thread MsgWait on Completion MsgWait on Servicing Thread Termination Task Interruptable Dispatch Alertable Queue Dispatch Normal Queue On Thread MsgWait on Completion MsgWait on Thread Termination MsgWait on Servicing Thread Termination MsgWait on Alertables Off Thread MsgWait on Completion MsgWait on Servicing Thread Termination Thread Alertable Dispatch Alertable Queue Dispatch Normal Queue MsgWait on Thread Termination MsgWait on Alertables */ /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_Dispatch ( WmiTask &a_Task , WmiThread &a_Thread , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; HANDLE t_Handles [ 3 ] ; t_Handles [ 0 ] = a_Task.GetCompletionEvent () ; t_Handles [ 1 ] = a_Thread.GetHandle () ; t_Handles [ 2 ] = a_Thread.GetTerminationEvent () ; ULONG t_Event = WaitForMultipleObjects ( 3 , t_Handles , FALSE , a_Timeout ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; } break ; case WAIT_OBJECT_0+1: case WAIT_OBJECT_0+2: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_Dispatch ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiThread *t_Thread = GetThread () ; if ( t_Thread ) { t_StatusCode = t_Thread->Dispatch ( a_Task , a_Timeout ) ; } else { WmiThread *t_ServicingThread = GetServicingThread ( a_Task ) ; if ( t_ServicingThread ) { t_StatusCode = Static_Dispatch ( a_Task , *t_ServicingThread , a_Timeout ) ; } else { t_StatusCode = e_StatusCode_Success ; } } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Dispatch ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; do { } while ( ( t_StatusCode = Wait ( a_Task , a_Timeout ) ) == e_StatusCode_Success ) ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Wait ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiThread *t_ServicingThread = GetServicingThread ( a_Task ) ; if ( t_ServicingThread ) { HANDLE t_Handles [ 4 ] ; t_Handles [ 0 ] = a_Task.GetCompletionEvent () ; t_Handles [ 1 ] = GetTerminationEvent () ; t_Handles [ 2 ] = t_ServicingThread->GetHandle () ; t_Handles [ 3 ] = t_ServicingThread->GetTerminationEvent () ; ULONG t_Event = WaitForMultipleObjects ( 4 , t_Handles , FALSE , a_Timeout ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; } break ; case WAIT_OBJECT_0+1: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+2: case WAIT_OBJECT_0+3: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } } else { t_StatusCode = e_StatusCode_Success ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_InterruptableDispatch ( WmiTask &a_Task , WmiThread &a_Thread , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; HANDLE t_Handles [ 3 ] ; t_Handles [ 0 ] = a_Task.GetCompletionEvent () ; t_Handles [ 1 ] = a_Thread.GetHandle () ; t_Handles [ 2 ] = a_Thread.GetTerminationEvent () ; bool t_Continuing = true ; while ( t_Continuing && t_StatusCode == e_StatusCode_Success ) { ULONG t_Event = MsgWaitForMultipleObjects ( 3 , t_Handles , FALSE , a_Timeout , QS_ALLINPUT ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = false ; } break ; case WAIT_OBJECT_0+1: case WAIT_OBJECT_0+2: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+3: { BOOL t_DispatchStatus ; MSG t_Msg ; while ( ( t_DispatchStatus = PeekMessage ( & t_Msg , NULL , 0 , 0 , PM_NOREMOVE ) ) == TRUE ) { if ( ( t_DispatchStatus = GetMessage ( & t_Msg , NULL , 0 , 0 ) ) == TRUE ) { TranslateMessage ( & t_Msg ) ; DispatchMessage ( & t_Msg ) ; } } ULONG t_Event = WaitForMultipleObjects ( 3 , t_Handles , FALSE , 0 ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = true ; } break ; case WAIT_OBJECT_0+1: case WAIT_OBJECT_0+2: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_InterruptableDispatch ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiThread *t_Thread = GetThread () ; if ( t_Thread ) { t_StatusCode = t_Thread->InterruptableDispatch ( a_Task , a_Timeout ) ; } else { WmiThread *t_ServicingThread = GetServicingThread ( a_Task ) ; if ( t_ServicingThread ) { t_StatusCode = Static_InterruptableDispatch ( a_Task , *t_ServicingThread , a_Timeout ) ; } else { t_StatusCode = e_StatusCode_Success ; } } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: InterruptableDispatch ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; QueueContainer t_EnQueue ( m_Allocator ) ; t_StatusCode = t_EnQueue.Initialize () ; if ( t_StatusCode == e_StatusCode_Success ) { do { do { t_StatusCode = Execute ( m_InterruptableTaskQueue , t_EnQueue ) ; } while ( t_StatusCode == e_StatusCode_Success ) ; if ( t_StatusCode == e_StatusCode_NotInitialized ) { WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; t_StatusCode = m_InterruptableTaskQueue.Merge ( t_EnQueue ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; if ( t_StatusCode == e_StatusCode_Success ) { t_StatusCode = InterruptableWait ( a_Task , a_Timeout ) ; } } } while ( t_StatusCode == e_StatusCode_Success || t_StatusCode == e_StatusCode_Change ) ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: InterruptableWait ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiThread *t_ServicingThread = GetServicingThread ( a_Task ) ; if ( t_ServicingThread ) { HANDLE t_Handles [ 5 ] ; t_Handles [ 0 ] = a_Task.GetCompletionEvent () ; t_Handles [ 1 ] = GetTerminationEvent () ; t_Handles [ 2 ] = t_ServicingThread->GetHandle () ; t_Handles [ 3 ] = t_ServicingThread->GetTerminationEvent () ; t_Handles [ 4 ] = t_ServicingThread->GetQueueChangeEvent () ; bool t_Continuing = true ; while ( t_Continuing && t_StatusCode == e_StatusCode_Success ) { ULONG t_Event = MsgWaitForMultipleObjects ( 5 , t_Handles , FALSE , a_Timeout , QS_ALLINPUT ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = false ; } break ; case WAIT_OBJECT_0+1: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+2: case WAIT_OBJECT_0+3: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+4: { t_StatusCode = e_StatusCode_Change ; } break ; case WAIT_OBJECT_0+5: { BOOL t_DispatchStatus ; MSG t_Msg ; while ( ( t_DispatchStatus = PeekMessage ( & t_Msg , NULL , 0 , 0 , PM_NOREMOVE ) ) == TRUE ) { if ( ( t_DispatchStatus = GetMessage ( & t_Msg , NULL , 0 , 0 ) ) == TRUE ) { TranslateMessage ( & t_Msg ) ; DispatchMessage ( & t_Msg ) ; } } ULONG t_Event = WaitForMultipleObjects ( 5 , t_Handles , FALSE , 0 ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = false ; } break ; case WAIT_OBJECT_0+1: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+2: case WAIT_OBJECT_0+3: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+4: { t_StatusCode = e_StatusCode_Change ; } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } } } else { t_StatusCode = e_StatusCode_Success ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_AlertableDispatch ( WmiTask &a_Task , WmiThread &a_Thread , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; HANDLE t_Handles [ 3 ] ; t_Handles [ 0 ] = a_Task.GetCompletionEvent () ; t_Handles [ 1 ] = a_Thread.GetHandle () ; t_Handles [ 2 ] = a_Thread.GetTerminationEvent () ; bool t_Continuing = true ; while ( t_StatusCode == e_StatusCode_Success && t_Continuing ) { ULONG t_Event = MsgWaitForMultipleObjects ( 3 , t_Handles , FALSE , a_Timeout , QS_ALLINPUT ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = false ; } break ; case WAIT_OBJECT_0+1: case WAIT_OBJECT_0+2: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+3: { BOOL t_DispatchStatus ; MSG t_Msg ; while ( ( t_DispatchStatus = PeekMessage ( & t_Msg , NULL , 0 , 0 , PM_NOREMOVE ) ) == TRUE ) { if ( ( t_DispatchStatus = GetMessage ( & t_Msg , NULL , 0 , 0 ) ) == TRUE ) { TranslateMessage ( & t_Msg ) ; DispatchMessage ( & t_Msg ) ; } } ULONG t_Event = WaitForMultipleObjects ( 3 , t_Handles , FALSE , 0 ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = false ; } break ; case WAIT_OBJECT_0+1: case WAIT_OBJECT_0+2: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } } break ; default: { t_StatusCode = e_StatusCode_Unknown ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; } } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Static_AlertableDispatch ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiThread *t_Thread = GetThread () ; if ( t_Thread ) { t_StatusCode = t_Thread->AlertableDispatch ( a_Task , a_Timeout ) ; } else { WmiThread *t_ServicingThread = GetServicingThread ( a_Task ) ; if ( t_ServicingThread ) { t_StatusCode = Static_AlertableDispatch ( a_Task , *t_ServicingThread , a_Timeout ) ; } else { t_StatusCode = e_StatusCode_Success ; } } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: AlertableDispatch ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; QueueContainer t_EnQueue ( m_Allocator ) ; t_StatusCode = t_EnQueue.Initialize () ; if ( t_StatusCode == e_StatusCode_Success ) { do { do { t_StatusCode = Execute ( m_InterruptableTaskQueue , t_EnQueue ) ; } while ( t_StatusCode == e_StatusCode_Success ) ; if ( t_StatusCode == e_StatusCode_NotInitialized ) { WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; t_StatusCode = m_InterruptableTaskQueue.Merge ( t_EnQueue ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; if ( t_StatusCode == e_StatusCode_Success ) { do { t_StatusCode = Execute ( m_TaskQueue , t_EnQueue ) ; } while ( t_StatusCode == e_StatusCode_Success ) ; } } if ( t_StatusCode == e_StatusCode_NotInitialized ) { WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; t_StatusCode = m_TaskQueue.Merge ( t_EnQueue ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; if ( t_StatusCode == e_StatusCode_Success ) { t_StatusCode = AlertableWait ( a_Task , a_Timeout ) ; } } } while ( t_StatusCode == e_StatusCode_Success || t_StatusCode == e_StatusCode_Change ) ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: Execute ( QueueContainer &a_Queue , QueueContainer &a_EnQueue ) { QueueKey t_TopKey ; WmiTask < WmiKey > *t_TopTask ; WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; WmiStatusCode t_StatusCode = a_Queue.Top ( t_TopKey , t_TopTask ) ; if ( t_StatusCode == e_StatusCode_Success ) { t_StatusCode = a_Queue.DeQueue () ; if ( t_StatusCode == e_StatusCode_Success ) { WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; if ( t_TopTask->TaskState () == WmiTask < WmiKey > :: e_WmiTask_EnQueued ) { t_StatusCode = t_TopTask->Process ( *this ) ; if ( t_StatusCode != e_StatusCode_EnQueue ) { WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; if ( ( t_StatusCode = s_TaskContainer->Delete ( t_TopTask ) ) == e_StatusCode_NotFound ) { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; t_StatusCode = e_StatusCode_Success ; } else { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; t_TopTask->Release () ; } } else { WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; switch ( t_TopTask->EnqueuedAs () ) { case WmiTask :: e_WmiTask_Enqueue: { t_StatusCode = a_EnQueue.EnQueue ( t_TopKey , t_TopTask ) ; } break ; case WmiTask :: e_WmiTask_EnqueueAlertable: { t_StatusCode = m_AlertableTaskQueue.EnQueue ( t_TopKey , t_TopTask ) ; } break ; case WmiTask :: e_WmiTask_EnqueueInterruptable: { t_StatusCode = m_InterruptableTaskQueue.EnQueue ( t_TopKey , t_TopTask ) ; } break ; default: { } break ; } WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; SetEvent ( m_QueueChange ) ; } } else { WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; if ( ( t_StatusCode = s_TaskContainer->Delete ( t_TopTask ) ) == e_StatusCode_NotFound ) { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; t_StatusCode = e_StatusCode_Success ; } else { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; } t_TopTask->Complete () ; t_TopTask->Release () ; } } else { WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; } } else { WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: ShuffleTask ( const HANDLE &a_Event ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; ULONG t_Index = m_AlertableTaskQueue.Size () ; while ( ( t_StatusCode == e_StatusCode_Success ) && ( t_Index ) ) { QueueKey t_TopKey ; WmiTask < WmiKey > *t_TopTask ; t_StatusCode = m_AlertableTaskQueue.Top ( t_TopKey , t_TopTask ) ; if ( t_StatusCode == e_StatusCode_Success ) { t_StatusCode = m_AlertableTaskQueue.DeQueue () ; if ( t_StatusCode == e_StatusCode_Success ) { if ( t_TopTask->GetEvent () == a_Event ) { if ( t_TopTask->TaskState () == WmiTask < WmiKey > :: e_WmiTask_EnQueued ) { t_StatusCode = m_TaskQueue.EnQueue ( t_TopKey , t_TopTask ) ; if ( t_StatusCode == e_StatusCode_Success ) { SetEvent ( m_QueueChange ) ; break ; } } else { WmiHelper :: EnterCriticalSection ( & s_CriticalSection ) ; if ( ( t_StatusCode = s_TaskContainer->Delete ( t_TopTask ) ) == e_StatusCode_NotFound ) { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; t_StatusCode = e_StatusCode_Success ; } else { WmiHelper :: LeaveCriticalSection ( & s_CriticalSection ) ; } t_TopTask->Complete () ; t_TopTask->Release () ; } } else { t_TopKey.SetTick ( m_Key++ ) ; t_StatusCode = m_AlertableTaskQueue.EnQueue ( t_TopKey , t_TopTask ) ; if ( t_StatusCode == e_StatusCode_Success ) { } } } } t_Index -- ; } WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: FillHandleTable ( HANDLE *a_HandleTable , ULONG &a_Capacity ) { ULONG t_Index = 0 ; WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; QueueContainerIterator t_Iterator ; t_Iterator = m_AlertableTaskQueue.End () ; while ( ( t_StatusCode == e_StatusCode_Success ) && ( t_Index < a_Capacity ) && ! t_Iterator.Null () ) { if ( t_Iterator.GetElement ()->GetEvent () ) { a_HandleTable [ t_Index ] = t_Iterator.GetElement ()->GetEvent () ; } else { t_StatusCode = e_StatusCode_InvalidArgs ; } t_Iterator.Decrement () ; t_Index ++ ; } if ( t_StatusCode == e_StatusCode_NotInitialized ) { t_StatusCode = e_StatusCode_Success ; } a_Capacity = t_Index ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: AlertableWait ( WmiTask &a_Task , const ULONG &a_Timeout ) { WmiStatusCode t_StatusCode = e_StatusCode_Success ; WmiThread *t_ServicingThread = GetServicingThread ( a_Task ) ; if ( t_ServicingThread ) { HANDLE t_Handles [ MAXIMUM_WAIT_OBJECTS - 1 ] ; t_Handles [ 0 ] = a_Task.GetCompletionEvent () ; t_Handles [ 1 ] = GetTerminationEvent () ; t_Handles [ 2 ] = t_ServicingThread->GetHandle () ; t_Handles [ 3 ] = t_ServicingThread->GetTerminationEvent () ; t_Handles [ 4 ] = t_ServicingThread->GetQueueChangeEvent () ; ULONG t_Capacity = MAXIMUM_WAIT_OBJECTS - 6 ; t_StatusCode = FillHandleTable ( & t_Handles [ 5 ] , t_Capacity ) ; bool t_Continuing = true ; while ( t_Continuing && t_StatusCode == e_StatusCode_Success ) { ULONG t_Event = MsgWaitForMultipleObjects ( 5 + t_Capacity , t_Handles , FALSE , a_Timeout , QS_ALLINPUT ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = false ; } break ; case WAIT_OBJECT_0+1: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+2: case WAIT_OBJECT_0+3: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+4: { t_StatusCode = e_StatusCode_Change ; } break ; default: { if ( t_Event == t_Capacity + 5 ) { BOOL t_DispatchStatus ; MSG t_Msg ; while ( ( t_DispatchStatus = PeekMessage ( & t_Msg , NULL , 0 , 0 , PM_NOREMOVE ) ) == TRUE ) { if ( ( t_DispatchStatus = GetMessage ( & t_Msg , NULL , 0 , 0 ) ) == TRUE ) { TranslateMessage ( & t_Msg ) ; DispatchMessage ( & t_Msg ) ; } } ULONG t_Event = WaitForMultipleObjects ( 5 + t_Capacity , t_Handles , FALSE , 0 ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = e_StatusCode_Success_Timeout ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_Success ; t_Continuing = false ; } break ; case WAIT_OBJECT_0+1: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+2: case WAIT_OBJECT_0+3: { t_StatusCode = e_StatusCode_ServicingThreadTerminated ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } break ; case WAIT_OBJECT_0+4: { t_StatusCode = e_StatusCode_Change ; } break ; default: { if ( t_Event < t_Capacity + 5 ) { t_StatusCode = ShuffleTask ( t_Handles [ t_Event ] ) ; } else { t_StatusCode = e_StatusCode_InvalidArgs ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } } } } else if ( t_Event < t_Capacity + 5 ) { t_StatusCode = ShuffleTask ( t_Handles [ t_Event ] ) ; } else { t_StatusCode = e_StatusCode_InvalidArgs ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } } break ; } } } else { t_StatusCode = e_StatusCode_Success ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: ThreadDispatch () { WmiStatusCode t_StatusCode = e_StatusCode_Success ; QueueContainer t_EnQueue ( m_Allocator ) ; t_StatusCode = t_EnQueue.Initialize () ; if ( t_StatusCode == e_StatusCode_Success ) { do { do { t_StatusCode = Execute ( m_InterruptableTaskQueue , t_EnQueue ) ; } while ( t_StatusCode == e_StatusCode_Success ) ; if ( t_StatusCode == e_StatusCode_NotInitialized ) { WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; t_StatusCode = m_InterruptableTaskQueue.Merge ( t_EnQueue ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; if ( t_StatusCode == e_StatusCode_Success ) { do { t_StatusCode = Execute ( m_TaskQueue , t_EnQueue ) ; } while ( t_StatusCode == e_StatusCode_Success ) ; } } if ( t_StatusCode == e_StatusCode_NotInitialized ) { WmiHelper :: EnterCriticalSection ( & m_CriticalSection ) ; t_StatusCode = m_TaskQueue.Merge ( t_EnQueue ) ; WmiHelper :: LeaveCriticalSection ( & m_CriticalSection ) ; if ( t_StatusCode == e_StatusCode_Success ) { t_StatusCode = ThreadWait () ; } } } while ( t_StatusCode == e_StatusCode_Success || t_StatusCode == e_StatusCode_Change ) ; } return t_StatusCode ; } /****************************************************************************** * * Name: * * * Description: * * *****************************************************************************/ template WmiStatusCode WmiThread :: ThreadWait () { int sleep_duration = 0; WmiStatusCode t_StatusCode = e_StatusCode_Success ; HANDLE t_Handles [ MAXIMUM_WAIT_OBJECTS - 1 ] ; t_Handles [ 0 ] = GetTerminationEvent () ; t_Handles [ 1 ] = GetQueueChangeEvent () ; ULONG t_Capacity = MAXIMUM_WAIT_OBJECTS - 3 ; t_StatusCode = FillHandleTable ( & t_Handles [ 2 ] , t_Capacity ) ; bool t_Continuing = true ; while ( t_Continuing && t_StatusCode == e_StatusCode_Success ) { ULONG t_Event = MsgWaitForMultipleObjectsEx ( 2 + t_Capacity , t_Handles , m_Timeout , QS_ALLINPUT , MWMO_ALERTABLE ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = TimedOut () ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG OutputDebugString ( _T("\nWmiThread - Thread Terminating") ) ; #endif } break ; case WAIT_OBJECT_0+1: { t_StatusCode = e_StatusCode_Change ; } break ; case WAIT_IO_COMPLETION: { t_StatusCode = e_StatusCode_Success; } break ; default: { if ( t_Event == t_Capacity + 2 ) { BOOL t_DispatchStatus ; MSG t_Msg ; while ( ( t_DispatchStatus = PeekMessage ( & t_Msg , NULL , 0 , 0 , PM_NOREMOVE ) ) == TRUE ) { if ( ( t_DispatchStatus = GetMessage ( & t_Msg , NULL , 0 , 0 ) ) == TRUE ) { TranslateMessage ( & t_Msg ) ; DispatchMessage ( & t_Msg ) ; } } ULONG t_Event = WaitForMultipleObjects ( 2 + t_Capacity , t_Handles , FALSE , 0 ) ; switch ( t_Event ) { case WAIT_TIMEOUT: { t_StatusCode = TimedOut () ; } break ; case WAIT_OBJECT_0: { t_StatusCode = e_StatusCode_HostingThreadTerminated ; #if DBG OutputDebugString ( _T("\nWmiThread - Thread Terminating")) ; #endif } break ; case WAIT_OBJECT_0+1: { t_StatusCode = e_StatusCode_Change ; } break ; default: { if ( t_Event < t_Capacity + 2 ) { t_StatusCode = ShuffleTask ( t_Handles [ t_Event ] ) ; } else if (t_Event == WAIT_FAILED && GetLastError() == ERROR_NOT_ENOUGH_MEMORY) { Sleep(sleep_duration?10:0); sleep_duration^=1; continue; } else { t_StatusCode = e_StatusCode_InvalidArgs ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } } } } else if ( t_Event < t_Capacity + 2 ) { t_StatusCode = ShuffleTask ( t_Handles [ t_Event ] ) ; } else if (t_Event == WAIT_FAILED && GetLastError() == ERROR_NOT_ENOUGH_MEMORY) { Sleep(sleep_duration?10:0); sleep_duration^=1; continue; } else { t_StatusCode = e_StatusCode_InvalidArgs ; #if DBG #ifdef _X86_ __asm { int 3 ; } #endif #endif } } break ; } } return t_StatusCode ; } #endif __THREAD_CPP